/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-18 23:12:04,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 23:12:04,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 23:12:04,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 23:12:04,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 23:12:04,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 23:12:04,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 23:12:04,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 23:12:04,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 23:12:05,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 23:12:05,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 23:12:05,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 23:12:05,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 23:12:05,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 23:12:05,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 23:12:05,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 23:12:05,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 23:12:05,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 23:12:05,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 23:12:05,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 23:12:05,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 23:12:05,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 23:12:05,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 23:12:05,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 23:12:05,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 23:12:05,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 23:12:05,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 23:12:05,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 23:12:05,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 23:12:05,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 23:12:05,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 23:12:05,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 23:12:05,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 23:12:05,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 23:12:05,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 23:12:05,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 23:12:05,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 23:12:05,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 23:12:05,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 23:12:05,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 23:12:05,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 23:12:05,028 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 [2022-01-18 23:12:05,051 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 23:12:05,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 23:12:05,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 23:12:05,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 23:12:05,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 23:12:05,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 23:12:05,053 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 23:12:05,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 23:12:05,053 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 23:12:05,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 23:12:05,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 23:12:05,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 23:12:05,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 23:12:05,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 23:12:05,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 23:12:05,054 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 23:12:05,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 23:12:05,055 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 23:12:05,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 23:12:05,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 23:12:05,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 23:12:05,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 23:12:05,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 23:12:05,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 23:12:05,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 23:12:05,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 23:12:05,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 23:12:05,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 23:12:05,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 23:12:05,056 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 23:12:05,056 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-18 23:12:05,056 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 23:12:05,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 23:12:05,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 23:12:05,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 23:12:05,227 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 23:12:05,228 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 23:12:05,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2022-01-18 23:12:05,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9543eac02/f17d20c33ae4456aa01e8ebf42ca51ab/FLAG53b2f9f2e [2022-01-18 23:12:05,722 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 23:12:05,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2022-01-18 23:12:05,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9543eac02/f17d20c33ae4456aa01e8ebf42ca51ab/FLAG53b2f9f2e [2022-01-18 23:12:06,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9543eac02/f17d20c33ae4456aa01e8ebf42ca51ab [2022-01-18 23:12:06,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 23:12:06,259 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 23:12:06,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 23:12:06,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 23:12:06,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 23:12:06,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 11:12:06" (1/1) ... [2022-01-18 23:12:06,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ff610e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:12:06, skipping insertion in model container [2022-01-18 23:12:06,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 11:12:06" (1/1) ... [2022-01-18 23:12:06,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 23:12:06,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 23:12:06,412 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-01-18 23:12:06,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 23:12:06,608 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 23:12:06,617 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-01-18 23:12:06,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 23:12:06,685 INFO L208 MainTranslator]: Completed translation [2022-01-18 23:12:06,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:12:06 WrapperNode [2022-01-18 23:12:06,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 23:12:06,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 23:12:06,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 23:12:06,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 23:12:06,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:12:06" (1/1) ... [2022-01-18 23:12:06,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:12:06" (1/1) ... [2022-01-18 23:12:06,726 INFO L137 Inliner]: procedures = 364, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2022-01-18 23:12:06,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 23:12:06,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 23:12:06,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 23:12:06,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 23:12:06,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:12:06" (1/1) ... [2022-01-18 23:12:06,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:12:06" (1/1) ... [2022-01-18 23:12:06,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:12:06" (1/1) ... [2022-01-18 23:12:06,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:12:06" (1/1) ... [2022-01-18 23:12:06,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:12:06" (1/1) ... [2022-01-18 23:12:06,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:12:06" (1/1) ... [2022-01-18 23:12:06,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:12:06" (1/1) ... [2022-01-18 23:12:06,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 23:12:06,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 23:12:06,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 23:12:06,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 23:12:06,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:12:06" (1/1) ... [2022-01-18 23:12:06,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 23:12:06,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 23:12:06,779 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 23:12:06,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 23:12:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 23:12:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 23:12:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 23:12:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 23:12:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-01-18 23:12:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 23:12:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2022-01-18 23:12:06,804 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2022-01-18 23:12:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 23:12:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 23:12:06,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 23:12:06,806 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 23:12:06,875 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 23:12:06,876 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 23:12:07,031 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 23:12:07,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 23:12:07,037 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 23:12:07,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 11:12:07 BoogieIcfgContainer [2022-01-18 23:12:07,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 23:12:07,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 23:12:07,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 23:12:07,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 23:12:07,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 11:12:06" (1/3) ... [2022-01-18 23:12:07,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb62f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 11:12:07, skipping insertion in