/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 05:00:20,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 05:00:20,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 05:00:20,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 05:00:20,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 05:00:20,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 05:00:20,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 05:00:20,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 05:00:20,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 05:00:20,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 05:00:20,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 05:00:20,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 05:00:20,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 05:00:20,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 05:00:20,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 05:00:20,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 05:00:20,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 05:00:20,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 05:00:20,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 05:00:20,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 05:00:20,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 05:00:20,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 05:00:20,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 05:00:20,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 05:00:20,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 05:00:20,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 05:00:20,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 05:00:20,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 05:00:20,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 05:00:20,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 05:00:20,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 05:00:20,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 05:00:20,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 05:00:20,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 05:00:20,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 05:00:20,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 05:00:20,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 05:00:20,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 05:00:20,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 05:00:20,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 05:00:20,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 05:00:20,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf [2022-01-19 05:00:20,717 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 05:00:20,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 05:00:20,718 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 05:00:20,718 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 05:00:20,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 05:00:20,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 05:00:20,718 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 05:00:20,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 05:00:20,719 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 05:00:20,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 05:00:20,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 05:00:20,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 05:00:20,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 05:00:20,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 05:00:20,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 05:00:20,719 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 05:00:20,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 05:00:20,719 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 05:00:20,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 05:00:20,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 05:00:20,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 05:00:20,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 05:00:20,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 05:00:20,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 05:00:20,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 05:00:20,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 05:00:20,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 05:00:20,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 05:00:20,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 05:00:20,720 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 05:00:20,721 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 05:00:20,721 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 05:00:20,721 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 05:00:20,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 05:00:20,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 05:00:20,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 05:00:20,925 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 05:00:20,926 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 05:00:20,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.i [2022-01-19 05:00:21,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9378ece2/692bf127125b4977a403f0e3a7bc6710/FLAG6f0321e4d [2022-01-19 05:00:21,551 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 05:00:21,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.i [2022-01-19 05:00:21,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9378ece2/692bf127125b4977a403f0e3a7bc6710/FLAG6f0321e4d [2022-01-19 05:00:22,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9378ece2/692bf127125b4977a403f0e3a7bc6710 [2022-01-19 05:00:22,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 05:00:22,035 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 05:00:22,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 05:00:22,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 05:00:22,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 05:00:22,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 05:00:22" (1/1) ... [2022-01-19 05:00:22,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3efb3cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:22, skipping insertion in model container [2022-01-19 05:00:22,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 05:00:22" (1/1) ... [2022-01-19 05:00:22,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 05:00:22,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 05:00:22,309 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/safe024_tso.i[945,958] [2022-01-19 05:00:22,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 05:00:22,455 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 05:00:22,463 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/safe024_tso.i[945,958] [2022-01-19 05:00:22,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 05:00:22,514 INFO L208 MainTranslator]: Completed translation [2022-01-19 05:00:22,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:22 WrapperNode [2022-01-19 05:00:22,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 05:00:22,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 05:00:22,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 05:00:22,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 05:00:22,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:22" (1/1) ... [2022-01-19 05:00:22,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:22" (1/1) ... [2022-01-19 05:00:22,560 INFO