/usr/bin/java -Xmx8000000000 -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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:34:46,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:34:46,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:34:46,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 07:34:46,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 07:34:46,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 07:34:46,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 07:34:46,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 07:34:46,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 07:34:46,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 07:34:46,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 07:34:46,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 07:34:46,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:34:46,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:34:46,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:34:46,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:34:46,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:34:46,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:34:46,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:34:46,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:34:46,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:34:46,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:34:46,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:34:46,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:34:46,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 07:34:46,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 07:34:46,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 07:34:46,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 07:34:46,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 07:34:46,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 07:34:46,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 07:34:46,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 07:34:46,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 07:34:46,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:34:46,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:34:46,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:34:46,931 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.epf [2021-06-13 07:34:46,966 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:34:46,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:34:46,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:34:46,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:34:46,969 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:34:46,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:34:46,969 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:34:46,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:34:46,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:34:46,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:34:46,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:34:46,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:34:46,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:34:46,971 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:34:46,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:34:46,971 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:34:46,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:34:46,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:34:46,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:34:46,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:34:46,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:34:46,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:34:46,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:34:46,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:34:46,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:34:46,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:34:46,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:34:46,973 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:34:46,974 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:34:46,974 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:34:47,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:34:47,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:34:47,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:34:47,276 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:34:47,277 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:34:47,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_pso.oepc.i [2021-06-13 07:34:47,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87ebaa850/4d8fd7b47db640029d61fa7292245be4/FLAGf6aabfaf4 [2021-06-13 07:34:47,868 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:34:47,869 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_pso.oepc.i [2021-06-13 07:34:47,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87ebaa850/4d8fd7b47db640029d61fa7292245be4/FLAGf6aabfaf4 [2021-06-13 07:34:48,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87ebaa850/4d8fd7b47db640029d61fa7292245be4 [2021-06-13 07:34:48,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:34:48,314 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:34:48,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:34:48,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:34:48,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:34:48,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:34:48" (1/1) ... [2021-06-13 07:34:48,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0f962a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:34:48, skipping insertion in model container [2021-06-13 07:34:48,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:34:48" (1/1) ... [2021-06-13 07:34:48,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:34:48,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:34:48,517 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_pso.oepc.i[950,963] [2021-06-13 07:34:48,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:34:48,670 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:34:48,680 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_pso.oepc.i[950,963] [2021-06-13 07:34:48,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:34:48,806 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:34:48,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:34:48 WrapperNode [2021-06-13 07:34:48,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:34:48,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:34:48,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:34:48,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:34:48,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:34:48" (1/1) ... [2021-06-13 07:34:48,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:34:48" (1/1) ... [2021-06-13 07:34:48,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:34:48,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:34:48,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:34:48,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:34:48,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:34:48" (1/1) ... [2021-06-13 07:34:48,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:34:48" (1/1) ... [2021-06-13 07:34:48,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:34:48" (1/1) ... [2021-06-13 07:34:48,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:34:48" (1/1) ... [2021-06-13 07:34:48,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:34:48" (1/1) ... [2021-06-13 07:34:48,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:34:48" (1/1) ... [2021-06-13 07:34:48,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:34:48" (1/1) ... [2021-06-13 07:34:48,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:34:48,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:34:48,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:34:48,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:34:48,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:34:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:34:48,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:34:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:34:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:34:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:34:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:34:48,968 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:34:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:34:48,968 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:34:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:34:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:34:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:34:48,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:34:48,970 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 07:34:50,633 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:34:50,634 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-06-13 07:34:50,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:34:50 BoogieIcfgContainer [2021-06-13 07:34:50,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:34:50,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:34:50,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:34:50,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:34:50,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:34:48" (1/3) ... [2021-06-13 07:34:50,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbc48eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:34:50, skipping insertion in model container [2021-06-13 07:34:50,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:34:48" (2/3) ... [2021-06-13 07:34:50,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbc48eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:34:50, skipping insertion in model container [2021-06-13 07:34:50,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:34:50" (3/3) ... [2021-06-13 07:34:50,644 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_pso.oepc.i [2021-06-13 07:34:50,650 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:34:50,651 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-06-13 07:34:50,651 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:34:50,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,676 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,676 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,676 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,676 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,677 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,677 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,677 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,677 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,677 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,677 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,677 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,680 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,680 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,680 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,680 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,681 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,681 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,684 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,685 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,686 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,686 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,686 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,686 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,686 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,686 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,686 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,686 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,687 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,688 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,688 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,688 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,689 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,689 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,689 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,689 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,689 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,689 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,689 