model container [2022-01-18 23:12:07,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:12:06" (2/3) ... [2022-01-18 23:12:07,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb62f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 11:12:07, skipping insertion in model container [2022-01-18 23:12:07,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 11:12:07" (3/3) ... [2022-01-18 23:12:07,044 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2022-01-18 23:12:07,047 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 23:12:07,047 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 23:12:07,047 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 23:12:07,073 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,073 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,074 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,074 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,074 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,074 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,074 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,074 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,075 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,075 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,075 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,075 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,075 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,075 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,075 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,076 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,076 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,077 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,077 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,078 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,078 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,078 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,079 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,080 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,080 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,080 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,081 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,081 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,081 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,081 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,081 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,081 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,081 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,082 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,082 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,082 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,082 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,082 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,082 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,082 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,082 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,083 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,083 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,083 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,083 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,083 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,085 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,085 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,086 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,086 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,086 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,086 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,086 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,086 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,086 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 23:12:07,089 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-01-18 23:12:07,119 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 23:12:07,124 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 23:12:07,124 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-18 23:12:07,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 97 transitions, 202 flow [2022-01-18 23:12:07,160 INFO L129 PetriNetUnfolder]: 7/96 cut-off events. [2022-01-18 23:12:07,160 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-01-18 23:12:07,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 96 events. 7/96 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2022-01-18 23:12:07,163 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 97 transitions, 202 flow [2022-01-18 23:12:07,166 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 86 transitions, 178 flow [2022-01-18 23:12:07,179 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2022-01-18 23:12:07,179 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-01-18 23:12:07,179 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:12:07,180 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:12:07,180 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 23:12:07,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:12:07,184 INFO L85 PathProgramCache]: Analyzing trace with hash 730854198, now seen corresponding path program 1 times [2022-01-18 23:12:07,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:12:07,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846364816] [2022-01-18 23:12:07,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:12:07,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:12:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:12:07,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:12:07,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:12:07,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846364816] [2022-01-18 23:12:07,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846364816] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:12:07,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:12:07,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 23:12:07,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923766397] [2022-01-18 23:12:07,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:12:07,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 23:12:07,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:12:07,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 23:12:07,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 23:12:07,429 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 97 [2022-01-18 23:12:07,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 178 flow. Second operand has 2 states, 2 states have (on average 89.0) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:07,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:12:07,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 97 [2022-01-18 23:12:07,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:12:07,474 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2022-01-18 23:12:07,474 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-18 23:12:07,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 80 events. 2/80 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 4/81 useless extension candidates. Maximal degree in co-relation 35. Up to 3 conditions per place. [2022-01-18 23:12:07,476 INFO L132 encePairwiseOnDemand]: 93/97 looper letters, 2 selfloop transitions, 0 changer transitions 0/80 dead transitions. [2022-01-18 23:12:07,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 80 transitions, 170 flow [2022-01-18 23:12:07,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 23:12:07,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-18 23:12:07,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 180 transitions. [2022-01-18 23:12:07,493 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9278350515463918 [2022-01-18 23:12:07,493 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 180 transitions. [2022-01-18 23:12:07,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 180 transitions. [2022-01-18 23:12:07,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:12:07,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 180 transitions. [2022-01-18 23:12:07,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 90.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:07,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:07,514 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:07,515 INFO L186 Difference]: Start difference. First operand has 84 places, 86 transitions, 178 flow. Second operand 2 states and 180 transitions. [2022-01-18 23:12:07,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 80 transitions, 170 flow [2022-01-18 23:12:07,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 80 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-18 23:12:07,525 INFO L242 Difference]: Finished difference. Result has 81 places, 80 transitions, 162 flow [2022-01-18 23:12:07,527 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=162, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2022-01-18 23:12:07,532 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2022-01-18 23:12:07,533 INFO L470 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 162 flow [2022-01-18 23:12:07,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 89.0) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:07,533 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:12:07,533 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:12:07,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 23:12:07,534 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 23:12:07,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:12:07,534 INFO L85 PathProgramCache]: Analyzing trace with hash -137135436, now seen corresponding path program 1 times [2022-01-18 23:12:07,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:12:07,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109739472] [2022-01-18 23:12:07,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:12:07,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:12:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:12:07,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:12:07,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:12:07,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109739472] [2022-01-18 23:12:07,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109739472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:12:07,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 23:12:07,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 23:12:07,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82448179] [2022-01-18 23:12:07,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:12:07,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 23:12:07,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:12:07,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 23:12:07,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 23:12:07,645 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 97 [2022-01-18 23:12:07,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:07,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:12:07,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 97 [2022-01-18 23:12:07,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:12:07,687 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2022-01-18 23:12:07,687 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-01-18 23:12:07,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 87 events. 