L137 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2022-01-19 05:00:22,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 05:00:22,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 05:00:22,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 05:00:22,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 05:00:22,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:22" (1/1) ... [2022-01-19 05:00:22,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:22" (1/1) ... [2022-01-19 05:00:22,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:22" (1/1) ... [2022-01-19 05:00:22,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:22" (1/1) ... [2022-01-19 05:00:22,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:22" (1/1) ... [2022-01-19 05:00:22,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:22" (1/1) ... [2022-01-19 05:00:22,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:22" (1/1) ... [2022-01-19 05:00:22,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 05:00:22,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 05:00:22,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 05:00:22,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 05:00:22,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:22" (1/1) ... [2022-01-19 05:00:22,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 05:00:22,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:00:22,640 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 05:00:22,652 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 05:00:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 05:00:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 05:00:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 05:00:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 05:00:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 05:00:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-19 05:00:22,684 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-19 05:00:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-19 05:00:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-19 05:00:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-19 05:00:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-19 05:00:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 05:00:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 05:00:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 05:00:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 05:00:22,686 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 05:00:22,755 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 05:00:22,756 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 05:00:22,862 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 05:00:22,866 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 05:00:22,867 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 05:00:22,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 05:00:22 BoogieIcfgContainer [2022-01-19 05:00:22,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 05:00:22,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 05:00:22,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 05:00:22,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 05:00:22,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 05:00:22" (1/3) ... [2022-01-19 05:00:22,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62de1eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 05:00:22, skipping insertion in model container [2022-01-19 05:00:22,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:22" (2/3) ... [2022-01-19 05:00:22,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62de1eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 05:00:22, skipping insertion in model container [2022-01-19 05:00:22,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 05:00:22" (3/3) ... [2022-01-19 05:00:22,893 INFO L111 eAbstractionObserver]: Analyzing ICFG safe024_tso.i [2022-01-19 05:00:22,896 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 05:00:22,896 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 05:00:22,896 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 05:00:22,919 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,919 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,919 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,919 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,920 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,920 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,920 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,920 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,920 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,921 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,921 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,921 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,921 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,921 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,921 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,921 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,922 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,922 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,922 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,923 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,924 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,924 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,924 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,924 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,925 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,925 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,925 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,925 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,925 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,925 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,925 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,925 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,926 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,926 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,926 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,926 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,928 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,928 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,928 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,928 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,930 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,930 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,930 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,930 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,931 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,931 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,931 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,931 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:22,932 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 05:00:22,959 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 05:00:22,963 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 05:00:22,963 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 05:00:22,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 201 flow [2022-01-19 05:00:23,001 INFO L129 PetriNetUnfolder]: 2/90 cut-off events. [2022-01-19 05:00:23,001 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 05:00:23,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-01-19 05:00:23,003 