/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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 02:24:50,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 02:24:50,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 02:24:50,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 02:24:50,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 02:24:50,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 02:24:50,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 02:24:50,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 02:24:50,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 02:24:50,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 02:24:50,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 02:24:50,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 02:24:50,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 02:24:50,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 02:24:50,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 02:24:50,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 02:24:50,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 02:24:50,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 02:24:50,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 02:24:50,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 02:24:50,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 02:24:50,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 02:24:50,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 02:24:50,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 02:24:50,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 02:24:50,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 02:24:50,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 02:24:50,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 02:24:50,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 02:24:50,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 02:24:50,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 02:24:50,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 02:24:50,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 02:24:50,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 02:24:50,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 02:24:50,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 02:24:50,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 02:24:50,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 02:24:50,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 02:24:50,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 02:24:50,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 02:24:50,972 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-VariableLbe.epf [2023-01-28 02:24:50,984 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 02:24:50,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 02:24:50,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 02:24:50,985 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 02:24:50,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 02:24:50,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 02:24:50,986 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 02:24:50,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 02:24:50,986 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 02:24:50,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 02:24:50,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 02:24:50,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 02:24:50,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 02:24:50,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 02:24:50,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 02:24:50,986 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 02:24:50,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 02:24:50,986 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 02:24:50,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 02:24:50,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 02:24:50,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 02:24:50,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 02:24:50,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 02:24:50,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:24:50,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 02:24:50,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 02:24:50,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 02:24:50,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 02:24:50,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 02:24:50,987 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 02:24:50,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 02:24:50,988 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 02:24:51,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 02:24:51,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 02:24:51,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 02:24:51,178 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 02:24:51,179 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 02:24:51,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c [2023-01-28 02:24:52,098 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 02:24:52,291 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 02:24:52,292 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c [2023-01-28 02:24:52,295 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/982783a93/2aeda30d90f44a2f85b11347de517e13/FLAG82009325a [2023-01-28 02:24:52,312 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/982783a93/2aeda30d90f44a2f85b11347de517e13 [2023-01-28 02:24:52,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 02:24:52,315 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 02:24:52,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 02:24:52,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 02:24:52,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 02:24:52,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:24:52" (1/1) ... [2023-01-28 02:24:52,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@459dba3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:24:52, skipping insertion in model container [2023-01-28 02:24:52,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:24:52" (1/1) ... [2023-01-28 02:24:52,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 02:24:52,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 02:24:52,460 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c[2826,2839] [2023-01-28 02:24:52,463 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:24:52,469 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 02:24:52,484 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c[2826,2839] [2023-01-28 02:24:52,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:24:52,494 INFO L208 MainTranslator]: Completed translation [2023-01-28 02:24:52,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:24:52 WrapperNode [2023-01-28 02:24:52,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 02:24:52,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 02:24:52,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 02:24:52,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 02:24:52,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:24:52" (1/1) ... [2023-01-28 02:24:52,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:24:52" (1/1) ... [2023-01-28 02:24:52,528 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 132 [2023-01-28 02:24:52,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 02:24:52,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 02:24:52,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 02:24:52,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 02:24:52,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:24:52" (1/1) ... [2023-01-28 02:24:52,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:24:52" (1/1) ... [2023-01-28 02:24:52,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:24:52" (1/1) ... [2023-01-28 02:24:52,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:24:52" (1/1) ... [2023-01-28 02:24:52,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:24:52" (1/1) ... [2023-01-28 02:24:52,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:24:52" (1/1) ... [2023-01-28 02:24:52,551 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:24:52" (1/1) ... [2023-01-28 02:24:52,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:24:52" (1/1) ... [2023-01-28 02:24:52,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 02:24:52,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 02:24:52,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 02:24:52,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 02:24:52,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:24:52" (1/1) ... [2023-01-28 02:24:52,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:24:52,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:24:52,574 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) [2023-01-28 02:24:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 02:24:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 02:24:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 02:24:52,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 02:24:52,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 02:24:52,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 02:24:52,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 02:24:52,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 02:24:52,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 02:24:52,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 02:24:52,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 02:24:52,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 02:24:52,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 02:24:52,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-01-28 02:24:52,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-01-28 02:24:52,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-01-28 02:24:52,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-01-28 02:24:52,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 02:24:52,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 02:24:52,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 02:24:52,605 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 02:24:52,586 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 [2023-01-28 02:24:52,710 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 02:24:52,711 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 02:24:52,927 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 02:24:52,937 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 02:24:52,937 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-28 02:24:52,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:24:52 BoogieIcfgContainer [2023-01-28 02:24:52,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 02:24:52,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 02:24:52,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 02:24:52,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 02:24:52,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 02:24:52" (1/3) ... [2023-01-28 02:24:52,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c83c7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:24:52, skipping insertion in model container [2023-01-28 02:24:52,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:24:52" (2/3) ... [2023-01-28 02:24:52,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c83c7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:24:52, skipping insertion in model container [2023-01-28 02:24:52,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:24:52" (3/3) ... [2023-01-28 02:24:52,946 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2023-01-28 02:24:52,961 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 02:24:52,961 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 02:24:52,961 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 02:24:53,040 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-01-28 02:24:53,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 169 transitions, 386 flow [2023-01-28 02:24:53,121 INFO L130 PetriNetUnfolder]: 14/163 cut-off events. [2023-01-28 02:24:53,121 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 02:24:53,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 163 events. 14/163 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-01-28 02:24:53,132 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 169 transitions, 386 flow [2023-01-28 02:24:53,140 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 147 transitions, 330 flow [2023-01-28 02:24:53,144 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:24:53,157 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 147 transitions, 330 flow [2023-01-28 02:24:53,159 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 147 transitions, 330 flow [2023-01-28 02:24:53,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 147 transitions, 330 flow [2023-01-28 02:24:53,199 INFO L130 PetriNetUnfolder]: 14/147 cut-off events. [2023-01-28 02:24:53,199 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 02:24:53,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 147 events. 14/147 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-01-28 02:24:53,202 INFO L119 LiptonReduction]: Number of co-enabled transitions 2916 [2023-01-28 02:24:58,195 INFO L134 LiptonReduction]: Checked pairs total: 3543 [2023-01-28 02:24:58,195 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-01-28 02:24:58,205 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 02:24:58,209 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@45a49503, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:24:58,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-01-28 02:24:58,214 INFO L130 PetriNetUnfolder]: 6/36 cut-off events. [2023-01-28 02:24:58,215 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 02:24:58,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:24:58,215 INFO L208 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] [2023-01-28 02:24:58,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:24:58,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:24:58,219 INFO L85 PathProgramCache]: Analyzing trace with hash 859190718, now seen corresponding path program 1 times [2023-01-28 02:24:58,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:24:58,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741794193] [2023-01-28 02:24:58,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:24:58,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:24:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:24:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:24:58,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:24:58,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741794193] [2023-01-28 02:24:58,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741794193] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:24:58,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:24:58,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 02:24:58,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986026606] [2023-01-28 02:24:58,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:24:58,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:24:58,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:24:58,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:24:58,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:24:58,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 293 [2023-01-28 02:24:58,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:24:58,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:24:58,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 293 [2023-01-28 02:24:58,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:24:59,147 INFO L130 PetriNetUnfolder]: 3277/3973 cut-off events. [2023-01-28 02:24:59,148 INFO L131 PetriNetUnfolder]: For 313/313 co-relation queries the response was YES. [2023-01-28 02:24:59,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8270 conditions, 3973 events. 