2/87 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 100. Up to 10 conditions per place. [2022-01-18 23:12:07,688 INFO L132 encePairwiseOnDemand]: 94/97 looper letters, 10 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2022-01-18 23:12:07,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 83 transitions, 192 flow [2022-01-18 23:12:07,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 23:12:07,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-18 23:12:07,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2022-01-18 23:12:07,691 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8694158075601375 [2022-01-18 23:12:07,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2022-01-18 23:12:07,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2022-01-18 23:12:07,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:12:07,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2022-01-18 23:12:07,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:07,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:07,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:07,694 INFO L186 Difference]: Start difference. First operand has 81 places, 80 transitions, 162 flow. Second operand 3 states and 253 transitions. [2022-01-18 23:12:07,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 83 transitions, 192 flow [2022-01-18 23:12:07,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 83 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-18 23:12:07,695 INFO L242 Difference]: Finished difference. Result has 84 places, 81 transitions, 174 flow [2022-01-18 23:12:07,696 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2022-01-18 23:12:07,696 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2022-01-18 23:12:07,696 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 174 flow [2022-01-18 23:12:07,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:07,697 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:12:07,697 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:12:07,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 23:12:07,697 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 23:12:07,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:12:07,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1409393791, now seen corresponding path program 1 times [2022-01-18 23:12:07,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:12:07,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261060135] [2022-01-18 23:12:07,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:12:07,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:12:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:12:07,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:12:07,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:12:07,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261060135] [2022-01-18 23:12:07,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261060135] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 23:12:07,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043099996] [2022-01-18 23:12:07,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:12:07,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 23:12:07,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 23:12:07,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 23:12:07,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 23:12:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:12:07,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-18 23:12:07,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 23:12:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 23:12:07,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 23:12:07,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043099996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 23:12:07,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 23:12:07,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-01-18 23:12:07,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587796640] [2022-01-18 23:12:07,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 23:12:07,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 23:12:07,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:12:07,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 23:12:07,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 23:12:07,982 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 97 [2022-01-18 23:12:07,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:07,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:12:07,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 97 [2022-01-18 23:12:07,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:12:08,008 INFO L129 PetriNetUnfolder]: 2/97 cut-off events. [2022-01-18 23:12:08,008 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-18 23:12:08,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 97 events. 2/97 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 114. Up to 9 conditions per place. [2022-01-18 23:12:08,010 INFO L132 encePairwiseOnDemand]: 94/97 looper letters, 9 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2022-01-18 23:12:08,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 84 transitions, 202 flow [2022-01-18 23:12:08,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 23:12:08,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-18 23:12:08,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2022-01-18 23:12:08,012 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8762886597938144 [2022-01-18 23:12:08,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 255 transitions. [2022-01-18 23:12:08,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 255 transitions. [2022-01-18 23:12:08,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:12:08,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 255 transitions. [2022-01-18 23:12:08,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:08,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:08,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:08,021 INFO L186 Difference]: Start difference. First operand has 84 places, 81 transitions, 174 flow. Second operand 3 states and 255 transitions. [2022-01-18 23:12:08,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 84 transitions, 202 flow [2022-01-18 23:12:08,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 84 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-18 23:12:08,023 INFO L242 Difference]: Finished difference. Result has 86 places, 82 transitions, 184 flow [2022-01-18 23:12:08,023 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2022-01-18 23:12:08,025 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2022-01-18 23:12:08,025 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 184 flow [2022-01-18 23:12:08,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:08,025 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:12:08,026 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:12:08,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 23:12:08,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 23:12:08,242 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 23:12:08,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:12:08,242 INFO L85 PathProgramCache]: Analyzing trace with hash -293330369, now seen corresponding path program 1 times [2022-01-18 23:12:08,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:12:08,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599048337] [2022-01-18 23:12:08,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:12:08,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:12:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:12:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 23:12:08,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:12:08,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599048337] [2022-01-18 23:12:08,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599048337] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 23:12:08,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472969177] [2022-01-18 23:12:08,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:12:08,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 23:12:08,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 23:12:08,314 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 23:12:08,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 23:12:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:12:08,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 23:12:08,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 23:12:08,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 23:12:08,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 23:12:08,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 23:12:08,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472969177] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 23:12:08,628 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 23:12:08,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-18 23:12:08,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600023077] [2022-01-18 23:12:08,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 23:12:08,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 23:12:08,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:12:08,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 23:12:08,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-18 23:12:08,633 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 97 [2022-01-18 23:12:08,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 184 flow. Second operand has 10 states, 10 states have (on average 81.9) internal successors, (819), 10 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:08,634 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:12:08,634 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 97 [2022-01-18 23:12:08,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:12:08,696 INFO L129 PetriNetUnfolder]: 2/110 cut-off events. [2022-01-18 23:12:08,696 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-18 23:12:08,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 110 events. 