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 201 flow [2022-01-19 05:00:23,006 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 76 transitions, 161 flow [2022-01-19 05:00:23,020 INFO L129 PetriNetUnfolder]: 1/75 cut-off events. [2022-01-19 05:00:23,020 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 05:00:23,020 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:23,020 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] [2022-01-19 05:00:23,021 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:23,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:23,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1963335275, now seen corresponding path program 1 times [2022-01-19 05:00:23,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:23,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165719859] [2022-01-19 05:00:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:23,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:23,349 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 05:00:23,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:23,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165719859] [2022-01-19 05:00:23,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165719859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:23,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:23,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 05:00:23,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848292306] [2022-01-19 05:00:23,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:23,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 05:00:23,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:23,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 05:00:23,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 05:00:23,392 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 93 [2022-01-19 05:00:23,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 161 flow. Second operand has 6 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 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 05:00:23,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:23,395 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 93 [2022-01-19 05:00:23,395 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:23,557 INFO L129 PetriNetUnfolder]: 3/91 cut-off events. [2022-01-19 05:00:23,558 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 05:00:23,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 91 events. 3/91 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 0 based on Foata normal form. 4/94 useless extension candidates. Maximal degree in co-relation 88. Up to 7 conditions per place. [2022-01-19 05:00:23,560 INFO L132 encePairwiseOnDemand]: 86/93 looper letters, 9 selfloop transitions, 2 changer transitions 11/85 dead transitions. [2022-01-19 05:00:23,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 85 transitions, 221 flow [2022-01-19 05:00:23,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 05:00:23,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 05:00:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 727 transitions. [2022-01-19 05:00:23,574 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8685782556750299 [2022-01-19 05:00:23,575 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 727 transitions. [2022-01-19 05:00:23,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 727 transitions. [2022-01-19 05:00:23,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:23,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 727 transitions. [2022-01-19 05:00:23,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.77777777777777) internal successors, (727), 9 states have internal predecessors, (727), 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 05:00:23,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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 05:00:23,591 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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 05:00:23,593 INFO L186 Difference]: Start difference. First operand has 85 places, 76 transitions, 161 flow. Second operand 9 states and 727 transitions. [2022-01-19 05:00:23,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 85 transitions, 221 flow [2022-01-19 05:00:23,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 85 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 05:00:23,599 INFO L242 Difference]: Finished difference. Result has 97 places, 74 transitions, 174 flow [2022-01-19 05:00:23,601 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=174, PETRI_PLACES=97, PETRI_TRANSITIONS=74} [2022-01-19 05:00:23,603 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 12 predicate places. [2022-01-19 05:00:23,604 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 74 transitions, 174 flow [2022-01-19 05:00:23,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 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 05:00:23,604 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:23,604 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] [2022-01-19 05:00:23,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 05:00:23,605 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:23,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:23,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1391130700, now seen corresponding path program 1 times [2022-01-19 05:00:23,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:23,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438013001] [2022-01-19 05:00:23,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:23,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:23,716 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 05:00:23,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:23,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438013001] [2022-01-19 05:00:23,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438013001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:23,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:23,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 05:00:23,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614700602] [2022-01-19 05:00:23,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:23,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 05:00:23,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:23,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 05:00:23,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 05:00:23,720 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2022-01-19 05:00:23,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 74 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 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 05:00:23,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:23,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2022-01-19 05:00:23,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:23,836 INFO L129 PetriNetUnfolder]: 5/102 cut-off events. [2022-01-19 05:00:23,837 INFO L130 PetriNetUnfolder]: For 23/30 co-relation queries the response was YES. [2022-01-19 05:00:23,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 102 events. 