/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/safe008_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 04:58:23,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 04:58:23,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 04:58:23,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 04:58:23,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 04:58:23,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 04:58:23,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 04:58:23,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 04:58:23,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 04:58:23,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 04:58:23,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 04:58:23,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 04:58:23,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 04:58:23,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 04:58:23,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 04:58:23,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 04:58:23,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 04:58:23,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 04:58:23,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 04:58:23,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 04:58:23,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 04:58:23,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 04:58:23,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 04:58:23,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 04:58:23,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-19 04:58:23,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 04:58:23,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 04:58:23,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 04:58:23,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 04:58:23,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 04:58:23,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 04:58:23,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 04:58:23,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 04:58:23,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 04:58:23,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 04:58:23,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 04:58:23,439 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 04:58:23,456 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 04:58:23,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 04:58:23,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 04:58:23,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 04:58:23,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 04:58:23,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 04:58:23,458 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 04:58:23,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 04:58:23,458 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 04:58:23,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 04:58:23,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 04:58:23,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 04:58:23,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 04:58:23,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 04:58:23,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 04:58:23,459 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 04:58:23,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 04:58:23,460 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 04:58:23,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 04:58:23,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 04:58:23,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 04:58:23,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 04:58:23,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 04:58:23,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 04:58:23,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 04:58:23,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 04:58:23,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 04:58:23,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 04:58:23,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 04:58:23,462 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 04:58:23,462 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 04:58:23,462 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 04:58:23,462 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 04:58:23,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 04:58:23,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 04:58:23,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 04:58:23,654 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 04:58:23,655 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 04:58:23,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.i [2022-01-19 04:58:23,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1329551dd/9e04e4d762f649708ec565fe41fbd1bb/FLAG9fa3c9d84 [2022-01-19 04:58:24,128 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 04:58:24,128 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.i [2022-01-19 04:58:24,143 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1329551dd/9e04e4d762f649708ec565fe41fbd1bb/FLAG9fa3c9d84 [2022-01-19 04:58:24,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1329551dd/9e04e4d762f649708ec565fe41fbd1bb [2022-01-19 04:58:24,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 04:58:24,159 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 04:58:24,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 04:58:24,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 04:58:24,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 04:58:24,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 04:58:24" (1/1) ... [2022-01-19 04:58:24,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fdf16a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:24, skipping insertion in model container [2022-01-19 04:58:24,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 04:58:24" (1/1) ... [2022-01-19 04:58:24,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 04:58:24,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 04:58:24,360 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/safe008_tso.i[945,958] [2022-01-19 04:58:24,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 04:58:24,515 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 04:58:24,525 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/safe008_tso.i[945,958] [2022-01-19 04:58:24,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 04:58:24,582 INFO L208 MainTranslator]: Completed translation [2022-01-19 04:58:24,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:24 WrapperNode [2022-01-19 04:58:24,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 04:58:24,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 04:58:24,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 04:58:24,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 04:58:24,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:24" (1/1) ... [2022-01-19 04:58:24,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:24" (1/1) ... [2022-01-19 04:58:24,633 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-01-19 04:58:24,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 04:58:24,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 04:58:24,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 04:58:24,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 04:58:24,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:24" (1/1) ... [2022-01-19 04:58:24,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:24" (1/1) ... [2022-01-19 04:58:24,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:24" (1/1) ... [2022-01-19 04:58:24,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:24" (1/1) ... [2022-01-19 04:58:24,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:24" (1/1) ... [2022-01-19 04:58:24,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:24" (1/1) ... [2022-01-19 04:58:24,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:24" (1/1) ... [2022-01-19 04:58:24,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 04:58:24,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 04:58:24,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 04:58:24,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 04:58:24,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:24" (1/1) ... [2022-01-19 04:58:24,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 04:58:24,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 04:58:24,700 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 04:58:24,715 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 04:58:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 04:58:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 04:58:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 04:58:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 04:58:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 04:58:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-19 