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,689 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,690 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:34:50,691 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:34:50,710 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 07:34:50,727 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:34:50,727 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:34:50,727 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:34:50,727 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:34:50,727 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:34:50,727 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:34:50,727 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:34:50,728 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == P0======== [2021-06-13 07:34:50,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 85 transitions, 180 flow [2021-06-13 07:34:50,761 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-06-13 07:34:50,761 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:34:50,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2021-06-13 07:34:50,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 85 transitions, 180 flow [2021-06-13 07:34:50,766 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-13 07:34:50,766 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-13 07:34:50,767 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:34:50,767 INFO L301 ceAbstractionStarter]: Result for error location P0 was SAFE (1/3) [2021-06-13 07:34:50,769 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-13 07:34:50,771 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:34:50,771 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:34:50,772 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:34:50,772 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:34:50,772 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:34:50,772 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:34:50,772 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:34:50,772 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:34:50,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 85 transitions, 180 flow [2021-06-13 07:34:50,791 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-06-13 07:34:50,791 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:34:50,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2021-06-13 07:34:50,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 85 transitions, 180 flow [2021-06-13 07:34:50,794 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 73 transitions, 152 flow [2021-06-13 07:34:50,807 INFO L129 PetriNetUnfolder]: 1/72 cut-off events. [2021-06-13 07:34:50,808 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:34:50,808 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:34:50,808 INFO L255 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] [2021-06-13 07:34:50,809 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:34:50,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:34:50,813 INFO L82 PathProgramCache]: Analyzing trace with hash 85745205, now seen corresponding path program 1 times [2021-06-13 07:34:50,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:34:50,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438214266] [2021-06-13 07:34:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:34:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:34:51,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:51,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:51,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:51,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:34:51,257 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:34:51,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:34:51,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:51,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:51,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:51,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:51,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:51,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:51,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:34:51,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:34:51,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438214266] [2021-06-13 07:34:51,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438214266] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:34:51,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:34:51,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:34:51,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512911000] [2021-06-13 07:34:51,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:34:51,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:34:51,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:34:51,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:34:51,329 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 85 [2021-06-13 07:34:51,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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) [2021-06-13 07:34:51,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:34:51,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 85 [2021-06-13 07:34:51,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:34:51,531 INFO L129 PetriNetUnfolder]: 24/148 cut-off events. [2021-06-13 07:34:51,532 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:34:51,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 148 events. 24/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 415 event pairs, 5 based on Foata normal form. 6/150 useless extension candidates. Maximal degree in co-relation 173. Up to 31 conditions per place. [2021-06-13 07:34:51,535 INFO L132 encePairwiseOnDemand]: 77/85 looper letters, 8 selfloop transitions, 3 changer transitions 19/93 dead transitions. [2021-06-13 07:34:51,535 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 93 transitions, 252 flow [2021-06-13 07:34:51,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:34:51,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:34:51,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 682 transitions. [2021-06-13 07:34:51,553 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8915032679738563 [2021-06-13 07:34:51,553 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 682 transitions. [2021-06-13 07:34:51,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 682 transitions. [2021-06-13 07:34:51,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:34:51,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 682 transitions. [2021-06-13 07:34:51,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.77777777777777) internal successors, (682), 9 states have internal predecessors, (682), 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) [2021-06-13 07:34:51,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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) [2021-06-13 07:34:51,574 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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) [2021-06-13 07:34:51,576 INFO L185 Difference]: Start difference. First operand has 79 places, 73 transitions, 152 flow. Second operand 9 states and 682 transitions. [2021-06-13 07:34:51,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 93 transitions, 252 flow [2021-06-13 07:34:51,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 93 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 07:34:51,587 INFO L241 Difference]: Finished difference. Result has 92 places, 74 transitions, 191 flow [2021-06-13 07:34:51,589 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=191, PETRI_PLACES=92, PETRI_TRANSITIONS=74} [2021-06-13 07:34:51,590 INFO L335 CegarLoopForPetriNet]: 79 programPoint places, 13 predicate places. [2021-06-13 07:34:51,590 INFO L482 AbstractCegarLoop]: Abstraction has has 92 places, 74 transitions, 191 flow [2021-06-13 07:34:51,590 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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) [2021-06-13 07:34:51,590 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:34:51,590 INFO L255 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] [2021-06-13 07:34:51,591 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:34:51,591 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:34:51,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:34:51,592 INFO L82 PathProgramCache]: Analyzing trace with hash 584754742, now seen corresponding path program 1 times [2021-06-13 07:34:51,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:34:51,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166254615] [2021-06-13 07:34:51,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:34:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:34:51,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:51,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:51,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:51,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:34:51,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:51,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:34:51,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:51,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 07:34:51,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:51,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:34:51,818 INFO L142 QuantifierPusher]: treesize reduction 37, result has 47.9 percent of original size [2021-06-13 07:34:51,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-06-13 07:34:51,845 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:34:51,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:34:51,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:51,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:51,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:51,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:51,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:51,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:51,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:34:51,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:34:51,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166254615] [2021-06-13 07:34:51,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166254615] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:34:51,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:34:51,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 07:34:51,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757437303] [2021-06-13 07:34:51,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 07:34:51,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:34:51,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 07:34:51,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-13 07:34:51,895 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 85 [2021-06-13 07:34:51,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 74 transitions, 191 flow. Second operand has 10 states, 10 states have (on average 66.1) internal successors, (661), 10 states have internal predecessors, (661), 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) [2021-06-13 07:34:51,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:34:51,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 85 [2021-06-13 07:34:51,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:34:52,273 INFO L129 PetriNetUnfolder]: 163/474 cut-off events. [2021-06-13 07:34:52,273 INFO L130 PetriNetUnfolder]: For 284/284 co-relation queries the response was YES. [2021-06-13 07:34:52,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 474 events. 