5/102 cut-off events. For 23/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 146 event pairs, 0 based on Foata normal form. 2/104 useless extension candidates. Maximal degree in co-relation 156. Up to 7 conditions per place. [2022-01-19 05:00:23,839 INFO L132 encePairwiseOnDemand]: 85/93 looper letters, 10 selfloop transitions, 4 changer transitions 12/87 dead transitions. [2022-01-19 05:00:23,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 87 transitions, 277 flow [2022-01-19 05:00:23,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 05:00:23,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 05:00:23,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 788 transitions. [2022-01-19 05:00:23,841 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8473118279569892 [2022-01-19 05:00:23,841 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 788 transitions. [2022-01-19 05:00:23,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 788 transitions. [2022-01-19 05:00:23,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:23,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 788 transitions. [2022-01-19 05:00:23,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.8) internal successors, (788), 10 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 05:00:23,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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 05:00:23,845 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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 05:00:23,846 INFO L186 Difference]: Start difference. First operand has 97 places, 74 transitions, 174 flow. Second operand 10 states and 788 transitions. [2022-01-19 05:00:23,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 87 transitions, 277 flow [2022-01-19 05:00:23,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 87 transitions, 243 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-01-19 05:00:23,849 INFO L242 Difference]: Finished difference. Result has 99 places, 74 transitions, 188 flow [2022-01-19 05:00:23,849 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=188, PETRI_PLACES=99, PETRI_TRANSITIONS=74} [2022-01-19 05:00:23,850 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 14 predicate places. [2022-01-19 05:00:23,850 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 74 transitions, 188 flow [2022-01-19 05:00:23,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 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 05:00:23,850 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:23,851 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 05:00:23,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 05:00:23,851 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:23,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:23,852 INFO L85 PathProgramCache]: Analyzing trace with hash 509569347, now seen corresponding path program 1 times [2022-01-19 05:00:23,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:23,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976442388] [2022-01-19 05:00:23,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:23,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:23,951 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 05:00:23,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:23,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976442388] [2022-01-19 05:00:23,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976442388] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:23,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:23,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 05:00:23,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798186708] [2022-01-19 05:00:23,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:23,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 05:00:23,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:23,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 05:00:23,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 05:00:23,956 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2022-01-19 05:00:23,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 74 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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 05:00:23,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:23,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2022-01-19 05:00:23,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:24,213 INFO L129 PetriNetUnfolder]: 96/342 cut-off events. [2022-01-19 05:00:24,213 INFO L130 PetriNetUnfolder]: For 48/49 co-relation queries the response was YES. [2022-01-19 05:00:24,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 626 conditions, 342 events. 96/342 cut-off events. For 48/49 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1583 event pairs, 3 based on Foata normal form. 8/346 useless extension candidates. Maximal degree in co-relation 586. Up to 81 conditions per place. [2022-01-19 05:00:24,219 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 15 selfloop transitions, 6 changer transitions 19/101 dead transitions. [2022-01-19 05:00:24,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 101 transitions, 326 flow [2022-01-19 05:00:24,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 05:00:24,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 05:00:24,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 726 transitions. [2022-01-19 05:00:24,222 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8673835125448028 [2022-01-19 05:00:24,222 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 726 transitions. [2022-01-19 05:00:24,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 726 transitions. [2022-01-19 05:00:24,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:24,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 726 transitions. [2022-01-19 05:00:24,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.66666666666667) internal successors, (726), 9 states have internal predecessors, (726), 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 05:00:24,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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 05:00:24,228 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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 05:00:24,228 INFO L186 Difference]: Start difference. First operand has 99 places, 74 transitions, 188 flow. Second operand 9 states and 726 transitions. [2022-01-19 05:00:24,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 101 transitions, 326 flow [2022-01-19 05:00:24,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 101 transitions, 300 flow, removed 8 selfloop flow, removed 10 redundant places. [2022-01-19 05:00:24,232 INFO L242 Difference]: Finished difference. Result has 97 places, 77 transitions, 218 flow [2022-01-19 05:00:24,232 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=97, PETRI_TRANSITIONS=77} [2022-01-19 05:00:24,235 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 12 predicate places. [2022-01-19 05:00:24,235 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 77 transitions, 218 flow [2022-01-19 05:00:24,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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 05:00:24,236 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:24,236 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] [2022-01-19 05:00:24,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 05:00:24,237 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:24,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:24,248 INFO L85 PathProgramCache]: Analyzing trace with hash 886086076, now seen corresponding path program 1 times [2022-01-19 