04:58:24,737 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-19 04:58:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-19 04:58:24,737 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-19 04:58:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-19 04:58:24,738 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-19 04:58:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 04:58:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 04:58:24,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 04:58:24,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 04:58:24,740 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 04:58:24,866 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 04:58:24,867 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 04:58:24,991 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 04:58:24,997 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 04:58:24,997 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 04:58:24,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 04:58:24 BoogieIcfgContainer [2022-01-19 04:58:24,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 04:58:25,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 04:58:25,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 04:58:25,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 04:58:25,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 04:58:24" (1/3) ... [2022-01-19 04:58:25,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f06260d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 04:58:25, skipping insertion in model container [2022-01-19 04:58:25,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:24" (2/3) ... [2022-01-19 04:58:25,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f06260d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 04:58:25, skipping insertion in model container [2022-01-19 04:58:25,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 04:58:24" (3/3) ... [2022-01-19 04:58:25,008 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.i [2022-01-19 04:58:25,016 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 04:58:25,016 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 04:58:25,016 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 04:58:25,076 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,077 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,077 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,078 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,078 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,078 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,078 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,078 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,079 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,079 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,082 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,083 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,083 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,083 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,083 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,083 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,084 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,084 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,084 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,084 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,085 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,085 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,086 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,086 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,086 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,087 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,087 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,087 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,087 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,087 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,088 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,088 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,088 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,088 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,090 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,090 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,098 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,099 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,099 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,099 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,103 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,104 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,104 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,104 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,106 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,106 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,106 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,107 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:25,109 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 04:58:25,163 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 04:58:25,176 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 04:58:25,176 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 04:58:25,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-01-19 04:58:25,258 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2022-01-19 04:58:25,259 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 04:58:25,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-01-19 04:58:25,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-01-19 04:58:25,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-01-19 04:58:25,299 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2022-01-19 04:58:25,299 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 04:58:25,300 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:58:25,300 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] [2022-01-19 04:58:25,301 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 04:58:25,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:58:25,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1402349347, now seen corresponding path program 1 times [2022-01-19 04:58:25,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:58:25,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705933820] [2022-01-19 04:58:25,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:58:25,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:58:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:58:25,771 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 04:58:25,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:58:25,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705933820] [2022-01-19 04:58:25,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705933820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:58:25,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:58:25,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 04:58:25,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629619501] [2022-01-19 04:58:25,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:58:25,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 04:58:25,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:58:25,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 04:58:25,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 04:58:25,830 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2022-01-19 04:58:25,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 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 04:58:25,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:58:25,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2022-01-19 04:58:25,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:58:26,182 INFO L129 PetriNetUnfolder]: 182/601 cut-off events. [2022-01-19 04:58:26,182 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-01-19 04:58:26,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 601 events. 