163/474 cut-off events. For 284/284 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2517 event pairs, 60 based on Foata normal form. 16/454 useless extension candidates. Maximal degree in co-relation 975. Up to 165 conditions per place. [2021-06-13 07:34:52,278 INFO L132 encePairwiseOnDemand]: 73/85 looper letters, 14 selfloop transitions, 8 changer transitions 38/118 dead transitions. [2021-06-13 07:34:52,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 118 transitions, 427 flow [2021-06-13 07:34:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 07:34:52,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-06-13 07:34:52,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1042 transitions. [2021-06-13 07:34:52,282 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8172549019607843 [2021-06-13 07:34:52,282 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1042 transitions. [2021-06-13 07:34:52,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1042 transitions. [2021-06-13 07:34:52,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:34:52,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1042 transitions. [2021-06-13 07:34:52,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 69.46666666666667) internal successors, (1042), 15 states have internal predecessors, (1042), 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) [2021-06-13 07:34:52,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 85.0) internal successors, (1360), 16 states have internal predecessors, (1360), 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) [2021-06-13 07:34:52,288 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 85.0) internal successors, (1360), 16 states have internal predecessors, (1360), 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) [2021-06-13 07:34:52,288 INFO L185 Difference]: Start difference. First operand has 92 places, 74 transitions, 191 flow. Second operand 15 states and 1042 transitions. [2021-06-13 07:34:52,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 118 transitions, 427 flow [2021-06-13 07:34:52,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 118 transitions, 406 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-06-13 07:34:52,293 INFO L241 Difference]: Finished difference. Result has 107 places, 78 transitions, 262 flow [2021-06-13 07:34:52,293 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=262, PETRI_PLACES=107, PETRI_TRANSITIONS=78} [2021-06-13 07:34:52,294 INFO L335 CegarLoopForPetriNet]: 79 programPoint places, 28 predicate places. [2021-06-13 07:34:52,294 INFO L482 AbstractCegarLoop]: Abstraction has has 107 places, 78 transitions, 262 flow [2021-06-13 07:34:52,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 66.1) internal successors, (661), 10 states have internal predecessors, (661), 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) [2021-06-13 07:34:52,295 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:34:52,295 INFO L255 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] [2021-06-13 07:34:52,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:34:52,295 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:34:52,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:34:52,296 INFO L82 PathProgramCache]: Analyzing trace with hash -922943036, now seen corresponding path program 1 times [2021-06-13 07:34:52,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:34:52,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304634380] [2021-06-13 07:34:52,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:34:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:34:52,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:52,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:52,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:52,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:34:52,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:52,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:34:52,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:52,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 07:34:52,405 INFO L142 QuantifierPusher]: treesize reduction 37, result has 45.6 percent of original size [2021-06-13 07:34:52,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-13 07:34:52,428 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:34:52,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:34:52,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:52,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:52,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:52,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:52,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:52,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:34:52,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:34:52,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304634380] [2021-06-13 07:34:52,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304634380] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:34:52,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:34:52,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-13 07:34:52,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046119043] [2021-06-13 07:34:52,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 07:34:52,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:34:52,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 07:34:52,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-06-13 07:34:52,470 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 85 [2021-06-13 07:34:52,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 78 transitions, 262 flow. Second operand has 9 states, 9 states have (on average 67.22222222222223) internal successors, (605), 9 states have internal predecessors, (605), 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) [2021-06-13 07:34:52,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:34:52,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 85 [2021-06-13 07:34:52,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:34:52,760 INFO L129 PetriNetUnfolder]: 90/297 cut-off events. [2021-06-13 07:34:52,760 INFO L130 PetriNetUnfolder]: For 778/782 co-relation queries the response was YES. [2021-06-13 07:34:52,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 297 events. 90/297 cut-off events. For 778/782 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1165 event pairs, 33 based on Foata normal form. 10/297 useless extension candidates. Maximal degree in co-relation 869. Up to 105 conditions per place. [2021-06-13 07:34:52,762 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 16 selfloop transitions, 5 changer transitions 19/99 dead transitions. [2021-06-13 07:34:52,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 99 transitions, 462 flow [2021-06-13 07:34:52,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 07:34:52,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 07:34:52,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 770 transitions. [2021-06-13 07:34:52,765 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8235294117647058 [2021-06-13 07:34:52,765 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 770 transitions. [2021-06-13 07:34:52,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 770 transitions. [2021-06-13 07:34:52,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:34:52,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 770 transitions. [2021-06-13 07:34:52,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 70.0) internal successors, (770), 11 states have internal predecessors, (770), 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) [2021-06-13 07:34:52,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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) [2021-06-13 07:34:52,769 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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) [2021-06-13 07:34:52,769 INFO L185 Difference]: Start difference. First operand has 107 places, 78 transitions, 262 flow. Second operand 11 states and 770 transitions. [2021-06-13 07:34:52,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 99 transitions, 462 flow [2021-06-13 07:34:52,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 436 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-06-13 07:34:52,777 INFO L241 Difference]: Finished difference. Result has 109 places, 77 transitions, 266 flow [2021-06-13 07:34:52,777 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=266, PETRI_PLACES=109, PETRI_TRANSITIONS=77} [2021-06-13 07:34:52,777 INFO L335 CegarLoopForPetriNet]: 79 programPoint places, 30 predicate places. [2021-06-13 07:34:52,777 INFO L482 AbstractCegarLoop]: Abstraction has has 109 places, 77 transitions, 266 flow [2021-06-13 07:34:52,778 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 67.22222222222223) internal successors, (605), 9 states have internal predecessors, (605), 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) [2021-06-13 07:34:52,778 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:34:52,778 INFO L255 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] [2021-06-13 07:34:52,778 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:34:52,778 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:34:52,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:34:52,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1486369580, now seen corresponding path program 1 times [2021-06-13 07:34:52,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:34:52,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11986068] [2021-06-13 07:34:52,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:34:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:34:52,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:52,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:52,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:52,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:34:52,911 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:34:52,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:34:52,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:52,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:52,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:52,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:52,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:52,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:52,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:34:52,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:34:52,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11986068] [2021-06-13 07:34:52,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11986068] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:34:52,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:34:52,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:34:52,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111794631] [2021-06-13 07:34:52,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:34:52,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:34:52,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:34:52,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:34:52,955 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 85 [2021-06-13 07:34:52,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 77 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 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) [2021-06-13 07:34:52,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:34:52,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 85 [2021-06-13 07:34:52,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:34:53,074 INFO L129 PetriNetUnfolder]: 18/199 cut-off events. [2021-06-13 07:34:53,074 INFO L130 PetriNetUnfolder]: For 593/637 co-relation queries the response was YES. [2021-06-13 07:34:53,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 199 events. 