05:00:24,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:24,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114590064] [2022-01-19 05:00:24,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:24,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:24,388 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 05:00:24,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:24,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114590064] [2022-01-19 05:00:24,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114590064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:24,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:24,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 05:00:24,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527247115] [2022-01-19 05:00:24,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:24,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 05:00:24,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:24,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 05:00:24,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 05:00:24,393 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2022-01-19 05:00:24,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 77 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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 05:00:24,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:24,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2022-01-19 05:00:24,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:24,510 INFO L129 PetriNetUnfolder]: 57/236 cut-off events. [2022-01-19 05:00:24,510 INFO L130 PetriNetUnfolder]: For 313/319 co-relation queries the response was YES. [2022-01-19 05:00:24,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 236 events. 57/236 cut-off events. For 313/319 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 840 event pairs, 0 based on Foata normal form. 9/243 useless extension candidates. Maximal degree in co-relation 610. Up to 80 conditions per place. [2022-01-19 05:00:24,513 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 16 selfloop transitions, 9 changer transitions 19/105 dead transitions. [2022-01-19 05:00:24,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 105 transitions, 495 flow [2022-01-19 05:00:24,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 05:00:24,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 05:00:24,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 806 transitions. [2022-01-19 05:00:24,515 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-01-19 05:00:24,515 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 806 transitions. [2022-01-19 05:00:24,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 806 transitions. [2022-01-19 05:00:24,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:24,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 806 transitions. [2022-01-19 05:00:24,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.6) internal successors, (806), 10 states have internal predecessors, (806), 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 05:00:24,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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 05:00:24,519 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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 05:00:24,519 INFO L186 Difference]: Start difference. First operand has 97 places, 77 transitions, 218 flow. Second operand 10 states and 806 transitions. [2022-01-19 05:00:24,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 105 transitions, 495 flow [2022-01-19 05:00:24,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 105 transitions, 471 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-01-19 05:00:24,525 INFO L242 Difference]: Finished difference. Result has 103 places, 80 transitions, 286 flow [2022-01-19 05:00:24,525 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=286, PETRI_PLACES=103, PETRI_TRANSITIONS=80} [2022-01-19 05:00:24,526 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 18 predicate places. [2022-01-19 05:00:24,526 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 80 transitions, 286 flow [2022-01-19 05:00:24,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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 05:00:24,526 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:24,527 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] [2022-01-19 05:00:24,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 05:00:24,527 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:24,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:24,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1056938009, now seen corresponding path program 1 times [2022-01-19 05:00:24,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:24,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886201669] [2022-01-19 05:00:24,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:24,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:24,666 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 05:00:24,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:24,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886201669] [2022-01-19 05:00:24,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886201669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:24,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:24,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 05:00:24,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819780519] [2022-01-19 05:00:24,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:24,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 05:00:24,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:24,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 05:00:24,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-19 05:00:24,669 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2022-01-19 05:00:24,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 80 transitions, 286 flow. Second operand has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 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 05:00:24,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:24,670 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2022-01-19 05:00:24,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:24,816 INFO L129 PetriNetUnfolder]: 21/153 cut-off events. [2022-01-19 05:00:24,816 INFO L130 PetriNetUnfolder]: For 411/421 co-relation queries the response was YES. [2022-01-19 05:00:24,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 153 events. 