2/110 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 2/111 useless extension candidates. Maximal degree in co-relation 139. Up to 7 conditions per place. [2022-01-18 23:12:08,697 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 9 selfloop transitions, 9 changer transitions 0/90 dead transitions. [2022-01-18 23:12:08,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 90 transitions, 238 flow [2022-01-18 23:12:08,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 23:12:08,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-18 23:12:08,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 740 transitions. [2022-01-18 23:12:08,700 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.847651775486827 [2022-01-18 23:12:08,700 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 740 transitions. [2022-01-18 23:12:08,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 740 transitions. [2022-01-18 23:12:08,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:12:08,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 740 transitions. [2022-01-18 23:12:08,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.22222222222223) internal successors, (740), 9 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:08,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:08,703 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:08,704 INFO L186 Difference]: Start difference. First operand has 86 places, 82 transitions, 184 flow. Second operand 9 states and 740 transitions. [2022-01-18 23:12:08,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 90 transitions, 238 flow [2022-01-18 23:12:08,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-18 23:12:08,706 INFO L242 Difference]: Finished difference. Result has 96 places, 88 transitions, 232 flow [2022-01-18 23:12:08,706 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=232, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2022-01-18 23:12:08,706 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2022-01-18 23:12:08,706 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 232 flow [2022-01-18 23:12:08,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.9) internal successors, (819), 10 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:08,707 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:12:08,707 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:12:08,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 23:12:08,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-18 23:12:08,925 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 23:12:08,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:12:08,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1717411201, now seen corresponding path program 2 times [2022-01-18 23:12:08,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:12:08,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408998411] [2022-01-18 23:12:08,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:12:08,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:12:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:12:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-18 23:12:08,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:12:08,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408998411] [2022-01-18 23:12:08,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408998411] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 23:12:08,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954561774] [2022-01-18 23:12:08,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 23:12:08,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 23:12:08,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 23:12:08,968 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 23:12:08,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 23:12:09,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 23:12:09,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 23:12:09,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 23:12:09,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 23:12:09,143 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-18 23:12:09,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 23:12:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-18 23:12:09,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954561774] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 23:12:09,236 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 23:12:09,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-18 23:12:09,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585393352] [2022-01-18 23:12:09,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 23:12:09,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 23:12:09,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:12:09,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 23:12:09,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-18 23:12:09,239 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 97 [2022-01-18 23:12:09,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 232 flow. Second operand has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:09,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:12:09,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 97 [2022-01-18 23:12:09,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:12:09,298 INFO L129 PetriNetUnfolder]: 2/120 cut-off events. [2022-01-18 23:12:09,299 INFO L130 PetriNetUnfolder]: For 7/21 co-relation queries the response was YES. [2022-01-18 23:12:09,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 120 events. 2/120 cut-off events. For 7/21 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 9/128 useless extension candidates. Maximal degree in co-relation 170. Up to 8 conditions per place. [2022-01-18 23:12:09,301 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 10 selfloop transitions, 9 changer transitions 0/96 dead transitions. [2022-01-18 23:12:09,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 96 transitions, 288 flow [2022-01-18 23:12:09,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 23:12:09,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-18 23:12:09,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 732 transitions. [2022-01-18 23:12:09,304 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8384879725085911 [2022-01-18 23:12:09,305 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 732 transitions. [2022-01-18 23:12:09,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 732 transitions. [2022-01-18 23:12:09,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:12:09,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 732 transitions. [2022-01-18 23:12:09,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 81.33333333333333) internal successors, (732), 9 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:09,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:09,310 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:09,310 INFO L186 Difference]: Start difference. First operand has 96 places, 88 transitions, 232 flow. Second operand 9 states and 732 transitions. [2022-01-18 23:12:09,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 96 transitions, 288 flow [2022-01-18 23:12:09,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 96 transitions, 282 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-01-18 23:12:09,313 INFO L242 Difference]: Finished difference. Result has 106 places, 94 transitions, 276 flow [2022-01-18 23:12:09,314 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=276, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2022-01-18 23:12:09,314 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 22 predicate places. [2022-01-18 23:12:09,314 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 276 flow [2022-01-18 23:12:09,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:09,315 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:12:09,315 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:12:09,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 23:12:09,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 23:12:09,531 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 23:12:09,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:12:09,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1447238555, now seen corresponding path program 3 times [2022-01-18 23:12:09,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:12:09,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719277538] [2022-01-18 23:12:09,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:12:09,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:12:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:12:09,590 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-18 23:12:09,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:12:09,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719277538] [2022-01-18 23:12:09,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719277538] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 23:12:09,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326683802] [2022-01-18 23:12:09,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 23:12:09,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 23:12:09,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 23:12:09,592 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 23:12:09,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 23:12:09,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 23:12:09,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 23:12:09,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 23:12:09,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 23:12:09,804 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-18 23:12:09,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 23:12:09,988 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-18 23:12:09,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326683802] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 23:12:09,989 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 23:12:09,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 23:12:09,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841119087] [2022-01-18 23:12:09,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 23:12:09,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 23:12:09,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:12:09,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 23:12:09,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-01-18 23:12:09,992 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 97 [2022-01-18 23:12:09,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 276 flow. Second operand has 18 states, 18 states have (on average 81.0) internal successors, (1458), 18 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:09,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:12:09,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 97 [2022-01-18 23:12:09,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:12:10,133 INFO L129 PetriNetUnfolder]: 2/152 cut-off events. [2022-01-18 23:12:10,134 INFO L130 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-01-18 23:12:10,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 152 events. 