18/199 cut-off events. For 593/637 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 787 event pairs, 5 based on Foata normal form. 7/201 useless extension candidates. Maximal degree in co-relation 513. Up to 26 conditions per place. [2021-06-13 07:34:53,076 INFO L132 encePairwiseOnDemand]: 79/85 looper letters, 12 selfloop transitions, 3 changer transitions 10/91 dead transitions. [2021-06-13 07:34:53,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 91 transitions, 446 flow [2021-06-13 07:34:53,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:34:53,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:34:53,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-06-13 07:34:53,080 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8810457516339869 [2021-06-13 07:34:53,080 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-06-13 07:34:53,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-06-13 07:34:53,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:34:53,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-06-13 07:34:53,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-06-13 07:34:53,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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) [2021-06-13 07:34:53,083 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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) [2021-06-13 07:34:53,083 INFO L185 Difference]: Start difference. First operand has 109 places, 77 transitions, 266 flow. Second operand 9 states and 674 transitions. [2021-06-13 07:34:53,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 91 transitions, 446 flow [2021-06-13 07:34:53,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 91 transitions, 364 flow, removed 37 selfloop flow, removed 12 redundant places. [2021-06-13 07:34:53,088 INFO L241 Difference]: Finished difference. Result has 106 places, 77 transitions, 255 flow [2021-06-13 07:34:53,088 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=255, PETRI_PLACES=106, PETRI_TRANSITIONS=77} [2021-06-13 07:34:53,088 INFO L335 CegarLoopForPetriNet]: 79 programPoint places, 27 predicate places. [2021-06-13 07:34:53,088 INFO L482 AbstractCegarLoop]: Abstraction has has 106 places, 77 transitions, 255 flow [2021-06-13 07:34:53,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 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) [2021-06-13 07:34:53,089 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:34:53,089 INFO L255 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] [2021-06-13 07:34:53,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:34:53,089 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:34:53,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:34:53,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1993437524, now seen corresponding path program 1 times [2021-06-13 07:34:53,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:34:53,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632250408] [2021-06-13 07:34:53,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:34:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:34:53,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:53,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:53,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:53,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:34:53,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:53,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:34:53,166 INFO L142 QuantifierPusher]: treesize reduction 36, result has 46.3 percent of original size [2021-06-13 07:34:53,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-13 07:34:53,187 INFO L142 QuantifierPusher]: treesize reduction 36, result has 46.3 percent of original size [2021-06-13 07:34:53,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-13 07:34:53,208 INFO L142 QuantifierPusher]: treesize reduction 37, result has 47.9 percent of original size [2021-06-13 07:34:53,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-06-13 07:34:53,232 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:34:53,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:34:53,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:53,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:53,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:53,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:53,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:53,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:34:53,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:34:53,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632250408] [2021-06-13 07:34:53,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632250408] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:34:53,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:34:53,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 07:34:53,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763704243] [2021-06-13 07:34:53,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 07:34:53,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:34:53,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 07:34:53,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-06-13 07:34:53,279 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 85 [2021-06-13 07:34:53,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 77 transitions, 255 flow. Second operand has 10 states, 10 states have (on average 66.3) internal successors, (663), 10 states have internal predecessors, (663), 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) [2021-06-13 07:34:53,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:34:53,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 85 [2021-06-13 07:34:53,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:34:53,653 INFO L129 PetriNetUnfolder]: 122/397 cut-off events. [2021-06-13 07:34:53,653 INFO L130 PetriNetUnfolder]: For 1210/1223 co-relation queries the response was YES. [2021-06-13 07:34:53,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1269 conditions, 397 events. 122/397 cut-off events. For 1210/1223 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1897 event pairs, 25 based on Foata normal form. 16/400 useless extension candidates. Maximal degree in co-relation 1202. Up to 146 conditions per place. [2021-06-13 07:34:53,657 INFO L132 encePairwiseOnDemand]: 73/85 looper letters, 17 selfloop transitions, 14 changer transitions 10/99 dead transitions. [2021-06-13 07:34:53,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 99 transitions, 465 flow [2021-06-13 07:34:53,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 07:34:53,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 07:34:53,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 754 transitions. [2021-06-13 07:34:53,659 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8064171122994652 [2021-06-13 07:34:53,660 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 754 transitions. [2021-06-13 07:34:53,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 754 transitions. [2021-06-13 07:34:53,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:34:53,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 754 transitions. [2021-06-13 07:34:53,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 68.54545454545455) internal successors, (754), 11 states have internal predecessors, (754), 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) [2021-06-13 07:34:53,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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) [2021-06-13 07:34:53,665 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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) [2021-06-13 07:34:53,665 INFO L185 Difference]: Start difference. First operand has 106 places, 77 transitions, 255 flow. Second operand 11 states and 754 transitions. [2021-06-13 07:34:53,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 99 transitions, 465 flow [2021-06-13 07:34:53,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 99 transitions, 424 flow, removed 19 selfloop flow, removed 7 redundant places. [2021-06-13 07:34:53,670 INFO L241 Difference]: Finished difference. Result has 108 places, 83 transitions, 312 flow [2021-06-13 07:34:53,670 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=312, PETRI_PLACES=108, PETRI_TRANSITIONS=83} [2021-06-13 07:34:53,671 INFO L335 CegarLoopForPetriNet]: 79 programPoint places, 29 predicate places. [2021-06-13 07:34:53,671 INFO L482 AbstractCegarLoop]: Abstraction has has 108 places, 83 transitions, 312 flow [2021-06-13 07:34:53,671 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 66.3) internal successors, (663), 10 states have internal predecessors, (663), 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) [2021-06-13 07:34:53,671 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:34:53,672 INFO L255 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] [2021-06-13 07:34:53,672 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:34:53,672 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:34:53,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:34:53,672 INFO L82 PathProgramCache]: Analyzing trace with hash 333567366, now seen corresponding path program 2 times [2021-06-13 07:34:53,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:34:53,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558148603] [2021-06-13 07:34:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:34:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:34:53,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:53,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:53,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:53,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:34:53,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:53,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:34:53,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:53,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:34:53,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:53,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:34:53,810 INFO L142 QuantifierPusher]: treesize reduction 47, result has 65.2 percent of original size [2021-06-13 07:34:53,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-06-13 07:34:53,848 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:34:53,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:34:53,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:53,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:53,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:53,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:53,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:53,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:53,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:34:53,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:34:53,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558148603] [2021-06-13 07:34:53,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558148603] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:34:53,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:34:53,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 07:34:53,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604845142] [2021-06-13 07:34:53,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 07:34:53,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:34:53,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 07:34:53,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-06-13 07:34:53,886 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2021-06-13 07:34:53,887 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 83 transitions, 312 flow. Second operand has 10 states, 10 states have (on average 64.5) internal successors, (645), 10 states have internal predecessors, (645), 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) [2021-06-13 07:34:53,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:34:53,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2021-06-13 07:34:53,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:34:54,264 INFO L129 PetriNetUnfolder]: 119/417 cut-off events. [2021-06-13 07:34:54,264 INFO L130 PetriNetUnfolder]: For 1251/1434 co-relation queries the response was YES. [2021-06-13 07:34:54,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1471 conditions, 417 events. 