3277/3973 cut-off events. For 313/313 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10583 event pairs, 837 based on Foata normal form. 1/2272 useless extension candidates. Maximal degree in co-relation 5564. Up to 2141 conditions per place. [2023-01-28 02:24:59,169 INFO L137 encePairwiseOnDemand]: 289/293 looper letters, 59 selfloop transitions, 3 changer transitions 1/63 dead transitions. [2023-01-28 02:24:59,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 63 transitions, 309 flow [2023-01-28 02:24:59,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:24:59,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:24:59,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2023-01-28 02:24:59,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5369738339021616 [2023-01-28 02:24:59,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2023-01-28 02:24:59,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2023-01-28 02:24:59,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:24:59,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2023-01-28 02:24:59,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:24:59,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:24:59,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:24:59,199 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 110 flow. Second operand 3 states and 472 transitions. [2023-01-28 02:24:59,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 63 transitions, 309 flow [2023-01-28 02:24:59,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 63 transitions, 271 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-01-28 02:24:59,208 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 105 flow [2023-01-28 02:24:59,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-01-28 02:24:59,212 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -9 predicate places. [2023-01-28 02:24:59,213 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 105 flow [2023-01-28 02:24:59,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:24:59,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:24:59,213 INFO L208 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] [2023-01-28 02:24:59,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 02:24:59,214 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:24:59,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:24:59,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1079964367, now seen corresponding path program 1 times [2023-01-28 02:24:59,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:24:59,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107133441] [2023-01-28 02:24:59,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:24:59,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:24:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:24:59,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:24:59,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:24:59,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107133441] [2023-01-28 02:24:59,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107133441] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:24:59,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:24:59,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:24:59,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821971937] [2023-01-28 02:24:59,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:24:59,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:24:59,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:24:59,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:24:59,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:24:59,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 02:24:59,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:24:59,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:24:59,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 02:24:59,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:24:59,900 INFO L130 PetriNetUnfolder]: 4887/5960 cut-off events. [2023-01-28 02:24:59,900 INFO L131 PetriNetUnfolder]: For 789/789 co-relation queries the response was YES. [2023-01-28 02:24:59,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13241 conditions, 5960 events. 4887/5960 cut-off events. For 789/789 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17742 event pairs, 529 based on Foata normal form. 126/4330 useless extension candidates. Maximal degree in co-relation 7451. Up to 4746 conditions per place. [2023-01-28 02:24:59,921 INFO L137 encePairwiseOnDemand]: 284/293 looper letters, 74 selfloop transitions, 13 changer transitions 7/94 dead transitions. [2023-01-28 02:24:59,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 94 transitions, 425 flow [2023-01-28 02:24:59,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:24:59,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:24:59,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 550 transitions. [2023-01-28 02:24:59,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46928327645051193 [2023-01-28 02:24:59,924 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 550 transitions. [2023-01-28 02:24:59,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 550 transitions. [2023-01-28 02:24:59,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:24:59,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 550 transitions. [2023-01-28 02:24:59,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:24:59,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:24:59,928 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:24:59,928 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 105 flow. Second operand 4 states and 550 transitions. [2023-01-28 02:24:59,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 94 transitions, 425 flow [2023-01-28 02:24:59,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 94 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 02:24:59,945 INFO L231 Difference]: Finished difference. Result has 45 places, 51 transitions, 191 flow [2023-01-28 02:24:59,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=45, PETRI_TRANSITIONS=51} [2023-01-28 02:24:59,946 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-01-28 02:24:59,946 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 51 transitions, 191 flow [2023-01-28 02:24:59,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:24:59,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:24:59,946 INFO L208 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] [2023-01-28 02:24:59,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 02:24:59,947 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:24:59,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:24:59,948 INFO L85 PathProgramCache]: Analyzing trace with hash 978865401, now seen corresponding path program 1 times [2023-01-28 02:24:59,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:24:59,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31846720] [2023-01-28 02:24:59,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:24:59,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:25:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:00,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:25:00,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:25:00,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31846720] [2023-01-28 02:25:00,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31846720] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:25:00,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133460207] [2023-01-28 02:25:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:00,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:00,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:25:00,148 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) [2023-01-28 02:25:00,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 02:25:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:00,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 02:25:00,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:25:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:25:00,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:25:00,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133460207] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:25:00,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:25:00,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-01-28 02:25:00,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704834864] [2023-01-28 02:25:00,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:25:00,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:25:00,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:25:00,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:25:00,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:25:00,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 293 [2023-01-28 02:25:00,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 51 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:00,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:25:00,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 293 [2023-01-28 02:25:00,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:25:00,913 INFO L130 PetriNetUnfolder]: 6427/7817 cut-off events. [2023-01-28 02:25:00,913 INFO L131 PetriNetUnfolder]: For 5153/5153 co-relation queries the response was YES. [2023-01-28 02:25:00,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21888 conditions, 7817 events. 6427/7817 cut-off events. For 5153/5153 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 23405 event pairs, 2167 based on Foata normal form. 1/7818 useless extension candidates. Maximal degree in co-relation 12123. Up to 5110 conditions per place. [2023-01-28 02:25:00,941 INFO L137 encePairwiseOnDemand]: 287/293 looper letters, 67 selfloop transitions, 13 changer transitions 5/85 dead transitions. [2023-01-28 02:25:00,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 85 transitions, 456 flow [2023-01-28 02:25:00,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:25:00,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:25:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-01-28 02:25:00,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119453924914675 [2023-01-28 02:25:00,942 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-01-28 02:25:00,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-01-28 02:25:00,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:25:00,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-01-28 02:25:00,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:00,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:00,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:00,945 INFO L175 Difference]: Start difference. First operand has 45 places, 51 transitions, 191 flow. Second operand 3 states and 450 transitions. [2023-01-28 02:25:00,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 85 transitions, 456 flow [2023-01-28 02:25:00,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 85 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 02:25:00,948 INFO L231 Difference]: Finished difference. Result has 48 places, 55 transitions, 256 flow [2023-01-28 02:25:00,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=48, PETRI_TRANSITIONS=55} [2023-01-28 02:25:00,949 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2023-01-28 02:25:00,949 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 55 transitions, 256 flow [2023-01-28 02:25:00,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:00,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:25:00,949 INFO L208 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] [2023-01-28 02:25:00,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 02:25:01,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:01,157 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:25:01,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:25:01,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1588966705, now seen corresponding path program 1 times [2023-01-28 02:25:01,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:25:01,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43696329] [2023-01-28 02:25:01,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:01,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:25:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:25:01,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:25:01,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43696329] [2023-01-28 02:25:01,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43696329] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:25:01,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:25:01,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:25:01,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066970207] [2023-01-28 02:25:01,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:25:01,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:25:01,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:25:01,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:25:01,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:25:01,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 02:25:01,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 55 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:01,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:25:01,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 02:25:01,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:25:01,832 INFO L130 PetriNetUnfolder]: 6271/7661 cut-off events. [2023-01-28 02:25:01,832 INFO L131 PetriNetUnfolder]: For 9563/9563 co-relation queries the response was YES. [2023-01-28 02:25:01,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24370 conditions, 7661 events. 6271/7661 cut-off events. For 9563/9563 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 23885 event pairs, 1083 based on Foata normal form. 156/7817 useless extension candidates. Maximal degree in co-relation 13894. Up to 6447 conditions per place. [2023-01-28 02:25:01,859 INFO L137 encePairwiseOnDemand]: 284/293 looper letters, 80 selfloop transitions, 19 changer transitions 9/108 dead transitions. [2023-01-28 02:25:01,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 108 transitions, 644 flow [2023-01-28 02:25:01,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:25:01,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:25:01,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 550 transitions. [2023-01-28 02:25:01,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46928327645051193 [2023-01-28 02:25:01,861 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 550 transitions. [2023-01-28 02:25:01,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 550 transitions. [2023-01-28 02:25:01,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:25:01,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 550 transitions. [2023-01-28 02:25:01,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:01,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:01,864 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:01,864 INFO L175 Difference]: Start difference. First operand has 48 places, 55 transitions, 256 flow. Second operand 4 states and 550 transitions. [2023-01-28 02:25:01,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 108 transitions, 644 flow [2023-01-28 02:25:01,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 108 transitions, 619 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-28 02:25:01,877 INFO L231 Difference]: Finished difference. Result has 51 places, 63 transitions, 336 flow [2023-01-28 02:25:01,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=51, PETRI_TRANSITIONS=63} [2023-01-28 02:25:01,877 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-01-28 02:25:01,877 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 63 transitions, 336 flow [2023-01-28 02:25:01,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:01,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:25:01,878 INFO L208 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] [2023-01-28 02:25:01,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 02:25:01,878 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:25:01,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:25:01,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1722538193, now seen corresponding path program 2 times [2023-01-28 02:25:01,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:25:01,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666691721] [2023-01-28 02:25:01,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:01,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:25:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:25:02,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:25:02,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666691721] [2023-01-28 02:25:02,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666691721] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:25:02,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817891084] [2023-01-28 02:25:02,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:25:02,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:02,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:25:02,064 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) [2023-01-28 02:25:02,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 02:25:02,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 02:25:02,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:25:02,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 02:25:02,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:25:02,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:02,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:25:02,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817891084] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:25:02,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:25:02,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-01-28 02:25:02,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616385991] [2023-01-28 02:25:02,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:25:02,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:25:02,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:25:02,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:25:02,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:25:02,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 293 [2023-01-28 02:25:02,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 63 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:02,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:25:02,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 293 [2023-01-28 02:25:02,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:25:02,778 INFO L130 PetriNetUnfolder]: 9527/11599 cut-off events. [2023-01-28 02:25:02,778 INFO L131 PetriNetUnfolder]: For 12551/12551 co-relation queries the response was YES. [2023-01-28 02:25:02,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35496 conditions, 11599 events. 