182/601 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3474 event pairs, 43 based on Foata normal form. 21/609 useless extension candidates. Maximal degree in co-relation 920. Up to 153 conditions per place. [2022-01-19 04:58:26,199 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 20 selfloop transitions, 5 changer transitions 28/111 dead transitions. [2022-01-19 04:58:26,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 111 transitions, 343 flow [2022-01-19 04:58:26,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 04:58:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 04:58:26,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 705 transitions. [2022-01-19 04:58:26,232 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8514492753623188 [2022-01-19 04:58:26,232 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 705 transitions. [2022-01-19 04:58:26,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 705 transitions. [2022-01-19 04:58:26,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:58:26,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 705 transitions. [2022-01-19 04:58:26,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.33333333333333) internal successors, (705), 9 states have internal predecessors, (705), 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 04:58:26,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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 04:58:26,251 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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 04:58:26,253 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 9 states and 705 transitions. [2022-01-19 04:58:26,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 111 transitions, 343 flow [2022-01-19 04:58:26,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 111 transitions, 338 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 04:58:26,260 INFO L242 Difference]: Finished difference. Result has 96 places, 77 transitions, 213 flow [2022-01-19 04:58:26,261 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=213, PETRI_PLACES=96, PETRI_TRANSITIONS=77} [2022-01-19 04:58:26,264 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2022-01-19 04:58:26,265 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 77 transitions, 213 flow [2022-01-19 04:58:26,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 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 04:58:26,265 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:58:26,266 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] [2022-01-19 04:58:26,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 04:58:26,266 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 04:58:26,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:58:26,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1036485730, now seen corresponding path program 1 times [2022-01-19 04:58:26,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:58:26,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379130392] [2022-01-19 04:58:26,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:58:26,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:58:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:58:26,440 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 04:58:26,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:58:26,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379130392] [2022-01-19 04:58:26,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379130392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:58:26,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:58:26,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:58:26,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598249684] [2022-01-19 04:58:26,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:58:26,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:58:26,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:58:26,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:58:26,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:58:26,445 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2022-01-19 04:58:26,446 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 77 transitions, 213 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 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 04:58:26,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:58:26,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2022-01-19 04:58:26,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:58:26,731 INFO L129 PetriNetUnfolder]: 120/422 cut-off events. [2022-01-19 04:58:26,732 INFO L130 PetriNetUnfolder]: For 669/809 co-relation queries the response was YES. [2022-01-19 04:58:26,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 422 events. 120/422 cut-off events. For 669/809 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2095 event pairs, 7 based on Foata normal form. 11/420 useless extension candidates. Maximal degree in co-relation 1156. Up to 120 conditions per place. [2022-01-19 04:58:26,736 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 20 selfloop transitions, 7 changer transitions 34/119 dead transitions. [2022-01-19 04:58:26,736 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 119 transitions, 626 flow [2022-01-19 04:58:26,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 04:58:26,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 04:58:26,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 997 transitions. [2022-01-19 04:58:26,740 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8336120401337793 [2022-01-19 04:58:26,740 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 997 transitions. [2022-01-19 04:58:26,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 997 transitions. [2022-01-19 04:58:26,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:58:26,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 997 transitions. [2022-01-19 04:58:26,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.6923076923077) internal successors, (997), 13 states have internal predecessors, (997), 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 04:58:26,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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 04:58:26,749 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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 04:58:26,749 INFO L186 Difference]: Start difference. First operand has 96 places, 77 transitions, 213 flow. Second operand 13 states and 997 transitions. [2022-01-19 04:58:26,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 119 transitions, 626 flow [2022-01-19 04:58:26,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 119 transitions, 586 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-01-19 04:58:26,760 INFO L242 Difference]: Finished difference. Result has 109 places, 79 transitions, 268 flow [2022-01-19 04:58:26,760 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=268, PETRI_PLACES=109, PETRI_TRANSITIONS=79} [2022-01-19 04:58:26,760 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 25 predicate places. [2022-01-19 04:58:26,761 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 79 transitions, 268 flow [2022-01-19 04:58:26,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 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 04:58:26,761 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:58:26,762 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] [2022-01-19 04:58:26,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 04:58:26,762 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 04:58:26,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:58:26,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1317688226, now seen corresponding path program 1 times [2022-01-19 04:58:26,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:58:26,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992570755] [2022-01-19 04:58:26,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:58:26,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:58:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:58:26,910 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 04:58:26,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:58:26,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992570755] [2022-01-19 04:58:26,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992570755] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:58:26,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:58:26,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:58:26,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569956747] [2022-01-19 04:58:26,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:58:26,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:58:26,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:58:26,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:58:26,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:58:26,914 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2022-01-19 04:58:26,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 79 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 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 04:58:26,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:58:26,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2022-01-19 04:58:26,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:58:27,133 INFO L129 PetriNetUnfolder]: 88/407 cut-off events. [2022-01-19 04:58:27,134 INFO L130 PetriNetUnfolder]: For 1032/1105 co-relation queries the response was YES. [2022-01-19 04:58:27,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1198 conditions, 407 events. 