2/152 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 4/155 useless extension candidates. Maximal degree in co-relation 263. Up to 11 conditions per place. [2022-01-18 23:12:10,135 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 14 selfloop transitions, 21 changer transitions 0/112 dead transitions. [2022-01-18 23:12:10,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 112 transitions, 442 flow [2022-01-18 23:12:10,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 23:12:10,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-18 23:12:10,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1698 transitions. [2022-01-18 23:12:10,138 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.833578792341679 [2022-01-18 23:12:10,138 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1698 transitions. [2022-01-18 23:12:10,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1698 transitions. [2022-01-18 23:12:10,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:12:10,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1698 transitions. [2022-01-18 23:12:10,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 80.85714285714286) internal successors, (1698), 21 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:10,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 97.0) internal successors, (2134), 22 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:10,144 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 97.0) internal successors, (2134), 22 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:10,145 INFO L186 Difference]: Start difference. First operand has 106 places, 94 transitions, 276 flow. Second operand 21 states and 1698 transitions. [2022-01-18 23:12:10,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 112 transitions, 442 flow [2022-01-18 23:12:10,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 112 transitions, 428 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-01-18 23:12:10,148 INFO L242 Difference]: Finished difference. Result has 130 places, 107 transitions, 400 flow [2022-01-18 23:12:10,148 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=400, PETRI_PLACES=130, PETRI_TRANSITIONS=107} [2022-01-18 23:12:10,148 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 46 predicate places. [2022-01-18 23:12:10,148 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 107 transitions, 400 flow [2022-01-18 23:12:10,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.0) internal successors, (1458), 18 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:10,149 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:12:10,149 INFO L254 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:12:10,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 23:12:10,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 23:12:10,364 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 23:12:10,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:12:10,364 INFO L85 PathProgramCache]: Analyzing trace with hash -692690511, now seen corresponding path program 4 times [2022-01-18 23:12:10,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:12:10,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442210806] [2022-01-18 23:12:10,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:12:10,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:12:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:12:10,513 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-18 23:12:10,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:12:10,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442210806] [2022-01-18 23:12:10,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442210806] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 23:12:10,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817057959] [2022-01-18 23:12:10,514 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 23:12:10,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 23:12:10,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 23:12:10,515 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 23:12:10,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 23:12:10,646 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 23:12:10,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 23:12:10,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 23:12:10,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 23:12:10,900 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-18 23:12:10,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 23:12:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-18 23:12:11,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817057959] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 23:12:11,227 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 23:12:11,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-01-18 23:12:11,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621274269] [2022-01-18 23:12:11,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 23:12:11,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 23:12:11,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:12:11,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 23:12:11,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 23:12:11,230 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 97 [2022-01-18 23:12:11,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 107 transitions, 400 flow. Second operand has 34 states, 34 states have (on average 81.0) internal successors, (2754), 34 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:11,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:12:11,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 97 [2022-01-18 23:12:11,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:12:11,646 INFO L129 PetriNetUnfolder]: 2/216 cut-off events. [2022-01-18 23:12:11,647 INFO L130 PetriNetUnfolder]: For 267/267 co-relation queries the response was YES. [2022-01-18 23:12:11,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 216 events. 2/216 cut-off events. For 267/267 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 8/223 useless extension candidates. Maximal degree in co-relation 485. Up to 27 conditions per place. [2022-01-18 23:12:11,649 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 22 selfloop transitions, 45 changer transitions 0/144 dead transitions. [2022-01-18 23:12:11,649 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 144 transitions, 822 flow [2022-01-18 23:12:11,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 23:12:11,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-18 23:12:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3630 transitions. [2022-01-18 23:12:11,655 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8316151202749141 [2022-01-18 23:12:11,655 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 3630 transitions. [2022-01-18 23:12:11,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 3630 transitions. [2022-01-18 23:12:11,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:12:11,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 3630 transitions. [2022-01-18 23:12:11,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 80.66666666666667) internal successors, (3630), 45 states have internal predecessors, (3630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:11,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 97.0) internal successors, (4462), 46 states have internal predecessors, (4462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:11,668 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 97.0) internal successors, (4462), 46 states have internal predecessors, (4462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:11,668 INFO L186 Difference]: Start difference. First operand has 130 places, 107 transitions, 400 flow. Second operand 45 states and 3630 transitions. [2022-01-18 23:12:11,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 144 transitions, 822 flow [2022-01-18 23:12:11,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 144 transitions, 782 flow, removed 14 selfloop flow, removed 6 redundant places. [2022-01-18 23:12:11,672 INFO L242 Difference]: Finished difference. Result has 177 places, 132 transitions, 678 flow [2022-01-18 23:12:11,672 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=678, PETRI_PLACES=177, PETRI_TRANSITIONS=132} [2022-01-18 23:12:11,673 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 93 predicate places. [2022-01-18 23:12:11,673 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 132 transitions, 678 flow [2022-01-18 23:12:11,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 81.0) internal successors, (2754), 34 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:11,674 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:12:11,674 INFO L254 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:12:11,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 23:12:11,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 23:12:11,891 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 23:12:11,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:12:11,891 INFO L85 PathProgramCache]: Analyzing trace with hash 166775881, now seen corresponding path program 5 times [2022-01-18 23:12:11,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:12:11,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344287608] [2022-01-18 23:12:11,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:12:11,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:12:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:12:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 0 proven. 