9527/11599 cut-off events. For 12551/12551 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 37435 event pairs, 3399 based on Foata normal form. 1/11600 useless extension candidates. Maximal degree in co-relation 21625. Up to 6396 conditions per place. [2023-01-28 02:25:02,809 INFO L137 encePairwiseOnDemand]: 289/293 looper letters, 77 selfloop transitions, 13 changer transitions 5/95 dead transitions. [2023-01-28 02:25:02,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 95 transitions, 631 flow [2023-01-28 02:25:02,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:25:02,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:25:02,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 476 transitions. [2023-01-28 02:25:02,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5415244596131968 [2023-01-28 02:25:02,811 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 476 transitions. [2023-01-28 02:25:02,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 476 transitions. [2023-01-28 02:25:02,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:25:02,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 476 transitions. [2023-01-28 02:25:02,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:02,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:02,813 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:02,813 INFO L175 Difference]: Start difference. First operand has 51 places, 63 transitions, 336 flow. Second operand 3 states and 476 transitions. [2023-01-28 02:25:02,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 95 transitions, 631 flow [2023-01-28 02:25:02,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 95 transitions, 614 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 02:25:02,828 INFO L231 Difference]: Finished difference. Result has 53 places, 65 transitions, 372 flow [2023-01-28 02:25:02,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=372, PETRI_PLACES=53, PETRI_TRANSITIONS=65} [2023-01-28 02:25:02,830 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-01-28 02:25:02,832 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 65 transitions, 372 flow [2023-01-28 02:25:02,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:02,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:25:02,833 INFO L208 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] [2023-01-28 02:25:02,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 02:25:03,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:03,038 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:25:03,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:25:03,039 INFO L85 PathProgramCache]: Analyzing trace with hash 810242775, now seen corresponding path program 1 times [2023-01-28 02:25:03,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:25:03,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287965804] [2023-01-28 02:25:03,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:03,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:25:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:03,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:25:03,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:25:03,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287965804] [2023-01-28 02:25:03,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287965804] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:25:03,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:25:03,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:25:03,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428571860] [2023-01-28 02:25:03,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:25:03,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:25:03,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:25:03,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:25:03,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:25:03,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 02:25:03,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 65 transitions, 372 flow. Second operand has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:03,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:25:03,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 02:25:03,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:25:03,808 INFO L130 PetriNetUnfolder]: 9359/11431 cut-off events. [2023-01-28 02:25:03,809 INFO L131 PetriNetUnfolder]: For 17363/17363 co-relation queries the response was YES. [2023-01-28 02:25:03,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36837 conditions, 11431 events. 9359/11431 cut-off events. For 17363/17363 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 38572 event pairs, 1953 based on Foata normal form. 168/11599 useless extension candidates. Maximal degree in co-relation 24955. Up to 10217 conditions per place. [2023-01-28 02:25:03,839 INFO L137 encePairwiseOnDemand]: 284/293 looper letters, 84 selfloop transitions, 27 changer transitions 11/122 dead transitions. [2023-01-28 02:25:03,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 122 transitions, 830 flow [2023-01-28 02:25:03,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:25:03,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:25:03,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 550 transitions. [2023-01-28 02:25:03,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46928327645051193 [2023-01-28 02:25:03,843 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 550 transitions. [2023-01-28 02:25:03,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 550 transitions. [2023-01-28 02:25:03,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:25:03,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 550 transitions. [2023-01-28 02:25:03,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:03,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:03,847 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:03,847 INFO L175 Difference]: Start difference. First operand has 53 places, 65 transitions, 372 flow. Second operand 4 states and 550 transitions. [2023-01-28 02:25:03,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 122 transitions, 830 flow [2023-01-28 02:25:03,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 122 transitions, 817 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 02:25:03,864 INFO L231 Difference]: Finished difference. Result has 56 places, 75 transitions, 510 flow [2023-01-28 02:25:03,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=510, PETRI_PLACES=56, PETRI_TRANSITIONS=75} [2023-01-28 02:25:03,866 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 6 predicate places. [2023-01-28 02:25:03,866 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 75 transitions, 510 flow [2023-01-28 02:25:03,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:03,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:25:03,866 INFO L208 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] [2023-01-28 02:25:03,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 02:25:03,867 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:25:03,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:25:03,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1503143731, now seen corresponding path program 2 times [2023-01-28 02:25:03,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:25:03,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139755225] [2023-01-28 02:25:03,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:03,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:25:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:25:04,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:25:04,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139755225] [2023-01-28 02:25:04,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139755225] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:25:04,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159038878] [2023-01-28 02:25:04,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:25:04,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:04,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:25:04,003 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) [2023-01-28 02:25:04,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 02:25:04,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 02:25:04,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:25:04,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 02:25:04,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:25:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:04,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:25:04,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159038878] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:25:04,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:25:04,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-01-28 02:25:04,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340942795] [2023-01-28 02:25:04,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:25:04,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:25:04,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:25:04,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:25:04,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:25:04,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 293 [2023-01-28 02:25:04,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 75 transitions, 510 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:04,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:25:04,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 293 [2023-01-28 02:25:04,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:25:04,809 INFO L130 PetriNetUnfolder]: 12615/15369 cut-off events. [2023-01-28 02:25:04,810 INFO L131 PetriNetUnfolder]: For 25373/25373 co-relation queries the response was YES. [2023-01-28 02:25:04,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51043 conditions, 15369 events. 12615/15369 cut-off events. For 25373/25373 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 51496 event pairs, 5545 based on Foata normal form. 1/15370 useless extension candidates. Maximal degree in co-relation 28427. Up to 8756 conditions per place. [2023-01-28 02:25:04,863 INFO L137 encePairwiseOnDemand]: 289/293 looper letters, 89 selfloop transitions, 13 changer transitions 9/111 dead transitions. [2023-01-28 02:25:04,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 111 transitions, 855 flow [2023-01-28 02:25:04,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:25:04,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:25:04,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-01-28 02:25:04,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460750853242321 [2023-01-28 02:25:04,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-01-28 02:25:04,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-01-28 02:25:04,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:25:04,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-01-28 02:25:04,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:04,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:04,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:04,867 INFO L175 Difference]: Start difference. First operand has 56 places, 75 transitions, 510 flow. Second operand 3 states and 480 transitions. [2023-01-28 02:25:04,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 111 transitions, 855 flow [2023-01-28 02:25:04,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 111 transitions, 830 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 02:25:04,884 INFO L231 Difference]: Finished difference. Result has 58 places, 77 transitions, 538 flow [2023-01-28 02:25:04,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=538, PETRI_PLACES=58, PETRI_TRANSITIONS=77} [2023-01-28 02:25:04,885 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 8 predicate places. [2023-01-28 02:25:04,885 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 77 transitions, 538 flow [2023-01-28 02:25:04,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:04,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:25:04,885 INFO L208 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] [2023-01-28 02:25:04,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 02:25:05,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:05,093 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:25:05,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:25:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1650756802, now seen corresponding path program 1 times [2023-01-28 02:25:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:25:05,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856982532] [2023-01-28 02:25:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:05,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:25:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:05,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:25:05,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856982532] [2023-01-28 02:25:05,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856982532] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:25:05,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983673413] [2023-01-28 02:25:05,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:05,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:05,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:25:05,225 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) [2023-01-28 02:25:05,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 02:25:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:05,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 02:25:05,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:25:05,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:05,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:25:05,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:05,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983673413] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:25:05,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:25:05,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-01-28 02:25:05,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415791319] [2023-01-28 02:25:05,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:25:05,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:25:05,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:25:05,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:25:05,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:25:05,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 02:25:05,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 77 transitions, 538 flow. Second operand has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:05,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:25:05,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 02:25:05,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:25:06,527 INFO L130 PetriNetUnfolder]: 17771/21680 cut-off events. [2023-01-28 02:25:06,527 INFO L131 PetriNetUnfolder]: For 38903/38903 co-relation queries the response was YES. [2023-01-28 02:25:06,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74244 conditions, 21680 events. 