88/407 cut-off events. For 1032/1105 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2122 event pairs, 13 based on Foata normal form. 13/412 useless extension candidates. Maximal degree in co-relation 1144. Up to 91 conditions per place. [2022-01-19 04:58:27,138 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 23 selfloop transitions, 8 changer transitions 34/123 dead transitions. [2022-01-19 04:58:27,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 123 transitions, 754 flow [2022-01-19 04:58:27,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 04:58:27,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 04:58:27,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1001 transitions. [2022-01-19 04:58:27,142 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8369565217391305 [2022-01-19 04:58:27,142 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1001 transitions. [2022-01-19 04:58:27,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1001 transitions. [2022-01-19 04:58:27,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:58:27,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1001 transitions. [2022-01-19 04:58:27,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.0) internal successors, (1001), 13 states have internal predecessors, (1001), 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 04:58:27,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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 04:58:27,149 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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 04:58:27,149 INFO L186 Difference]: Start difference. First operand has 109 places, 79 transitions, 268 flow. Second operand 13 states and 1001 transitions. [2022-01-19 04:58:27,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 123 transitions, 754 flow [2022-01-19 04:58:27,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 123 transitions, 658 flow, removed 36 selfloop flow, removed 8 redundant places. [2022-01-19 04:58:27,158 INFO L242 Difference]: Finished difference. Result has 114 places, 81 transitions, 305 flow [2022-01-19 04:58:27,158 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=305, PETRI_PLACES=114, PETRI_TRANSITIONS=81} [2022-01-19 04:58:27,160 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 30 predicate places. [2022-01-19 04:58:27,160 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 81 transitions, 305 flow [2022-01-19 04:58:27,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 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 04:58:27,161 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:58:27,161 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] [2022-01-19 04:58:27,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 04:58:27,165 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 04:58:27,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:58:27,166 INFO L85 PathProgramCache]: Analyzing trace with hash 505243039, now seen corresponding path program 1 times [2022-01-19 04:58:27,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:58:27,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948236340] [2022-01-19 04:58:27,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:58:27,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:58:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:58:27,329 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 04:58:27,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:58:27,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948236340] [2022-01-19 04:58:27,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948236340] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:58:27,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:58:27,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:58:27,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400904053] [2022-01-19 04:58:27,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:58:27,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:58:27,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:58:27,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:58:27,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:58:27,337 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-01-19 04:58:27,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 81 transitions, 305 flow. Second operand has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 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 04:58:27,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:58:27,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-01-19 04:58:27,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:58:27,662 INFO L129 PetriNetUnfolder]: 123/491 cut-off events. [2022-01-19 04:58:27,662 INFO L130 PetriNetUnfolder]: For 1527/1681 co-relation queries the response was YES. [2022-01-19 04:58:27,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1513 conditions, 491 events. 123/491 cut-off events. For 1527/1681 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2610 event pairs, 1 based on Foata normal form. 15/495 useless extension candidates. Maximal degree in co-relation 1453. Up to 78 conditions per place. [2022-01-19 04:58:27,669 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 37 selfloop transitions, 17 changer transitions 39/149 dead transitions. [2022-01-19 04:58:27,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 149 transitions, 1012 flow [2022-01-19 04:58:27,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 04:58:27,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 04:58:27,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1273 transitions. [2022-01-19 04:58:27,673 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8139386189258312 [2022-01-19 04:58:27,673 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1273 transitions. [2022-01-19 04:58:27,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1273 transitions. [2022-01-19 04:58:27,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:58:27,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1273 transitions. [2022-01-19 04:58:27,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 74.88235294117646) internal successors, (1273), 17 states have internal predecessors, (1273), 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 04:58:27,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 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 04:58:27,683 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 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 04:58:27,683 INFO L186 Difference]: Start difference. First operand has 114 places, 81 transitions, 305 flow. Second operand 17 states and 1273 transitions. [2022-01-19 04:58:27,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 149 transitions, 1012 flow [2022-01-19 04:58:27,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 149 transitions, 840 flow, removed 72 selfloop flow, removed 13 redundant places. [2022-01-19 04:58:27,694 INFO L242 Difference]: Finished difference. Result has 124 places, 91 transitions, 465 flow [2022-01-19 04:58:27,694 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=465, PETRI_PLACES=124, PETRI_TRANSITIONS=91} [2022-01-19 04:58:27,695 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 40 predicate places. [2022-01-19 04:58:27,695 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 91 transitions, 465 flow [2022-01-19 04:58:27,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 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 04:58:27,696 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:58:27,696 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] [2022-01-19 04:58:27,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 04:58:27,697 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 04:58:27,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:58:27,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1542610401, now seen corresponding path program 2 times [2022-01-19 04:58:27,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:58:27,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279906358] [2022-01-19 04:58:27,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:58:27,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:58:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:58:27,810 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 04:58:27,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:58:27,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279906358] [2022-01-19 04:58:27,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279906358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:58:27,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:58:27,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:58:27,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700682579] [2022-01-19 04:58:27,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:58:27,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:58:27,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:58:27,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:58:27,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:58:27,814 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2022-01-19 04:58:27,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 91 transitions, 465 flow. Second operand has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 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 04:58:27,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:58:27,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2022-01-19 04:58:27,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:58:27,993 INFO L129 PetriNetUnfolder]: 60/342 cut-off events. [2022-01-19 04:58:27,994 INFO L130 PetriNetUnfolder]: For 1579/1767 co-relation queries the response was YES. [2022-01-19 04:58:27,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 342 events. 