21/153 cut-off events. For 411/421 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 379 event pairs, 0 based on Foata normal form. 6/159 useless extension candidates. Maximal degree in co-relation 410. Up to 35 conditions per place. [2022-01-19 05:00:24,817 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 10 selfloop transitions, 12 changer transitions 13/96 dead transitions. [2022-01-19 05:00:24,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 96 transitions, 494 flow [2022-01-19 05:00:24,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 05:00:24,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 05:00:24,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 873 transitions. [2022-01-19 05:00:24,821 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8533724340175953 [2022-01-19 05:00:24,821 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 873 transitions. [2022-01-19 05:00:24,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 873 transitions. [2022-01-19 05:00:24,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:24,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 873 transitions. [2022-01-19 05:00:24,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 79.36363636363636) internal successors, (873), 11 states have internal predecessors, (873), 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 05:00:24,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 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 05:00:24,827 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 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 05:00:24,827 INFO L186 Difference]: Start difference. First operand has 103 places, 80 transitions, 286 flow. Second operand 11 states and 873 transitions. [2022-01-19 05:00:24,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 96 transitions, 494 flow [2022-01-19 05:00:24,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 96 transitions, 395 flow, removed 39 selfloop flow, removed 10 redundant places. [2022-01-19 05:00:24,833 INFO L242 Difference]: Finished difference. Result has 105 places, 80 transitions, 272 flow [2022-01-19 05:00:24,833 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=272, PETRI_PLACES=105, PETRI_TRANSITIONS=80} [2022-01-19 05:00:24,835 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 20 predicate places. [2022-01-19 05:00:24,836 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 80 transitions, 272 flow [2022-01-19 05:00:24,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 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 05:00:24,836 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:24,836 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 05:00:24,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 05:00:24,837 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:24,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:24,838 INFO L85 PathProgramCache]: Analyzing trace with hash 851912681, now seen corresponding path program 1 times [2022-01-19 05:00:24,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:24,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742908263] [2022-01-19 05:00:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:24,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:24,984 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 05:00:24,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:24,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742908263] [2022-01-19 05:00:24,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742908263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:24,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:24,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 05:00:24,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103072953] [2022-01-19 05:00:24,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:24,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 05:00:24,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:24,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 05:00:24,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 05:00:24,988 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2022-01-19 05:00:24,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 80 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 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 05:00:24,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:24,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2022-01-19 05:00:24,992 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:25,120 INFO L129 PetriNetUnfolder]: 13/145 cut-off events. [2022-01-19 05:00:25,121 INFO L130 PetriNetUnfolder]: For 160/170 co-relation queries the response was YES. [2022-01-19 05:00:25,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 145 events. 13/145 cut-off events. For 160/170 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 314 event pairs, 0 based on Foata normal form. 1/144 useless extension candidates. Maximal degree in co-relation 275. Up to 23 conditions per place. [2022-01-19 05:00:25,122 INFO L132 encePairwiseOnDemand]: 87/93 looper letters, 12 selfloop transitions, 1 changer transitions 7/87 dead transitions. [2022-01-19 05:00:25,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 87 transitions, 330 flow [2022-01-19 05:00:25,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 05:00:25,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 05:00:25,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 553 transitions. [2022-01-19 05:00:25,124 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8494623655913979 [2022-01-19 05:00:25,124 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 553 transitions. [2022-01-19 05:00:25,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 553 transitions. [2022-01-19 05:00:25,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:25,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 553 transitions. [2022-01-19 05:00:25,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 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 05:00:25,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:25,128 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:25,128 INFO L186 Difference]: Start difference. First operand has 105 places, 80 transitions, 272 flow. Second operand 7 states and 553 transitions. [2022-01-19 05:00:25,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 87 transitions, 330 flow [2022-01-19 05:00:25,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 87 transitions, 248 flow, removed 22 selfloop flow, removed 15 redundant places. [2022-01-19 05:00:25,131 INFO L242 Difference]: Finished difference. Result has 97 places, 80 transitions, 203 flow [2022-01-19 05:00:25,131 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=203, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2022-01-19 05:00:25,132 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 12 predicate places. [2022-01-19 05:00:25,132 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 203 flow [2022-01-19 05:00:25,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 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 05:00:25,132 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:25,133 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 05:00:25,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 05:00:25,133 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:25,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:25,133 INFO L85 PathProgramCache]: Analyzing trace with hash -140209223, now seen corresponding path program 2 times [2022-01-19 05:00:25,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:25,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587161874] [2022-01-19 05:00:25,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:25,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:25,209 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 05:00:25,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:25,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587161874] [2022-01-19 05:00:25,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587161874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:25,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:25,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 05:00:25,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049024657] [2022-01-19 05:00:25,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:25,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 05:00:25,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:25,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 05:00:25,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 05:00:25,212 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2022-01-19 05:00:25,212 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 203 flow. Second operand has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 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 05:00:25,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:25,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2022-01-19 05:00:25,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:25,278 INFO L129 PetriNetUnfolder]: 13/144 cut-off events. [2022-01-19 05:00:25,278 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 05:00:25,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 144 events. 