119/417 cut-off events. For 1251/1434 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2143 event pairs, 32 based on Foata normal form. 17/419 useless extension candidates. Maximal degree in co-relation 1400. Up to 138 conditions per place. [2021-06-13 07:34:54,268 INFO L132 encePairwiseOnDemand]: 75/85 looper letters, 26 selfloop transitions, 11 changer transitions 20/113 dead transitions. [2021-06-13 07:34:54,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 113 transitions, 663 flow [2021-06-13 07:34:54,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-13 07:34:54,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-13 07:34:54,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 804 transitions. [2021-06-13 07:34:54,271 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.788235294117647 [2021-06-13 07:34:54,271 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 804 transitions. [2021-06-13 07:34:54,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 804 transitions. [2021-06-13 07:34:54,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:34:54,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 804 transitions. [2021-06-13 07:34:54,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 67.0) internal successors, (804), 12 states have internal predecessors, (804), 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) [2021-06-13 07:34:54,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 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) [2021-06-13 07:34:54,275 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 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) [2021-06-13 07:34:54,275 INFO L185 Difference]: Start difference. First operand has 108 places, 83 transitions, 312 flow. Second operand 12 states and 804 transitions. [2021-06-13 07:34:54,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 113 transitions, 663 flow [2021-06-13 07:34:54,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 113 transitions, 634 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-06-13 07:34:54,281 INFO L241 Difference]: Finished difference. Result has 117 places, 86 transitions, 382 flow [2021-06-13 07:34:54,281 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=382, PETRI_PLACES=117, PETRI_TRANSITIONS=86} [2021-06-13 07:34:54,282 INFO L335 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2021-06-13 07:34:54,282 INFO L482 AbstractCegarLoop]: Abstraction has has 117 places, 86 transitions, 382 flow [2021-06-13 07:34:54,282 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 64.5) internal successors, (645), 10 states have internal predecessors, (645), 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) [2021-06-13 07:34:54,282 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:34:54,282 INFO L255 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] [2021-06-13 07:34:54,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 07:34:54,283 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:34:54,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:34:54,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1971465634, now seen corresponding path program 3 times [2021-06-13 07:34:54,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:34:54,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815613563] [2021-06-13 07:34:54,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:34:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:34:54,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:54,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:54,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:54,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:34:54,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:54,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:34:54,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:54,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 07:34:54,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:54,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:34:54,374 INFO L142 QuantifierPusher]: treesize reduction 21, result has 75.3 percent of original size [2021-06-13 07:34:54,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-06-13 07:34:54,402 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:34:54,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:34:54,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:54,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:54,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:54,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:54,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:54,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:54,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:34:54,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:34:54,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815613563] [2021-06-13 07:34:54,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815613563] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:34:54,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:34:54,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 07:34:54,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873708898] [2021-06-13 07:34:54,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 07:34:54,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:34:54,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 07:34:54,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-06-13 07:34:54,441 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 85 [2021-06-13 07:34:54,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 86 transitions, 382 flow. Second operand has 10 states, 10 states have (on average 65.4) internal successors, (654), 10 states have internal predecessors, (654), 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) [2021-06-13 07:34:54,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:34:54,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 85 [2021-06-13 07:34:54,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:34:54,779 INFO L129 PetriNetUnfolder]: 99/380 cut-off events. [2021-06-13 07:34:54,779 INFO L130 PetriNetUnfolder]: For 2319/2501 co-relation queries the response was YES. [2021-06-13 07:34:54,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 380 events. 99/380 cut-off events. For 2319/2501 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1897 event pairs, 35 based on Foata normal form. 15/381 useless extension candidates. Maximal degree in co-relation 1586. Up to 158 conditions per place. [2021-06-13 07:34:54,785 INFO L132 encePairwiseOnDemand]: 74/85 looper letters, 23 selfloop transitions, 10 changer transitions 20/110 dead transitions. [2021-06-13 07:34:54,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 110 transitions, 811 flow [2021-06-13 07:34:54,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-13 07:34:54,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-13 07:34:54,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 814 transitions. [2021-06-13 07:34:54,791 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7980392156862746 [2021-06-13 07:34:54,791 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 814 transitions. [2021-06-13 07:34:54,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 814 transitions. [2021-06-13 07:34:54,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:34:54,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 814 transitions. [2021-06-13 07:34:54,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 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) [2021-06-13 07:34:54,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 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) [2021-06-13 07:34:54,798 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 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) [2021-06-13 07:34:54,798 INFO L185 Difference]: Start difference. First operand has 117 places, 86 transitions, 382 flow. Second operand 12 states and 814 transitions. [2021-06-13 07:34:54,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 110 transitions, 811 flow [2021-06-13 07:34:54,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 110 transitions, 786 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-06-13 07:34:54,808 INFO L241 Difference]: Finished difference. Result has 123 places, 87 transitions, 432 flow [2021-06-13 07:34:54,808 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=432, PETRI_PLACES=123, PETRI_TRANSITIONS=87} [2021-06-13 07:34:54,808 INFO L335 CegarLoopForPetriNet]: 79 programPoint places, 44 predicate places. [2021-06-13 07:34:54,809 INFO L482 AbstractCegarLoop]: Abstraction has has 123 places, 87 transitions, 432 flow [2021-06-13 07:34:54,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 65.4) internal successors, (654), 10 states have internal predecessors, (654), 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) [2021-06-13 07:34:54,809 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:34:54,809 INFO L255 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] [2021-06-13 07:34:54,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 07:34:54,809 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:34:54,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:34:54,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1320455820, now seen corresponding path program 4 times [2021-06-13 07:34:54,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:34:54,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2624147] [2021-06-13 07:34:54,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:34:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:34:54,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:54,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:54,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:54,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:34:54,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:54,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:34:54,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:54,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 07:34:54,901 INFO L142 QuantifierPusher]: treesize reduction 37, result has 41.3 percent of original size [2021-06-13 07:34:54,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-06-13 07:34:54,918 INFO L142 QuantifierPusher]: treesize reduction 27, result has 69.0 percent of original size [2021-06-13 07:34:54,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-06-13 07:34:54,952 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:34:54,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:34:54,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:54,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:54,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:54,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:54,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:54,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:34:54,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:34:54,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2624147] [2021-06-13 07:34:54,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2624147] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:34:54,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:34:54,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 07:34:54,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499959945] [2021-06-13 07:34:54,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 07:34:54,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:34:54,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 07:34:54,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-06-13 07:34:54,997 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 85 [2021-06-13 07:34:54,997 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 87 transitions, 432 flow. Second operand has 10 states, 10 states have (on average 66.3) internal successors, (663), 10 states have internal predecessors, (663), 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) [2021-06-13 07:34:54,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:34:54,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 85 [2021-06-13 07:34:54,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:34:55,410 INFO L129 PetriNetUnfolder]: 77/336 cut-off events. [2021-06-13 07:34:55,410 INFO L130 PetriNetUnfolder]: For 3125/3306 co-relation queries the response was YES. [2021-06-13 07:34:55,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 336 events. 