60/342 cut-off events. For 1579/1767 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1629 event pairs, 2 based on Foata normal form. 12/344 useless extension candidates. Maximal degree in co-relation 1120. Up to 55 conditions per place. [2022-01-19 04:58:27,998 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 30 selfloop transitions, 12 changer transitions 26/127 dead transitions. [2022-01-19 04:58:27,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 127 transitions, 994 flow [2022-01-19 04:58:27,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 04:58:27,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 04:58:28,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 983 transitions. [2022-01-19 04:58:28,001 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8219063545150501 [2022-01-19 04:58:28,001 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 983 transitions. [2022-01-19 04:58:28,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 983 transitions. [2022-01-19 04:58:28,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:58:28,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 983 transitions. [2022-01-19 04:58:28,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.61538461538461) internal successors, (983), 13 states have internal predecessors, (983), 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 04:58:28,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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 04:58:28,006 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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 04:58:28,006 INFO L186 Difference]: Start difference. First operand has 124 places, 91 transitions, 465 flow. Second operand 13 states and 983 transitions. [2022-01-19 04:58:28,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 127 transitions, 994 flow [2022-01-19 04:58:28,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 127 transitions, 874 flow, removed 60 selfloop flow, removed 12 redundant places. [2022-01-19 04:58:28,014 INFO L242 Difference]: Finished difference. Result has 124 places, 94 transitions, 551 flow [2022-01-19 04:58:28,014 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=551, PETRI_PLACES=124, PETRI_TRANSITIONS=94} [2022-01-19 04:58:28,015 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 40 predicate places. [2022-01-19 04:58:28,015 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 94 transitions, 551 flow [2022-01-19 04:58:28,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 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 04:58:28,015 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:58:28,015 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] [2022-01-19 04:58:28,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 04:58:28,016 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 04:58:28,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:58:28,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2118404949, now seen corresponding path program 1 times [2022-01-19 04:58:28,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:58:28,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726471496] [2022-01-19 04:58:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:58:28,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:58:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:58:28,136 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 04:58:28,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:58:28,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726471496] [2022-01-19 04:58:28,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726471496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:58:28,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:58:28,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:58:28,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388802510] [2022-01-19 04:58:28,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:58:28,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:58:28,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:58:28,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:58:28,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:58:28,139 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2022-01-19 04:58:28,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 94 transitions, 551 flow. Second operand has 7 states, 7 states have (on average 74.14285714285714) internal successors, (519), 7 states have internal predecessors, (519), 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 04:58:28,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:58:28,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2022-01-19 04:58:28,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:58:28,266 INFO L129 PetriNetUnfolder]: 32/245 cut-off events. [2022-01-19 04:58:28,266 INFO L130 PetriNetUnfolder]: For 1087/1618 co-relation queries the response was YES. [2022-01-19 04:58:28,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 245 events. 32/245 cut-off events. For 1087/1618 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1015 event pairs, 0 based on Foata normal form. 6/245 useless extension candidates. Maximal degree in co-relation 807. Up to 49 conditions per place. [2022-01-19 04:58:28,269 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 25 selfloop transitions, 14 changer transitions 12/110 dead transitions. [2022-01-19 04:58:28,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 110 transitions, 787 flow [2022-01-19 04:58:28,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 04:58:28,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 04:58:28,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 759 transitions. [2022-01-19 04:58:28,272 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.825 [2022-01-19 04:58:28,272 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 759 transitions. [2022-01-19 04:58:28,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 759 transitions. [2022-01-19 04:58:28,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:58:28,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 759 transitions. [2022-01-19 04:58:28,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.9) internal successors, (759), 10 states have internal predecessors, (759), 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 04:58:28,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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 04:58:28,276 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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 04:58:28,276 INFO L186 Difference]: Start difference. First operand has 124 places, 94 transitions, 551 flow. Second operand 10 states and 759 transitions. [2022-01-19 04:58:28,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 110 transitions, 787 flow [2022-01-19 04:58:28,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 110 transitions, 720 flow, removed 31 selfloop flow, removed 7 redundant places. [2022-01-19 04:58:28,284 INFO L242 Difference]: Finished difference. Result has 124 places, 92 transitions, 548 flow [2022-01-19 04:58:28,284 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=548, PETRI_PLACES=124, PETRI_TRANSITIONS=92} [2022-01-19 04:58:28,285 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 40 predicate places. [2022-01-19 04:58:28,285 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 92 transitions, 548 flow [2022-01-19 04:58:28,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.14285714285714) internal successors, (519), 7 states have internal predecessors, (519), 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 04:58:28,285 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:58:28,285 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 04:58:28,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 04:58:28,286 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 04:58:28,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:58:28,286 INFO L85 PathProgramCache]: Analyzing trace with hash 13397974, now seen corresponding path program 1 times [2022-01-19 04:58:28,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:58:28,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360030137] [2022-01-19 04:58:28,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:58:28,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:58:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:58:28,363 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 04:58:28,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:58:28,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360030137] [2022-01-19 04:58:28,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360030137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:58:28,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:58:28,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:58:28,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513408441] [2022-01-19 04:58:28,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:58:28,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:58:28,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:58:28,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:58:28,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:58:28,366 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 04:58:28,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 92 transitions, 548 flow. Second operand has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 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 04:58:28,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:58:28,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 04:58:28,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:58:28,512 INFO L129 PetriNetUnfolder]: 39/332 cut-off events. [2022-01-19 04:58:28,512 INFO L130 PetriNetUnfolder]: For 1437/1977 co-relation queries the response was YES. [2022-01-19 04:58:28,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1024 conditions, 332 events. 