855 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-18 23:12:12,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:12:12,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344287608] [2022-01-18 23:12:12,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344287608] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 23:12:12,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533282228] [2022-01-18 23:12:12,248 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 23:12:12,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 23:12:12,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 23:12:12,264 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 23:12:12,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 23:12:12,390 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2022-01-18 23:12:12,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 23:12:12,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 23:12:12,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 23:12:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2022-01-18 23:12:12,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 23:12:12,975 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2022-01-18 23:12:12,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533282228] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 23:12:12,976 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 23:12:12,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 9, 9] total 47 [2022-01-18 23:12:12,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841142908] [2022-01-18 23:12:12,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 23:12:12,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 23:12:12,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:12:12,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 23:12:12,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=1803, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 23:12:12,980 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-01-18 23:12:12,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 132 transitions, 678 flow. Second operand has 47 states, 47 states have (on average 74.29787234042553) internal successors, (3492), 47 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:12,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:12:12,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-01-18 23:12:12,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:12:56,475 INFO L129 PetriNetUnfolder]: 2209/6985 cut-off events. [2022-01-18 23:12:56,475 INFO L130 PetriNetUnfolder]: For 20041/20041 co-relation queries the response was YES. [2022-01-18 23:12:56,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22861 conditions, 6985 events. 2209/6985 cut-off events. For 20041/20041 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 50444 event pairs, 20 based on Foata normal form. 308/7289 useless extension candidates. Maximal degree in co-relation 22836. Up to 928 conditions per place. [2022-01-18 23:12:56,526 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 961 selfloop transitions, 1927 changer transitions 0/2951 dead transitions. [2022-01-18 23:12:56,526 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1117 places, 2951 transitions, 26324 flow [2022-01-18 23:12:56,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 941 states. [2022-01-18 23:12:56,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 941 states. [2022-01-18 23:12:56,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 70848 transitions. [2022-01-18 23:12:56,586 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.776186772133177 [2022-01-18 23:12:56,586 INFO L72 ComplementDD]: Start complementDD. Operand 941 states and 70848 transitions. [2022-01-18 23:12:56,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 941 states and 70848 transitions. [2022-01-18 23:12:56,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:12:56,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 941 states and 70848 transitions. [2022-01-18 23:12:56,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 942 states, 941 states have (on average 75.29011689691818) internal successors, (70848), 941 states have internal predecessors, (70848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:57,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 942 states, 942 states have (on average 97.0) internal successors, (91374), 942 states have internal predecessors, (91374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:57,069 INFO L81 ComplementDD]: Finished complementDD. Result has 942 states, 942 states have (on average 97.0) internal successors, (91374), 942 states have internal predecessors, (91374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:57,069 INFO L186 Difference]: Start difference. First operand has 177 places, 132 transitions, 678 flow. Second operand 941 states and 70848 transitions. [2022-01-18 23:12:57,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1117 places, 2951 transitions, 26324 flow [2022-01-18 23:12:57,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1099 places, 2951 transitions, 25164 flow, removed 220 selfloop flow, removed 18 redundant places. [2022-01-18 23:12:57,140 INFO L242 Difference]: Finished difference. Result has 1379 places, 2119 transitions, 18814 flow [2022-01-18 23:12:57,141 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=941, PETRI_FLOW=18814, PETRI_PLACES=1379, PETRI_TRANSITIONS=2119} [2022-01-18 23:12:57,143 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 1295 predicate places. [2022-01-18 23:12:57,143 INFO L470 AbstractCegarLoop]: Abstraction has has 1379 places, 2119 transitions, 18814 flow [2022-01-18 23:12:57,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 74.29787234042553) internal successors, (3492), 47 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:57,144 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:12:57,145 INFO L254 CegarLoopForPetriNet]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:12:57,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-18 23:12:57,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 23:12:57,362 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 23:12:57,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:12:57,362 INFO L85 PathProgramCache]: Analyzing trace with hash -516955466, now seen corresponding path program 6 times [2022-01-18 23:12:57,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:12:57,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464901554] [2022-01-18 23:12:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:12:57,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:12:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:12:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 0 proven. 976 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-01-18 23:12:57,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:12:57,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464901554] [2022-01-18 23:12:57,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464901554] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 23:12:57,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272363882] [2022-01-18 23:12:57,782 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 23:12:57,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 23:12:57,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 23:12:57,783 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 23:12:57,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 23:12:58,006 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2022-01-18 23:12:58,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 23:12:58,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 23:12:58,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 23:12:58,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 31 proven. 238 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2022-01-18 23:12:58,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 23:12:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 31 proven. 238 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2022-01-18 23:12:59,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272363882] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 23:12:59,022 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 23:12:59,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17, 17] total 65 [2022-01-18 23:12:59,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958404857] [2022-01-18 23:12:59,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 23:12:59,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-18 23:12:59,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:12:59,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-18 23:12:59,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=594, Invalid=3566, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 23:12:59,026 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-01-18 23:12:59,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1379 places, 2119 transitions, 18814 flow. Second operand has 65 states, 65 states have (on average 74.23076923076923) internal successors, (4825), 65 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:12:59,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:12:59,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-01-18 23:12:59,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:16:44,880 INFO L129 PetriNetUnfolder]: 4673/15415 cut-off events. [2022-01-18 23:16:44,880 INFO L130 PetriNetUnfolder]: For 12501653/12501752 co-relation queries the response was YES. [2022-01-18 23:16:45,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93802 conditions, 15415 events. 