17771/21680 cut-off events. For 38903/38903 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 79240 event pairs, 3731 based on Foata normal form. 565/22245 useless extension candidates. Maximal degree in co-relation 48926. Up to 8936 conditions per place. [2023-01-28 02:25:06,603 INFO L137 encePairwiseOnDemand]: 283/293 looper letters, 127 selfloop transitions, 32 changer transitions 35/194 dead transitions. [2023-01-28 02:25:06,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 194 transitions, 1337 flow [2023-01-28 02:25:06,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:25:06,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:25:06,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 839 transitions. [2023-01-28 02:25:06,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47724687144482364 [2023-01-28 02:25:06,606 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 839 transitions. [2023-01-28 02:25:06,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 839 transitions. [2023-01-28 02:25:06,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:25:06,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 839 transitions. [2023-01-28 02:25:06,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.83333333333334) internal successors, (839), 6 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:06,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:06,609 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:06,609 INFO L175 Difference]: Start difference. First operand has 58 places, 77 transitions, 538 flow. Second operand 6 states and 839 transitions. [2023-01-28 02:25:06,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 194 transitions, 1337 flow [2023-01-28 02:25:06,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 194 transitions, 1324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 02:25:06,759 INFO L231 Difference]: Finished difference. Result has 64 places, 79 transitions, 620 flow [2023-01-28 02:25:06,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=620, PETRI_PLACES=64, PETRI_TRANSITIONS=79} [2023-01-28 02:25:06,760 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 14 predicate places. [2023-01-28 02:25:06,760 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 79 transitions, 620 flow [2023-01-28 02:25:06,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:06,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:25:06,760 INFO L208 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] [2023-01-28 02:25:06,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 02:25:06,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:07,033 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:25:07,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:25:07,034 INFO L85 PathProgramCache]: Analyzing trace with hash 201729358, now seen corresponding path program 1 times [2023-01-28 02:25:07,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:25:07,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179681900] [2023-01-28 02:25:07,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:07,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:25:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:07,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:25:07,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179681900] [2023-01-28 02:25:07,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179681900] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:25:07,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053040711] [2023-01-28 02:25:07,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:07,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:07,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:25:07,202 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) [2023-01-28 02:25:07,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 02:25:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:07,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 02:25:07,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:25:07,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:07,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:25:07,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:07,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053040711] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:25:07,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:25:07,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-01-28 02:25:07,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027974394] [2023-01-28 02:25:07,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:25:07,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:25:07,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:25:07,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:25:07,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:25:07,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 02:25:07,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 79 transitions, 620 flow. Second operand has 6 states, 6 states have (on average 125.66666666666667) internal successors, (754), 6 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:07,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:25:07,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 02:25:07,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:25:09,043 INFO L130 PetriNetUnfolder]: 23171/28330 cut-off events. [2023-01-28 02:25:09,043 INFO L131 PetriNetUnfolder]: For 67761/67761 co-relation queries the response was YES. [2023-01-28 02:25:09,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102761 conditions, 28330 events. 23171/28330 cut-off events. For 67761/67761 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 109009 event pairs, 3613 based on Foata normal form. 757/29087 useless extension candidates. Maximal degree in co-relation 54810. Up to 10010 conditions per place. [2023-01-28 02:25:09,143 INFO L137 encePairwiseOnDemand]: 283/293 looper letters, 154 selfloop transitions, 30 changer transitions 18/202 dead transitions. [2023-01-28 02:25:09,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 202 transitions, 1602 flow [2023-01-28 02:25:09,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:25:09,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:25:09,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 827 transitions. [2023-01-28 02:25:09,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47042093287827075 [2023-01-28 02:25:09,146 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 827 transitions. [2023-01-28 02:25:09,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 827 transitions. [2023-01-28 02:25:09,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:25:09,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 827 transitions. [2023-01-28 02:25:09,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:09,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:09,149 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:09,149 INFO L175 Difference]: Start difference. First operand has 64 places, 79 transitions, 620 flow. Second operand 6 states and 827 transitions. [2023-01-28 02:25:09,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 202 transitions, 1602 flow [2023-01-28 02:25:09,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 202 transitions, 1538 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-01-28 02:25:09,222 INFO L231 Difference]: Finished difference. Result has 69 places, 81 transitions, 663 flow [2023-01-28 02:25:09,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=663, PETRI_PLACES=69, PETRI_TRANSITIONS=81} [2023-01-28 02:25:09,223 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 19 predicate places. [2023-01-28 02:25:09,223 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 81 transitions, 663 flow [2023-01-28 02:25:09,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.66666666666667) internal successors, (754), 6 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:09,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:25:09,223 INFO L208 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] [2023-01-28 02:25:09,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 02:25:09,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:09,429 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:25:09,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:25:09,429 INFO L85 PathProgramCache]: Analyzing trace with hash -735069493, now seen corresponding path program 1 times [2023-01-28 02:25:09,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:25:09,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871392336] [2023-01-28 02:25:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:09,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:25:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:09,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:25:09,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871392336] [2023-01-28 02:25:09,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871392336] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:25:09,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780533717] [2023-01-28 02:25:09,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:09,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:09,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:25:09,560 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) [2023-01-28 02:25:09,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 02:25:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:09,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 02:25:09,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:25:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:09,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:25:09,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:09,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780533717] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:25:09,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:25:09,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-01-28 02:25:09,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048058409] [2023-01-28 02:25:09,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:25:09,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:25:09,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:25:09,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:25:09,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:25:09,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 02:25:09,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 81 transitions, 663 flow. Second operand has 6 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:09,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:25:09,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 02:25:09,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:25:12,104 INFO L130 PetriNetUnfolder]: 32931/40393 cut-off events. [2023-01-28 02:25:12,105 INFO L131 PetriNetUnfolder]: For 112155/112155 co-relation queries the response was YES. [2023-01-28 02:25:12,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159006 conditions, 40393 events. 32931/40393 cut-off events. For 112155/112155 co-relation queries the response was YES. Maximal size of possible extension queue 1028. Compared 167655 event pairs, 4945 based on Foata normal form. 1321/41714 useless extension candidates. Maximal degree in co-relation 98913. Up to 17631 conditions per place. [2023-01-28 02:25:12,234 INFO L137 encePairwiseOnDemand]: 283/293 looper letters, 153 selfloop transitions, 32 changer transitions 25/210 dead transitions. [2023-01-28 02:25:12,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 210 transitions, 1685 flow [2023-01-28 02:25:12,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:25:12,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:25:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 835 transitions. [2023-01-28 02:25:12,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474971558589306 [2023-01-28 02:25:12,237 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 835 transitions. [2023-01-28 02:25:12,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 835 transitions. [2023-01-28 02:25:12,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:25:12,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 835 transitions. [2023-01-28 02:25:12,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.16666666666666) internal successors, (835), 6 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:12,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:12,241 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:12,241 INFO L175 Difference]: Start difference. First operand has 69 places, 81 transitions, 663 flow. Second operand 6 states and 835 transitions. [2023-01-28 02:25:12,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 210 transitions, 1685 flow [2023-01-28 02:25:12,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 210 transitions, 1602 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-01-28 02:25:12,438 INFO L231 Difference]: Finished difference. Result has 73 places, 83 transitions, 705 flow [2023-01-28 02:25:12,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=705, PETRI_PLACES=73, PETRI_TRANSITIONS=83} [2023-01-28 02:25:12,438 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 23 predicate places. [2023-01-28 02:25:12,438 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 83 transitions, 705 flow [2023-01-28 02:25:12,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:12,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:25:12,439 INFO L208 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] [2023-01-28 02:25:12,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-28 02:25:12,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:12,644 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:25:12,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:25:12,645 INFO L85 PathProgramCache]: Analyzing trace with hash -737156810, now seen corresponding path program 1 times [2023-01-28 02:25:12,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:25:12,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264587589] [2023-01-28 02:25:12,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:12,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:25:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:12,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:12,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:25:12,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264587589] [2023-01-28 02:25:12,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264587589] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:25:12,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:25:12,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:25:12,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167630316] [2023-01-28 02:25:12,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:25:12,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:25:12,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:25:12,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:25:12,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:25:12,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 02:25:12,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 83 transitions, 705 flow. Second operand has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:12,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:25:12,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 02:25:12,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:25:15,456 INFO L130 PetriNetUnfolder]: 37866/46390 cut-off events. [2023-01-28 02:25:15,456 INFO L131 PetriNetUnfolder]: For 150964/150964 co-relation queries the response was YES. [2023-01-28 02:25:15,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194579 conditions, 46390 events. 37866/46390 cut-off events. For 150964/150964 co-relation queries the response was YES. Maximal size of possible extension queue 1196. Compared 191228 event pairs, 12186 based on Foata normal form. 1116/47506 useless extension candidates. Maximal degree in co-relation 98049. Up to 40691 conditions per place. [2023-01-28 02:25:15,591 INFO L137 encePairwiseOnDemand]: 285/293 looper letters, 104 selfloop transitions, 26 changer transitions 12/142 dead transitions. [2023-01-28 02:25:15,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 142 transitions, 1284 flow [2023-01-28 02:25:15,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:25:15,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:25:15,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2023-01-28 02:25:15,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46757679180887374 [2023-01-28 02:25:15,593 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2023-01-28 02:25:15,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2023-01-28 02:25:15,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:25:15,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2023-01-28 02:25:15,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:15,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:15,596 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:15,596 INFO L175 Difference]: Start difference. First operand has 73 places, 83 transitions, 705 flow. Second operand 4 states and 548 transitions. [2023-01-28 02:25:15,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 142 transitions, 1284 flow [2023-01-28 02:25:15,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 142 transitions, 1234 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 02:25:15,971 INFO L231 Difference]: Finished difference. Result has 75 places, 84 transitions, 728 flow [2023-01-28 02:25:15,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=728, PETRI_PLACES=75, PETRI_TRANSITIONS=84} [2023-01-28 02:25:15,971 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 25 predicate places. [2023-01-28 02:25:15,971 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 84 transitions, 728 flow [2023-01-28 02:25:15,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:15,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:25:15,972 INFO L208 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] [2023-01-28 02:25:15,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 02:25:15,972 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:25:15,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:25:15,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1437927406, now seen corresponding path program 2 times [2023-01-28 02:25:15,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:25:15,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665292674] [2023-01-28 02:25:15,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:15,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:25:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:16,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:25:16,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665292674] [2023-01-28 02:25:16,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665292674] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:25:16,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:25:16,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:25:16,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378635762] [2023-01-28 02:25:16,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:25:16,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:25:16,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:25:16,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:25:16,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:25:16,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 02:25:16,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 84 transitions, 728 flow. Second operand has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:16,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:25:16,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 02:25:16,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:25:19,170 INFO L130 PetriNetUnfolder]: 43850/53622 cut-off events. [2023-01-28 02:25:19,170 INFO L131 PetriNetUnfolder]: For 171325/171325 co-relation queries the response was YES. [2023-01-28 02:25:19,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230250 conditions, 53622 events. 