39/332 cut-off events. For 1437/1977 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1763 event pairs, 2 based on Foata normal form. 10/333 useless extension candidates. Maximal degree in co-relation 996. Up to 48 conditions per place. [2022-01-19 04:58:28,515 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 12 selfloop transitions, 5 changer transitions 23/108 dead transitions. [2022-01-19 04:58:28,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 108 transitions, 730 flow [2022-01-19 04:58:28,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 04:58:28,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 04:58:28,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 780 transitions. [2022-01-19 04:58:28,518 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8478260869565217 [2022-01-19 04:58:28,518 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 780 transitions. [2022-01-19 04:58:28,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 780 transitions. [2022-01-19 04:58:28,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:58:28,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 780 transitions. [2022-01-19 04:58:28,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 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 04:58:28,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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 04:58:28,522 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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 04:58:28,522 INFO L186 Difference]: Start difference. First operand has 124 places, 92 transitions, 548 flow. Second operand 10 states and 780 transitions. [2022-01-19 04:58:28,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 108 transitions, 730 flow [2022-01-19 04:58:28,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 108 transitions, 658 flow, removed 22 selfloop flow, removed 8 redundant places. [2022-01-19 04:58:28,529 INFO L242 Difference]: Finished difference. Result has 127 places, 82 transitions, 378 flow [2022-01-19 04:58:28,529 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=378, PETRI_PLACES=127, PETRI_TRANSITIONS=82} [2022-01-19 04:58:28,530 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 43 predicate places. [2022-01-19 04:58:28,530 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 82 transitions, 378 flow [2022-01-19 04:58:28,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 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 04:58:28,530 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:58:28,531 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 04:58:28,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 04:58:28,531 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:58:28,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:58:28,531 INFO L85 PathProgramCache]: Analyzing trace with hash -13958422, now seen corresponding path program 1 times [2022-01-19 04:58:28,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:58:28,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590925576] [2022-01-19 04:58:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:58:28,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:58:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:58:28,603 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 04:58:28,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:58:28,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590925576] [2022-01-19 04:58:28,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590925576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:58:28,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:58:28,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:58:28,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160147512] [2022-01-19 04:58:28,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:58:28,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:58:28,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:58:28,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:58:28,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:58:28,606 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 04:58:28,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 82 transitions, 378 flow. Second operand has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 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 04:58:28,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:58:28,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 04:58:28,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:58:28,725 INFO L129 PetriNetUnfolder]: 14/180 cut-off events. [2022-01-19 04:58:28,725 INFO L130 PetriNetUnfolder]: For 827/1038 co-relation queries the response was YES. [2022-01-19 04:58:28,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 180 events. 14/180 cut-off events. For 827/1038 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 623 event pairs, 0 based on Foata normal form. 9/184 useless extension candidates. Maximal degree in co-relation 484. Up to 19 conditions per place. [2022-01-19 04:58:28,726 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 10 selfloop transitions, 4 changer transitions 22/97 dead transitions. [2022-01-19 04:58:28,726 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 97 transitions, 548 flow [2022-01-19 04:58:28,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 04:58:28,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 04:58:28,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 778 transitions. [2022-01-19 04:58:28,729 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8456521739130435 [2022-01-19 04:58:28,729 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 778 transitions. [2022-01-19 04:58:28,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 778 transitions. [2022-01-19 04:58:28,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:58:28,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 778 transitions. [2022-01-19 04:58:28,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.8) internal successors, (778), 10 states have internal predecessors, (778), 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 04:58:28,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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 04:58:28,733 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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 04:58:28,733 INFO L186 Difference]: Start difference. First operand has 127 places, 82 transitions, 378 flow. Second operand 10 states and 778 transitions. [2022-01-19 04:58:28,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 97 transitions, 548 flow [2022-01-19 04:58:28,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 97 transitions, 400 flow, removed 45 selfloop flow, removed 22 redundant places. [2022-01-19 04:58:28,737 INFO L242 Difference]: Finished difference. Result has 116 places, 74 transitions, 236 flow [2022-01-19 04:58:28,737 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=236, PETRI_PLACES=116, PETRI_TRANSITIONS=74} [2022-01-19 04:58:28,738 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 32 predicate places. [2022-01-19 04:58:28,738 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 74 transitions, 236 flow [2022-01-19 04:58:28,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 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 04:58:28,738 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:58:28,739 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:58:28,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 04:58:28,739 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:58:28,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:58:28,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1292346336, now seen corresponding path program 1 times [2022-01-19 04:58:28,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:58:28,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513081941] [2022-01-19 04:58:28,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:58:28,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:58:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:58:28,802 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 04:58:28,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:58:28,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513081941] [2022-01-19 04:58:28,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513081941] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:58:28,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:58:28,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 04:58:28,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410208815] [2022-01-19 04:58:28,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:58:28,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 04:58:28,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:58:28,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 04:58:28,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 04:58:28,805 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 04:58:28,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 74 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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 04:58:28,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:58:28,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 04:58:28,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:58:28,920 INFO L129 PetriNetUnfolder]: 119/364 cut-off events. [2022-01-19 04:58:28,920 INFO L130 PetriNetUnfolder]: For 137/148 co-relation queries the response was YES. [2022-01-19 04:58:28,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 364 events. 119/364 cut-off events. For 137/148 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1812 event pairs, 3 based on Foata normal form. 0/350 useless extension candidates. Maximal degree in co-relation 685. Up to 86 conditions per place. [2022-01-19 04:58:28,923 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 14 selfloop transitions, 5 changer transitions 27/106 dead transitions. [2022-01-19 04:58:28,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 106 transitions, 396 flow [2022-01-19 04:58:28,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 04:58:28,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 04:58:28,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2022-01-19 04:58:28,926 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8673913043478261 [2022-01-19 04:58:28,926 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 798 transitions. [2022-01-19 04:58:28,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 798 transitions. [2022-01-19 04:58:28,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:58:28,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 798 transitions. [2022-01-19 04:58:28,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.8) internal successors, (798), 10 states have internal predecessors, (798), 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 04:58:28,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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 04:58:28,931 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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 04:58:28,931 INFO L186 Difference]: Start difference. First operand has 116 places, 74 transitions, 236 flow. Second operand 10 states and 798 transitions. [2022-01-19 04:58:28,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 106 transitions, 396 flow [2022-01-19 04:58:28,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 106 transitions, 341 flow, removed 12 selfloop flow, removed 19 redundant places. [2022-01-19 04:58:28,935 INFO L242 Difference]: Finished difference. Result has 106 places, 75 transitions, 229 flow [2022-01-19 04:58:28,935 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=229, PETRI_PLACES=106, PETRI_TRANSITIONS=75} [2022-01-19 04:58:28,936 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 22 predicate places. [2022-01-19 04:58:28,936 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 75 transitions, 229 flow [2022-01-19 04:58:28,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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 04:58:28,936 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:58:28,936 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 04:58:28,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 04:58:28,937 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:58:28,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:58:28,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1760643895, now seen corresponding path program 1 times [2022-01-19 04:58:28,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:58:28,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588201609] [2022-01-19 04:58:28,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:58:28,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:58:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:58:29,030 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 04:58:29,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:58:29,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588201609] [2022-01-19 04:58:29,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588201609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:58:29,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:58:29,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:58:29,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182713921] [2022-01-19 04:58:29,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:58:29,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:58:29,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:58:29,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:58:29,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:58:29,033 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 04:58:29,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 75 transitions, 229 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 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 04:58:29,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:58:29,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 04:58:29,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:58:29,140 INFO L129 PetriNetUnfolder]: 47/208 cut-off events. [2022-01-19 04:58:29,140 INFO L130 PetriNetUnfolder]: For 273/308 co-relation queries the response was YES. [2022-01-19 04:58:29,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 208 events. 47/208 cut-off events. For 273/308 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 751 event pairs, 0 based on Foata normal form. 9/215 useless extension candidates. Maximal degree in co-relation 576. Up to 69 conditions per place. [2022-01-19 04:58:29,141 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 11 selfloop transitions, 7 changer transitions 25/103 dead transitions. [2022-01-19 04:58:29,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 504 flow [2022-01-19 04:58:29,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 04:58:29,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 04:58:29,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 795 transitions. [2022-01-19 04:58:29,143 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8641304347826086 [2022-01-19 04:58:29,144 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 795 transitions. [2022-01-19 04:58:29,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 795 transitions. [2022-01-19 04:58:29,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:58:29,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 795 transitions. [2022-01-19 04:58:29,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.5) internal successors, (795), 10 states have internal predecessors, (795), 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 04:58:29,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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 04:58:29,147 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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 04:58:29,147 INFO L186 Difference]: Start difference. First operand has 106 places, 75 transitions, 229 flow. Second operand 10 states and 795 transitions. [2022-01-19 04:58:29,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 504 flow [2022-01-19 04:58:29,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 103 transitions, 477 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-01-19 04:58:29,150 INFO L242 Difference]: Finished difference. Result has 109 places, 75 transitions, 251 flow [2022-01-19 04:58:29,151 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=251, PETRI_PLACES=109, PETRI_TRANSITIONS=75} [2022-01-19 04:58:29,151 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 25 predicate places. [2022-01-19 04:58:29,151 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 75 transitions, 251 flow [2022-01-19 04:58:29,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 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 04:58:29,152 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:58:29,152 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:58:29,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 04:58:29,152 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:58:29,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:58:29,153 INFO L85 PathProgramCache]: Analyzing trace with hash -195013454, now seen corresponding path program 1 times [2022-01-19 04:58:29,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:58:29,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30357756] [2022-01-19 04:58:29,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:58:29,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:58:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:58:29,225 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 04:58:29,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:58:29,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30357756] [2022-01-19 04:58:29,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30357756] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:58:29,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:58:29,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 04:58:29,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741503528] [2022-01-19 04:58:29,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:58:29,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 04:58:29,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:58:29,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 04:58:29,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-19 04:58:29,227 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 04:58:29,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 75 transitions, 251 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 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 04:58:29,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:58:29,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 04:58:29,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:58:29,325 INFO L129 PetriNetUnfolder]: 9/111 cut-off events. [2022-01-19 04:58:29,325 INFO L130 PetriNetUnfolder]: For 215/224 co-relation queries the response was YES. [2022-01-19 04:58:29,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 111 events. 9/111 cut-off events. For 215/224 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 239 event pairs, 0 based on Foata normal form. 5/116 useless extension candidates. Maximal degree in co-relation 269. Up to 18 conditions per place. [2022-01-19 04:58:29,326 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 0 selfloop transitions, 0 changer transitions 80/80 dead transitions. [2022-01-19 04:58:29,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 80 transitions, 369 flow [2022-01-19 04:58:29,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 04:58:29,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 04:58:29,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 854 transitions. [2022-01-19 04:58:29,327 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8438735177865613 [2022-01-19 04:58:29,327 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 854 transitions. [2022-01-19 04:58:29,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 854 transitions. [2022-01-19 04:58:29,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:58:29,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 854 transitions. [2022-01-19 04:58:29,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 77.63636363636364) internal successors, (854), 11 states have internal predecessors, (854), 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 04:58:29,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 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 04:58:29,331 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 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 04:58:29,331 INFO L186 Difference]: Start difference. First operand has 109 places, 75 transitions, 251 flow. Second operand 11 states and 854 transitions. [2022-01-19 04:58:29,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 80 transitions, 369 flow [2022-01-19 04:58:29,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 80 transitions, 305 flow, removed 23 selfloop flow, removed 10 redundant places. [2022-01-19 04:58:29,333 INFO L242 Difference]: Finished difference. Result has 98 places, 0 transitions, 0 flow [2022-01-19 04:58:29,333 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=98, PETRI_TRANSITIONS=0} [2022-01-19 04:58:29,334 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 14 predicate places. [2022-01-19 04:58:29,334 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 0 transitions, 0 flow [2022-01-19 04:58:29,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 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 04:58:29,336 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 04:58:29,337 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 04:58:29,337 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 04:58:29,337 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 04:58:29,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 04:58:29,340 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:58:29,342 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 04:58:29,342 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 04:58:29,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 04:58:29 BasicIcfg [2022-01-19 04:58:29,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 04:58:29,345 INFO L158 Benchmark]: Toolchain (without parser) took 5186.23ms. Allocated memory was 411.0MB in the beginning and 541.1MB in the end (delta: 130.0MB). Free memory was 355.8MB in the beginning and 295.9MB in the end (delta: 59.9MB). Peak memory consumption was 191.5MB. Max. memory is 16.0GB. [2022-01-19 04:58:29,345 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 411.0MB. Free memory is still 373.8MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 04:58:29,346 INFO L158 Benchmark]: CACSL2BoogieTranslator took 421.50ms. Allocated memory was 411.0MB in the beginning and 541.1MB in the end (delta: 130.0MB). Free memory was 355.7MB in the beginning and 505.4MB in the end (delta: -149.7MB). Peak memory consumption was 6.9MB. Max. memory is 16.0GB. [2022-01-19 04:58:29,346 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.48ms. Allocated memory is still 541.1MB. Free memory was 505.4MB in the beginning and 503.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 04:58:29,346 INFO L158 Benchmark]: Boogie Preprocessor took 24.76ms. Allocated memory is still 541.1MB. Free memory was 503.3MB in the beginning and 502.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 04:58:29,346 INFO L158 Benchmark]: RCFGBuilder took 339.43ms. Allocated memory is still 541.1MB. Free memory was 502.2MB in the beginning and 486.5MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-19 04:58:29,347 INFO L158 Benchmark]: TraceAbstraction took 4344.59ms. Allocated memory is still 541.1MB. Free memory was 485.5MB in the beginning and 295.9MB in the end (delta: 189.6MB). Peak memory consumption was 191.7MB. Max. memory is 16.0GB. [2022-01-19 04:58:29,348 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 411.0MB. Free memory is still 373.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 421.50ms. Allocated memory was 411.0MB in the beginning and 541.1MB in the end (delta: 130.0MB). Free memory was 355.7MB in the beginning and 505.4MB in the end (delta: -149.7MB). Peak memory consumption was 6.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.48ms. Allocated memory is still 541.1MB. Free memory was 505.4MB in the beginning and 503.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.76ms. Allocated memory is still 541.1MB. Free memory was 503.3MB in the beginning and 502.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 339.43ms. Allocated memory is still 541.1MB. Free memory was 502.2MB in the beginning and 486.5MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4344.59ms. Allocated memory is still 541.1MB. Free memory was 485.5MB in the beginning and 295.9MB in the end (delta: 189.6MB). Peak memory consumption was 191.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 115 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: 4.2s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 410 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 410 mSDsluCounter, 635 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 627 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 619 IncrementalHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 156 mSDtfsCounter, 619 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=551occurred in iteration=5, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 662 NumberOfCodeBlocks, 662 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 651 ConstructedInterpolants, 0 QuantifiedInterpolants, 2795 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 04:58:29,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...