4673/15415 cut-off events. For 12501653/12501752 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 127388 event pairs, 20 based on Foata normal form. 734/16143 useless extension candidates. Maximal degree in co-relation 93497. Up to 1984 conditions per place. [2022-01-18 23:16:45,309 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 1974 selfloop transitions, 4834 changer transitions 0/6871 dead transitions. [2022-01-18 23:16:45,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3579 places, 6871 transitions, 125300 flow [2022-01-18 23:16:45,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2201 states. [2022-01-18 23:16:45,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2201 states. [2022-01-18 23:16:45,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 165332 transitions. [2022-01-18 23:16:45,392 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7743996402759757 [2022-01-18 23:16:45,392 INFO L72 ComplementDD]: Start complementDD. Operand 2201 states and 165332 transitions. [2022-01-18 23:16:45,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2201 states and 165332 transitions. [2022-01-18 23:16:45,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:16:45,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2201 states and 165332 transitions. [2022-01-18 23:16:45,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 2202 states, 2201 states have (on average 75.11676510676965) internal successors, (165332), 2201 states have internal predecessors, (165332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:16:46,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 2202 states, 2202 states have (on average 97.0) internal successors, (213594), 2202 states have internal predecessors, (213594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:16:46,031 INFO L81 ComplementDD]: Finished complementDD. Result has 2202 states, 2202 states have (on average 97.0) internal successors, (213594), 2202 states have internal predecessors, (213594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:16:46,032 INFO L186 Difference]: Start difference. First operand has 1379 places, 2119 transitions, 18814 flow. Second operand 2201 states and 165332 transitions. [2022-01-18 23:16:46,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3579 places, 6871 transitions, 125300 flow [2022-01-18 23:16:55,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3531 places, 6871 transitions, 118724 flow, removed 804 selfloop flow, removed 48 redundant places. [2022-01-18 23:16:55,460 INFO L242 Difference]: Finished difference. Result has 4086 places, 5079 transitions, 58746 flow [2022-01-18 23:16:55,464 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=15926, PETRI_DIFFERENCE_MINUEND_PLACES=1331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1974, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2201, PETRI_FLOW=58746, PETRI_PLACES=4086, PETRI_TRANSITIONS=5079} [2022-01-18 23:16:55,464 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 4002 predicate places. [2022-01-18 23:16:55,464 INFO L470 AbstractCegarLoop]: Abstraction has has 4086 places, 5079 transitions, 58746 flow [2022-01-18 23:16:55,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 74.23076923076923) internal successors, (4825), 65 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:16:55,465 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:16:55,465 INFO L254 CegarLoopForPetriNet]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:16:55,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-18 23:16:55,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 23:16:55,666 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 23:16:55,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:16:55,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1027475895, now seen corresponding path program 7 times [2022-01-18 23:16:55,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:16:55,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112500958] [2022-01-18 23:16:55,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:16:55,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:16:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:16:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2275 backedges. 29 proven. 1105 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2022-01-18 23:16:56,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:16:56,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112500958] [2022-01-18 23:16:56,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112500958] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 23:16:56,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010332934] [2022-01-18 23:16:56,100 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 23:16:56,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 23:16:56,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 23:16:56,101 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 23:16:56,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 23:16:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:16:56,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-18 23:16:56,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 23:16:56,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2275 backedges. 29 proven. 1105 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2022-01-18 23:16:56,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 23:16:57,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2275 backedges. 29 proven. 1105 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2022-01-18 23:16:57,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010332934] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 23:16:57,263 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 23:16:57,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 43 [2022-01-18 23:16:57,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991332349] [2022-01-18 23:16:57,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 23:16:57,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 23:16:57,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:16:57,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 23:16:57,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 23:16:57,265 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 97 [2022-01-18 23:16:57,267 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 4086 places, 5079 transitions, 58746 flow. Second operand has 43 states, 43 states have (on average 81.04651162790698) internal successors, (3485), 43 states have internal predecessors, (3485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:16:57,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:16:57,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 97 [2022-01-18 23:16:57,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:17:11,828 INFO L129 PetriNetUnfolder]: 3043/12055 cut-off events. [2022-01-18 23:17:11,828 INFO L130 PetriNetUnfolder]: For 5861795/5863713 co-relation queries the response was YES. [2022-01-18 23:17:12,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82367 conditions, 12055 events. 3043/12055 cut-off events. For 5861795/5863713 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 101603 event pairs, 154 based on Foata normal form. 297/12284 useless extension candidates. Maximal degree in co-relation 81507. Up to 1369 conditions per place. [2022-01-18 23:17:12,508 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 27 selfloop transitions, 2651 changer transitions 0/5142 dead transitions. [2022-01-18 23:17:12,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 4145 places, 5142 transitions, 65940 flow [2022-01-18 23:17:12,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 23:17:12,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-01-18 23:17:12,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4830 transitions. [2022-01-18 23:17:12,511 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8298969072164949 [2022-01-18 23:17:12,511 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 4830 transitions. [2022-01-18 23:17:12,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 4830 transitions. [2022-01-18 23:17:12,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:17:12,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 4830 transitions. [2022-01-18 23:17:12,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 80.5) internal successors, (4830), 60 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:17:12,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 97.0) internal successors, (5917), 61 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:17:12,518 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 97.0) internal successors, (5917), 61 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:17:12,518 INFO L186 Difference]: Start difference. First operand has 4086 places, 5079 transitions, 58746 flow. Second operand 60 states and 4830 transitions. [2022-01-18 23:17:12,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 4145 places, 5142 transitions, 65940 flow [2022-01-18 23:18:11,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3317 places, 5142 transitions, 57964 flow, removed 2314 selfloop flow, removed 828 redundant places. [2022-01-18 23:18:11,640 INFO L242 Difference]: Finished difference. Result has 3321 places, 5126 transitions, 57849 flow [2022-01-18 23:18:11,647 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=50770, PETRI_DIFFERENCE_MINUEND_PLACES=3258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5079, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2606, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=57849, PETRI_PLACES=3321, PETRI_TRANSITIONS=5126} [2022-01-18 23:18:11,648 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 3237 predicate places. [2022-01-18 23:18:11,648 INFO L470 AbstractCegarLoop]: Abstraction has has 3321 places, 5126 transitions, 57849 flow [2022-01-18 23:18:11,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 81.04651162790698) internal successors, (3485), 43 states have internal predecessors, (3485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:18:11,649 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:18:11,649 INFO L254 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:18:11,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 23:18:11,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-18 23:18:11,868 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 23:18:11,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:18:11,868 INFO L85 PathProgramCache]: Analyzing trace with hash 712703486, now seen corresponding path program 8 times [2022-01-18 23:18:11,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:18:11,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939959502] [2022-01-18 23:18:11,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:18:11,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:18:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:18:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2710 backedges. 438 proven. 1170 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2022-01-18 23:18:12,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:18:12,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939959502] [2022-01-18 23:18:12,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939959502] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 23:18:12,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163300292] [2022-01-18 23:18:12,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 23:18:12,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 23:18:12,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 23:18:12,224 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 23:18:12,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 23:18:12,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 23:18:12,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 23:18:12,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 23:18:12,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 23:18:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2710 backedges. 