43850/53622 cut-off events. For 171325/171325 co-relation queries the response was YES. Maximal size of possible extension queue 1370. Compared 224489 event pairs, 14317 based on Foata normal form. 1248/54870 useless extension candidates. Maximal degree in co-relation 127790. Up to 47075 conditions per place. [2023-01-28 02:25:19,348 INFO L137 encePairwiseOnDemand]: 285/293 looper letters, 101 selfloop transitions, 26 changer transitions 12/139 dead transitions. [2023-01-28 02:25:19,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 139 transitions, 1255 flow [2023-01-28 02:25:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:25:19,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:25:19,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2023-01-28 02:25:19,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46757679180887374 [2023-01-28 02:25:19,350 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2023-01-28 02:25:19,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2023-01-28 02:25:19,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:25:19,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2023-01-28 02:25:19,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:19,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:19,353 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:19,353 INFO L175 Difference]: Start difference. First operand has 75 places, 84 transitions, 728 flow. Second operand 4 states and 548 transitions. [2023-01-28 02:25:19,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 139 transitions, 1255 flow [2023-01-28 02:25:19,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 139 transitions, 1206 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 02:25:19,895 INFO L231 Difference]: Finished difference. Result has 77 places, 85 transitions, 746 flow [2023-01-28 02:25:19,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=746, PETRI_PLACES=77, PETRI_TRANSITIONS=85} [2023-01-28 02:25:19,896 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 27 predicate places. [2023-01-28 02:25:19,896 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 85 transitions, 746 flow [2023-01-28 02:25:19,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:19,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:25:19,896 INFO L208 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] [2023-01-28 02:25:19,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 02:25:19,896 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:25:19,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:25:19,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1844332026, now seen corresponding path program 3 times [2023-01-28 02:25:19,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:25:19,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329488416] [2023-01-28 02:25:19,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:19,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:25:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:20,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:20,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:25:20,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329488416] [2023-01-28 02:25:20,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329488416] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:25:20,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:25:20,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:25:20,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138771344] [2023-01-28 02:25:20,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:25:20,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:25:20,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:25:20,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:25:20,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:25:20,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 02:25:20,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 85 transitions, 746 flow. Second operand has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:20,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:25:20,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 02:25:20,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:25:23,438 INFO L130 PetriNetUnfolder]: 47994/58602 cut-off events. [2023-01-28 02:25:23,438 INFO L131 PetriNetUnfolder]: For 202582/202582 co-relation queries the response was YES. [2023-01-28 02:25:23,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257703 conditions, 58602 events. 47994/58602 cut-off events. For 202582/202582 co-relation queries the response was YES. Maximal size of possible extension queue 1503. Compared 246886 event pairs, 15767 based on Foata normal form. 836/59438 useless extension candidates. Maximal degree in co-relation 157494. Up to 53907 conditions per place. [2023-01-28 02:25:23,642 INFO L137 encePairwiseOnDemand]: 285/293 looper letters, 102 selfloop transitions, 26 changer transitions 12/140 dead transitions. [2023-01-28 02:25:23,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 140 transitions, 1279 flow [2023-01-28 02:25:23,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:25:23,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:25:23,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2023-01-28 02:25:23,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46757679180887374 [2023-01-28 02:25:23,643 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2023-01-28 02:25:23,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2023-01-28 02:25:23,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:25:23,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2023-01-28 02:25:23,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:23,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:23,646 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:23,646 INFO L175 Difference]: Start difference. First operand has 77 places, 85 transitions, 746 flow. Second operand 4 states and 548 transitions. [2023-01-28 02:25:23,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 140 transitions, 1279 flow [2023-01-28 02:25:24,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 140 transitions, 1230 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 02:25:24,376 INFO L231 Difference]: Finished difference. Result has 79 places, 86 transitions, 764 flow [2023-01-28 02:25:24,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=764, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2023-01-28 02:25:24,377 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 29 predicate places. [2023-01-28 02:25:24,377 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 764 flow [2023-01-28 02:25:24,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:24,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:25:24,377 INFO L208 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] [2023-01-28 02:25:24,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 02:25:24,378 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:25:24,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:25:24,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1860257788, now seen corresponding path program 1 times [2023-01-28 02:25:24,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:25:24,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367574992] [2023-01-28 02:25:24,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:24,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:25:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:24,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:24,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:25:24,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367574992] [2023-01-28 02:25:24,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367574992] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:25:24,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290088146] [2023-01-28 02:25:24,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:24,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:24,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:25:24,538 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) [2023-01-28 02:25:24,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 02:25:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:24,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 02:25:24,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:25:24,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:25:24,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:25:24,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290088146] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:25:24,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:25:24,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-01-28 02:25:24,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860274106] [2023-01-28 02:25:24,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:25:24,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:25:24,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:25:24,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:25:24,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:25:24,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 293 [2023-01-28 02:25:24,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 764 flow. Second operand has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:24,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:25:24,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 293 [2023-01-28 02:25:24,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:25:27,514 INFO L130 PetriNetUnfolder]: 41648/50891 cut-off events. [2023-01-28 02:25:27,514 INFO L131 PetriNetUnfolder]: For 182917/182917 co-relation queries the response was YES. [2023-01-28 02:25:27,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227042 conditions, 50891 events. 41648/50891 cut-off events. For 182917/182917 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 217306 event pairs, 3683 based on Foata normal form. 1276/52167 useless extension candidates. Maximal degree in co-relation 189713. Up to 23987 conditions per place. [2023-01-28 02:25:27,706 INFO L137 encePairwiseOnDemand]: 288/293 looper letters, 126 selfloop transitions, 14 changer transitions 53/193 dead transitions. [2023-01-28 02:25:27,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 193 transitions, 1731 flow [2023-01-28 02:25:27,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:25:27,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:25:27,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 741 transitions. [2023-01-28 02:25:27,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50580204778157 [2023-01-28 02:25:27,708 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 741 transitions. [2023-01-28 02:25:27,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 741 transitions. [2023-01-28 02:25:27,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:25:27,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 741 transitions. [2023-01-28 02:25:27,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:27,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:27,712 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:27,712 INFO L175 Difference]: Start difference. First operand has 79 places, 86 transitions, 764 flow. Second operand 5 states and 741 transitions. [2023-01-28 02:25:27,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 193 transitions, 1731 flow [2023-01-28 02:25:28,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 193 transitions, 1671 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-01-28 02:25:28,394 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 639 flow [2023-01-28 02:25:28,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=639, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2023-01-28 02:25:28,394 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 32 predicate places. [2023-01-28 02:25:28,394 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 639 flow [2023-01-28 02:25:28,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:28,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:25:28,395 INFO L208 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] [2023-01-28 02:25:28,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 02:25:28,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:28,597 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:25:28,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:25:28,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1742927478, now seen corresponding path program 2 times [2023-01-28 02:25:28,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:25:28,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407482204] [2023-01-28 02:25:28,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:28,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:25:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:28,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:28,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:25:28,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407482204] [2023-01-28 02:25:28,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407482204] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:25:28,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507519089] [2023-01-28 02:25:28,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:25:28,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:28,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:25:28,738 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) [2023-01-28 02:25:28,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 02:25:28,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:25:28,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:25:28,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 02:25:28,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:25:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:25:28,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:25:28,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507519089] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:25:28,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:25:28,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-01-28 02:25:28,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24110523] [2023-01-28 02:25:28,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:25:28,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:25:28,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:25:28,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:25:28,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:25:28,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 293 [2023-01-28 02:25:28,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 639 flow. Second operand has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:28,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:25:28,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 293 [2023-01-28 02:25:28,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:25:30,918 INFO L130 PetriNetUnfolder]: 28960/35192 cut-off events. [2023-01-28 02:25:30,918 INFO L131 PetriNetUnfolder]: For 142660/142660 co-relation queries the response was YES. [2023-01-28 02:25:30,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162237 conditions, 35192 events. 