13/144 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 373 event pairs, 2 based on Foata normal form. 1/141 useless extension candidates. Maximal degree in co-relation 222. Up to 12 conditions per place. [2022-01-19 05:00:25,279 INFO L132 encePairwiseOnDemand]: 87/93 looper letters, 0 selfloop transitions, 0 changer transitions 81/81 dead transitions. [2022-01-19 05:00:25,279 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 81 transitions, 237 flow [2022-01-19 05:00:25,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 05:00:25,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 05:00:25,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 548 transitions. [2022-01-19 05:00:25,281 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8417818740399385 [2022-01-19 05:00:25,281 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 548 transitions. [2022-01-19 05:00:25,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 548 transitions. [2022-01-19 05:00:25,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:25,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 548 transitions. [2022-01-19 05:00:25,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.28571428571429) internal successors, (548), 7 states have internal predecessors, (548), 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 05:00:25,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:25,285 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:25,285 INFO L186 Difference]: Start difference. First operand has 97 places, 80 transitions, 203 flow. Second operand 7 states and 548 transitions. [2022-01-19 05:00:25,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 81 transitions, 237 flow [2022-01-19 05:00:25,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 81 transitions, 230 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-01-19 05:00:25,286 INFO L242 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2022-01-19 05:00:25,287 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2022-01-19 05:00:25,287 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 8 predicate places. [2022-01-19 05:00:25,287 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2022-01-19 05:00:25,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 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 05:00:25,290 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 05:00:25,290 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 05:00:25,290 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 05:00:25,291 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 05:00:25,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 05:00:25,294 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-01-19 05:00:25,296 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 05:00:25,296 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 05:00:25,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 05:00:25 BasicIcfg [2022-01-19 05:00:25,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 05:00:25,300 INFO L158 Benchmark]: Toolchain (without parser) took 3264.92ms. Allocated memory was 415.2MB in the beginning and 499.1MB in the end (delta: 83.9MB). Free memory was 359.7MB in the beginning and 333.3MB in the end (delta: 26.3MB). Peak memory consumption was 112.1MB. Max. memory is 16.0GB. [2022-01-19 05:00:25,300 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 415.2MB. Free memory is still 378.4MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 05:00:25,301 INFO L158 Benchmark]: CACSL2BoogieTranslator took 473.74ms. Allocated memory is still 415.2MB. Free memory was 359.5MB in the beginning and 379.1MB in the end (delta: -19.7MB). Peak memory consumption was 17.8MB. Max. memory is 16.0GB. [2022-01-19 05:00:25,301 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.76ms. Allocated memory is still 415.2MB. Free memory was 379.1MB in the beginning and 377.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 05:00:25,301 INFO L158 Benchmark]: Boogie Preprocessor took 24.37ms. Allocated memory is still 415.2MB. Free memory was 377.3MB in the beginning and 375.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 05:00:25,301 INFO L158 Benchmark]: RCFGBuilder took 282.58ms. Allocated memory is still 415.2MB. Free memory was 375.9MB in the beginning and 363.6MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-19 05:00:25,302 INFO L158 Benchmark]: TraceAbstraction took 2420.27ms. Allocated memory was 415.2MB in the beginning and 499.1MB in the end (delta: 83.9MB). Free memory was 363.4MB in the beginning and 333.3MB in the end (delta: 30.0MB). Peak memory consumption was 115.3MB. Max. memory is 16.0GB. [2022-01-19 05:00:25,303 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 415.2MB. Free memory is still 378.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 473.74ms. Allocated memory is still 415.2MB. Free memory was 359.5MB in the beginning and 379.1MB in the end (delta: -19.7MB). Peak memory consumption was 17.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.76ms. Allocated memory is still 415.2MB. Free memory was 379.1MB in the beginning and 377.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 24.37ms. Allocated memory is still 415.2MB. Free memory was 377.3MB in the beginning and 375.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 282.58ms. Allocated memory is still 415.2MB. Free memory was 375.9MB in the beginning and 363.6MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2420.27ms. Allocated memory was 415.2MB in the beginning and 499.1MB in the end (delta: 83.9MB). Free memory was 363.4MB in the beginning and 333.3MB in the end (delta: 30.0MB). Peak memory consumption was 115.3MB. 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 7 procedures, 116 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 151 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 151 mSDsluCounter, 190 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 236 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 358 IncrementalHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 46 mSDtfsCounter, 358 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=286occurred in iteration=4, InterpolantAutomatonStates: 63, 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, 0.7s InterpolantComputationTime, 437 NumberOfCodeBlocks, 437 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 430 ConstructedInterpolants, 0 QuantifiedInterpolants, 1188 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 05:00:25,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...