438 proven. 1170 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2022-01-18 23:18:12,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 23:18:13,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2710 backedges. 438 proven. 1170 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2022-01-18 23:18:13,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163300292] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 23:18:13,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 23:18:13,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 43 [2022-01-18 23:18:13,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569039248] [2022-01-18 23:18:13,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 23:18:13,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 23:18:13,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:18:13,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 23:18:13,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 23:18:13,290 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 97 [2022-01-18 23:18:13,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3321 places, 5126 transitions, 57849 flow. Second operand has 43 states, 43 states have (on average 82.02325581395348) internal successors, (3527), 43 states have internal predecessors, (3527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:18:13,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:18:13,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 97 [2022-01-18 23:18:13,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:18:35,861 INFO L129 PetriNetUnfolder]: 4128/17234 cut-off events. [2022-01-18 23:18:35,861 INFO L130 PetriNetUnfolder]: For 20559052/20563383 co-relation queries the response was YES. [2022-01-18 23:18:38,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103252 conditions, 17234 events. 4128/17234 cut-off events. For 20559052/20563383 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 154015 event pairs, 164 based on Foata normal form. 151/17308 useless extension candidates. Maximal degree in co-relation 102388. Up to 1939 conditions per place. [2022-01-18 23:18:38,283 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 737 selfloop transitions, 3000 changer transitions 0/6460 dead transitions. [2022-01-18 23:18:38,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3380 places, 6460 transitions, 79631 flow [2022-01-18 23:18:38,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 23:18:38,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-01-18 23:18:38,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4891 transitions. [2022-01-18 23:18:38,286 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8403780068728522 [2022-01-18 23:18:38,286 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 4891 transitions. [2022-01-18 23:18:38,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 4891 transitions. [2022-01-18 23:18:38,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 23:18:38,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 4891 transitions. [2022-01-18 23:18:38,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 81.51666666666667) internal successors, (4891), 60 states have internal predecessors, (4891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:18:38,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 97.0) internal successors, (5917), 61 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:18:38,293 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 97.0) internal successors, (5917), 61 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:18:38,293 INFO L186 Difference]: Start difference. First operand has 3321 places, 5126 transitions, 57849 flow. Second operand 60 states and 4891 transitions. [2022-01-18 23:18:38,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3380 places, 6460 transitions, 79631 flow [2022-01-18 23:19:44,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3232 places, 6460 transitions, 73237 flow, removed 513 selfloop flow, removed 148 redundant places. [2022-01-18 23:19:44,743 INFO L242 Difference]: Finished difference. Result has 3238 places, 5926 transitions, 65675 flow [2022-01-18 23:19:44,748 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=51455, PETRI_DIFFERENCE_MINUEND_PLACES=3173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2776, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=65675, PETRI_PLACES=3238, PETRI_TRANSITIONS=5926} [2022-01-18 23:19:44,749 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 3154 predicate places. [2022-01-18 23:19:44,749 INFO L470 AbstractCegarLoop]: Abstraction has has 3238 places, 5926 transitions, 65675 flow [2022-01-18 23:19:44,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 82.02325581395348) internal successors, (3527), 43 states have internal predecessors, (3527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:19:44,749 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 23:19:44,750 INFO L254 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 23:19:44,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 23:19:44,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 23:19:44,950 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 23:19:44,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 23:19:44,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1248089284, now seen corresponding path program 9 times [2022-01-18 23:19:44,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 23:19:44,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309239886] [2022-01-18 23:19:44,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 23:19:44,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 23:19:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 23:19:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:19:46,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 23:19:46,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309239886] [2022-01-18 23:19:46,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309239886] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 23:19:46,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788934134] [2022-01-18 23:19:46,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 23:19:46,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 23:19:46,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 23:19:46,682 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 23:19:46,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 23:19:47,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2022-01-18 23:19:47,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 23:19:47,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 165 conjunts are in the unsatisfiable core [2022-01-18 23:19:47,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 23:19:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:19:48,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 23:19:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 23:19:50,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788934134] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 23:19:50,172 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 23:19:50,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 69 [2022-01-18 23:19:50,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874478617] [2022-01-18 23:19:50,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 23:19:50,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-01-18 23:19:50,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 23:19:50,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-01-18 23:19:50,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4555, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 23:19:50,176 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 97 [2022-01-18 23:19:50,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3238 places, 5926 transitions, 65675 flow. Second operand has 69 states, 69 states have (on average 76.34782608695652) internal successors, (5268), 69 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 23:19:50,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 23:19:50,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 97 [2022-01-18 23:19:50,178 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 23:20:06,521 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([182] L1350-->L1351: Formula: (= v_~myglobal~0_3 (+ v_~myglobal~0_4 1)) InVars {~myglobal~0=v_~myglobal~0_4} OutVars{~myglobal~0=v_~myglobal~0_3} AuxVars[] AssignedVars[~myglobal~0][2917], [Black: 1404#(<= |ULTIMATE.start_main_~i~1#1| 3), Black: 1939#(< |ULTIMATE.start_main_~i~1#1| 18), Black: 1913#(< |ULTIMATE.start_main_~i~1#1| 19), Black: 1396#true, Black: 102#(= |ULTIMATE.start_main_~i~1#1| 0), 3667#(<= thread_function_mutexThread1of1ForFork0_~i~0 1), Black: 272#(<= thread_function_mutexThread1of1ForFork0_~i~0 0), Black: 19785#(< thread_function_mutexThread1of1ForFork0_~i~0 17), Black: 18438#(<= thread_function_mutexThread1of1ForFork0_~i~0 15), Black: 18406#true, Black: 19750#(< thread_function_mutexThread1of1ForFork0_~i~0 18), Black: 19704#(< thread_function_mutexThread1of1ForFork0_~i~0 20), Black: 19715#(< thread_function_mutexThread1of1ForFork0_~i~0 19), 8020#(<= thread_function_mutexThread1of1ForFork0_~i~0 1), 1902#(< |ULTIMATE.start_main_~i~1#1| 20), 1126#(< |ULTIMATE.start_main_~i~1#1| 20), Black: 308#true, Black: 621#(< thread_function_mutexThread1of1ForFork0_~i~0 20), 97#true, 18410#(<= thread_function_mutexThread1of1ForFork0_~i~0 1), 23530#(and (<= thread_function_mutexThread1of1ForFork0_~j~0 20) (<= 21 ~myglobal~0) (<= ~myglobal~0 21) (<= 20 thread_function_mutexThread1of1ForFork0_~j~0)), Black: 7124#(and (< thread_function_mutexThread1of1ForFork0_~i~0 19) (< |thread_function_mutexThread1of1ForFork0_#t~post31| 19) (<= |ULTIMATE.start_main_~i~1#1| 15)), Black: 5931#(and (< thread_function_mutexThread1of1ForFork0_~i~0 19) (<= |ULTIMATE.start_main_#t~post40#1| 5) (<= |ULTIMATE.start_main_~i~1#1| 6)), Black: 6743#(and (<= |ULTIMATE.start_main_~i~1#1| 11) (< thread_function_mutexThread1of1ForFork0_~i~0 19) (<= |ULTIMATE.start_main_#t~post40#1| 10)), Black: 4643#(and (<= 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