28960/35192 cut-off events. For 142660/142660 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 137323 event pairs, 2134 based on Foata normal form. 822/36014 useless extension candidates. Maximal degree in co-relation 137881. Up to 15973 conditions per place. [2023-01-28 02:25:31,056 INFO L137 encePairwiseOnDemand]: 288/293 looper letters, 131 selfloop transitions, 8 changer transitions 46/185 dead transitions. [2023-01-28 02:25:31,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 185 transitions, 1677 flow [2023-01-28 02:25:31,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:25:31,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:25:31,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 737 transitions. [2023-01-28 02:25:31,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030716723549488 [2023-01-28 02:25:31,058 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 737 transitions. [2023-01-28 02:25:31,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 737 transitions. [2023-01-28 02:25:31,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:25:31,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 737 transitions. [2023-01-28 02:25:31,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:31,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:31,061 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:31,061 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 639 flow. Second operand 5 states and 737 transitions. [2023-01-28 02:25:31,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 185 transitions, 1677 flow [2023-01-28 02:25:31,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 185 transitions, 1625 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-01-28 02:25:31,583 INFO L231 Difference]: Finished difference. Result has 83 places, 70 transitions, 530 flow [2023-01-28 02:25:31,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=530, PETRI_PLACES=83, PETRI_TRANSITIONS=70} [2023-01-28 02:25:31,584 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2023-01-28 02:25:31,584 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 70 transitions, 530 flow [2023-01-28 02:25:31,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:31,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:25:31,584 INFO L208 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] [2023-01-28 02:25:31,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-28 02:25:31,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 02:25:31,792 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:25:31,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:25:31,792 INFO L85 PathProgramCache]: Analyzing trace with hash -66181106, now seen corresponding path program 3 times [2023-01-28 02:25:31,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:25:31,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154517116] [2023-01-28 02:25:31,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:31,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:25:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:31,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:25:31,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154517116] [2023-01-28 02:25:31,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154517116] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:25:31,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410260278] [2023-01-28 02:25:31,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:25:31,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:31,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:25:31,917 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) [2023-01-28 02:25:31,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 02:25:32,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 02:25:32,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:25:32,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 02:25:32,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:25:32,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:25:32,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:25:32,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410260278] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:25:32,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:25:32,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-01-28 02:25:32,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177486181] [2023-01-28 02:25:32,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:25:32,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:25:32,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:25:32,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:25:32,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:25:32,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 293 [2023-01-28 02:25:32,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 70 transitions, 530 flow. Second operand has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:32,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:25:32,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 293 [2023-01-28 02:25:32,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:25:34,064 INFO L130 PetriNetUnfolder]: 26526/32073 cut-off events. [2023-01-28 02:25:34,064 INFO L131 PetriNetUnfolder]: For 127499/127499 co-relation queries the response was YES. [2023-01-28 02:25:34,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150842 conditions, 32073 events. 26526/32073 cut-off events. For 127499/127499 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 118734 event pairs, 3762 based on Foata normal form. 816/32889 useless extension candidates. Maximal degree in co-relation 129072. Up to 20247 conditions per place. [2023-01-28 02:25:34,186 INFO L137 encePairwiseOnDemand]: 289/293 looper letters, 128 selfloop transitions, 9 changer transitions 0/137 dead transitions. [2023-01-28 02:25:34,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 137 transitions, 1233 flow [2023-01-28 02:25:34,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:25:34,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:25:34,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 583 transitions. [2023-01-28 02:25:34,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4974402730375427 [2023-01-28 02:25:34,195 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 583 transitions. [2023-01-28 02:25:34,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 583 transitions. [2023-01-28 02:25:34,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:25:34,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 583 transitions. [2023-01-28 02:25:34,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:34,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:34,198 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:34,198 INFO L175 Difference]: Start difference. First operand has 83 places, 70 transitions, 530 flow. Second operand 4 states and 583 transitions. [2023-01-28 02:25:34,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 137 transitions, 1233 flow [2023-01-28 02:25:34,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 137 transitions, 1209 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-28 02:25:34,444 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 539 flow [2023-01-28 02:25:34,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=539, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2023-01-28 02:25:34,445 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2023-01-28 02:25:34,445 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 539 flow [2023-01-28 02:25:34,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:34,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:25:34,445 INFO L208 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] [2023-01-28 02:25:34,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 02:25:34,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 02:25:34,650 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:25:34,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:25:34,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1199386863, now seen corresponding path program 1 times [2023-01-28 02:25:34,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:25:34,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326278997] [2023-01-28 02:25:34,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:34,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:25:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:34,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:25:34,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326278997] [2023-01-28 02:25:34,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326278997] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:25:34,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:25:34,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:25:34,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185308728] [2023-01-28 02:25:34,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:25:34,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:25:34,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:25:34,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:25:34,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:25:34,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 02:25:34,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 539 flow. Second operand has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:34,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:25:34,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 02:25:34,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:25:36,756 INFO L130 PetriNetUnfolder]: 28538/34525 cut-off events. [2023-01-28 02:25:36,756 INFO L131 PetriNetUnfolder]: For 152390/152390 co-relation queries the response was YES. [2023-01-28 02:25:36,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168078 conditions, 34525 events. 28538/34525 cut-off events. For 152390/152390 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 132521 event pairs, 4076 based on Foata normal form. 440/34965 useless extension candidates. Maximal degree in co-relation 128356. Up to 19933 conditions per place. [2023-01-28 02:25:36,910 INFO L137 encePairwiseOnDemand]: 284/293 looper letters, 104 selfloop transitions, 8 changer transitions 27/139 dead transitions. [2023-01-28 02:25:36,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 139 transitions, 1166 flow [2023-01-28 02:25:36,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:25:36,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:25:36,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 668 transitions. [2023-01-28 02:25:36,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4559726962457338 [2023-01-28 02:25:36,912 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 668 transitions. [2023-01-28 02:25:36,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 668 transitions. [2023-01-28 02:25:36,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:25:36,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 668 transitions. [2023-01-28 02:25:36,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.6) internal successors, (668), 5 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:36,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:36,915 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:36,915 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 539 flow. Second operand 5 states and 668 transitions. [2023-01-28 02:25:36,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 139 transitions, 1166 flow [2023-01-28 02:25:37,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 139 transitions, 1136 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-28 02:25:37,596 INFO L231 Difference]: Finished difference. Result has 86 places, 66 transitions, 476 flow [2023-01-28 02:25:37,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=476, PETRI_PLACES=86, PETRI_TRANSITIONS=66} [2023-01-28 02:25:37,597 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 36 predicate places. [2023-01-28 02:25:37,597 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 66 transitions, 476 flow [2023-01-28 02:25:37,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:37,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:25:37,597 INFO L208 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] [2023-01-28 02:25:37,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 02:25:37,598 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:25:37,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:25:37,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1898826339, now seen corresponding path program 2 times [2023-01-28 02:25:37,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:25:37,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419388691] [2023-01-28 02:25:37,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:37,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:25:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:25:37,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:25:37,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419388691] [2023-01-28 02:25:37,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419388691] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:25:37,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512626252] [2023-01-28 02:25:37,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:25:37,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:37,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:25:37,725 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) [2023-01-28 02:25:37,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 02:25:37,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:25:37,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:25:37,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 02:25:37,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:25:37,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:37,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:25:38,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:25:38,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512626252] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:25:38,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:25:38,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2023-01-28 02:25:38,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955504180] [2023-01-28 02:25:38,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:25:38,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:25:38,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:25:38,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:25:38,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:25:38,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 02:25:38,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 66 transitions, 476 flow. Second operand has 6 states, 6 states have (on average 125.0) internal successors, (750), 6 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:38,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:25:38,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 02:25:38,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:25:40,256 INFO L130 PetriNetUnfolder]: 31652/38211 cut-off events. [2023-01-28 02:25:40,256 INFO L131 PetriNetUnfolder]: For 158224/158224 co-relation queries the response was YES. [2023-01-28 02:25:40,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181614 conditions, 38211 events. 31652/38211 cut-off events. For 158224/158224 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 149404 event pairs, 2800 based on Foata normal form. 1040/39251 useless extension candidates. Maximal degree in co-relation 155763. Up to 25583 conditions per place. [2023-01-28 02:25:40,447 INFO L137 encePairwiseOnDemand]: 284/293 looper letters, 156 selfloop transitions, 16 changer transitions 0/172 dead transitions. [2023-01-28 02:25:40,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 172 transitions, 1418 flow [2023-01-28 02:25:40,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:25:40,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:25:40,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 799 transitions. [2023-01-28 02:25:40,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45449374288964733 [2023-01-28 02:25:40,449 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 799 transitions. [2023-01-28 02:25:40,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 799 transitions. [2023-01-28 02:25:40,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:25:40,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 799 transitions. [2023-01-28 02:25:40,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.16666666666666) internal successors, (799), 6 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:40,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:40,452 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:40,452 INFO L175 Difference]: Start difference. First operand has 86 places, 66 transitions, 476 flow. Second operand 6 states and 799 transitions. [2023-01-28 02:25:40,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 172 transitions, 1418 flow [2023-01-28 02:25:41,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 172 transitions, 1399 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 02:25:41,015 INFO L231 Difference]: Finished difference. Result has 89 places, 70 transitions, 545 flow [2023-01-28 02:25:41,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=545, PETRI_PLACES=89, PETRI_TRANSITIONS=70} [2023-01-28 02:25:41,015 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2023-01-28 02:25:41,015 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 70 transitions, 545 flow [2023-01-28 02:25:41,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.0) internal successors, (750), 6 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:41,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:25:41,016 INFO L208 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] [2023-01-28 02:25:41,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 02:25:41,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 02:25:41,216 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:25:41,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:25:41,217 INFO L85 PathProgramCache]: Analyzing trace with hash -2075406454, now seen corresponding path program 1 times [2023-01-28 02:25:41,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:25:41,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051277656] [2023-01-28 02:25:41,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:41,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:25:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:25:41,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:25:41,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051277656] [2023-01-28 02:25:41,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051277656] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:25:41,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761329238] [2023-01-28 02:25:41,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:41,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:41,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:25:41,341 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:25:41,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 02:25:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:41,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 02:25:41,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:25:41,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:25:41,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:25:41,537 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:25:41,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761329238] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:25:41,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:25:41,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2023-01-28 02:25:41,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965918573] [2023-01-28 02:25:41,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:25:41,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:25:41,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:25:41,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:25:41,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:25:41,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 02:25:41,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 70 transitions, 545 flow. Second operand has 6 states, 6 states have (on average 124.83333333333333) internal successors, (749), 6 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:41,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:25:41,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 02:25:41,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:25:43,630 INFO L130 PetriNetUnfolder]: 26332/31772 cut-off events. [2023-01-28 02:25:43,630 INFO L131 PetriNetUnfolder]: For 184435/184435 co-relation queries the response was YES. [2023-01-28 02:25:43,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161790 conditions, 31772 events. 