77/336 cut-off events. For 3125/3306 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1640 event pairs, 24 based on Foata normal form. 18/340 useless extension candidates. Maximal degree in co-relation 1542. Up to 107 conditions per place. [2021-06-13 07:34:55,414 INFO L132 encePairwiseOnDemand]: 74/85 looper letters, 21 selfloop transitions, 17 changer transitions 20/116 dead transitions. [2021-06-13 07:34:55,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 116 transitions, 1048 flow [2021-06-13 07:34:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:34:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:34:55,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 896 transitions. [2021-06-13 07:34:55,443 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8108597285067873 [2021-06-13 07:34:55,444 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 896 transitions. [2021-06-13 07:34:55,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 896 transitions. [2021-06-13 07:34:55,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:34:55,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 896 transitions. [2021-06-13 07:34:55,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 68.92307692307692) internal successors, (896), 13 states have internal predecessors, (896), 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) [2021-06-13 07:34:55,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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) [2021-06-13 07:34:55,449 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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) [2021-06-13 07:34:55,449 INFO L185 Difference]: Start difference. First operand has 123 places, 87 transitions, 432 flow. Second operand 13 states and 896 transitions. [2021-06-13 07:34:55,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 116 transitions, 1048 flow [2021-06-13 07:34:55,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 116 transitions, 875 flow, removed 77 selfloop flow, removed 10 redundant places. [2021-06-13 07:34:55,463 INFO L241 Difference]: Finished difference. Result has 127 places, 91 transitions, 493 flow [2021-06-13 07:34:55,463 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=493, PETRI_PLACES=127, PETRI_TRANSITIONS=91} [2021-06-13 07:34:55,464 INFO L335 CegarLoopForPetriNet]: 79 programPoint places, 48 predicate places. [2021-06-13 07:34:55,464 INFO L482 AbstractCegarLoop]: Abstraction has has 127 places, 91 transitions, 493 flow [2021-06-13 07:34:55,464 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 66.3) internal successors, (663), 10 states have internal predecessors, (663), 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) [2021-06-13 07:34:55,464 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:34:55,464 INFO L255 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] [2021-06-13 07:34:55,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 07:34:55,465 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:34:55,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:34:55,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1567934273, now seen corresponding path program 1 times [2021-06-13 07:34:55,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:34:55,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002839574] [2021-06-13 07:34:55,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:34:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:34:55,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:55,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:55,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:55,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:34:55,521 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:34:55,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:34:55,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:55,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:34:55,549 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:34:55,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:55,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:55,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:34:55,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:34:55,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002839574] [2021-06-13 07:34:55,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002839574] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:34:55,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:34:55,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:34:55,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771256483] [2021-06-13 07:34:55,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:34:55,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:34:55,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:34:55,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:34:55,562 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 85 [2021-06-13 07:34:55,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 91 transitions, 493 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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) [2021-06-13 07:34:55,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:34:55,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 85 [2021-06-13 07:34:55,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:34:55,725 INFO L129 PetriNetUnfolder]: 111/458 cut-off events. [2021-06-13 07:34:55,726 INFO L130 PetriNetUnfolder]: For 1711/1719 co-relation queries the response was YES. [2021-06-13 07:34:55,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 458 events. 111/458 cut-off events. For 1711/1719 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2940 event pairs, 19 based on Foata normal form. 5/425 useless extension candidates. Maximal degree in co-relation 1247. Up to 79 conditions per place. [2021-06-13 07:34:55,730 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 13 selfloop transitions, 14 changer transitions 6/107 dead transitions. [2021-06-13 07:34:55,730 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 107 transitions, 524 flow [2021-06-13 07:34:55,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:34:55,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:34:55,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 755 transitions. [2021-06-13 07:34:55,733 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.888235294117647 [2021-06-13 07:34:55,734 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 755 transitions. [2021-06-13 07:34:55,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 755 transitions. [2021-06-13 07:34:55,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:34:55,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 755 transitions. [2021-06-13 07:34:55,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.5) internal successors, (755), 10 states have internal predecessors, (755), 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) [2021-06-13 07:34:55,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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) [2021-06-13 07:34:55,740 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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) [2021-06-13 07:34:55,740 INFO L185 Difference]: Start difference. First operand has 127 places, 91 transitions, 493 flow. Second operand 10 states and 755 transitions. [2021-06-13 07:34:55,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 107 transitions, 524 flow [2021-06-13 07:34:55,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 107 transitions, 464 flow, removed 15 selfloop flow, removed 15 redundant places. [2021-06-13 07:34:55,747 INFO L241 Difference]: Finished difference. Result has 119 places, 98 transitions, 441 flow [2021-06-13 07:34:55,747 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=441, PETRI_PLACES=119, PETRI_TRANSITIONS=98} [2021-06-13 07:34:55,748 INFO L335 CegarLoopForPetriNet]: 79 programPoint places, 40 predicate places. [2021-06-13 07:34:55,748 INFO L482 AbstractCegarLoop]: Abstraction has has 119 places, 98 transitions, 441 flow [2021-06-13 07:34:55,748 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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) [2021-06-13 07:34:55,748 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:34:55,748 INFO L255 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] [2021-06-13 07:34:55,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-13 07:34:55,748 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:34:55,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:34:55,749 INFO L82 PathProgramCache]: Analyzing trace with hash -124510852, now seen corresponding path program 1 times [2021-06-13 07:34:55,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:34:55,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253255754] [2021-06-13 07:34:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:34:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:34:55,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:55,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:55,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:55,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:34:55,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:55,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:34:55,822 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:34:55,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:34:55,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:55,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:34:55,846 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:34:55,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:55,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:55,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:55,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:34:55,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:34:55,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253255754] [2021-06-13 07:34:55,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253255754] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:34:55,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:34:55,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:34:55,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100810067] [2021-06-13 07:34:55,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:34:55,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:34:55,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:34:55,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:34:55,860 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 85 [2021-06-13 07:34:55,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 98 transitions, 441 flow. Second operand has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 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) [2021-06-13 07:34:55,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:34:55,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 85 [2021-06-13 07:34:55,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:34:56,041 INFO L129 PetriNetUnfolder]: 60/349 cut-off events. [2021-06-13 07:34:56,041 INFO L130 PetriNetUnfolder]: For 418/575 co-relation queries the response was YES. [2021-06-13 07:34:56,043 INFO L84 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 349 events. 60/349 cut-off events. For 418/575 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2307 event pairs, 0 based on Foata normal form. 63/387 useless extension candidates. Maximal degree in co-relation 876. Up to 54 conditions per place. [2021-06-13 07:34:56,044 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 11 selfloop transitions, 17 changer transitions 21/114 dead transitions. [2021-06-13 07:34:56,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 114 transitions, 584 flow [2021-06-13 07:34:56,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:34:56,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:34:56,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 972 transitions. [2021-06-13 07:34:56,047 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8796380090497737 [2021-06-13 07:34:56,047 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 972 transitions. [2021-06-13 07:34:56,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 972 transitions. [2021-06-13 07:34:56,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:34:56,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 972 transitions. [2021-06-13 07:34:56,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.76923076923077) internal successors, (972), 13 states have internal predecessors, (972), 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) [2021-06-13 07:34:56,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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) [2021-06-13 07:34:56,052 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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) [2021-06-13 07:34:56,052 INFO L185 Difference]: Start difference. First operand has 119 places, 98 transitions, 441 flow. Second operand 13 states and 972 transitions. [2021-06-13 07:34:56,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 114 transitions, 584 flow [2021-06-13 07:34:56,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 114 transitions, 498 flow, removed 33 selfloop flow, removed 14 redundant places. [2021-06-13 07:34:56,057 INFO L241 Difference]: Finished difference. Result has 124 places, 90 transitions, 377 flow [2021-06-13 07:34:56,057 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=377, PETRI_PLACES=124, PETRI_TRANSITIONS=90} [2021-06-13 07:34:56,057 INFO L335 CegarLoopForPetriNet]: 79 