26332/31772 cut-off events. For 184435/184435 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 120110 event pairs, 1722 based on Foata normal form. 808/32580 useless extension candidates. Maximal degree in co-relation 139667. Up to 13156 conditions per place. [2023-01-28 02:25:43,771 INFO L137 encePairwiseOnDemand]: 284/293 looper letters, 138 selfloop transitions, 12 changer transitions 47/197 dead transitions. [2023-01-28 02:25:43,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 197 transitions, 1762 flow [2023-01-28 02:25:43,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:25:43,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:25:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 808 transitions. [2023-01-28 02:25:43,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459613196814562 [2023-01-28 02:25:43,774 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 808 transitions. [2023-01-28 02:25:43,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 808 transitions. [2023-01-28 02:25:43,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:25:43,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 808 transitions. [2023-01-28 02:25:43,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 134.66666666666666) internal successors, (808), 6 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:43,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:43,777 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:43,777 INFO L175 Difference]: Start difference. First operand has 89 places, 70 transitions, 545 flow. Second operand 6 states and 808 transitions. [2023-01-28 02:25:43,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 197 transitions, 1762 flow [2023-01-28 02:25:44,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 197 transitions, 1685 flow, removed 29 selfloop flow, removed 2 redundant places. [2023-01-28 02:25:44,145 INFO L231 Difference]: Finished difference. Result has 93 places, 70 transitions, 548 flow [2023-01-28 02:25:44,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=548, PETRI_PLACES=93, PETRI_TRANSITIONS=70} [2023-01-28 02:25:44,146 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 43 predicate places. [2023-01-28 02:25:44,146 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 70 transitions, 548 flow [2023-01-28 02:25:44,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.83333333333333) internal successors, (749), 6 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:44,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:25:44,146 INFO L208 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] [2023-01-28 02:25:44,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 02:25:44,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:44,347 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:25:44,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:25:44,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1490440730, now seen corresponding path program 2 times [2023-01-28 02:25:44,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:25:44,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915962618] [2023-01-28 02:25:44,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:44,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:25:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:44,527 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:25:44,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:25:44,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915962618] [2023-01-28 02:25:44,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915962618] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:25:44,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611697412] [2023-01-28 02:25:44,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:25:44,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:44,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:25:44,528 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:25:44,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 02:25:44,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:25:44,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:25:44,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 02:25:44,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:25:44,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:25:44,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:25:44,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611697412] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:25:44,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:25:44,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-01-28 02:25:44,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353034008] [2023-01-28 02:25:44,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:25:44,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:25:44,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:25:44,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:25:44,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:25:44,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 293 [2023-01-28 02:25:44,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 70 transitions, 548 flow. Second operand has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:44,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:25:44,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 293 [2023-01-28 02:25:44,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:25:46,365 INFO L130 PetriNetUnfolder]: 22304/26705 cut-off events. [2023-01-28 02:25:46,365 INFO L131 PetriNetUnfolder]: For 140725/140725 co-relation queries the response was YES. [2023-01-28 02:25:46,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136097 conditions, 26705 events. 22304/26705 cut-off events. For 140725/140725 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 92892 event pairs, 5480 based on Foata normal form. 592/27297 useless extension candidates. Maximal degree in co-relation 118448. Up to 19461 conditions per place. [2023-01-28 02:25:46,509 INFO L137 encePairwiseOnDemand]: 289/293 looper letters, 132 selfloop transitions, 9 changer transitions 0/141 dead transitions. [2023-01-28 02:25:46,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 141 transitions, 1299 flow [2023-01-28 02:25:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:25:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:25:46,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 583 transitions. [2023-01-28 02:25:46,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4974402730375427 [2023-01-28 02:25:46,511 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 583 transitions. [2023-01-28 02:25:46,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 583 transitions. [2023-01-28 02:25:46,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:25:46,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 583 transitions. [2023-01-28 02:25:46,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:46,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:46,513 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:46,513 INFO L175 Difference]: Start difference. First operand has 93 places, 70 transitions, 548 flow. Second operand 4 states and 583 transitions. [2023-01-28 02:25:46,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 141 transitions, 1299 flow [2023-01-28 02:25:46,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 141 transitions, 1265 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 02:25:46,874 INFO L231 Difference]: Finished difference. Result has 93 places, 71 transitions, 550 flow [2023-01-28 02:25:46,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=550, PETRI_PLACES=93, PETRI_TRANSITIONS=71} [2023-01-28 02:25:46,875 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 43 predicate places. [2023-01-28 02:25:46,875 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 71 transitions, 550 flow [2023-01-28 02:25:46,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:25:46,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:25:46,875 INFO L208 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] [2023-01-28 02:25:46,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-01-28 02:25:47,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:47,080 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:25:47,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:25:47,080 INFO L85 PathProgramCache]: Analyzing trace with hash 460065354, now seen corresponding path program 1 times [2023-01-28 02:25:47,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:25:47,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083214381] [2023-01-28 02:25:47,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:47,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:25:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:25:47,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:25:47,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083214381] [2023-01-28 02:25:47,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083214381] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:25:47,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594033957] [2023-01-28 02:25:47,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:25:47,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:25:47,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:25:47,548 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:25:47,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 02:25:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:25:56,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 02:25:56,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:25:59,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:25:59,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:26:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:26:55,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594033957] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:26:55,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:26:55,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 4, 4] total 10 [2023-01-28 02:26:55,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344284837] [2023-01-28 02:26:55,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:26:55,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:26:55,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:26:55,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:26:55,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=94, Unknown=4, NotChecked=0, Total=132 [2023-01-28 02:26:55,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 293 [2023-01-28 02:26:55,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 71 transitions, 550 flow. Second operand has 12 states, 12 states have (on average 129.25) internal successors, (1551), 12 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:26:55,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:26:55,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 293 [2023-01-28 02:26:55,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:26:57,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:01,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:03,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:05,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:07,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:10,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:12,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:15,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:17,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:18,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:20,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:22,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:24,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:25,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:32,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:34,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:36,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:38,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:40,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:42,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:27:47,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:28:04,954 WARN L222 SmtUtils]: Spent 14.42s on a formula simplification. DAG size of input: 76 DAG size of output: 27 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 02:28:07,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:28:09,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:28:11,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:28:13,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:28:15,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:28:17,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:28:20,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:28:22,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:28:25,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:28:27,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:28:49,660 WARN L222 SmtUtils]: Spent 16.37s on a formula simplification. DAG size of input: 68 DAG size of output: 17 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 02:28:52,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:28:54,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:28:56,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:28:59,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:29:02,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:29:04,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:29:07,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:29:16,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:29:18,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:29:20,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:29:22,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:29:27,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:29:35,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:29:37,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:29:51,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:29:52,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:29:54,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:29:56,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:29:57,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:29:59,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:30:01,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:30:03,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:30:05,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:30:09,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:30:15,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:30:18,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:30:22,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:30:33,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:30:35,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:30:46,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:30:48,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:30:52,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:30:54,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:30:57,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:30:59,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:31:01,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:31:03,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:31:05,156 INFO L130 PetriNetUnfolder]: 238314/287187 cut-off events. [2023-01-28 02:31:05,156 INFO L131 PetriNetUnfolder]: For 1534662/1534662 co-relation queries the response was YES. [2023-01-28 02:31:06,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1482431 conditions, 287187 events. 