programPoint places, 45 predicate places. [2021-06-13 07:34:56,057 INFO L482 AbstractCegarLoop]: Abstraction has has 124 places, 90 transitions, 377 flow [2021-06-13 07:34:56,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 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) [2021-06-13 07:34:56,058 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:34:56,058 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:34:56,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-13 07:34:56,058 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:34:56,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:34:56,058 INFO L82 PathProgramCache]: Analyzing trace with hash -181132491, now seen corresponding path program 1 times [2021-06-13 07:34:56,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:34:56,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052683948] [2021-06-13 07:34:56,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:34:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:34:56,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:56,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:56,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:56,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:34:56,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:56,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:34:56,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:56,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 07:34:56,185 INFO L142 QuantifierPusher]: treesize reduction 9, result has 73.5 percent of original size [2021-06-13 07:34:56,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-06-13 07:34:56,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:56,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-13 07:34:56,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:56,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-13 07:34:56,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:56,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-06-13 07:34:56,259 INFO L142 QuantifierPusher]: treesize reduction 19, result has 76.3 percent of original size [2021-06-13 07:34:56,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 07:34:56,281 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:34:56,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:34:56,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:56,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:56,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:56,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:56,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:56,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:56,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:34:56,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:34:56,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052683948] [2021-06-13 07:34:56,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052683948] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:34:56,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:34:56,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-06-13 07:34:56,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653449412] [2021-06-13 07:34:56,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-13 07:34:56,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:34:56,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-13 07:34:56,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-13 07:34:56,323 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 85 [2021-06-13 07:34:56,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 90 transitions, 377 flow. Second operand has 13 states, 13 states have (on average 63.38461538461539) internal successors, (824), 13 states have internal predecessors, (824), 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) [2021-06-13 07:34:56,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:34:56,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 85 [2021-06-13 07:34:56,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:34:56,554 INFO L129 PetriNetUnfolder]: 15/189 cut-off events. [2021-06-13 07:34:56,554 INFO L130 PetriNetUnfolder]: For 250/257 co-relation queries the response was YES. [2021-06-13 07:34:56,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 189 events. 15/189 cut-off events. For 250/257 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 829 event pairs, 0 based on Foata normal form. 3/187 useless extension candidates. Maximal degree in co-relation 457. Up to 22 conditions per place. [2021-06-13 07:34:56,555 INFO L132 encePairwiseOnDemand]: 75/85 looper letters, 14 selfloop transitions, 6 changer transitions 10/96 dead transitions. [2021-06-13 07:34:56,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 96 transitions, 451 flow [2021-06-13 07:34:56,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 07:34:56,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 07:34:56,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 709 transitions. [2021-06-13 07:34:56,557 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.758288770053476 [2021-06-13 07:34:56,557 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 709 transitions. [2021-06-13 07:34:56,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 709 transitions. [2021-06-13 07:34:56,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:34:56,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 709 transitions. [2021-06-13 07:34:56,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 64.45454545454545) internal successors, (709), 11 states have internal predecessors, (709), 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) [2021-06-13 07:34:56,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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) [2021-06-13 07:34:56,561 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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) [2021-06-13 07:34:56,561 INFO L185 Difference]: Start difference. First operand has 124 places, 90 transitions, 377 flow. Second operand 11 states and 709 transitions. [2021-06-13 07:34:56,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 96 transitions, 451 flow [2021-06-13 07:34:56,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 96 transitions, 403 flow, removed 7 selfloop flow, removed 15 redundant places. [2021-06-13 07:34:56,564 INFO L241 Difference]: Finished difference. Result has 117 places, 86 transitions, 327 flow [2021-06-13 07:34:56,564 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=327, PETRI_PLACES=117, PETRI_TRANSITIONS=86} [2021-06-13 07:34:56,564 INFO L335 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2021-06-13 07:34:56,564 INFO L482 AbstractCegarLoop]: Abstraction has has 117 places, 86 transitions, 327 flow [2021-06-13 07:34:56,565 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 63.38461538461539) internal successors, (824), 13 states have internal predecessors, (824), 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) [2021-06-13 07:34:56,565 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:34:56,565 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:34:56,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-13 07:34:56,565 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:34:56,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:34:56,565 INFO L82 PathProgramCache]: Analyzing trace with hash 958061677, now seen corresponding path program 2 times [2021-06-13 07:34:56,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:34:56,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541935902] [2021-06-13 07:34:56,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:34:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-13 07:34:56,596 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-13 07:34:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-13 07:34:56,628 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-13 07:34:56,655 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-13 07:34:56,655 INFO L573 BasicCegarLoop]: Counterexample might be feasible [2021-06-13 07:34:56,655 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-13 07:34:56,655 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/3) [2021-06-13 07:34:56,657 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 07:34:56,657 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:34:56,658 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:34:56,658 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:34:56,658 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:34:56,658 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:34:56,658 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:34:56,658 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:34:56,658 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == P0Thread1of1ForFork1======== [2021-06-13 07:34:56,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 85 transitions, 180 flow [2021-06-13 07:34:56,664 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-06-13 07:34:56,665 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:34:56,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2021-06-13 07:34:56,665 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 85 transitions, 180 flow [2021-06-13 07:34:56,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 83 transitions, 172 flow [2021-06-13 07:34:56,667 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2021-06-13 07:34:56,668 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:34:56,668 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:34:56,668 INFO L255 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] [2021-06-13 07:34:56,668 INFO L430 AbstractCegarLoop]: === Iteration 1 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:34:56,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:34:56,668 INFO L82 PathProgramCache]: Analyzing trace with hash 182407281, now seen corresponding path program 1 times [2021-06-13 07:34:56,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:34:56,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397518221] [2021-06-13 07:34:56,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:34:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:34:56,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:56,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:56,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:56,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:34:56,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:34:56,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:34:56,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397518221] [2021-06-13 07:34:56,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397518221] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:34:56,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:34:56,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-13 07:34:56,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081881894] [2021-06-13 07:34:56,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 07:34:56,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:34:56,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 07:34:56,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 07:34:56,689 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 85 [2021-06-13 07:34:56,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2021-06-13 07:34:56,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:34:56,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 85 [2021-06-13 07:34:56,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:34:56,720 INFO L129 PetriNetUnfolder]: 16/190 cut-off events. [2021-06-13 07:34:56,720 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:34:56,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 190 events. 16/190 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 649 event pairs, 11 based on Foata normal form. 9/188 useless extension candidates. Maximal degree in co-relation 190. Up to 27 conditions per place. [2021-06-13 07:34:56,721 INFO L132 encePairwiseOnDemand]: 80/85 looper letters, 0 selfloop transitions, 0 changer transitions 82/82 dead transitions. [2021-06-13 07:34:56,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 82 transitions, 188 flow [2021-06-13 07:34:56,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 07:34:56,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 07:34:56,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2021-06-13 07:34:56,722 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9372549019607843 [2021-06-13 07:34:56,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2021-06-13 07:34:56,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2021-06-13 07:34:56,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:34:56,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2021-06-13 07:34:56,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2021-06-13 07:34:56,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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) [2021-06-13 07:34:56,724 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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) [2021-06-13 07:34:56,724 INFO L185 Difference]: Start difference. First operand has 88 places, 83 transitions, 172 flow. Second operand 3 states and 239 transitions. [2021-06-13 07:34:56,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 82 transitions, 188 flow [2021-06-13 07:34:56,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 82 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 07:34:56,725 INFO L241 Difference]: Finished difference. Result has 86 places, 0 transitions, 0 flow [2021-06-13 07:34:56,726 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=86, PETRI_TRANSITIONS=0} [2021-06-13 07:34:56,726 INFO L335 CegarLoopForPetriNet]: 88 programPoint places, -2 predicate places. [2021-06-13 07:34:56,726 INFO L482 AbstractCegarLoop]: Abstraction has has 86 places, 0 transitions, 0 flow [2021-06-13 07:34:56,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2021-06-13 07:34:56,726 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-13 07:34:56,726 INFO L301 ceAbstractionStarter]: Result for error location P0Thread1of1ForFork1 was SAFE (3/3) [2021-06-13 07:34:56,727 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:34:56,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:34:56 BasicIcfg [2021-06-13 07:34:56,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:34:56,798 INFO L168 Benchmark]: Toolchain (without parser) took 8484.22 ms. Allocated memory was 255.9 MB in the beginning and 434.1 MB in the end (delta: 178.3 MB). Free memory was 218.5 MB in the beginning and 328.4 MB in the end (delta: -109.9 MB). Peak memory consumption was 68.9 MB. Max. memory is 8.0 GB. [2021-06-13 07:34:56,799 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 255.9 MB. Free memory is still 236.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:34:56,799 INFO L168 Benchmark]: CACSL2BoogieTranslator took 491.56 ms. Allocated memory is still 255.9 MB. Free memory was 218.3 MB in the beginning and 214.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-13 07:34:56,799 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.87 ms. Allocated memory is still 255.9 MB. Free memory was 214.0 MB in the beginning and 211.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:34:56,799 INFO L168 Benchmark]: Boogie Preprocessor took 29.84 ms. Allocated memory is still 255.9 MB. Free memory was 211.3 MB in the beginning and 209.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:34:56,799 INFO L168 Benchmark]: RCFGBuilder took 1754.00 ms. Allocated memory is still 255.9 MB. Free memory was 209.2 MB in the beginning and 153.9 MB in the end (delta: 55.3 MB). Peak memory consumption was 125.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:34:56,799 INFO L168 Benchmark]: TraceAbstraction took 6159.00 ms. Allocated memory was 255.9 MB in the beginning and 434.1 MB in the end (delta: 178.3 MB). Free memory was 153.9 MB in the beginning and 328.4 MB in the end (delta: -174.5 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. [2021-06-13 07:34:56,800 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 255.9 MB. Free memory is still 236.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 491.56 ms. Allocated memory is still 255.9 MB. Free memory was 218.3 MB in the beginning and 214.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.87 ms. Allocated memory is still 255.9 MB. Free memory was 214.0 MB in the beginning and 211.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.84 ms. Allocated memory is still 255.9 MB. Free memory was 211.3 MB in the beginning and 209.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1754.00 ms. Allocated memory is still 255.9 MB. Free memory was 209.2 MB in the beginning and 153.9 MB in the end (delta: 55.3 MB). Peak memory consumption was 125.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6159.00 ms. Allocated memory was 255.9 MB in the beginning and 434.1 MB in the end (delta: 178.3 MB). Free memory was 153.9 MB in the beginning and 328.4 MB in the end (delta: -174.5 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; VAL [__unbuffered_cnt=0] [L709] 0 _Bool main$tmp_guard0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0] [L710] 0 _Bool main$tmp_guard1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0] [L712] 0 int x = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0] [L714] 0 int y = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L715] 0 _Bool y$flush_delayed; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0] [L716] 0 int y$mem_tmp; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0] [L717] 0 _Bool y$r_buff0_thd0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0] [L718] 0 _Bool y$r_buff0_thd1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0] [L719] 0 _Bool y$r_buff0_thd2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0] [L720] 0 _Bool y$r_buff1_thd0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0] [L721] 0 _Bool y$r_buff1_thd1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0] [L722] 0 _Bool y$r_buff1_thd2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0] [L723] 0 _Bool y$read_delayed; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0] [L724] 0 int *y$read_delayed_var; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}] [L725] 0 int y$w_buff0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0] [L726] 0 _Bool y$w_buff0_used; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0] [L727] 0 int y$w_buff1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0] [L728] 0 _Bool y$w_buff1_used; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L729] 0 _Bool weak$$choice0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L730] 0 _Bool weak$$choice2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L790] 0 pthread_t t2477; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L791] FCALL, FORK 0 pthread_create(&t2477, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L734] 1 y$w_buff1 = y$w_buff0 [L735] 1 y$w_buff0 = 2 [L736] 1 y$w_buff1_used = y$w_buff0_used [L737] 1 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 1 !(!expression) [L739] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L740] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L741] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L742] 1 y$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L745] 1 x = 1 VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L792] 0 pthread_t t2478; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L793] FCALL, FORK 0 pthread_create(&t2478, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L762] 2 x = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L765] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L768] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L768] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L769] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L769] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L770] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L770] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L771] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L771] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L772] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L772] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L748] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L748] 1 y = y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L749] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L749] 1 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L750] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L750] 1 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L751] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L751] 1 y$r_buff0_thd1 = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L752] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 [L752] 1 y$r_buff1_thd1 = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 [L755] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L795] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L3] COND FALSE 0 !(!cond) VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L799] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L799] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L799] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L799] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L800] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L800] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L801] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L801] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L802] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L802] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L803] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L803] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L806] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L807] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L808] 0 y$flush_delayed = weak$$choice2 [L809] 0 y$mem_tmp = y [L810] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L810] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L811] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L811] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L812] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L812] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L813] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L813] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L814] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L814] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L815] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L815] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L816] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L816] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] 0 main$tmp_guard1 = !(x == 2 && y == 2) [L818] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L818] 0 y = y$flush_delayed ? y$mem_tmp : y [L819] 0 y$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L18] COND TRUE 0 !expression VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L18] 0 reach_error() VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: P0 with 1 thread instances CFG has 5 procedures, 103 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 44.0ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 38.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 103 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 13.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 5884.7ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 3362.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 21.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 126 SDtfs, 351 SDslu, 490 SDs, 0 SdLazy, 878 SolverSat, 165 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 945.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1968.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=493occurred in iteration=8, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 47.6ms SsaConstructionTime, 548.3ms SatisfiabilityAnalysisTime, 1637.9ms InterpolantComputationTime, 734 NumberOfCodeBlocks, 734 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 657 ConstructedInterpolants, 0 QuantifiedInterpolants, 3651 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: P0Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 103 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 68.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 37.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 9 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1ms SsaConstructionTime, 3.1ms SatisfiabilityAnalysisTime, 11.7ms InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 62 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...