238314/287187 cut-off events. For 1534662/1534662 co-relation queries the response was YES. Maximal size of possible extension queue 6640. Compared 1370953 event pairs, 5842 based on Foata normal form. 4144/291331 useless extension candidates. Maximal degree in co-relation 1165269. Up to 108074 conditions per place. [2023-01-28 02:31:07,248 INFO L137 encePairwiseOnDemand]: 266/293 looper letters, 753 selfloop transitions, 242 changer transitions 546/1541 dead transitions. [2023-01-28 02:31:07,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 1541 transitions, 13459 flow [2023-01-28 02:31:07,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-01-28 02:31:07,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-01-28 02:31:07,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 5657 transitions. [2023-01-28 02:31:07,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49505557014089435 [2023-01-28 02:31:07,259 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 5657 transitions. [2023-01-28 02:31:07,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 5657 transitions. [2023-01-28 02:31:07,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:31:07,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 5657 transitions. [2023-01-28 02:31:07,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 145.05128205128204) internal successors, (5657), 39 states have internal predecessors, (5657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:07,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 293.0) internal successors, (11720), 40 states have internal predecessors, (11720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:07,278 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 293.0) internal successors, (11720), 40 states have internal predecessors, (11720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:07,278 INFO L175 Difference]: Start difference. First operand has 93 places, 71 transitions, 550 flow. Second operand 39 states and 5657 transitions. [2023-01-28 02:31:07,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 1541 transitions, 13459 flow [2023-01-28 02:31:38,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 1541 transitions, 13250 flow, removed 69 selfloop flow, removed 2 redundant places. [2023-01-28 02:31:38,401 INFO L231 Difference]: Finished difference. Result has 147 places, 353 transitions, 3734 flow [2023-01-28 02:31:38,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3734, PETRI_PLACES=147, PETRI_TRANSITIONS=353} [2023-01-28 02:31:38,401 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 97 predicate places. [2023-01-28 02:31:38,402 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 353 transitions, 3734 flow [2023-01-28 02:31:38,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 129.25) internal successors, (1551), 12 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:31:38,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:31:38,402 INFO L208 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] [2023-01-28 02:31:38,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-28 02:31:38,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-01-28 02:31:38,603 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 02:31:38,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:31:38,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1244368104, now seen corresponding path program 2 times [2023-01-28 02:31:38,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:31:38,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272747765] [2023-01-28 02:31:38,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:31:38,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:31:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:31:39,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:31:39,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:31:39,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272747765] [2023-01-28 02:31:39,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272747765] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:31:39,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404821143] [2023-01-28 02:31:39,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:31:39,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:31:39,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:31:39,037 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:31:39,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 02:31:51,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:31:51,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:31:51,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 02:31:51,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:31:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:31:54,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:32:36,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:32:36,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404821143] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:32:36,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:32:36,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 15 [2023-01-28 02:32:36,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515295935] [2023-01-28 02:32:36,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:32:36,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 02:32:36,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:32:36,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 02:32:36,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=217, Unknown=4, NotChecked=0, Total=272 [2023-01-28 02:32:36,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 293 [2023-01-28 02:32:36,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 353 transitions, 3734 flow. Second operand has 17 states, 17 states have (on average 120.52941176470588) internal successors, (2049), 17 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:32:36,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:32:36,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 293 [2023-01-28 02:32:36,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:32:38,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:32:45,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:32:48,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:32:53,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:32:55,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:32:57,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:33:21,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:33:35,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:33:37,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:33:39,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:33:41,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:33:52,711 WARN L222 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 68 DAG size of output: 67 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 02:34:31,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:34:33,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:34:40,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:34:44,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:34:48,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:34:50,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:34:52,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:34:54,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:34:57,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:34:59,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:35:01,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:35:11,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:35:13,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:35:15,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:35:17,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:35:19,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:35:21,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:35:25,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:35:27,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:35:30,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:35:33,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:35:35,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:35:45,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:35:47,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:36:01,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:36:03,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:36:04,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:36:15,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:36:17,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:36:37,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:36:47,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:36:49,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:36:54,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:36:59,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:37:07,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:37:09,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:37:10,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:37:12,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:37:30,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:37:33,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:37:35,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:37:37,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:37:43,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:38:20,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:38:43,940 WARN L222 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 85 DAG size of output: 81 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-01-28 02:39:06,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2023-01-28 02:39:06,730 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-01-28 02:39:06,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-28 02:39:06,753 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 02:39:06,753 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 02:39:06,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:39:06,931 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantifier-free) to 131 known predicates. [2023-01-28 02:39:06,932 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2023-01-28 02:39:06,932 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-01-28 02:39:06,932 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-01-28 02:39:06,932 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-01-28 02:39:06,932 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-01-28 02:39:06,932 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2023-01-28 02:39:06,932 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-01-28 02:39:06,934 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 02:39:06,935 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 02:39:06,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 02:39:06 BasicIcfg [2023-01-28 02:39:06,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 02:39:06,936 INFO L158 Benchmark]: Toolchain (without parser) took 854621.20ms. Allocated memory was 394.3MB in the beginning and 14.3GB in the end (delta: 13.9GB). Free memory was 356.1MB in the beginning and 7.5GB in the end (delta: -7.1GB). Peak memory consumption was 6.8GB. Max. memory is 16.0GB. [2023-01-28 02:39:06,937 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 394.3MB. Free memory is still 342.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 02:39:06,937 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.30ms. Allocated memory is still 394.3MB. Free memory was 356.1MB in the beginning and 344.5MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 02:39:06,937 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.95ms. Allocated memory is still 394.3MB. Free memory was 344.5MB in the beginning and 342.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 02:39:06,937 INFO L158 Benchmark]: Boogie Preprocessor took 24.12ms. Allocated memory is still 394.3MB. Free memory was 342.5MB in the beginning and 340.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 02:39:06,937 INFO L158 Benchmark]: RCFGBuilder took 386.19ms. Allocated memory is still 394.3MB. Free memory was 340.8MB in the beginning and 323.1MB in the end (delta: 17.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 02:39:06,937 INFO L158 Benchmark]: TraceAbstraction took 853995.03ms. Allocated memory was 394.3MB in the beginning and 14.3GB in the end (delta: 13.9GB). Free memory was 322.7MB in the beginning and 7.5GB in the end (delta: -7.1GB). Peak memory consumption was 6.7GB. Max. memory is 16.0GB. [2023-01-28 02:39:06,938 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 394.3MB. Free memory is still 342.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 176.30ms. Allocated memory is still 394.3MB. Free memory was 356.1MB in the beginning and 344.5MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 29.95ms. Allocated memory is still 394.3MB. Free memory was 344.5MB in the beginning and 342.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.12ms. Allocated memory is still 394.3MB. Free memory was 342.5MB in the beginning and 340.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 386.19ms. Allocated memory is still 394.3MB. Free memory was 340.8MB in the beginning and 323.1MB in the end (delta: 17.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 853995.03ms. Allocated memory was 394.3MB in the beginning and 14.3GB in the end (delta: 13.9GB). Free memory was 322.7MB in the beginning and 7.5GB in the end (delta: -7.1GB). Peak memory consumption was 6.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0s, 152 PlacesBefore, 50 PlacesAfterwards, 147 TransitionsBefore, 37 TransitionsAfterwards, 2916 CoEnabledTransitionPairs, 7 FixpointIterations, 59 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 12 ConcurrentYvCompositions, 8 ChoiceCompositions, 124 TotalNumberOfCompositions, 3543 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3543, independent: 3543, independent conditional: 0, independent unconditional: 3543, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1564, independent: 1564, independent conditional: 0, independent unconditional: 1564, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3543, independent: 1979, independent conditional: 0, independent unconditional: 1979, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1564, unknown conditional: 0, unknown unconditional: 1564] , Statistics on independence cache: Total cache size (in pairs): 147, Positive cache size: 147, Positive conditional cache size: 0, Positive unconditional cache size: 147, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 131 known predicates. - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 131 known predicates. - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 131 known predicates. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 131 known predicates. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 131 known predicates. - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 131 known predicates. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 131 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 13 procedures, 192 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 853.9s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 713.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 102 mSolverCounterUnknown, 2299 SdHoareTripleChecker+Valid, 300.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2299 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 298.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 176 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7350 IncrementalHoareTripleChecker+Invalid, 7628 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 176 mSolverCounterUnsat, 0 mSDtfsCounter, 7350 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 946 GetRequests, 684 SyntacticMatches, 25 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7910 ImplicationChecksByTransitivity, 332.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3734occurred in iteration=21, InterpolantAutomatonStates: 128, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 22.3s SatisfiabilityAnalysisTime, 108.0s InterpolantComputationTime, 1238 NumberOfCodeBlocks, 1234 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 1442 ConstructedInterpolants, 0 QuantifiedInterpolants, 28995 SizeOfPredicates, 108 NumberOfNonLiveVariables, 4554 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 43 InterpolantComputations, 15 PerfectInterpolantSequences, 117/152 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown