/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 AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/unroll-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 12:01:36,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 12:01:36,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 12:01:36,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 12:01:36,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 12:01:36,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 12:01:36,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 12:01:36,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 12:01:36,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 12:01:36,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 12:01:36,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 12:01:36,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 12:01:36,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 12:01:36,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 12:01:36,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 12:01:36,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 12:01:36,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 12:01:36,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 12:01:36,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 12:01:36,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 12:01:36,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 12:01:36,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 12:01:36,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 12:01:36,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 12:01:36,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 12:01:36,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 12:01:36,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 12:01:36,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 12:01:36,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 12:01:36,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 12:01:36,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 12:01:36,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 12:01:36,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 12:01:36,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 12:01:36,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 12:01:36,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 12:01:36,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 12:01:36,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 12:01:36,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 12:01:36,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 12:01:36,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 12:01:36,994 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 12:01:37,016 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 12:01:37,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 12:01:37,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 12:01:37,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 12:01:37,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 12:01:37,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 12:01:37,018 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 12:01:37,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 12:01:37,019 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 12:01:37,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 12:01:37,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 12:01:37,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 12:01:37,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 12:01:37,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 12:01:37,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 12:01:37,020 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 12:01:37,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 12:01:37,020 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 12:01:37,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 12:01:37,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 12:01:37,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 12:01:37,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 12:01:37,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 12:01:37,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:01:37,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 12:01:37,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 12:01:37,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 12:01:37,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 12:01:37,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 12:01:37,022 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 12:01:37,022 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 12:01:37,022 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 12:01:37,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 12:01:37,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 12:01:37,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 12:01:37,263 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 12:01:37,263 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 12:01:37,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-2.wvr.c [2023-01-28 12:01:38,383 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 12:01:38,561 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 12:01:38,561 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-2.wvr.c [2023-01-28 12:01:38,566 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e69909c0/76999440e6fd4377baaec0e28612adb6/FLAG6d49b0ec3 [2023-01-28 12:01:38,578 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e69909c0/76999440e6fd4377baaec0e28612adb6 [2023-01-28 12:01:38,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 12:01:38,581 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 12:01:38,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 12:01:38,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 12:01:38,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 12:01:38,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:01:38" (1/1) ... [2023-01-28 12:01:38,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20be7104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:38, skipping insertion in model container [2023-01-28 12:01:38,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:01:38" (1/1) ... [2023-01-28 12:01:38,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 12:01:38,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 12:01:38,727 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/unroll-2.wvr.c[2428,2441] [2023-01-28 12:01:38,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:01:38,741 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 12:01:38,757 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/unroll-2.wvr.c[2428,2441] [2023-01-28 12:01:38,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:01:38,770 INFO L208 MainTranslator]: Completed translation [2023-01-28 12:01:38,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:38 WrapperNode [2023-01-28 12:01:38,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 12:01:38,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 12:01:38,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 12:01:38,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 12:01:38,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:38" (1/1) ... [2023-01-28 12:01:38,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:38" (1/1) ... [2023-01-28 12:01:38,800 INFO L138 Inliner]: procedures = 24, calls = 32, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 137 [2023-01-28 12:01:38,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 12:01:38,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 12:01:38,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 12:01:38,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 12:01:38,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:38" (1/1) ... [2023-01-28 12:01:38,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:38" (1/1) ... [2023-01-28 12:01:38,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:38" (1/1) ... [2023-01-28 12:01:38,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:38" (1/1) ... [2023-01-28 12:01:38,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:38" (1/1) ... [2023-01-28 12:01:38,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:38" (1/1) ... [2023-01-28 12:01:38,822 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:38" (1/1) ... [2023-01-28 12:01:38,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:38" (1/1) ... [2023-01-28 12:01:38,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 12:01:38,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 12:01:38,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 12:01:38,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 12:01:38,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:38" (1/1) ... [2023-01-28 12:01:38,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:01:38,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:01:38,852 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 12:01:38,854 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 12:01:38,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 12:01:38,880 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 12:01:38,881 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 12:01:38,881 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 12:01:38,881 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 12:01:38,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 12:01:38,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 12:01:38,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 12:01:38,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 12:01:38,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 12:01:38,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 12:01:38,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 12:01:38,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 12:01:38,886 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 12:01:39,021 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 12:01:39,023 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 12:01:39,324 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 12:01:39,339 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 12:01:39,339 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-28 12:01:39,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:01:39 BoogieIcfgContainer [2023-01-28 12:01:39,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 12:01:39,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 12:01:39,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 12:01:39,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 12:01:39,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:01:38" (1/3) ... [2023-01-28 12:01:39,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e617d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:01:39, skipping insertion in model container [2023-01-28 12:01:39,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:38" (2/3) ... [2023-01-28 12:01:39,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e617d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:01:39, skipping insertion in model container [2023-01-28 12:01:39,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:01:39" (3/3) ... [2023-01-28 12:01:39,348 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-2.wvr.c [2023-01-28 12:01:39,364 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 12:01:39,365 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 12:01:39,365 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 12:01:39,480 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 12:01:39,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 157 transitions, 330 flow [2023-01-28 12:01:39,605 INFO L130 PetriNetUnfolder]: 14/155 cut-off events. [2023-01-28 12:01:39,605 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:01:39,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 155 events. 14/155 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 148 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2023-01-28 12:01:39,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 157 transitions, 330 flow [2023-01-28 12:01:39,615 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 147 transitions, 306 flow [2023-01-28 12:01:39,619 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 12:01:39,635 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 147 transitions, 306 flow [2023-01-28 12:01:39,637 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 147 transitions, 306 flow [2023-01-28 12:01:39,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 147 transitions, 306 flow [2023-01-28 12:01:39,671 INFO L130 PetriNetUnfolder]: 14/147 cut-off events. [2023-01-28 12:01:39,671 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:01:39,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 147 events. 14/147 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 141 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2023-01-28 12:01:39,674 INFO L119 LiptonReduction]: Number of co-enabled transitions 1942 [2023-01-28 12:01:43,762 INFO L134 LiptonReduction]: Checked pairs total: 1977 [2023-01-28 12:01:43,762 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-01-28 12:01:43,775 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 12:01:43,780 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;@7e9eb488, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 12:01:43,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 12:01:43,785 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-01-28 12:01:43,786 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:01:43,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:01:43,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:01:43,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:01:43,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:01:43,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1597977991, now seen corresponding path program 1 times [2023-01-28 12:01:43,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:01:43,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439068401] [2023-01-28 12:01:43,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:43,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:01:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:44,193 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 12:01:44,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:01:44,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439068401] [2023-01-28 12:01:44,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439068401] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:01:44,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:01:44,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 12:01:44,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601396374] [2023-01-28 12:01:44,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:01:44,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:01:44,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:01:44,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:01:44,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:01:44,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 330 [2023-01-28 12:01:44,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 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 12:01:44,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:01:44,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 330 [2023-01-28 12:01:44,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:01:44,283 INFO L130 PetriNetUnfolder]: 45/80 cut-off events. [2023-01-28 12:01:44,284 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 12:01:44,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 80 events. 45/80 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 178 event pairs, 18 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 120. Up to 76 conditions per place. [2023-01-28 12:01:44,286 INFO L137 encePairwiseOnDemand]: 327/330 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-01-28 12:01:44,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 80 flow [2023-01-28 12:01:44,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:01:44,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:01:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2023-01-28 12:01:44,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2023-01-28 12:01:44,300 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2023-01-28 12:01:44,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2023-01-28 12:01:44,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:01:44,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2023-01-28 12:01:44,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 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 12:01:44,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 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 12:01:44,312 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 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 12:01:44,314 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 407 transitions. [2023-01-28 12:01:44,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 80 flow [2023-01-28 12:01:44,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 12:01:44,318 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2023-01-28 12:01:44,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2023-01-28 12:01:44,323 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2023-01-28 12:01:44,323 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2023-01-28 12:01:44,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 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 12:01:44,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:01:44,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:01:44,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 12:01:44,324 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:01:44,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:01:44,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1173402768, now seen corresponding path program 1 times [2023-01-28 12:01:44,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:01:44,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74109223] [2023-01-28 12:01:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:44,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:01:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:44,478 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 12:01:44,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:01:44,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74109223] [2023-01-28 12:01:44,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74109223] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:01:44,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:01:44,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 12:01:44,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573619739] [2023-01-28 12:01:44,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:01:44,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:01:44,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:01:44,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:01:44,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:01:44,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 330 [2023-01-28 12:01:44,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 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 12:01:44,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:01:44,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 330 [2023-01-28 12:01:44,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:01:44,536 INFO L130 PetriNetUnfolder]: 66/117 cut-off events. [2023-01-28 12:01:44,536 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:01:44,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 117 events. 66/117 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 319 event pairs, 9 based on Foata normal form. 1/79 useless extension candidates. Maximal degree in co-relation 234. Up to 85 conditions per place. [2023-01-28 12:01:44,538 INFO L137 encePairwiseOnDemand]: 326/330 looper letters, 22 selfloop transitions, 3 changer transitions 1/28 dead transitions. [2023-01-28 12:01:44,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 28 transitions, 125 flow [2023-01-28 12:01:44,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:01:44,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:01:44,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 413 transitions. [2023-01-28 12:01:44,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4171717171717172 [2023-01-28 12:01:44,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 413 transitions. [2023-01-28 12:01:44,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 413 transitions. [2023-01-28 12:01:44,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:01:44,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 413 transitions. [2023-01-28 12:01:44,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 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 12:01:44,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 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 12:01:44,546 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 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 12:01:44,546 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 3 states and 413 transitions. [2023-01-28 12:01:44,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 28 transitions, 125 flow [2023-01-28 12:01:44,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 121 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 12:01:44,547 INFO L231 Difference]: Finished difference. Result has 22 places, 20 transitions, 65 flow [2023-01-28 12:01:44,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=22, PETRI_TRANSITIONS=20} [2023-01-28 12:01:44,548 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2023-01-28 12:01:44,548 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 20 transitions, 65 flow [2023-01-28 12:01:44,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 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 12:01:44,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:01:44,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:01:44,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 12:01:44,550 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:01:44,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:01:44,550 INFO L85 PathProgramCache]: Analyzing trace with hash -592440007, now seen corresponding path program 1 times [2023-01-28 12:01:44,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:01:44,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719654746] [2023-01-28 12:01:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:44,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:01:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:44,675 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 12:01:44,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:01:44,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719654746] [2023-01-28 12:01:44,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719654746] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:01:44,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:01:44,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:01:44,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043815823] [2023-01-28 12:01:44,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:01:44,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:01:44,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:01:44,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:01:44,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:01:44,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:01:44,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 129.2) internal successors, (646), 5 states have internal predecessors, (646), 0 states have call successors, (0), 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 12:01:44,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:01:44,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:01:44,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:01:44,787 INFO L130 PetriNetUnfolder]: 85/170 cut-off events. [2023-01-28 12:01:44,787 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-01-28 12:01:44,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 170 events. 85/170 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 563 event pairs, 26 based on Foata normal form. 12/181 useless extension candidates. Maximal degree in co-relation 386. Up to 87 conditions per place. [2023-01-28 12:01:44,789 INFO L137 encePairwiseOnDemand]: 325/330 looper letters, 31 selfloop transitions, 4 changer transitions 8/43 dead transitions. [2023-01-28 12:01:44,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 43 transitions, 212 flow [2023-01-28 12:01:44,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:01:44,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:01:44,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 671 transitions. [2023-01-28 12:01:44,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066666666666667 [2023-01-28 12:01:44,792 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 671 transitions. [2023-01-28 12:01:44,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 671 transitions. [2023-01-28 12:01:44,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:01:44,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 671 transitions. [2023-01-28 12:01:44,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 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 12:01:44,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 330.0) internal successors, (1980), 6 states have internal predecessors, (1980), 0 states have call successors, (0), 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 12:01:44,798 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 330.0) internal successors, (1980), 6 states have internal predecessors, (1980), 0 states have call successors, (0), 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 12:01:44,798 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 65 flow. Second operand 5 states and 671 transitions. [2023-01-28 12:01:44,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 43 transitions, 212 flow [2023-01-28 12:01:44,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 43 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 12:01:44,799 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 93 flow [2023-01-28 12:01:44,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=93, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-01-28 12:01:44,800 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 7 predicate places. [2023-01-28 12:01:44,801 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 93 flow [2023-01-28 12:01:44,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.2) internal successors, (646), 5 states have internal predecessors, (646), 0 states have call successors, (0), 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 12:01:44,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:01:44,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:01:44,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 12:01:44,802 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:01:44,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:01:44,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1300877915, now seen corresponding path program 1 times [2023-01-28 12:01:44,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:01:44,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458737401] [2023-01-28 12:01:44,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:44,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:01:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:44,960 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 12:01:44,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:01:44,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458737401] [2023-01-28 12:01:44,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458737401] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:01:44,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442047863] [2023-01-28 12:01:44,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:44,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:01:44,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:01:44,969 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 12:01:44,987 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 12:01:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:45,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 12:01:45,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:01:45,126 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 12:01:45,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:01:45,166 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 12:01:45,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442047863] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 12:01:45,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 12:01:45,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2023-01-28 12:01:45,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233852570] [2023-01-28 12:01:45,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:01:45,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 12:01:45,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:01:45,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 12:01:45,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 12:01:45,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 330 [2023-01-28 12:01:45,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 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 12:01:45,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:01:45,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 330 [2023-01-28 12:01:45,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:01:45,281 INFO L130 PetriNetUnfolder]: 70/141 cut-off events. [2023-01-28 12:01:45,281 INFO L131 PetriNetUnfolder]: For 94/108 co-relation queries the response was YES. [2023-01-28 12:01:45,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 141 events. 70/141 cut-off events. For 94/108 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 425 event pairs, 15 based on Foata normal form. 20/158 useless extension candidates. Maximal degree in co-relation 413. Up to 88 conditions per place. [2023-01-28 12:01:45,283 INFO L137 encePairwiseOnDemand]: 326/330 looper letters, 28 selfloop transitions, 4 changer transitions 4/37 dead transitions. [2023-01-28 12:01:45,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 37 transitions, 215 flow [2023-01-28 12:01:45,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 12:01:45,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 12:01:45,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 550 transitions. [2023-01-28 12:01:45,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-01-28 12:01:45,285 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 550 transitions. [2023-01-28 12:01:45,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 550 transitions. [2023-01-28 12:01:45,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:01:45,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 550 transitions. [2023-01-28 12:01:45,287 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 12:01:45,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 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 12:01:45,290 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 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 12:01:45,293 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 93 flow. Second operand 4 states and 550 transitions. [2023-01-28 12:01:45,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 37 transitions, 215 flow [2023-01-28 12:01:45,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 37 transitions, 206 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-28 12:01:45,295 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 114 flow [2023-01-28 12:01:45,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-01-28 12:01:45,296 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 9 predicate places. [2023-01-28 12:01:45,296 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 114 flow [2023-01-28 12:01:45,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 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 12:01:45,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:01:45,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:01:45,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 12:01:45,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:01:45,506 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:01:45,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:01:45,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1353157799, now seen corresponding path program 2 times [2023-01-28 12:01:45,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:01:45,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303128073] [2023-01-28 12:01:45,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:45,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:01:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:45,598 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 12:01:45,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:01:45,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303128073] [2023-01-28 12:01:45,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303128073] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:01:45,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:01:45,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 12:01:45,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990585744] [2023-01-28 12:01:45,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:01:45,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 12:01:45,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:01:45,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 12:01:45,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 12:01:45,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 330 [2023-01-28 12:01:45,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 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 12:01:45,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:01:45,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 330 [2023-01-28 12:01:45,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:01:45,670 INFO L130 PetriNetUnfolder]: 82/167 cut-off events. [2023-01-28 12:01:45,670 INFO L131 PetriNetUnfolder]: For 221/235 co-relation queries the response was YES. [2023-01-28 12:01:45,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 167 events. 82/167 cut-off events. For 221/235 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 571 event pairs, 29 based on Foata normal form. 18/182 useless extension candidates. Maximal degree in co-relation 530. Up to 108 conditions per place. [2023-01-28 12:01:45,672 INFO L137 encePairwiseOnDemand]: 326/330 looper letters, 31 selfloop transitions, 6 changer transitions 2/40 dead transitions. [2023-01-28 12:01:45,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 258 flow [2023-01-28 12:01:45,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 12:01:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 12:01:45,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 546 transitions. [2023-01-28 12:01:45,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41363636363636364 [2023-01-28 12:01:45,674 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 546 transitions. [2023-01-28 12:01:45,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 546 transitions. [2023-01-28 12:01:45,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:01:45,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 546 transitions. [2023-01-28 12:01:45,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.5) internal successors, (546), 4 states have internal predecessors, (546), 0 states have call successors, (0), 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 12:01:45,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 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 12:01:45,678 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 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 12:01:45,679 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 114 flow. Second operand 4 states and 546 transitions. [2023-01-28 12:01:45,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 258 flow [2023-01-28 12:01:45,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 251 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 12:01:45,681 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 147 flow [2023-01-28 12:01:45,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-01-28 12:01:45,682 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 13 predicate places. [2023-01-28 12:01:45,682 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 147 flow [2023-01-28 12:01:45,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 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 12:01:45,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:01:45,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:01:45,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 12:01:45,683 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:01:45,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:01:45,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1429573215, now seen corresponding path program 2 times [2023-01-28 12:01:45,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:01:45,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180354931] [2023-01-28 12:01:45,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:45,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:01:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:45,865 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 12:01:45,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:01:45,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180354931] [2023-01-28 12:01:45,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180354931] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:01:45,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342868895] [2023-01-28 12:01:45,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:01:45,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:01:45,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:01:45,870 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 12:01:45,873 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 12:01:45,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:01:45,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:01:45,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 12:01:45,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:01:46,027 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 12:01:46,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 12:01:46,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342868895] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:01:46,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 12:01:46,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2023-01-28 12:01:46,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814906043] [2023-01-28 12:01:46,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:01:46,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:01:46,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:01:46,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:01:46,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-28 12:01:46,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:01:46,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 129.2) internal successors, (646), 5 states have internal predecessors, (646), 0 states have call successors, (0), 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 12:01:46,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:01:46,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:01:46,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:01:46,129 INFO L130 PetriNetUnfolder]: 99/191 cut-off events. [2023-01-28 12:01:46,129 INFO L131 PetriNetUnfolder]: For 388/388 co-relation queries the response was YES. [2023-01-28 12:01:46,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 729 conditions, 191 events. 99/191 cut-off events. For 388/388 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 595 event pairs, 22 based on Foata normal form. 10/200 useless extension candidates. Maximal degree in co-relation 706. Up to 102 conditions per place. [2023-01-28 12:01:46,131 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 32 selfloop transitions, 9 changer transitions 8/49 dead transitions. [2023-01-28 12:01:46,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 49 transitions, 336 flow [2023-01-28 12:01:46,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 12:01:46,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 12:01:46,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 803 transitions. [2023-01-28 12:01:46,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2023-01-28 12:01:46,134 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 803 transitions. [2023-01-28 12:01:46,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 803 transitions. [2023-01-28 12:01:46,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:01:46,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 803 transitions. [2023-01-28 12:01:46,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.83333333333334) internal successors, (803), 6 states have internal predecessors, (803), 0 states have call successors, (0), 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 12:01:46,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 330.0) internal successors, (2310), 7 states have internal predecessors, (2310), 0 states have call successors, (0), 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 12:01:46,139 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 330.0) internal successors, (2310), 7 states have internal predecessors, (2310), 0 states have call successors, (0), 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 12:01:46,139 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 147 flow. Second operand 6 states and 803 transitions. [2023-01-28 12:01:46,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 49 transitions, 336 flow [2023-01-28 12:01:46,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 49 transitions, 315 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-28 12:01:46,143 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 173 flow [2023-01-28 12:01:46,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2023-01-28 12:01:46,143 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 19 predicate places. [2023-01-28 12:01:46,144 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 173 flow [2023-01-28 12:01:46,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.2) internal successors, (646), 5 states have internal predecessors, (646), 0 states have call successors, (0), 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 12:01:46,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:01:46,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:01:46,161 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 12:01:46,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-28 12:01:46,350 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:01:46,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:01:46,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1027272943, now seen corresponding path program 3 times [2023-01-28 12:01:46,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:01:46,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914098609] [2023-01-28 12:01:46,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:46,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:01:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:46,455 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 12:01:46,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:01:46,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914098609] [2023-01-28 12:01:46,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914098609] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:01:46,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802512781] [2023-01-28 12:01:46,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 12:01:46,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:01:46,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:01:46,461 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 12:01:46,464 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 12:01:46,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 12:01:46,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:01:46,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 12:01:46,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:01:46,610 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 12:01:46,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:01:46,663 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 12:01:46,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802512781] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:01:46,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:01:46,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-01-28 12:01:46,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072537394] [2023-01-28 12:01:46,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:01:46,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 12:01:46,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:01:46,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 12:01:46,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-01-28 12:01:46,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:01:46,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 173 flow. Second operand has 8 states, 8 states have (on average 128.875) internal successors, (1031), 8 states have internal predecessors, (1031), 0 states have call successors, (0), 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 12:01:46,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:01:46,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:01:46,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:01:46,806 INFO L130 PetriNetUnfolder]: 111/206 cut-off events. [2023-01-28 12:01:46,806 INFO L131 PetriNetUnfolder]: For 593/593 co-relation queries the response was YES. [2023-01-28 12:01:46,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 206 events. 111/206 cut-off events. For 593/593 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 666 event pairs, 21 based on Foata normal form. 16/221 useless extension candidates. Maximal degree in co-relation 800. Up to 112 conditions per place. [2023-01-28 12:01:46,808 INFO L137 encePairwiseOnDemand]: 325/330 looper letters, 37 selfloop transitions, 13 changer transitions 6/56 dead transitions. [2023-01-28 12:01:46,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 448 flow [2023-01-28 12:01:46,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 12:01:46,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 12:01:46,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 802 transitions. [2023-01-28 12:01:46,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40505050505050505 [2023-01-28 12:01:46,811 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 802 transitions. [2023-01-28 12:01:46,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 802 transitions. [2023-01-28 12:01:46,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:01:46,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 802 transitions. [2023-01-28 12:01:46,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.66666666666666) internal successors, (802), 6 states have internal predecessors, (802), 0 states have call successors, (0), 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 12:01:46,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 330.0) internal successors, (2310), 7 states have internal predecessors, (2310), 0 states have call successors, (0), 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 12:01:46,816 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 330.0) internal successors, (2310), 7 states have internal predecessors, (2310), 0 states have call successors, (0), 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 12:01:46,817 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 173 flow. Second operand 6 states and 802 transitions. [2023-01-28 12:01:46,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 448 flow [2023-01-28 12:01:46,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 56 transitions, 401 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-01-28 12:01:46,821 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 242 flow [2023-01-28 12:01:46,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2023-01-28 12:01:46,823 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 21 predicate places. [2023-01-28 12:01:46,823 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 242 flow [2023-01-28 12:01:46,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 128.875) internal successors, (1031), 8 states have internal predecessors, (1031), 0 states have call successors, (0), 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 12:01:46,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:01:46,824 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:01:46,832 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 12:01:47,029 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 12:01:47,030 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:01:47,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:01:47,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1687337279, now seen corresponding path program 1 times [2023-01-28 12:01:47,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:01:47,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381065363] [2023-01-28 12:01:47,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:47,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:01:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:48,024 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:01:48,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:01:48,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381065363] [2023-01-28 12:01:48,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381065363] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:01:48,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357843290] [2023-01-28 12:01:48,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:48,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:01:48,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:01:48,028 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 12:01:48,031 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 12:01:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:48,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 44 conjunts are in the unsatisfiable core [2023-01-28 12:01:48,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:01:48,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 12:01:48,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 12:01:48,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 12:01:48,487 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 12:01:48,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2023-01-28 12:01:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:01:48,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:01:48,807 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:01:48,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 106 [2023-01-28 12:01:48,875 INFO L321 Elim1Store]: treesize reduction 5, result has 92.3 percent of original size [2023-01-28 12:01:48,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 592 treesize of output 571 [2023-01-28 12:01:48,959 INFO L321 Elim1Store]: treesize reduction 8, result has 87.7 percent of original size [2023-01-28 12:01:48,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 133 treesize of output 133 [2023-01-28 12:01:49,171 INFO L321 Elim1Store]: treesize reduction 8, result has 87.7 percent of original size [2023-01-28 12:01:49,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 136 [2023-01-28 12:01:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:01:49,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357843290] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:01:49,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:01:49,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-01-28 12:01:49,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684866311] [2023-01-28 12:01:49,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:01:49,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 12:01:49,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:01:49,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 12:01:49,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=345, Unknown=1, NotChecked=0, Total=462 [2023-01-28 12:01:49,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 330 [2023-01-28 12:01:49,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 242 flow. Second operand has 22 states, 22 states have (on average 98.86363636363636) internal successors, (2175), 22 states have internal predecessors, (2175), 0 states have call successors, (0), 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 12:01:49,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:01:49,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 330 [2023-01-28 12:01:49,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:01:50,288 INFO L130 PetriNetUnfolder]: 269/486 cut-off events. [2023-01-28 12:01:50,288 INFO L131 PetriNetUnfolder]: For 1420/1534 co-relation queries the response was YES. [2023-01-28 12:01:50,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2041 conditions, 486 events. 269/486 cut-off events. For 1420/1534 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1932 event pairs, 40 based on Foata normal form. 80/555 useless extension candidates. Maximal degree in co-relation 1637. Up to 232 conditions per place. [2023-01-28 12:01:50,292 INFO L137 encePairwiseOnDemand]: 323/330 looper letters, 45 selfloop transitions, 23 changer transitions 51/124 dead transitions. [2023-01-28 12:01:50,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 124 transitions, 964 flow [2023-01-28 12:01:50,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 12:01:50,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 12:01:50,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1354 transitions. [2023-01-28 12:01:50,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3156177156177156 [2023-01-28 12:01:50,297 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1354 transitions. [2023-01-28 12:01:50,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1354 transitions. [2023-01-28 12:01:50,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:01:50,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1354 transitions. [2023-01-28 12:01:50,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 104.15384615384616) internal successors, (1354), 13 states have internal predecessors, (1354), 0 states have call successors, (0), 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 12:01:50,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 330.0) internal successors, (4620), 14 states have internal predecessors, (4620), 0 states have call successors, (0), 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 12:01:50,307 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 330.0) internal successors, (4620), 14 states have internal predecessors, (4620), 0 states have call successors, (0), 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 12:01:50,307 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 242 flow. Second operand 13 states and 1354 transitions. [2023-01-28 12:01:50,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 124 transitions, 964 flow [2023-01-28 12:01:50,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 124 transitions, 892 flow, removed 29 selfloop flow, removed 2 redundant places. [2023-01-28 12:01:50,312 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 407 flow [2023-01-28 12:01:50,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=407, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-01-28 12:01:50,313 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 37 predicate places. [2023-01-28 12:01:50,313 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 407 flow [2023-01-28 12:01:50,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 98.86363636363636) internal successors, (2175), 22 states have internal predecessors, (2175), 0 states have call successors, (0), 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 12:01:50,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:01:50,315 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:01:50,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 12:01:50,521 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 12:01:50,521 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:01:50,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:01:50,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1247683839, now seen corresponding path program 2 times [2023-01-28 12:01:50,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:01:50,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969758340] [2023-01-28 12:01:50,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:50,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:01:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:01:51,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:01:51,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969758340] [2023-01-28 12:01:51,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969758340] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:01:51,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993186491] [2023-01-28 12:01:51,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:01:51,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:01:51,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:01:51,369 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 12:01:51,372 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 12:01:51,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:01:51,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:01:51,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 43 conjunts are in the unsatisfiable core [2023-01-28 12:01:51,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:01:51,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 12:01:51,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 12:01:51,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 12:01:51,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 12:01:51,755 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 12:01:51,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2023-01-28 12:01:51,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:01:51,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:01:52,031 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:01:52,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 163 treesize of output 103 [2023-01-28 12:01:52,093 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:01:52,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 912 treesize of output 852 [2023-01-28 12:01:52,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:01:52,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 218 treesize of output 232 [2023-01-28 12:01:52,235 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:01:52,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 121 treesize of output 129 [2023-01-28 12:01:53,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:01:53,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993186491] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:01:53,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:01:53,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-01-28 12:01:53,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090058665] [2023-01-28 12:01:53,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:01:53,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 12:01:53,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:01:53,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 12:01:53,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=375, Unknown=7, NotChecked=0, Total=462 [2023-01-28 12:01:53,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 330 [2023-01-28 12:01:53,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 407 flow. Second operand has 22 states, 22 states have (on average 98.86363636363636) internal successors, (2175), 22 states have internal predecessors, (2175), 0 states have call successors, (0), 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 12:01:53,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:01:53,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 330 [2023-01-28 12:01:53,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:01:53,877 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (and (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (<= .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base|) (forall ((v_ArrVal_216 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_216) c_~f~0.base))) (let ((.cse2 (select .cse1 (+ (* c_~x2~0 4) c_~f~0.offset)))) (or (= (select .cse1 (+ c_~f~0.offset (* (select (select |c_#memory_int| c_~f~0.base) (+ (* c_~x1~0 4) c_~f~0.offset)) 4))) (select .cse1 (+ c_~f~0.offset (* .cse2 4)))) (< .cse2 0) (<= c_~size~0 .cse2))))) (= c_~x2~0 0) (= c_~x1~0 0) (= 0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (<= c_~size~0 |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (<= .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base|) (= c_~size~0 |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (= |c_ULTIMATE.start_create_fresh_int_array_~i~2#1| 0))) is different from false [2023-01-28 12:01:54,206 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ (* c_~x1~0 4) c_~f~0.offset)) (.cse3 (+ (* c_~x2~0 4) c_~f~0.offset))) (and (forall ((v_ArrVal_216 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_216) c_~f~0.base))) (let ((.cse2 (select .cse0 .cse3))) (or (= (select .cse0 .cse1) (select .cse0 (+ c_~f~0.offset (* .cse2 4)))) (< .cse2 0) (<= c_~size~0 .cse2))))) (let ((.cse5 (select |c_#memory_int| c_~f~0.base))) (let ((.cse4 (select .cse5 .cse3))) (or (< .cse4 0) (= (select .cse5 .cse1) (select .cse5 (+ (* .cse4 4) c_~f~0.offset))) (<= c_~size~0 .cse4)))))) is different from false [2023-01-28 12:01:54,583 INFO L130 PetriNetUnfolder]: 257/482 cut-off events. [2023-01-28 12:01:54,583 INFO L131 PetriNetUnfolder]: For 1798/1875 co-relation queries the response was YES. [2023-01-28 12:01:54,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2142 conditions, 482 events. 257/482 cut-off events. For 1798/1875 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1892 event pairs, 22 based on Foata normal form. 62/532 useless extension candidates. Maximal degree in co-relation 2096. Up to 211 conditions per place. [2023-01-28 12:01:54,588 INFO L137 encePairwiseOnDemand]: 323/330 looper letters, 48 selfloop transitions, 45 changer transitions 23/121 dead transitions. [2023-01-28 12:01:54,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 121 transitions, 1082 flow [2023-01-28 12:01:54,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 12:01:54,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 12:01:54,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1640 transitions. [2023-01-28 12:01:54,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2023-01-28 12:01:54,593 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1640 transitions. [2023-01-28 12:01:54,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1640 transitions. [2023-01-28 12:01:54,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:01:54,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1640 transitions. [2023-01-28 12:01:54,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 102.5) internal successors, (1640), 16 states have internal predecessors, (1640), 0 states have call successors, (0), 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 12:01:54,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 330.0) internal successors, (5610), 17 states have internal predecessors, (5610), 0 states have call successors, (0), 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 12:01:54,604 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 330.0) internal successors, (5610), 17 states have internal predecessors, (5610), 0 states have call successors, (0), 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 12:01:54,604 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 407 flow. Second operand 16 states and 1640 transitions. [2023-01-28 12:01:54,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 121 transitions, 1082 flow [2023-01-28 12:01:54,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 121 transitions, 1000 flow, removed 32 selfloop flow, removed 5 redundant places. [2023-01-28 12:01:54,610 INFO L231 Difference]: Finished difference. Result has 71 places, 71 transitions, 698 flow [2023-01-28 12:01:54,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=698, PETRI_PLACES=71, PETRI_TRANSITIONS=71} [2023-01-28 12:01:54,611 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 50 predicate places. [2023-01-28 12:01:54,611 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 71 transitions, 698 flow [2023-01-28 12:01:54,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 98.86363636363636) internal successors, (2175), 22 states have internal predecessors, (2175), 0 states have call successors, (0), 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 12:01:54,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:01:54,612 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:01:54,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 12:01:54,818 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 12:01:54,819 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:01:54,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:01:54,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1973804990, now seen corresponding path program 3 times [2023-01-28 12:01:54,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:01:54,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271085933] [2023-01-28 12:01:54,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:54,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:01:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:01:55,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:01:55,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271085933] [2023-01-28 12:01:55,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271085933] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:01:55,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408945318] [2023-01-28 12:01:55,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 12:01:55,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:01:55,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:01:55,737 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 12:01:55,739 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 12:01:55,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 12:01:55,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:01:55,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2023-01-28 12:01:55,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:01:56,024 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:01:56,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 20 [2023-01-28 12:01:56,032 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:01:56,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:01:56,121 INFO L321 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-01-28 12:01:56,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-01-28 12:01:56,154 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:01:56,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408945318] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:01:56,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:01:56,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 3] total 14 [2023-01-28 12:01:56,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988650351] [2023-01-28 12:01:56,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:01:56,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 12:01:56,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:01:56,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 12:01:56,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-01-28 12:01:56,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 330 [2023-01-28 12:01:56,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 71 transitions, 698 flow. Second operand has 16 states, 16 states have (on average 99.4375) internal successors, (1591), 16 states have internal predecessors, (1591), 0 states have call successors, (0), 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 12:01:56,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:01:56,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 330 [2023-01-28 12:01:56,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:01:56,627 INFO L130 PetriNetUnfolder]: 314/576 cut-off events. [2023-01-28 12:01:56,627 INFO L131 PetriNetUnfolder]: For 2583/2672 co-relation queries the response was YES. [2023-01-28 12:01:56,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2802 conditions, 576 events. 314/576 cut-off events. For 2583/2672 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2365 event pairs, 66 based on Foata normal form. 78/645 useless extension candidates. Maximal degree in co-relation 2742. Up to 376 conditions per place. [2023-01-28 12:01:56,632 INFO L137 encePairwiseOnDemand]: 323/330 looper letters, 80 selfloop transitions, 44 changer transitions 1/130 dead transitions. [2023-01-28 12:01:56,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 130 transitions, 1310 flow [2023-01-28 12:01:56,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 12:01:56,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 12:01:56,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1441 transitions. [2023-01-28 12:01:56,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3119047619047619 [2023-01-28 12:01:56,636 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1441 transitions. [2023-01-28 12:01:56,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1441 transitions. [2023-01-28 12:01:56,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:01:56,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1441 transitions. [2023-01-28 12:01:56,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 102.92857142857143) internal successors, (1441), 14 states have internal predecessors, (1441), 0 states have call successors, (0), 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 12:01:56,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 330.0) internal successors, (4950), 15 states have internal predecessors, (4950), 0 states have call successors, (0), 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 12:01:56,645 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 330.0) internal successors, (4950), 15 states have internal predecessors, (4950), 0 states have call successors, (0), 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 12:01:56,645 INFO L175 Difference]: Start difference. First operand has 71 places, 71 transitions, 698 flow. Second operand 14 states and 1441 transitions. [2023-01-28 12:01:56,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 130 transitions, 1310 flow [2023-01-28 12:01:56,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 130 transitions, 1163 flow, removed 60 selfloop flow, removed 9 redundant places. [2023-01-28 12:01:56,653 INFO L231 Difference]: Finished difference. Result has 73 places, 90 transitions, 903 flow [2023-01-28 12:01:56,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=903, PETRI_PLACES=73, PETRI_TRANSITIONS=90} [2023-01-28 12:01:56,653 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 52 predicate places. [2023-01-28 12:01:56,653 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 90 transitions, 903 flow [2023-01-28 12:01:56,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 99.4375) internal successors, (1591), 16 states have internal predecessors, (1591), 0 states have call successors, (0), 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 12:01:56,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:01:56,654 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:01:56,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 12:01:56,860 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 12:01:56,861 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:01:56,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:01:56,861 INFO L85 PathProgramCache]: Analyzing trace with hash -293986682, now seen corresponding path program 4 times [2023-01-28 12:01:56,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:01:56,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949139181] [2023-01-28 12:01:56,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:56,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:01:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:01:57,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:01:57,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949139181] [2023-01-28 12:01:57,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949139181] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:01:57,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009677924] [2023-01-28 12:01:57,847 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 12:01:57,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:01:57,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:01:57,849 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 12:01:57,857 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 12:01:57,938 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 12:01:57,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:01:57,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-28 12:01:57,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:01:58,067 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:01:58,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 20 [2023-01-28 12:01:58,074 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:01:58,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:01:58,151 INFO L321 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-01-28 12:01:58,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-01-28 12:01:58,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:01:58,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009677924] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:01:58,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:01:58,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 3] total 15 [2023-01-28 12:01:58,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807535617] [2023-01-28 12:01:58,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:01:58,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 12:01:58,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:01:58,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 12:01:58,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-01-28 12:01:58,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 330 [2023-01-28 12:01:58,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 90 transitions, 903 flow. Second operand has 17 states, 17 states have (on average 99.3529411764706) internal successors, (1689), 17 states have internal predecessors, (1689), 0 states have call successors, (0), 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 12:01:58,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:01:58,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 330 [2023-01-28 12:01:58,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:01:58,709 INFO L130 PetriNetUnfolder]: 402/735 cut-off events. [2023-01-28 12:01:58,710 INFO L131 PetriNetUnfolder]: For 2883/2965 co-relation queries the response was YES. [2023-01-28 12:01:58,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3484 conditions, 735 events. 402/735 cut-off events. For 2883/2965 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3285 event pairs, 89 based on Foata normal form. 63/789 useless extension candidates. Maximal degree in co-relation 3175. Up to 561 conditions per place. [2023-01-28 12:01:58,715 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 99 selfloop transitions, 37 changer transitions 1/142 dead transitions. [2023-01-28 12:01:58,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 142 transitions, 1488 flow [2023-01-28 12:01:58,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 12:01:58,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 12:01:58,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1431 transitions. [2023-01-28 12:01:58,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30974025974025976 [2023-01-28 12:01:58,720 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1431 transitions. [2023-01-28 12:01:58,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1431 transitions. [2023-01-28 12:01:58,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:01:58,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1431 transitions. [2023-01-28 12:01:58,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 102.21428571428571) internal successors, (1431), 14 states have internal predecessors, (1431), 0 states have call successors, (0), 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 12:01:58,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 330.0) internal successors, (4950), 15 states have internal predecessors, (4950), 0 states have call successors, (0), 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 12:01:58,728 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 330.0) internal successors, (4950), 15 states have internal predecessors, (4950), 0 states have call successors, (0), 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 12:01:58,728 INFO L175 Difference]: Start difference. First operand has 73 places, 90 transitions, 903 flow. Second operand 14 states and 1431 transitions. [2023-01-28 12:01:58,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 142 transitions, 1488 flow [2023-01-28 12:01:58,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 142 transitions, 1404 flow, removed 36 selfloop flow, removed 3 redundant places. [2023-01-28 12:01:58,738 INFO L231 Difference]: Finished difference. Result has 84 places, 108 transitions, 1102 flow [2023-01-28 12:01:58,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1102, PETRI_PLACES=84, PETRI_TRANSITIONS=108} [2023-01-28 12:01:58,739 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 63 predicate places. [2023-01-28 12:01:58,739 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 108 transitions, 1102 flow [2023-01-28 12:01:58,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 99.3529411764706) internal successors, (1689), 17 states have internal predecessors, (1689), 0 states have call successors, (0), 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 12:01:58,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:01:58,752 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:01:58,760 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 12:01:58,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:01:58,952 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:01:58,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:01:58,953 INFO L85 PathProgramCache]: Analyzing trace with hash -720202900, now seen corresponding path program 5 times [2023-01-28 12:01:58,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:01:58,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447315719] [2023-01-28 12:01:58,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:58,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:01:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:59,760 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:01:59,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:01:59,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447315719] [2023-01-28 12:01:59,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447315719] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:01:59,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053098061] [2023-01-28 12:01:59,761 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 12:01:59,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:01:59,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:01:59,762 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 12:01:59,799 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 12:01:59,875 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:01:59,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:01:59,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 12:01:59,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:02:00,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 12:02:00,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2023-01-28 12:02:00,065 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 12:02:00,081 INFO L321 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2023-01-28 12:02:00,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 33 [2023-01-28 12:02:00,091 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:02:00,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:02:00,222 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:02:00,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 108 [2023-01-28 12:02:00,233 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:02:00,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 28 [2023-01-28 12:02:00,375 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:00,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053098061] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:02:00,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:02:00,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 19 [2023-01-28 12:02:00,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262477968] [2023-01-28 12:02:00,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:02:00,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 12:02:00,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:02:00,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 12:02:00,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=357, Unknown=2, NotChecked=0, Total=420 [2023-01-28 12:02:00,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 330 [2023-01-28 12:02:00,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 108 transitions, 1102 flow. Second operand has 21 states, 21 states have (on average 98.80952380952381) internal successors, (2075), 21 states have internal predecessors, (2075), 0 states have call successors, (0), 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 12:02:00,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:02:00,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 330 [2023-01-28 12:02:00,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:02:01,097 INFO L130 PetriNetUnfolder]: 554/1015 cut-off events. [2023-01-28 12:02:01,097 INFO L131 PetriNetUnfolder]: For 3670/3783 co-relation queries the response was YES. [2023-01-28 12:02:01,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4661 conditions, 1015 events. 554/1015 cut-off events. For 3670/3783 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4877 event pairs, 85 based on Foata normal form. 107/1113 useless extension candidates. Maximal degree in co-relation 4398. Up to 645 conditions per place. [2023-01-28 12:02:01,105 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 112 selfloop transitions, 59 changer transitions 2/178 dead transitions. [2023-01-28 12:02:01,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 178 transitions, 1882 flow [2023-01-28 12:02:01,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 12:02:01,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 12:02:01,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1547 transitions. [2023-01-28 12:02:01,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31252525252525254 [2023-01-28 12:02:01,111 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1547 transitions. [2023-01-28 12:02:01,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1547 transitions. [2023-01-28 12:02:01,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:02:01,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1547 transitions. [2023-01-28 12:02:01,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 103.13333333333334) internal successors, (1547), 15 states have internal predecessors, (1547), 0 states have call successors, (0), 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 12:02:01,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 330.0) internal successors, (5280), 16 states have internal predecessors, (5280), 0 states have call successors, (0), 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 12:02:01,121 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 330.0) internal successors, (5280), 16 states have internal predecessors, (5280), 0 states have call successors, (0), 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 12:02:01,122 INFO L175 Difference]: Start difference. First operand has 84 places, 108 transitions, 1102 flow. Second operand 15 states and 1547 transitions. [2023-01-28 12:02:01,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 178 transitions, 1882 flow [2023-01-28 12:02:01,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 178 transitions, 1769 flow, removed 45 selfloop flow, removed 5 redundant places. [2023-01-28 12:02:01,136 INFO L231 Difference]: Finished difference. Result has 98 places, 132 transitions, 1442 flow [2023-01-28 12:02:01,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1442, PETRI_PLACES=98, PETRI_TRANSITIONS=132} [2023-01-28 12:02:01,137 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 77 predicate places. [2023-01-28 12:02:01,137 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 132 transitions, 1442 flow [2023-01-28 12:02:01,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 98.80952380952381) internal successors, (2075), 21 states have internal predecessors, (2075), 0 states have call successors, (0), 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 12:02:01,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:02:01,138 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:02:01,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 12:02:01,343 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,SelfDestructingSolverStorable11 [2023-01-28 12:02:01,343 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:02:01,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:02:01,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1967274485, now seen corresponding path program 6 times [2023-01-28 12:02:01,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:02:01,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588033556] [2023-01-28 12:02:01,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:02:01,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:02:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:02:01,606 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:01,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:02:01,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588033556] [2023-01-28 12:02:01,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588033556] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:02:01,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375993199] [2023-01-28 12:02:01,607 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 12:02:01,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:02:01,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:02:01,609 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 12:02:01,637 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 12:02:01,741 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 12:02:01,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:02:01,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:02:01,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:02:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:01,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:02:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:01,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375993199] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:02:01,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:02:01,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2023-01-28 12:02:01,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800806653] [2023-01-28 12:02:01,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:02:01,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 12:02:01,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:02:01,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 12:02:01,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-01-28 12:02:01,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:02:01,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 132 transitions, 1442 flow. Second operand has 17 states, 17 states have (on average 128.23529411764707) internal successors, (2180), 17 states have internal predecessors, (2180), 0 states have call successors, (0), 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 12:02:01,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:02:01,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:02:01,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:02:05,293 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 12:02:06,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 12:02:07,146 INFO L130 PetriNetUnfolder]: 944/1748 cut-off events. [2023-01-28 12:02:07,146 INFO L131 PetriNetUnfolder]: For 7392/7392 co-relation queries the response was YES. [2023-01-28 12:02:07,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8130 conditions, 1748 events. 944/1748 cut-off events. For 7392/7392 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9839 event pairs, 97 based on Foata normal form. 24/1771 useless extension candidates. Maximal degree in co-relation 7499. Up to 617 conditions per place. [2023-01-28 12:02:07,163 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 177 selfloop transitions, 155 changer transitions 13/345 dead transitions. [2023-01-28 12:02:07,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 345 transitions, 4040 flow [2023-01-28 12:02:07,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-01-28 12:02:07,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-01-28 12:02:07,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3288 transitions. [2023-01-28 12:02:07,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39854545454545454 [2023-01-28 12:02:07,170 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3288 transitions. [2023-01-28 12:02:07,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3288 transitions. [2023-01-28 12:02:07,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:02:07,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3288 transitions. [2023-01-28 12:02:07,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 131.52) internal successors, (3288), 25 states have internal predecessors, (3288), 0 states have call successors, (0), 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 12:02:07,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 330.0) internal successors, (8580), 26 states have internal predecessors, (8580), 0 states have call successors, (0), 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 12:02:07,189 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 330.0) internal successors, (8580), 26 states have internal predecessors, (8580), 0 states have call successors, (0), 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 12:02:07,189 INFO L175 Difference]: Start difference. First operand has 98 places, 132 transitions, 1442 flow. Second operand 25 states and 3288 transitions. [2023-01-28 12:02:07,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 345 transitions, 4040 flow [2023-01-28 12:02:07,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 345 transitions, 3799 flow, removed 109 selfloop flow, removed 5 redundant places. [2023-01-28 12:02:07,218 INFO L231 Difference]: Finished difference. Result has 127 places, 252 transitions, 3181 flow [2023-01-28 12:02:07,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3181, PETRI_PLACES=127, PETRI_TRANSITIONS=252} [2023-01-28 12:02:07,219 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 106 predicate places. [2023-01-28 12:02:07,219 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 252 transitions, 3181 flow [2023-01-28 12:02:07,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 128.23529411764707) internal successors, (2180), 17 states have internal predecessors, (2180), 0 states have call successors, (0), 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 12:02:07,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:02:07,220 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:02:07,228 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 12:02:07,427 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,SelfDestructingSolverStorable12 [2023-01-28 12:02:07,427 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:02:07,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:02:07,428 INFO L85 PathProgramCache]: Analyzing trace with hash -576327455, now seen corresponding path program 7 times [2023-01-28 12:02:07,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:02:07,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033765164] [2023-01-28 12:02:07,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:02:07,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:02:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:02:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:07,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:02:07,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033765164] [2023-01-28 12:02:07,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033765164] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:02:07,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964561153] [2023-01-28 12:02:07,616 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 12:02:07,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:02:07,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:02:07,617 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 12:02:07,619 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 12:02:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:02:07,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:02:07,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:02:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:07,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:02:07,869 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:07,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964561153] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:02:07,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:02:07,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2023-01-28 12:02:07,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639860715] [2023-01-28 12:02:07,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:02:07,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 12:02:07,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:02:07,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 12:02:07,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-01-28 12:02:07,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:02:07,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 252 transitions, 3181 flow. Second operand has 14 states, 14 states have (on average 128.14285714285714) internal successors, (1794), 14 states have internal predecessors, (1794), 0 states have call successors, (0), 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 12:02:07,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:02:07,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:02:07,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:02:08,792 INFO L130 PetriNetUnfolder]: 1061/2049 cut-off events. [2023-01-28 12:02:08,793 INFO L131 PetriNetUnfolder]: For 13255/13255 co-relation queries the response was YES. [2023-01-28 12:02:08,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11233 conditions, 2049 events. 1061/2049 cut-off events. For 13255/13255 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12560 event pairs, 76 based on Foata normal form. 36/2084 useless extension candidates. Maximal degree in co-relation 10683. Up to 721 conditions per place. [2023-01-28 12:02:08,813 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 211 selfloop transitions, 163 changer transitions 22/396 dead transitions. [2023-01-28 12:02:08,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 396 transitions, 5176 flow [2023-01-28 12:02:08,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 12:02:08,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 12:02:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2770 transitions. [2023-01-28 12:02:08,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3997113997113997 [2023-01-28 12:02:08,869 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2770 transitions. [2023-01-28 12:02:08,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2770 transitions. [2023-01-28 12:02:08,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:02:08,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2770 transitions. [2023-01-28 12:02:08,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 131.9047619047619) internal successors, (2770), 21 states have internal predecessors, (2770), 0 states have call successors, (0), 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 12:02:08,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 330.0) internal successors, (7260), 22 states have internal predecessors, (7260), 0 states have call successors, (0), 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 12:02:08,884 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 330.0) internal successors, (7260), 22 states have internal predecessors, (7260), 0 states have call successors, (0), 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 12:02:08,884 INFO L175 Difference]: Start difference. First operand has 127 places, 252 transitions, 3181 flow. Second operand 21 states and 2770 transitions. [2023-01-28 12:02:08,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 396 transitions, 5176 flow [2023-01-28 12:02:08,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 396 transitions, 4764 flow, removed 182 selfloop flow, removed 1 redundant places. [2023-01-28 12:02:08,943 INFO L231 Difference]: Finished difference. Result has 154 places, 293 transitions, 3844 flow [2023-01-28 12:02:08,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=2783, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3844, PETRI_PLACES=154, PETRI_TRANSITIONS=293} [2023-01-28 12:02:08,945 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 133 predicate places. [2023-01-28 12:02:08,945 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 293 transitions, 3844 flow [2023-01-28 12:02:08,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 128.14285714285714) internal successors, (1794), 14 states have internal predecessors, (1794), 0 states have call successors, (0), 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 12:02:08,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:02:08,946 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:02:08,955 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 12:02:09,152 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,SelfDestructingSolverStorable13 [2023-01-28 12:02:09,153 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:02:09,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:02:09,153 INFO L85 PathProgramCache]: Analyzing trace with hash -282767609, now seen corresponding path program 8 times [2023-01-28 12:02:09,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:02:09,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609353499] [2023-01-28 12:02:09,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:02:09,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:02:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:02:09,397 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:09,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:02:09,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609353499] [2023-01-28 12:02:09,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609353499] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:02:09,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067903623] [2023-01-28 12:02:09,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:02:09,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:02:09,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:02:09,399 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 12:02:09,402 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 12:02:09,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:02:09,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:02:09,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:02:09,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:02:09,591 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:09,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:02:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:09,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067903623] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:02:09,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:02:09,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-01-28 12:02:09,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569316726] [2023-01-28 12:02:09,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:02:09,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 12:02:09,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:02:09,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 12:02:09,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-01-28 12:02:09,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:02:09,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 293 transitions, 3844 flow. Second operand has 19 states, 19 states have (on average 127.78947368421052) internal successors, (2428), 19 states have internal predecessors, (2428), 0 states have call successors, (0), 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 12:02:09,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:02:09,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:02:09,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:02:11,111 INFO L130 PetriNetUnfolder]: 942/1813 cut-off events. [2023-01-28 12:02:11,111 INFO L131 PetriNetUnfolder]: For 15351/15351 co-relation queries the response was YES. [2023-01-28 12:02:11,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11152 conditions, 1813 events. 942/1813 cut-off events. For 15351/15351 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10705 event pairs, 174 based on Foata normal form. 118/1930 useless extension candidates. Maximal degree in co-relation 10891. Up to 732 conditions per place. [2023-01-28 12:02:11,135 INFO L137 encePairwiseOnDemand]: 323/330 looper letters, 158 selfloop transitions, 240 changer transitions 8/406 dead transitions. [2023-01-28 12:02:11,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 406 transitions, 5842 flow [2023-01-28 12:02:11,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 12:02:11,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 12:02:11,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2908 transitions. [2023-01-28 12:02:11,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40055096418732783 [2023-01-28 12:02:11,141 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2908 transitions. [2023-01-28 12:02:11,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2908 transitions. [2023-01-28 12:02:11,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:02:11,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2908 transitions. [2023-01-28 12:02:11,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.1818181818182) internal successors, (2908), 22 states have internal predecessors, (2908), 0 states have call successors, (0), 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 12:02:11,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 330.0) internal successors, (7590), 23 states have internal predecessors, (7590), 0 states have call successors, (0), 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 12:02:11,154 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 330.0) internal successors, (7590), 23 states have internal predecessors, (7590), 0 states have call successors, (0), 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 12:02:11,154 INFO L175 Difference]: Start difference. First operand has 154 places, 293 transitions, 3844 flow. Second operand 22 states and 2908 transitions. [2023-01-28 12:02:11,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 406 transitions, 5842 flow [2023-01-28 12:02:11,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 406 transitions, 5071 flow, removed 328 selfloop flow, removed 11 redundant places. [2023-01-28 12:02:11,257 INFO L231 Difference]: Finished difference. Result has 163 places, 337 transitions, 4651 flow [2023-01-28 12:02:11,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4651, PETRI_PLACES=163, PETRI_TRANSITIONS=337} [2023-01-28 12:02:11,258 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 142 predicate places. [2023-01-28 12:02:11,258 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 337 transitions, 4651 flow [2023-01-28 12:02:11,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 127.78947368421052) internal successors, (2428), 19 states have internal predecessors, (2428), 0 states have call successors, (0), 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 12:02:11,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:02:11,259 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:02:11,267 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 12:02:11,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 12:02:11,465 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:02:11,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:02:11,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1636053091, now seen corresponding path program 9 times [2023-01-28 12:02:11,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:02:11,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489121411] [2023-01-28 12:02:11,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:02:11,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:02:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:02:11,719 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:11,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:02:11,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489121411] [2023-01-28 12:02:11,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489121411] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:02:11,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351715702] [2023-01-28 12:02:11,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 12:02:11,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:02:11,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:02:11,725 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 12:02:11,728 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 12:02:11,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 12:02:11,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:02:11,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:02:11,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:02:11,910 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:11,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:02:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:12,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351715702] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:02:12,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:02:12,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-01-28 12:02:12,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876708036] [2023-01-28 12:02:12,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:02:12,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 12:02:12,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:02:12,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 12:02:12,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-01-28 12:02:12,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:02:12,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 337 transitions, 4651 flow. Second operand has 18 states, 18 states have (on average 127.88888888888889) internal successors, (2302), 18 states have internal predecessors, (2302), 0 states have call successors, (0), 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 12:02:12,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:02:12,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:02:12,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:02:13,436 INFO L130 PetriNetUnfolder]: 916/1865 cut-off events. [2023-01-28 12:02:13,436 INFO L131 PetriNetUnfolder]: For 10626/10626 co-relation queries the response was YES. [2023-01-28 12:02:13,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10840 conditions, 1865 events. 916/1865 cut-off events. For 10626/10626 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11701 event pairs, 81 based on Foata normal form. 36/1900 useless extension candidates. Maximal degree in co-relation 10356. Up to 479 conditions per place. [2023-01-28 12:02:13,455 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 163 selfloop transitions, 247 changer transitions 14/424 dead transitions. [2023-01-28 12:02:13,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 424 transitions, 5967 flow [2023-01-28 12:02:13,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-01-28 12:02:13,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-01-28 12:02:13,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3927 transitions. [2023-01-28 12:02:13,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2023-01-28 12:02:13,461 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3927 transitions. [2023-01-28 12:02:13,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3927 transitions. [2023-01-28 12:02:13,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:02:13,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3927 transitions. [2023-01-28 12:02:13,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 130.9) internal successors, (3927), 30 states have internal predecessors, (3927), 0 states have call successors, (0), 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 12:02:13,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 330.0) internal successors, (10230), 31 states have internal predecessors, (10230), 0 states have call successors, (0), 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 12:02:13,481 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 330.0) internal successors, (10230), 31 states have internal predecessors, (10230), 0 states have call successors, (0), 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 12:02:13,481 INFO L175 Difference]: Start difference. First operand has 163 places, 337 transitions, 4651 flow. Second operand 30 states and 3927 transitions. [2023-01-28 12:02:13,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 424 transitions, 5967 flow [2023-01-28 12:02:13,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 424 transitions, 5641 flow, removed 127 selfloop flow, removed 4 redundant places. [2023-01-28 12:02:13,549 INFO L231 Difference]: Finished difference. Result has 191 places, 342 transitions, 4933 flow [2023-01-28 12:02:13,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=4085, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4933, PETRI_PLACES=191, PETRI_TRANSITIONS=342} [2023-01-28 12:02:13,550 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 170 predicate places. [2023-01-28 12:02:13,550 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 342 transitions, 4933 flow [2023-01-28 12:02:13,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 127.88888888888889) internal successors, (2302), 18 states have internal predecessors, (2302), 0 states have call successors, (0), 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 12:02:13,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:02:13,551 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:02:13,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 12:02:13,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 12:02:13,757 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:02:13,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:02:13,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1487088225, now seen corresponding path program 10 times [2023-01-28 12:02:13,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:02:13,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574456811] [2023-01-28 12:02:13,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:02:13,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:02:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:02:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:13,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:02:13,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574456811] [2023-01-28 12:02:13,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574456811] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:02:13,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808315272] [2023-01-28 12:02:13,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 12:02:13,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:02:13,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:02:13,941 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 12:02:13,944 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 12:02:14,069 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 12:02:14,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:02:14,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:02:14,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:02:14,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:14,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:02:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:14,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808315272] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:02:14,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:02:14,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-01-28 12:02:14,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516648277] [2023-01-28 12:02:14,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:02:14,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 12:02:14,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:02:14,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 12:02:14,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-01-28 12:02:14,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:02:14,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 342 transitions, 4933 flow. Second operand has 17 states, 17 states have (on average 127.76470588235294) internal successors, (2172), 17 states have internal predecessors, (2172), 0 states have call successors, (0), 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 12:02:14,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:02:14,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:02:14,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:02:15,833 INFO L130 PetriNetUnfolder]: 1019/2043 cut-off events. [2023-01-28 12:02:15,833 INFO L131 PetriNetUnfolder]: For 13464/13464 co-relation queries the response was YES. [2023-01-28 12:02:15,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12889 conditions, 2043 events. 1019/2043 cut-off events. For 13464/13464 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 12916 event pairs, 245 based on Foata normal form. 20/2062 useless extension candidates. Maximal degree in co-relation 12383. Up to 1114 conditions per place. [2023-01-28 12:02:15,852 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 265 selfloop transitions, 213 changer transitions 3/481 dead transitions. [2023-01-28 12:02:15,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 481 transitions, 7383 flow [2023-01-28 12:02:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-28 12:02:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-01-28 12:02:15,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3805 transitions. [2023-01-28 12:02:15,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39759665621734586 [2023-01-28 12:02:15,858 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3805 transitions. [2023-01-28 12:02:15,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3805 transitions. [2023-01-28 12:02:15,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:02:15,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3805 transitions. [2023-01-28 12:02:15,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 131.20689655172413) internal successors, (3805), 29 states have internal predecessors, (3805), 0 states have call successors, (0), 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 12:02:15,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 330.0) internal successors, (9900), 30 states have internal predecessors, (9900), 0 states have call successors, (0), 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 12:02:15,871 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 330.0) internal successors, (9900), 30 states have internal predecessors, (9900), 0 states have call successors, (0), 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 12:02:15,871 INFO L175 Difference]: Start difference. First operand has 191 places, 342 transitions, 4933 flow. Second operand 29 states and 3805 transitions. [2023-01-28 12:02:15,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 481 transitions, 7383 flow [2023-01-28 12:02:15,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 481 transitions, 6912 flow, removed 71 selfloop flow, removed 13 redundant places. [2023-01-28 12:02:15,966 INFO L231 Difference]: Finished difference. Result has 217 places, 404 transitions, 6132 flow [2023-01-28 12:02:15,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=4553, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6132, PETRI_PLACES=217, PETRI_TRANSITIONS=404} [2023-01-28 12:02:15,967 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 196 predicate places. [2023-01-28 12:02:15,967 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 404 transitions, 6132 flow [2023-01-28 12:02:15,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 127.76470588235294) internal successors, (2172), 17 states have internal predecessors, (2172), 0 states have call successors, (0), 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 12:02:15,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:02:15,968 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:02:15,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-01-28 12:02:16,174 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,SelfDestructingSolverStorable16 [2023-01-28 12:02:16,174 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:02:16,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:02:16,174 INFO L85 PathProgramCache]: Analyzing trace with hash 2070152813, now seen corresponding path program 11 times [2023-01-28 12:02:16,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:02:16,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677795517] [2023-01-28 12:02:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:02:16,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:02:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:02:16,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:16,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:02:16,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677795517] [2023-01-28 12:02:16,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677795517] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:02:16,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229689098] [2023-01-28 12:02:16,435 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 12:02:16,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:02:16,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:02:16,436 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 12:02:16,439 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 12:02:16,563 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 12:02:16,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:02:16,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:02:16,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:02:16,673 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:16,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:02:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:16,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229689098] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:02:16,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:02:16,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-01-28 12:02:16,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287389811] [2023-01-28 12:02:16,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:02:16,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 12:02:16,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:02:16,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 12:02:16,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-01-28 12:02:16,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:02:16,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 404 transitions, 6132 flow. Second operand has 18 states, 18 states have (on average 127.72222222222223) internal successors, (2299), 18 states have internal predecessors, (2299), 0 states have call successors, (0), 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 12:02:16,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:02:16,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:02:16,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:02:18,518 INFO L130 PetriNetUnfolder]: 1133/2279 cut-off events. [2023-01-28 12:02:18,518 INFO L131 PetriNetUnfolder]: For 17769/17769 co-relation queries the response was YES. [2023-01-28 12:02:18,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15257 conditions, 2279 events. 1133/2279 cut-off events. For 17769/17769 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 14803 event pairs, 219 based on Foata normal form. 12/2290 useless extension candidates. Maximal degree in co-relation 14715. Up to 990 conditions per place. [2023-01-28 12:02:18,546 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 248 selfloop transitions, 282 changer transitions 3/533 dead transitions. [2023-01-28 12:02:18,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 533 transitions, 8530 flow [2023-01-28 12:02:18,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 12:02:18,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 12:02:18,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3175 transitions. [2023-01-28 12:02:18,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4008838383838384 [2023-01-28 12:02:18,552 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3175 transitions. [2023-01-28 12:02:18,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3175 transitions. [2023-01-28 12:02:18,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:02:18,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3175 transitions. [2023-01-28 12:02:18,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.29166666666666) internal successors, (3175), 24 states have internal predecessors, (3175), 0 states have call successors, (0), 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 12:02:18,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 330.0) internal successors, (8250), 25 states have internal predecessors, (8250), 0 states have call successors, (0), 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 12:02:18,564 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 330.0) internal successors, (8250), 25 states have internal predecessors, (8250), 0 states have call successors, (0), 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 12:02:18,564 INFO L175 Difference]: Start difference. First operand has 217 places, 404 transitions, 6132 flow. Second operand 24 states and 3175 transitions. [2023-01-28 12:02:18,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 533 transitions, 8530 flow [2023-01-28 12:02:18,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 533 transitions, 8135 flow, removed 117 selfloop flow, removed 8 redundant places. [2023-01-28 12:02:18,691 INFO L231 Difference]: Finished difference. Result has 234 places, 444 transitions, 7210 flow [2023-01-28 12:02:18,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=5755, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=7210, PETRI_PLACES=234, PETRI_TRANSITIONS=444} [2023-01-28 12:02:18,691 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 213 predicate places. [2023-01-28 12:02:18,691 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 444 transitions, 7210 flow [2023-01-28 12:02:18,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 127.72222222222223) internal successors, (2299), 18 states have internal predecessors, (2299), 0 states have call successors, (0), 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 12:02:18,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:02:18,692 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:02:18,701 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 12:02:18,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:02:18,898 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:02:18,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:02:18,898 INFO L85 PathProgramCache]: Analyzing trace with hash -405140153, now seen corresponding path program 12 times [2023-01-28 12:02:18,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:02:18,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978266293] [2023-01-28 12:02:18,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:02:18,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:02:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:02:19,132 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:19,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:02:19,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978266293] [2023-01-28 12:02:19,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978266293] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:02:19,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41598666] [2023-01-28 12:02:19,132 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 12:02:19,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:02:19,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:02:19,134 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:02:19,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 12:02:19,267 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 12:02:19,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:02:19,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:02:19,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:02:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:19,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:02:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:19,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41598666] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:02:19,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:02:19,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-01-28 12:02:19,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509255135] [2023-01-28 12:02:19,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:02:19,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 12:02:19,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:02:19,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 12:02:19,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-01-28 12:02:19,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:02:19,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 444 transitions, 7210 flow. Second operand has 16 states, 16 states have (on average 127.9375) internal successors, (2047), 16 states have internal predecessors, (2047), 0 states have call successors, (0), 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 12:02:19,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:02:19,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:02:19,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:02:22,100 INFO L130 PetriNetUnfolder]: 1085/2209 cut-off events. [2023-01-28 12:02:22,100 INFO L131 PetriNetUnfolder]: For 19775/19775 co-relation queries the response was YES. [2023-01-28 12:02:22,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15322 conditions, 2209 events. 1085/2209 cut-off events. For 19775/19775 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 14368 event pairs, 97 based on Foata normal form. 44/2252 useless extension candidates. Maximal degree in co-relation 14774. Up to 527 conditions per place. [2023-01-28 12:02:22,122 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 256 selfloop transitions, 293 changer transitions 5/554 dead transitions. [2023-01-28 12:02:22,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 554 transitions, 8931 flow [2023-01-28 12:02:22,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-01-28 12:02:22,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-01-28 12:02:22,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 5751 transitions. [2023-01-28 12:02:22,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39607438016528923 [2023-01-28 12:02:22,130 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 5751 transitions. [2023-01-28 12:02:22,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 5751 transitions. [2023-01-28 12:02:22,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:02:22,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 5751 transitions. [2023-01-28 12:02:22,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 130.70454545454547) internal successors, (5751), 44 states have internal predecessors, (5751), 0 states have call successors, (0), 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 12:02:22,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 330.0) internal successors, (14850), 45 states have internal predecessors, (14850), 0 states have call successors, (0), 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 12:02:22,151 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 330.0) internal successors, (14850), 45 states have internal predecessors, (14850), 0 states have call successors, (0), 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 12:02:22,151 INFO L175 Difference]: Start difference. First operand has 234 places, 444 transitions, 7210 flow. Second operand 44 states and 5751 transitions. [2023-01-28 12:02:22,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 554 transitions, 8931 flow [2023-01-28 12:02:22,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 554 transitions, 8567 flow, removed 82 selfloop flow, removed 11 redundant places. [2023-01-28 12:02:22,320 INFO L231 Difference]: Finished difference. Result has 267 places, 440 transitions, 7428 flow [2023-01-28 12:02:22,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=6477, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=7428, PETRI_PLACES=267, PETRI_TRANSITIONS=440} [2023-01-28 12:02:22,321 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 246 predicate places. [2023-01-28 12:02:22,321 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 440 transitions, 7428 flow [2023-01-28 12:02:22,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 127.9375) internal successors, (2047), 16 states have internal predecessors, (2047), 0 states have call successors, (0), 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 12:02:22,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:02:22,322 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:02:22,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-28 12:02:22,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:02:22,528 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:02:22,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:02:22,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1666404129, now seen corresponding path program 13 times [2023-01-28 12:02:22,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:02:22,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429324713] [2023-01-28 12:02:22,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:02:22,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:02:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:02:22,712 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:22,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:02:22,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429324713] [2023-01-28 12:02:22,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429324713] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:02:22,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581630906] [2023-01-28 12:02:22,712 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 12:02:22,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:02:22,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:02:22,717 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:02:22,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 12:02:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:02:22,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:02:22,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:02:22,891 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:22,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:02:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:23,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581630906] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:02:23,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:02:23,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-01-28 12:02:23,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568736569] [2023-01-28 12:02:23,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:02:23,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 12:02:23,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:02:23,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 12:02:23,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-01-28 12:02:23,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:02:23,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 440 transitions, 7428 flow. Second operand has 17 states, 17 states have (on average 127.94117647058823) internal successors, (2175), 17 states have internal predecessors, (2175), 0 states have call successors, (0), 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 12:02:23,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:02:23,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:02:23,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:02:27,887 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 12:02:31,466 INFO L130 PetriNetUnfolder]: 1728/3559 cut-off events. [2023-01-28 12:02:31,466 INFO L131 PetriNetUnfolder]: For 33727/33727 co-relation queries the response was YES. [2023-01-28 12:02:31,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26406 conditions, 3559 events. 1728/3559 cut-off events. For 33727/33727 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 26091 event pairs, 160 based on Foata normal form. 58/3616 useless extension candidates. Maximal degree in co-relation 25898. Up to 871 conditions per place. [2023-01-28 12:02:31,496 INFO L137 encePairwiseOnDemand]: 323/330 looper letters, 422 selfloop transitions, 457 changer transitions 30/909 dead transitions. [2023-01-28 12:02:31,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 909 transitions, 16624 flow [2023-01-28 12:02:31,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-01-28 12:02:31,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-01-28 12:02:31,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 5003 transitions. [2023-01-28 12:02:31,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39896331738437 [2023-01-28 12:02:31,502 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 5003 transitions. [2023-01-28 12:02:31,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 5003 transitions. [2023-01-28 12:02:31,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:02:31,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 5003 transitions. [2023-01-28 12:02:31,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 131.6578947368421) internal successors, (5003), 38 states have internal predecessors, (5003), 0 states have call successors, (0), 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 12:02:31,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 330.0) internal successors, (12870), 39 states have internal predecessors, (12870), 0 states have call successors, (0), 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 12:02:31,518 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 330.0) internal successors, (12870), 39 states have internal predecessors, (12870), 0 states have call successors, (0), 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 12:02:31,518 INFO L175 Difference]: Start difference. First operand has 267 places, 440 transitions, 7428 flow. Second operand 38 states and 5003 transitions. [2023-01-28 12:02:31,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 909 transitions, 16624 flow [2023-01-28 12:02:31,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 909 transitions, 15834 flow, removed 188 selfloop flow, removed 19 redundant places. [2023-01-28 12:02:31,803 INFO L231 Difference]: Finished difference. Result has 308 places, 710 transitions, 13632 flow [2023-01-28 12:02:31,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=7011, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=13632, PETRI_PLACES=308, PETRI_TRANSITIONS=710} [2023-01-28 12:02:31,804 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 287 predicate places. [2023-01-28 12:02:31,804 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 710 transitions, 13632 flow [2023-01-28 12:02:31,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 127.94117647058823) internal successors, (2175), 17 states have internal predecessors, (2175), 0 states have call successors, (0), 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 12:02:31,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:02:31,804 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:02:31,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-28 12:02:32,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:02:32,010 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:02:32,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:02:32,011 INFO L85 PathProgramCache]: Analyzing trace with hash 920637313, now seen corresponding path program 14 times [2023-01-28 12:02:32,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:02:32,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579963694] [2023-01-28 12:02:32,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:02:32,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:02:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:02:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:32,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:02:32,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579963694] [2023-01-28 12:02:32,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579963694] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:02:32,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966208166] [2023-01-28 12:02:32,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:02:32,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:02:32,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:02:32,173 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:02:32,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 12:02:32,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:02:32,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:02:32,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:02:32,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:02:32,351 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:32,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:02:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:32,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966208166] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:02:32,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:02:32,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-01-28 12:02:32,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531588536] [2023-01-28 12:02:32,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:02:32,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 12:02:32,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:02:32,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 12:02:32,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-01-28 12:02:32,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:02:32,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 710 transitions, 13632 flow. Second operand has 17 states, 17 states have (on average 127.88235294117646) internal successors, (2174), 17 states have internal predecessors, (2174), 0 states have call successors, (0), 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 12:02:32,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:02:32,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:02:32,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:02:35,186 INFO L130 PetriNetUnfolder]: 2114/4234 cut-off events. [2023-01-28 12:02:35,186 INFO L131 PetriNetUnfolder]: For 51386/51386 co-relation queries the response was YES. [2023-01-28 12:02:35,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35699 conditions, 4234 events. 2114/4234 cut-off events. For 51386/51386 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 31587 event pairs, 537 based on Foata normal form. 108/4341 useless extension candidates. Maximal degree in co-relation 35379. Up to 2830 conditions per place. [2023-01-28 12:02:35,237 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 601 selfloop transitions, 430 changer transitions 1/1032 dead transitions. [2023-01-28 12:02:35,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 1032 transitions, 21754 flow [2023-01-28 12:02:35,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-01-28 12:02:35,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-01-28 12:02:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 4701 transitions. [2023-01-28 12:02:35,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39570707070707073 [2023-01-28 12:02:35,243 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 4701 transitions. [2023-01-28 12:02:35,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 4701 transitions. [2023-01-28 12:02:35,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:02:35,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 4701 transitions. [2023-01-28 12:02:35,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 130.58333333333334) internal successors, (4701), 36 states have internal predecessors, (4701), 0 states have call successors, (0), 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 12:02:35,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 330.0) internal successors, (12210), 37 states have internal predecessors, (12210), 0 states have call successors, (0), 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 12:02:35,258 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 330.0) internal successors, (12210), 37 states have internal predecessors, (12210), 0 states have call successors, (0), 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 12:02:35,258 INFO L175 Difference]: Start difference. First operand has 308 places, 710 transitions, 13632 flow. Second operand 36 states and 4701 transitions. [2023-01-28 12:02:35,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 1032 transitions, 21754 flow [2023-01-28 12:02:36,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 1032 transitions, 21077 flow, removed 332 selfloop flow, removed 3 redundant places. [2023-01-28 12:02:36,126 INFO L231 Difference]: Finished difference. Result has 355 places, 928 transitions, 19395 flow [2023-01-28 12:02:36,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=12948, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=19395, PETRI_PLACES=355, PETRI_TRANSITIONS=928} [2023-01-28 12:02:36,127 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 334 predicate places. [2023-01-28 12:02:36,127 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 928 transitions, 19395 flow [2023-01-28 12:02:36,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 127.88235294117646) internal successors, (2174), 17 states have internal predecessors, (2174), 0 states have call successors, (0), 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 12:02:36,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:02:36,128 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:02:36,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 12:02:36,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:02:36,329 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:02:36,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:02:36,329 INFO L85 PathProgramCache]: Analyzing trace with hash 742378723, now seen corresponding path program 15 times [2023-01-28 12:02:36,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:02:36,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117480739] [2023-01-28 12:02:36,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:02:36,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:02:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:02:36,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:36,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:02:36,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117480739] [2023-01-28 12:02:36,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117480739] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:02:36,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146546468] [2023-01-28 12:02:36,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 12:02:36,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:02:36,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:02:36,521 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:02:36,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-28 12:02:36,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 12:02:36,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:02:36,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:02:36,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:02:36,781 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:36,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:02:36,872 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:36,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146546468] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:02:36,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:02:36,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-01-28 12:02:36,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611592111] [2023-01-28 12:02:36,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:02:36,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 12:02:36,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:02:36,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 12:02:36,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-01-28 12:02:36,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:02:36,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 928 transitions, 19395 flow. Second operand has 17 states, 17 states have (on average 127.88235294117646) internal successors, (2174), 17 states have internal predecessors, (2174), 0 states have call successors, (0), 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 12:02:36,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:02:36,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:02:36,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:02:39,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 12:02:43,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 12:02:45,506 INFO L130 PetriNetUnfolder]: 2412/4878 cut-off events. [2023-01-28 12:02:45,506 INFO L131 PetriNetUnfolder]: For 79494/79494 co-relation queries the response was YES. [2023-01-28 12:02:45,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44522 conditions, 4878 events. 2412/4878 cut-off events. For 79494/79494 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 37835 event pairs, 151 based on Foata normal form. 62/4939 useless extension candidates. Maximal degree in co-relation 43896. Up to 1136 conditions per place. [2023-01-28 12:02:45,657 INFO L137 encePairwiseOnDemand]: 323/330 looper letters, 434 selfloop transitions, 773 changer transitions 23/1230 dead transitions. [2023-01-28 12:02:45,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 1230 transitions, 26945 flow [2023-01-28 12:02:45,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-01-28 12:02:45,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-01-28 12:02:45,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 6662 transitions. [2023-01-28 12:02:45,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958407605466429 [2023-01-28 12:02:45,666 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 6662 transitions. [2023-01-28 12:02:45,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 6662 transitions. [2023-01-28 12:02:45,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:02:45,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 6662 transitions. [2023-01-28 12:02:45,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 130.62745098039215) internal successors, (6662), 51 states have internal predecessors, (6662), 0 states have call successors, (0), 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 12:02:45,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 330.0) internal successors, (17160), 52 states have internal predecessors, (17160), 0 states have call successors, (0), 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 12:02:45,689 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 330.0) internal successors, (17160), 52 states have internal predecessors, (17160), 0 states have call successors, (0), 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 12:02:45,689 INFO L175 Difference]: Start difference. First operand has 355 places, 928 transitions, 19395 flow. Second operand 51 states and 6662 transitions. [2023-01-28 12:02:45,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 1230 transitions, 26945 flow [2023-01-28 12:02:46,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 1230 transitions, 26215 flow, removed 343 selfloop flow, removed 4 redundant places. [2023-01-28 12:02:46,911 INFO L231 Difference]: Finished difference. Result has 415 places, 1071 transitions, 24598 flow [2023-01-28 12:02:46,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=18711, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=924, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=635, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=24598, PETRI_PLACES=415, PETRI_TRANSITIONS=1071} [2023-01-28 12:02:46,912 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 394 predicate places. [2023-01-28 12:02:46,912 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 1071 transitions, 24598 flow [2023-01-28 12:02:46,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 127.88235294117646) internal successors, (2174), 17 states have internal predecessors, (2174), 0 states have call successors, (0), 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 12:02:46,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:02:46,913 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:02:46,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-28 12:02:47,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:02:47,114 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:02:47,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:02:47,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1077295607, now seen corresponding path program 16 times [2023-01-28 12:02:47,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:02:47,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928387880] [2023-01-28 12:02:47,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:02:47,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:02:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:02:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:47,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:02:47,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928387880] [2023-01-28 12:02:47,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928387880] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:02:47,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012212350] [2023-01-28 12:02:47,338 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 12:02:47,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:02:47,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:02:47,339 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:02:47,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-28 12:02:47,449 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 12:02:47,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:02:47,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:02:47,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:02:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:47,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:02:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:47,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012212350] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:02:47,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:02:47,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-01-28 12:02:47,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169957767] [2023-01-28 12:02:47,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:02:47,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 12:02:47,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:02:47,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 12:02:47,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-01-28 12:02:47,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:02:47,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 1071 transitions, 24598 flow. Second operand has 18 states, 18 states have (on average 127.72222222222223) internal successors, (2299), 18 states have internal predecessors, (2299), 0 states have call successors, (0), 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 12:02:47,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:02:47,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:02:47,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:02:51,403 INFO L130 PetriNetUnfolder]: 2501/5135 cut-off events. [2023-01-28 12:02:51,403 INFO L131 PetriNetUnfolder]: For 97223/97223 co-relation queries the response was YES. [2023-01-28 12:02:51,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50071 conditions, 5135 events. 2501/5135 cut-off events. For 97223/97223 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 40616 event pairs, 335 based on Foata normal form. 52/5186 useless extension candidates. Maximal degree in co-relation 49385. Up to 1686 conditions per place. [2023-01-28 12:02:51,456 INFO L137 encePairwiseOnDemand]: 323/330 looper letters, 525 selfloop transitions, 694 changer transitions 0/1219 dead transitions. [2023-01-28 12:02:51,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 1219 transitions, 29653 flow [2023-01-28 12:02:51,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-01-28 12:02:51,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-01-28 12:02:51,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3550 transitions. [2023-01-28 12:02:51,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984287317620651 [2023-01-28 12:02:51,462 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3550 transitions. [2023-01-28 12:02:51,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3550 transitions. [2023-01-28 12:02:51,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:02:51,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3550 transitions. [2023-01-28 12:02:51,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 131.4814814814815) internal successors, (3550), 27 states have internal predecessors, (3550), 0 states have call successors, (0), 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 12:02:51,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 330.0) internal successors, (9240), 28 states have internal predecessors, (9240), 0 states have call successors, (0), 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 12:02:51,473 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 330.0) internal successors, (9240), 28 states have internal predecessors, (9240), 0 states have call successors, (0), 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 12:02:51,473 INFO L175 Difference]: Start difference. First operand has 415 places, 1071 transitions, 24598 flow. Second operand 27 states and 3550 transitions. [2023-01-28 12:02:51,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 1219 transitions, 29653 flow [2023-01-28 12:02:53,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 1219 transitions, 28398 flow, removed 523 selfloop flow, removed 16 redundant places. [2023-01-28 12:02:53,074 INFO L231 Difference]: Finished difference. Result has 429 places, 1133 transitions, 27416 flow [2023-01-28 12:02:53,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=23355, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=633, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=27416, PETRI_PLACES=429, PETRI_TRANSITIONS=1133} [2023-01-28 12:02:53,075 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 408 predicate places. [2023-01-28 12:02:53,075 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 1133 transitions, 27416 flow [2023-01-28 12:02:53,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 127.72222222222223) internal successors, (2299), 18 states have internal predecessors, (2299), 0 states have call successors, (0), 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 12:02:53,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:02:53,076 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:02:53,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-28 12:02:53,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:02:53,277 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:02:53,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:02:53,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1200514761, now seen corresponding path program 17 times [2023-01-28 12:02:53,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:02:53,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464318694] [2023-01-28 12:02:53,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:02:53,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:02:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:02:53,461 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:53,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:02:53,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464318694] [2023-01-28 12:02:53,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464318694] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:02:53,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423475465] [2023-01-28 12:02:53,462 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 12:02:53,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:02:53,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:02:53,465 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:02:53,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-28 12:02:53,579 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:02:53,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:02:53,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 12:02:53,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:02:53,809 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:53,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:02:53,974 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:02:53,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423475465] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:02:53,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:02:53,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2023-01-28 12:02:53,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183194125] [2023-01-28 12:02:53,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:02:53,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 12:02:53,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:02:53,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 12:02:53,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-01-28 12:02:53,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:02:53,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 1133 transitions, 27416 flow. Second operand has 17 states, 17 states have (on average 128.0) internal successors, (2176), 17 states have internal predecessors, (2176), 0 states have call successors, (0), 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 12:02:53,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:02:53,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:02:53,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:02:57,602 INFO L130 PetriNetUnfolder]: 2910/5863 cut-off events. [2023-01-28 12:02:57,603 INFO L131 PetriNetUnfolder]: For 125207/125207 co-relation queries the response was YES. [2023-01-28 12:02:57,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59782 conditions, 5863 events. 2910/5863 cut-off events. For 125207/125207 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 46559 event pairs, 36 based on Foata normal form. 28/5890 useless extension candidates. Maximal degree in co-relation 59063. Up to 2192 conditions per place. [2023-01-28 12:02:57,765 INFO L137 encePairwiseOnDemand]: 323/330 looper letters, 832 selfloop transitions, 606 changer transitions 8/1446 dead transitions. [2023-01-28 12:02:57,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 1446 transitions, 36526 flow [2023-01-28 12:02:57,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-01-28 12:02:57,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-01-28 12:02:57,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 5227 transitions. [2023-01-28 12:02:57,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3959848484848485 [2023-01-28 12:02:57,775 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 5227 transitions. [2023-01-28 12:02:57,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 5227 transitions. [2023-01-28 12:02:57,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:02:57,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 5227 transitions. [2023-01-28 12:02:57,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 130.675) internal successors, (5227), 40 states have internal predecessors, (5227), 0 states have call successors, (0), 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 12:02:57,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 330.0) internal successors, (13530), 41 states have internal predecessors, (13530), 0 states have call successors, (0), 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 12:02:57,794 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 330.0) internal successors, (13530), 41 states have internal predecessors, (13530), 0 states have call successors, (0), 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 12:02:57,794 INFO L175 Difference]: Start difference. First operand has 429 places, 1133 transitions, 27416 flow. Second operand 40 states and 5227 transitions. [2023-01-28 12:02:57,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 1446 transitions, 36526 flow [2023-01-28 12:03:00,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1446 transitions, 35871 flow, removed 192 selfloop flow, removed 15 redundant places. [2023-01-28 12:03:00,046 INFO L231 Difference]: Finished difference. Result has 465 places, 1283 transitions, 32908 flow [2023-01-28 12:03:00,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=26763, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=478, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=32908, PETRI_PLACES=465, PETRI_TRANSITIONS=1283} [2023-01-28 12:03:00,047 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 444 predicate places. [2023-01-28 12:03:00,048 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 1283 transitions, 32908 flow [2023-01-28 12:03:00,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 128.0) internal successors, (2176), 17 states have internal predecessors, (2176), 0 states have call successors, (0), 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 12:03:00,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:03:00,048 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:03:00,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-28 12:03:00,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-01-28 12:03:00,257 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:03:00,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:03:00,257 INFO L85 PathProgramCache]: Analyzing trace with hash -270434899, now seen corresponding path program 18 times [2023-01-28 12:03:00,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:03:00,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141564797] [2023-01-28 12:03:00,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:03:00,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:03:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:03:00,437 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:03:00,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:03:00,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141564797] [2023-01-28 12:03:00,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141564797] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:03:00,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154512106] [2023-01-28 12:03:00,439 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 12:03:00,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:03:00,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:03:00,440 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:03:00,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-28 12:03:00,678 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 12:03:00,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:03:00,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:03:00,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:03:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:03:00,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:03:00,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:03:00,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154512106] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:03:00,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:03:00,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-01-28 12:03:00,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120483468] [2023-01-28 12:03:00,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:03:00,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 12:03:00,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:03:00,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 12:03:00,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2023-01-28 12:03:00,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:03:00,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 1283 transitions, 32908 flow. Second operand has 19 states, 19 states have (on average 127.6842105263158) internal successors, (2426), 19 states have internal predecessors, (2426), 0 states have call successors, (0), 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 12:03:00,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:03:00,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:03:00,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:03:04,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 12:03:08,941 INFO L130 PetriNetUnfolder]: 3872/8038 cut-off events. [2023-01-28 12:03:08,942 INFO L131 PetriNetUnfolder]: For 191026/191026 co-relation queries the response was YES. [2023-01-28 12:03:09,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85281 conditions, 8038 events. 3872/8038 cut-off events. For 191026/191026 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 68852 event pairs, 49 based on Foata normal form. 38/8075 useless extension candidates. Maximal degree in co-relation 84530. Up to 2454 conditions per place. [2023-01-28 12:03:09,037 INFO L137 encePairwiseOnDemand]: 323/330 looper letters, 1159 selfloop transitions, 743 changer transitions 9/1911 dead transitions. [2023-01-28 12:03:09,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 1911 transitions, 51332 flow [2023-01-28 12:03:09,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-28 12:03:09,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-01-28 12:03:09,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4628 transitions. [2023-01-28 12:03:09,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006926406926407 [2023-01-28 12:03:09,041 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4628 transitions. [2023-01-28 12:03:09,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4628 transitions. [2023-01-28 12:03:09,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:03:09,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4628 transitions. [2023-01-28 12:03:09,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 132.22857142857143) internal successors, (4628), 35 states have internal predecessors, (4628), 0 states have call successors, (0), 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 12:03:09,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 330.0) internal successors, (11880), 36 states have internal predecessors, (11880), 0 states have call successors, (0), 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 12:03:09,057 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 330.0) internal successors, (11880), 36 states have internal predecessors, (11880), 0 states have call successors, (0), 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 12:03:09,057 INFO L175 Difference]: Start difference. First operand has 465 places, 1283 transitions, 32908 flow. Second operand 35 states and 4628 transitions. [2023-01-28 12:03:09,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 1911 transitions, 51332 flow [2023-01-28 12:03:13,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 1911 transitions, 50141 flow, removed 456 selfloop flow, removed 15 redundant places. [2023-01-28 12:03:13,176 INFO L231 Difference]: Finished difference. Result has 497 places, 1573 transitions, 42789 flow [2023-01-28 12:03:13,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=32039, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=492, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=721, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=42789, PETRI_PLACES=497, PETRI_TRANSITIONS=1573} [2023-01-28 12:03:13,178 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 476 predicate places. [2023-01-28 12:03:13,178 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 1573 transitions, 42789 flow [2023-01-28 12:03:13,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 127.6842105263158) internal successors, (2426), 19 states have internal predecessors, (2426), 0 states have call successors, (0), 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 12:03:13,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:03:13,179 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:03:13,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-01-28 12:03:13,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-01-28 12:03:13,385 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:03:13,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:03:13,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1661449927, now seen corresponding path program 19 times [2023-01-28 12:03:13,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:03:13,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83556028] [2023-01-28 12:03:13,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:03:13,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:03:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:03:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:03:13,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:03:13,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83556028] [2023-01-28 12:03:13,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83556028] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:03:13,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731768696] [2023-01-28 12:03:13,553 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 12:03:13,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:03:13,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:03:13,557 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:03:13,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-01-28 12:03:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:03:13,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:03:13,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:03:13,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:03:13,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:03:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:03:13,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731768696] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:03:13,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:03:13,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-01-28 12:03:13,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748297137] [2023-01-28 12:03:13,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:03:13,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 12:03:13,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:03:13,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 12:03:13,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-01-28 12:03:13,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:03:13,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 1573 transitions, 42789 flow. Second operand has 16 states, 16 states have (on average 127.9375) internal successors, (2047), 16 states have internal predecessors, (2047), 0 states have call successors, (0), 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 12:03:13,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:03:13,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:03:13,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:03:18,992 INFO L130 PetriNetUnfolder]: 4160/8498 cut-off events. [2023-01-28 12:03:18,992 INFO L131 PetriNetUnfolder]: For 231209/231209 co-relation queries the response was YES. [2023-01-28 12:03:19,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96065 conditions, 8498 events. 4160/8498 cut-off events. For 231209/231209 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 72509 event pairs, 69 based on Foata normal form. 30/8527 useless extension candidates. Maximal degree in co-relation 95608. Up to 4923 conditions per place. [2023-01-28 12:03:19,095 INFO L137 encePairwiseOnDemand]: 325/330 looper letters, 1533 selfloop transitions, 374 changer transitions 3/1910 dead transitions. [2023-01-28 12:03:19,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 1910 transitions, 56104 flow [2023-01-28 12:03:19,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 12:03:19,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 12:03:19,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1848 transitions. [2023-01-28 12:03:19,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2023-01-28 12:03:19,097 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1848 transitions. [2023-01-28 12:03:19,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1848 transitions. [2023-01-28 12:03:19,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:03:19,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1848 transitions. [2023-01-28 12:03:19,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 0 states have call successors, (0), 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 12:03:19,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 330.0) internal successors, (4950), 15 states have internal predecessors, (4950), 0 states have call successors, (0), 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 12:03:19,102 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 330.0) internal successors, (4950), 15 states have internal predecessors, (4950), 0 states have call successors, (0), 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 12:03:19,102 INFO L175 Difference]: Start difference. First operand has 497 places, 1573 transitions, 42789 flow. Second operand 14 states and 1848 transitions. [2023-01-28 12:03:19,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 1910 transitions, 56104 flow [2023-01-28 12:03:24,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 1910 transitions, 54775 flow, removed 465 selfloop flow, removed 13 redundant places. [2023-01-28 12:03:24,246 INFO L231 Difference]: Finished difference. Result has 502 places, 1707 transitions, 47372 flow [2023-01-28 12:03:24,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=41496, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=47372, PETRI_PLACES=502, PETRI_TRANSITIONS=1707} [2023-01-28 12:03:24,247 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 481 predicate places. [2023-01-28 12:03:24,247 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 1707 transitions, 47372 flow [2023-01-28 12:03:24,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 127.9375) internal successors, (2047), 16 states have internal predecessors, (2047), 0 states have call successors, (0), 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 12:03:24,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:03:24,248 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:03:24,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-01-28 12:03:24,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-01-28 12:03:24,448 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:03:24,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:03:24,449 INFO L85 PathProgramCache]: Analyzing trace with hash 594143359, now seen corresponding path program 20 times [2023-01-28 12:03:24,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:03:24,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030987693] [2023-01-28 12:03:24,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:03:24,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:03:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:03:24,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:03:24,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:03:24,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030987693] [2023-01-28 12:03:24,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030987693] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:03:24,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047836340] [2023-01-28 12:03:24,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:03:24,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:03:24,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:03:24,641 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:03:24,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-01-28 12:03:24,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:03:24,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:03:24,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:03:24,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:03:24,805 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:03:24,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:03:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:03:24,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047836340] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:03:24,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:03:24,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-01-28 12:03:24,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068773011] [2023-01-28 12:03:24,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:03:24,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 12:03:24,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:03:24,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 12:03:24,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-01-28 12:03:24,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:03:24,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 1707 transitions, 47372 flow. Second operand has 19 states, 19 states have (on average 127.78947368421052) internal successors, (2428), 19 states have internal predecessors, (2428), 0 states have call successors, (0), 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 12:03:24,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:03:24,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:03:24,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:03:33,171 INFO L130 PetriNetUnfolder]: 4491/9125 cut-off events. [2023-01-28 12:03:33,171 INFO L131 PetriNetUnfolder]: For 246018/246018 co-relation queries the response was YES. [2023-01-28 12:03:33,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102975 conditions, 9125 events. 4491/9125 cut-off events. For 246018/246018 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 78759 event pairs, 15 based on Foata normal form. 98/9222 useless extension candidates. Maximal degree in co-relation 102524. Up to 3175 conditions per place. [2023-01-28 12:03:33,272 INFO L137 encePairwiseOnDemand]: 323/330 looper letters, 839 selfloop transitions, 1334 changer transitions 8/2181 dead transitions. [2023-01-28 12:03:33,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 2181 transitions, 62919 flow [2023-01-28 12:03:33,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-01-28 12:03:33,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-01-28 12:03:33,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 7576 transitions. [2023-01-28 12:03:33,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39582027168234063 [2023-01-28 12:03:33,277 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 7576 transitions. [2023-01-28 12:03:33,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 7576 transitions. [2023-01-28 12:03:33,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:03:33,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 7576 transitions. [2023-01-28 12:03:33,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 130.6206896551724) internal successors, (7576), 58 states have internal predecessors, (7576), 0 states have call successors, (0), 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 12:03:33,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 330.0) internal successors, (19470), 59 states have internal predecessors, (19470), 0 states have call successors, (0), 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 12:03:33,297 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 330.0) internal successors, (19470), 59 states have internal predecessors, (19470), 0 states have call successors, (0), 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 12:03:33,297 INFO L175 Difference]: Start difference. First operand has 502 places, 1707 transitions, 47372 flow. Second operand 58 states and 7576 transitions. [2023-01-28 12:03:33,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 2181 transitions, 62919 flow [2023-01-28 12:03:38,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 2181 transitions, 62305 flow, removed 46 selfloop flow, removed 8 redundant places. [2023-01-28 12:03:38,697 INFO L231 Difference]: Finished difference. Result has 564 places, 1979 transitions, 58855 flow [2023-01-28 12:03:38,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=46703, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1066, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=58855, PETRI_PLACES=564, PETRI_TRANSITIONS=1979} [2023-01-28 12:03:38,699 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 543 predicate places. [2023-01-28 12:03:38,699 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 1979 transitions, 58855 flow [2023-01-28 12:03:38,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 127.78947368421052) internal successors, (2428), 19 states have internal predecessors, (2428), 0 states have call successors, (0), 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 12:03:38,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:03:38,699 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:03:38,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-01-28 12:03:38,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:03:38,906 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:03:38,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:03:38,906 INFO L85 PathProgramCache]: Analyzing trace with hash 995735115, now seen corresponding path program 21 times [2023-01-28 12:03:38,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:03:38,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014306548] [2023-01-28 12:03:38,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:03:38,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:03:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:03:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:03:39,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:03:39,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014306548] [2023-01-28 12:03:39,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014306548] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:03:39,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049539238] [2023-01-28 12:03:39,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 12:03:39,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:03:39,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:03:39,081 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:03:39,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-01-28 12:03:39,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 12:03:39,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:03:39,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:03:39,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:03:39,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:03:39,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:03:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:03:39,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049539238] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:03:39,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:03:39,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-01-28 12:03:39,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259093076] [2023-01-28 12:03:39,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:03:39,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 12:03:39,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:03:39,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 12:03:39,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-01-28 12:03:39,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:03:39,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 1979 transitions, 58855 flow. Second operand has 18 states, 18 states have (on average 127.83333333333333) internal successors, (2301), 18 states have internal predecessors, (2301), 0 states have call successors, (0), 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 12:03:39,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:03:39,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:03:39,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:03:46,973 INFO L130 PetriNetUnfolder]: 4653/9437 cut-off events. [2023-01-28 12:03:46,973 INFO L131 PetriNetUnfolder]: For 307159/307159 co-relation queries the response was YES. [2023-01-28 12:03:47,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113946 conditions, 9437 events. 4653/9437 cut-off events. For 307159/307159 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 81810 event pairs, 95 based on Foata normal form. 52/9488 useless extension candidates. Maximal degree in co-relation 113578. Up to 5187 conditions per place. [2023-01-28 12:03:47,091 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 1570 selfloop transitions, 644 changer transitions 2/2216 dead transitions. [2023-01-28 12:03:47,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 2216 transitions, 69076 flow [2023-01-28 12:03:47,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-01-28 12:03:47,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-01-28 12:03:47,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4184 transitions. [2023-01-28 12:03:47,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39621212121212124 [2023-01-28 12:03:47,094 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4184 transitions. [2023-01-28 12:03:47,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4184 transitions. [2023-01-28 12:03:47,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:03:47,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4184 transitions. [2023-01-28 12:03:47,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 130.75) internal successors, (4184), 32 states have internal predecessors, (4184), 0 states have call successors, (0), 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 12:03:47,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 330.0) internal successors, (10890), 33 states have internal predecessors, (10890), 0 states have call successors, (0), 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 12:03:47,104 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 330.0) internal successors, (10890), 33 states have internal predecessors, (10890), 0 states have call successors, (0), 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 12:03:47,104 INFO L175 Difference]: Start difference. First operand has 564 places, 1979 transitions, 58855 flow. Second operand 32 states and 4184 transitions. [2023-01-28 12:03:47,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 2216 transitions, 69076 flow [2023-01-28 12:03:54,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 2216 transitions, 67160 flow, removed 510 selfloop flow, removed 25 redundant places. [2023-01-28 12:03:54,328 INFO L231 Difference]: Finished difference. Result has 576 places, 2078 transitions, 62013 flow [2023-01-28 12:03:54,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=57029, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1976, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=564, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=62013, PETRI_PLACES=576, PETRI_TRANSITIONS=2078} [2023-01-28 12:03:54,330 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 555 predicate places. [2023-01-28 12:03:54,330 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 2078 transitions, 62013 flow [2023-01-28 12:03:54,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 127.83333333333333) internal successors, (2301), 18 states have internal predecessors, (2301), 0 states have call successors, (0), 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 12:03:54,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:03:54,331 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:03:54,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-01-28 12:03:54,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-01-28 12:03:54,537 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:03:54,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:03:54,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1500576710, now seen corresponding path program 22 times [2023-01-28 12:03:54,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:03:54,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724974489] [2023-01-28 12:03:54,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:03:54,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:03:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:03:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:03:54,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:03:54,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724974489] [2023-01-28 12:03:54,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724974489] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:03:54,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313836024] [2023-01-28 12:03:54,686 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 12:03:54,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:03:54,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:03:54,688 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:03:54,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-01-28 12:03:54,819 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 12:03:54,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:03:54,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:03:54,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:03:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:03:54,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:03:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:03:54,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313836024] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:03:54,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:03:54,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-01-28 12:03:54,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114227787] [2023-01-28 12:03:54,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:03:54,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 12:03:54,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:03:54,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 12:03:54,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-01-28 12:03:54,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:03:54,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 2078 transitions, 62013 flow. Second operand has 15 states, 15 states have (on average 128.33333333333334) internal successors, (1925), 15 states have internal predecessors, (1925), 0 states have call successors, (0), 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 12:03:54,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:03:54,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:03:54,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:04:01,864 INFO L130 PetriNetUnfolder]: 4672/9470 cut-off events. [2023-01-28 12:04:01,864 INFO L131 PetriNetUnfolder]: For 337818/337818 co-relation queries the response was YES. [2023-01-28 12:04:01,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116427 conditions, 9470 events. 4672/9470 cut-off events. For 337818/337818 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 82247 event pairs, 109 based on Foata normal form. 8/9477 useless extension candidates. Maximal degree in co-relation 115991. Up to 5905 conditions per place. [2023-01-28 12:04:01,981 INFO L137 encePairwiseOnDemand]: 325/330 looper letters, 1199 selfloop transitions, 916 changer transitions 0/2115 dead transitions. [2023-01-28 12:04:01,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 2115 transitions, 66790 flow [2023-01-28 12:04:01,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 12:04:01,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 12:04:01,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1462 transitions. [2023-01-28 12:04:01,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027548209366391 [2023-01-28 12:04:01,983 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1462 transitions. [2023-01-28 12:04:01,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1462 transitions. [2023-01-28 12:04:01,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:04:01,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1462 transitions. [2023-01-28 12:04:01,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 132.9090909090909) internal successors, (1462), 11 states have internal predecessors, (1462), 0 states have call successors, (0), 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 12:04:01,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 330.0) internal successors, (3960), 12 states have internal predecessors, (3960), 0 states have call successors, (0), 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 12:04:01,986 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 330.0) internal successors, (3960), 12 states have internal predecessors, (3960), 0 states have call successors, (0), 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 12:04:01,986 INFO L175 Difference]: Start difference. First operand has 576 places, 2078 transitions, 62013 flow. Second operand 11 states and 1462 transitions. [2023-01-28 12:04:01,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 2115 transitions, 66790 flow [2023-01-28 12:04:10,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 2115 transitions, 66102 flow, removed 237 selfloop flow, removed 13 redundant places. [2023-01-28 12:04:10,722 INFO L231 Difference]: Finished difference. Result has 576 places, 2082 transitions, 63274 flow [2023-01-28 12:04:10,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=61329, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2078, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=912, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=63274, PETRI_PLACES=576, PETRI_TRANSITIONS=2082} [2023-01-28 12:04:10,725 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 555 predicate places. [2023-01-28 12:04:10,725 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 2082 transitions, 63274 flow [2023-01-28 12:04:10,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 128.33333333333334) internal successors, (1925), 15 states have internal predecessors, (1925), 0 states have call successors, (0), 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 12:04:10,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:04:10,726 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:04:10,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-01-28 12:04:10,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-01-28 12:04:10,927 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:04:10,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:04:10,928 INFO L85 PathProgramCache]: Analyzing trace with hash -865256220, now seen corresponding path program 23 times [2023-01-28 12:04:10,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:04:10,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994862561] [2023-01-28 12:04:10,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:04:10,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:04:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:04:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:04:11,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:04:11,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994862561] [2023-01-28 12:04:11,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994862561] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:04:11,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536200709] [2023-01-28 12:04:11,112 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 12:04:11,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:04:11,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:04:11,113 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:04:11,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-01-28 12:04:11,253 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 12:04:11,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:04:11,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:04:11,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:04:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:04:11,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:04:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:04:11,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536200709] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:04:11,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:04:11,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-01-28 12:04:11,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239397619] [2023-01-28 12:04:11,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:04:11,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 12:04:11,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:04:11,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 12:04:11,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-01-28 12:04:11,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:04:11,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 2082 transitions, 63274 flow. Second operand has 17 states, 17 states have (on average 128.23529411764707) internal successors, (2180), 17 states have internal predecessors, (2180), 0 states have call successors, (0), 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 12:04:11,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:04:11,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:04:11,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:04:18,708 INFO L130 PetriNetUnfolder]: 4716/9550 cut-off events. [2023-01-28 12:04:18,709 INFO L131 PetriNetUnfolder]: For 347565/347565 co-relation queries the response was YES. [2023-01-28 12:04:18,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118381 conditions, 9550 events. 4716/9550 cut-off events. For 347565/347565 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 82916 event pairs, 118 based on Foata normal form. 12/9561 useless extension candidates. Maximal degree in co-relation 117943. Up to 5941 conditions per place. [2023-01-28 12:04:18,847 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 1204 selfloop transitions, 931 changer transitions 0/2135 dead transitions. [2023-01-28 12:04:18,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 2135 transitions, 68341 flow [2023-01-28 12:04:18,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 12:04:18,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 12:04:18,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1983 transitions. [2023-01-28 12:04:18,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40060606060606063 [2023-01-28 12:04:18,849 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1983 transitions. [2023-01-28 12:04:18,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1983 transitions. [2023-01-28 12:04:18,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:04:18,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1983 transitions. [2023-01-28 12:04:18,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 132.2) internal successors, (1983), 15 states have internal predecessors, (1983), 0 states have call successors, (0), 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 12:04:18,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 330.0) internal successors, (5280), 16 states have internal predecessors, (5280), 0 states have call successors, (0), 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 12:04:18,853 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 330.0) internal successors, (5280), 16 states have internal predecessors, (5280), 0 states have call successors, (0), 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 12:04:18,853 INFO L175 Difference]: Start difference. First operand has 576 places, 2082 transitions, 63274 flow. Second operand 15 states and 1983 transitions. [2023-01-28 12:04:18,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 2135 transitions, 68341 flow [2023-01-28 12:04:27,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 2135 transitions, 67648 flow, removed 25 selfloop flow, removed 4 redundant places. [2023-01-28 12:04:27,901 INFO L231 Difference]: Finished difference. Result has 592 places, 2094 transitions, 64816 flow [2023-01-28 12:04:27,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=62595, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2082, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=921, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=64816, PETRI_PLACES=592, PETRI_TRANSITIONS=2094} [2023-01-28 12:04:27,904 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 571 predicate places. [2023-01-28 12:04:27,904 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 2094 transitions, 64816 flow [2023-01-28 12:04:27,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 128.23529411764707) internal successors, (2180), 17 states have internal predecessors, (2180), 0 states have call successors, (0), 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 12:04:27,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:04:27,904 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:04:27,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-01-28 12:04:28,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:04:28,110 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:04:28,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:04:28,111 INFO L85 PathProgramCache]: Analyzing trace with hash -692008528, now seen corresponding path program 24 times [2023-01-28 12:04:28,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:04:28,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943595070] [2023-01-28 12:04:28,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:04:28,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:04:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:04:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:04:28,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:04:28,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943595070] [2023-01-28 12:04:28,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943595070] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:04:28,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619928258] [2023-01-28 12:04:28,313 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 12:04:28,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:04:28,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:04:28,317 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:04:28,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-01-28 12:04:28,519 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 12:04:28,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:04:28,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:04:28,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:04:28,589 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:04:28,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:04:28,686 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:04:28,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619928258] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:04:28,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:04:28,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-01-28 12:04:28,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547216539] [2023-01-28 12:04:28,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:04:28,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 12:04:28,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:04:28,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 12:04:28,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-01-28 12:04:28,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:04:28,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 2094 transitions, 64816 flow. Second operand has 18 states, 18 states have (on average 128.11111111111111) internal successors, (2306), 18 states have internal predecessors, (2306), 0 states have call successors, (0), 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 12:04:28,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:04:28,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:04:28,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:04:38,053 INFO L130 PetriNetUnfolder]: 4893/9914 cut-off events. [2023-01-28 12:04:38,053 INFO L131 PetriNetUnfolder]: For 372300/372300 co-relation queries the response was YES. [2023-01-28 12:04:38,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124107 conditions, 9914 events. 4893/9914 cut-off events. For 372300/372300 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 86789 event pairs, 84 based on Foata normal form. 46/9959 useless extension candidates. Maximal degree in co-relation 123639. Up to 3734 conditions per place. [2023-01-28 12:04:38,199 INFO L137 encePairwiseOnDemand]: 323/330 looper letters, 1195 selfloop transitions, 1065 changer transitions 4/2264 dead transitions. [2023-01-28 12:04:38,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 2264 transitions, 72473 flow [2023-01-28 12:04:38,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-01-28 12:04:38,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-01-28 12:04:38,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 4721 transitions. [2023-01-28 12:04:38,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3973905723905724 [2023-01-28 12:04:38,204 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 4721 transitions. [2023-01-28 12:04:38,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 4721 transitions. [2023-01-28 12:04:38,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:04:38,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 4721 transitions. [2023-01-28 12:04:38,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 131.13888888888889) internal successors, (4721), 36 states have internal predecessors, (4721), 0 states have call successors, (0), 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 12:04:38,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 330.0) internal successors, (12210), 37 states have internal predecessors, (12210), 0 states have call successors, (0), 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 12:04:38,216 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 330.0) internal successors, (12210), 37 states have internal predecessors, (12210), 0 states have call successors, (0), 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 12:04:38,217 INFO L175 Difference]: Start difference. First operand has 592 places, 2094 transitions, 64816 flow. Second operand 36 states and 4721 transitions. [2023-01-28 12:04:38,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 2264 transitions, 72473 flow [2023-01-28 12:04:47,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 2264 transitions, 71644 flow, removed 79 selfloop flow, removed 8 redundant places. [2023-01-28 12:04:47,523 INFO L231 Difference]: Finished difference. Result has 632 places, 2172 transitions, 68651 flow [2023-01-28 12:04:47,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=63852, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2087, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=992, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1064, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=68651, PETRI_PLACES=632, PETRI_TRANSITIONS=2172} [2023-01-28 12:04:47,526 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 611 predicate places. [2023-01-28 12:04:47,526 INFO L495 AbstractCegarLoop]: Abstraction has has 632 places, 2172 transitions, 68651 flow [2023-01-28 12:04:47,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 128.11111111111111) internal successors, (2306), 18 states have internal predecessors, (2306), 0 states have call successors, (0), 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 12:04:47,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:04:47,526 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:04:47,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-01-28 12:04:47,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:04:47,727 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:04:47,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:04:47,728 INFO L85 PathProgramCache]: Analyzing trace with hash -662084278, now seen corresponding path program 25 times [2023-01-28 12:04:47,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:04:47,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777709559] [2023-01-28 12:04:47,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:04:47,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:04:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:04:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:04:47,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:04:47,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777709559] [2023-01-28 12:04:47,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777709559] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:04:47,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587941405] [2023-01-28 12:04:47,874 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 12:04:47,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:04:47,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:04:47,875 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:04:47,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-01-28 12:04:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:04:47,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:04:47,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:04:48,014 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:04:48,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:04:48,134 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:04:48,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587941405] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:04:48,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:04:48,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2023-01-28 12:04:48,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702492424] [2023-01-28 12:04:48,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:04:48,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 12:04:48,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:04:48,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 12:04:48,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-01-28 12:04:48,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:04:48,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 632 places, 2172 transitions, 68651 flow. Second operand has 17 states, 17 states have (on average 127.82352941176471) internal successors, (2173), 17 states have internal predecessors, (2173), 0 states have call successors, (0), 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 12:04:48,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:04:48,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:04:48,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:04:56,715 INFO L130 PetriNetUnfolder]: 5051/10207 cut-off events. [2023-01-28 12:04:56,716 INFO L131 PetriNetUnfolder]: For 420030/420030 co-relation queries the response was YES. [2023-01-28 12:04:56,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131388 conditions, 10207 events. 5051/10207 cut-off events. For 420030/420030 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 89606 event pairs, 143 based on Foata normal form. 32/10238 useless extension candidates. Maximal degree in co-relation 130883. Up to 8076 conditions per place. [2023-01-28 12:04:56,861 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 1748 selfloop transitions, 551 changer transitions 0/2299 dead transitions. [2023-01-28 12:04:56,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 2299 transitions, 76055 flow [2023-01-28 12:04:56,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 12:04:56,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 12:04:56,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3167 transitions. [2023-01-28 12:04:56,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3998737373737374 [2023-01-28 12:04:56,864 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3167 transitions. [2023-01-28 12:04:56,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3167 transitions. [2023-01-28 12:04:56,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:04:56,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3167 transitions. [2023-01-28 12:04:56,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 131.95833333333334) internal successors, (3167), 24 states have internal predecessors, (3167), 0 states have call successors, (0), 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 12:04:56,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 330.0) internal successors, (8250), 25 states have internal predecessors, (8250), 0 states have call successors, (0), 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 12:04:56,869 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 330.0) internal successors, (8250), 25 states have internal predecessors, (8250), 0 states have call successors, (0), 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 12:04:56,869 INFO L175 Difference]: Start difference. First operand has 632 places, 2172 transitions, 68651 flow. Second operand 24 states and 3167 transitions. [2023-01-28 12:04:56,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 2299 transitions, 76055 flow [2023-01-28 12:05:07,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 2299 transitions, 72432 flow, removed 607 selfloop flow, removed 18 redundant places. [2023-01-28 12:05:07,080 INFO L231 Difference]: Finished difference. Result has 648 places, 2212 transitions, 68295 flow [2023-01-28 12:05:07,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=65546, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=516, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=68295, PETRI_PLACES=648, PETRI_TRANSITIONS=2212} [2023-01-28 12:05:07,083 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 627 predicate places. [2023-01-28 12:05:07,083 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 2212 transitions, 68295 flow [2023-01-28 12:05:07,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 127.82352941176471) internal successors, (2173), 17 states have internal predecessors, (2173), 0 states have call successors, (0), 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 12:05:07,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:05:07,084 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:05:07,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-01-28 12:05:07,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:05:07,290 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:05:07,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:05:07,290 INFO L85 PathProgramCache]: Analyzing trace with hash 455510348, now seen corresponding path program 26 times [2023-01-28 12:05:07,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:05:07,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826775169] [2023-01-28 12:05:07,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:05:07,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:05:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:05:07,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:05:07,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826775169] [2023-01-28 12:05:07,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826775169] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:05:07,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784765966] [2023-01-28 12:05:07,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:05:07,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:05:07,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:05:07,465 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:05:07,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-01-28 12:05:07,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:05:07,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:05:07,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:05:07,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:05:07,699 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:05:07,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:05:07,796 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:05:07,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784765966] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:05:07,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:05:07,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-01-28 12:05:07,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279918841] [2023-01-28 12:05:07,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:05:07,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 12:05:07,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:05:07,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 12:05:07,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-01-28 12:05:07,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:05:07,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 2212 transitions, 68295 flow. Second operand has 17 states, 17 states have (on average 128.1764705882353) internal successors, (2179), 17 states have internal predecessors, (2179), 0 states have call successors, (0), 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 12:05:07,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:05:07,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:05:07,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:05:18,338 INFO L130 PetriNetUnfolder]: 5350/10934 cut-off events. [2023-01-28 12:05:18,338 INFO L131 PetriNetUnfolder]: For 452720/452720 co-relation queries the response was YES. [2023-01-28 12:05:18,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137679 conditions, 10934 events. 5350/10934 cut-off events. For 452720/452720 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 97703 event pairs, 84 based on Foata normal form. 74/11007 useless extension candidates. Maximal degree in co-relation 137166. Up to 5446 conditions per place. [2023-01-28 12:05:18,510 INFO L137 encePairwiseOnDemand]: 323/330 looper letters, 1596 selfloop transitions, 822 changer transitions 6/2424 dead transitions. [2023-01-28 12:05:18,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 2424 transitions, 77974 flow [2023-01-28 12:05:18,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-01-28 12:05:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-01-28 12:05:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3695 transitions. [2023-01-28 12:05:18,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3998917748917749 [2023-01-28 12:05:18,513 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3695 transitions. [2023-01-28 12:05:18,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3695 transitions. [2023-01-28 12:05:18,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:05:18,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3695 transitions. [2023-01-28 12:05:18,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 131.96428571428572) internal successors, (3695), 28 states have internal predecessors, (3695), 0 states have call successors, (0), 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 12:05:18,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 330.0) internal successors, (9570), 29 states have internal predecessors, (9570), 0 states have call successors, (0), 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 12:05:18,519 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 330.0) internal successors, (9570), 29 states have internal predecessors, (9570), 0 states have call successors, (0), 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 12:05:18,519 INFO L175 Difference]: Start difference. First operand has 648 places, 2212 transitions, 68295 flow. Second operand 28 states and 3695 transitions. [2023-01-28 12:05:18,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 2424 transitions, 77974 flow [2023-01-28 12:05:28,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 665 places, 2424 transitions, 77267 flow, removed 193 selfloop flow, removed 9 redundant places. [2023-01-28 12:05:28,918 INFO L231 Difference]: Finished difference. Result has 673 places, 2309 transitions, 73352 flow [2023-01-28 12:05:28,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=67464, PETRI_DIFFERENCE_MINUEND_PLACES=638, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=724, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=73352, PETRI_PLACES=673, PETRI_TRANSITIONS=2309} [2023-01-28 12:05:28,920 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 652 predicate places. [2023-01-28 12:05:28,920 INFO L495 AbstractCegarLoop]: Abstraction has has 673 places, 2309 transitions, 73352 flow [2023-01-28 12:05:28,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 128.1764705882353) internal successors, (2179), 17 states have internal predecessors, (2179), 0 states have call successors, (0), 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 12:05:28,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:05:28,921 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:05:28,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-01-28 12:05:29,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:05:29,121 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:05:29,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:05:29,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1666233606, now seen corresponding path program 27 times [2023-01-28 12:05:29,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:05:29,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190623860] [2023-01-28 12:05:29,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:05:29,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:05:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:29,299 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:05:29,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:05:29,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190623860] [2023-01-28 12:05:29,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190623860] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:05:29,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723855352] [2023-01-28 12:05:29,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 12:05:29,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:05:29,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:05:29,311 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:05:29,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-01-28 12:05:29,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-28 12:05:29,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:05:29,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:05:29,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:05:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:05:29,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:05:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:05:29,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723855352] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:05:29,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:05:29,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-01-28 12:05:29,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75624957] [2023-01-28 12:05:29,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:05:29,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 12:05:29,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:05:29,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 12:05:29,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-01-28 12:05:29,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:05:29,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 2309 transitions, 73352 flow. Second operand has 18 states, 18 states have (on average 128.22222222222223) internal successors, (2308), 18 states have internal predecessors, (2308), 0 states have call successors, (0), 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 12:05:29,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:05:29,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:05:29,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:05:40,791 INFO L130 PetriNetUnfolder]: 5390/10987 cut-off events. [2023-01-28 12:05:40,791 INFO L131 PetriNetUnfolder]: For 505097/505097 co-relation queries the response was YES. [2023-01-28 12:05:40,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143014 conditions, 10987 events. 5390/10987 cut-off events. For 505097/505097 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 98147 event pairs, 1471 based on Foata normal form. 20/11006 useless extension candidates. Maximal degree in co-relation 142565. Up to 7179 conditions per place. [2023-01-28 12:05:40,972 INFO L137 encePairwiseOnDemand]: 323/330 looper letters, 1958 selfloop transitions, 455 changer transitions 0/2413 dead transitions. [2023-01-28 12:05:40,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 2413 transitions, 80165 flow [2023-01-28 12:05:40,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 12:05:40,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 12:05:40,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3157 transitions. [2023-01-28 12:05:40,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39861111111111114 [2023-01-28 12:05:40,975 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3157 transitions. [2023-01-28 12:05:40,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3157 transitions. [2023-01-28 12:05:40,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:05:40,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3157 transitions. [2023-01-28 12:05:40,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 131.54166666666666) internal successors, (3157), 24 states have internal predecessors, (3157), 0 states have call successors, (0), 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 12:05:40,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 330.0) internal successors, (8250), 25 states have internal predecessors, (8250), 0 states have call successors, (0), 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 12:05:40,981 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 330.0) internal successors, (8250), 25 states have internal predecessors, (8250), 0 states have call successors, (0), 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 12:05:40,981 INFO L175 Difference]: Start difference. First operand has 673 places, 2309 transitions, 73352 flow. Second operand 24 states and 3157 transitions. [2023-01-28 12:05:40,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 2413 transitions, 80165 flow [2023-01-28 12:05:53,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 2413 transitions, 78467 flow, removed 661 selfloop flow, removed 16 redundant places. [2023-01-28 12:05:53,227 INFO L231 Difference]: Finished difference. Result has 687 places, 2341 transitions, 74105 flow [2023-01-28 12:05:53,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=71586, PETRI_DIFFERENCE_MINUEND_PLACES=656, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=422, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1867, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=74105, PETRI_PLACES=687, PETRI_TRANSITIONS=2341} [2023-01-28 12:05:53,230 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 666 predicate places. [2023-01-28 12:05:53,230 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 2341 transitions, 74105 flow [2023-01-28 12:05:53,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 128.22222222222223) internal successors, (2308), 18 states have internal predecessors, (2308), 0 states have call successors, (0), 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 12:05:53,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:05:53,230 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:05:53,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-01-28 12:05:53,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-01-28 12:05:53,431 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:05:53,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:05:53,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1958411046, now seen corresponding path program 28 times [2023-01-28 12:05:53,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:05:53,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976847084] [2023-01-28 12:05:53,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:05:53,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:05:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:05:53,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:05:53,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976847084] [2023-01-28 12:05:53,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976847084] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:05:53,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26622740] [2023-01-28 12:05:53,567 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 12:05:53,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:05:53,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:05:53,568 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:05:53,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-01-28 12:05:53,672 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 12:05:53,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:05:53,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:05:53,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:05:53,714 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:05:53,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:05:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:05:53,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26622740] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:05:53,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:05:53,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2023-01-28 12:05:53,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354133062] [2023-01-28 12:05:53,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:05:53,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 12:05:53,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:05:53,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 12:05:53,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-01-28 12:05:53,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:05:53,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 2341 transitions, 74105 flow. Second operand has 17 states, 17 states have (on average 127.82352941176471) internal successors, (2173), 17 states have internal predecessors, (2173), 0 states have call successors, (0), 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 12:05:53,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:05:53,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:05:53,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:06:04,543 INFO L130 PetriNetUnfolder]: 5551/11270 cut-off events. [2023-01-28 12:06:04,543 INFO L131 PetriNetUnfolder]: For 502268/502268 co-relation queries the response was YES. [2023-01-28 12:06:04,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144416 conditions, 11270 events. 5551/11270 cut-off events. For 502268/502268 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 100640 event pairs, 1461 based on Foata normal form. 22/11291 useless extension candidates. Maximal degree in co-relation 143950. Up to 6575 conditions per place. [2023-01-28 12:06:04,708 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 2001 selfloop transitions, 459 changer transitions 4/2464 dead transitions. [2023-01-28 12:06:04,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 705 places, 2464 transitions, 81765 flow [2023-01-28 12:06:04,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 12:06:04,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 12:06:04,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2621 transitions. [2023-01-28 12:06:04,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3971212121212121 [2023-01-28 12:06:04,711 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2621 transitions. [2023-01-28 12:06:04,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2621 transitions. [2023-01-28 12:06:04,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:06:04,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2621 transitions. [2023-01-28 12:06:04,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 131.05) internal successors, (2621), 20 states have internal predecessors, (2621), 0 states have call successors, (0), 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 12:06:04,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 330.0) internal successors, (6930), 21 states have internal predecessors, (6930), 0 states have call successors, (0), 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 12:06:04,717 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 330.0) internal successors, (6930), 21 states have internal predecessors, (6930), 0 states have call successors, (0), 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 12:06:04,717 INFO L175 Difference]: Start difference. First operand has 687 places, 2341 transitions, 74105 flow. Second operand 20 states and 2621 transitions. [2023-01-28 12:06:04,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 705 places, 2464 transitions, 81765 flow [2023-01-28 12:06:15,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 690 places, 2464 transitions, 80641 flow, removed 255 selfloop flow, removed 15 redundant places. [2023-01-28 12:06:15,724 INFO L231 Difference]: Finished difference. Result has 698 places, 2391 transitions, 76154 flow [2023-01-28 12:06:15,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=72784, PETRI_DIFFERENCE_MINUEND_PLACES=671, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=398, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1889, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=76154, PETRI_PLACES=698, PETRI_TRANSITIONS=2391} [2023-01-28 12:06:15,726 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 677 predicate places. [2023-01-28 12:06:15,726 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 2391 transitions, 76154 flow [2023-01-28 12:06:15,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 127.82352941176471) internal successors, (2173), 17 states have internal predecessors, (2173), 0 states have call successors, (0), 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 12:06:15,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:06:15,727 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:06:15,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-01-28 12:06:15,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:06:15,927 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:06:15,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:06:15,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1102504238, now seen corresponding path program 29 times [2023-01-28 12:06:15,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:06:15,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551034979] [2023-01-28 12:06:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:06:15,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:06:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:06:16,073 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:06:16,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:06:16,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551034979] [2023-01-28 12:06:16,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551034979] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:06:16,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87138644] [2023-01-28 12:06:16,074 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 12:06:16,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:06:16,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:06:16,077 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:06:16,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-01-28 12:06:16,238 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 12:06:16,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:06:16,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 12:06:16,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:06:16,298 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:06:16,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:06:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:06:16,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87138644] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:06:16,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:06:16,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-01-28 12:06:16,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910575701] [2023-01-28 12:06:16,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:06:16,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 12:06:16,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:06:16,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 12:06:16,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-01-28 12:06:16,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:06:16,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 2391 transitions, 76154 flow. Second operand has 18 states, 18 states have (on average 127.88888888888889) internal successors, (2302), 18 states have internal predecessors, (2302), 0 states have call successors, (0), 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 12:06:16,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:06:16,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:06:16,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:06:27,875 INFO L130 PetriNetUnfolder]: 5812/11863 cut-off events. [2023-01-28 12:06:27,875 INFO L131 PetriNetUnfolder]: For 560836/560836 co-relation queries the response was YES. [2023-01-28 12:06:28,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152493 conditions, 11863 events. 5812/11863 cut-off events. For 560836/560836 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 107472 event pairs, 1480 based on Foata normal form. 14/11876 useless extension candidates. Maximal degree in co-relation 152022. Up to 6513 conditions per place. [2023-01-28 12:06:28,076 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 1981 selfloop transitions, 573 changer transitions 13/2567 dead transitions. [2023-01-28 12:06:28,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 715 places, 2567 transitions, 85226 flow [2023-01-28 12:06:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 12:06:28,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 12:06:28,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2761 transitions. [2023-01-28 12:06:28,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984126984126984 [2023-01-28 12:06:28,079 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2761 transitions. [2023-01-28 12:06:28,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2761 transitions. [2023-01-28 12:06:28,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:06:28,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2761 transitions. [2023-01-28 12:06:28,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 131.47619047619048) internal successors, (2761), 21 states have internal predecessors, (2761), 0 states have call successors, (0), 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 12:06:28,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 330.0) internal successors, (7260), 22 states have internal predecessors, (7260), 0 states have call successors, (0), 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 12:06:28,086 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 330.0) internal successors, (7260), 22 states have internal predecessors, (7260), 0 states have call successors, (0), 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 12:06:28,086 INFO L175 Difference]: Start difference. First operand has 698 places, 2391 transitions, 76154 flow. Second operand 21 states and 2761 transitions. [2023-01-28 12:06:28,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 715 places, 2567 transitions, 85226 flow [2023-01-28 12:06:39,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 2567 transitions, 84825 flow, removed 159 selfloop flow, removed 6 redundant places. [2023-01-28 12:06:39,988 INFO L231 Difference]: Finished difference. Result has 716 places, 2464 transitions, 79724 flow [2023-01-28 12:06:39,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=75681, PETRI_DIFFERENCE_MINUEND_PLACES=689, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=497, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1841, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=79724, PETRI_PLACES=716, PETRI_TRANSITIONS=2464} [2023-01-28 12:06:39,990 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 695 predicate places. [2023-01-28 12:06:39,990 INFO L495 AbstractCegarLoop]: Abstraction has has 716 places, 2464 transitions, 79724 flow [2023-01-28 12:06:39,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 127.88888888888889) internal successors, (2302), 18 states have internal predecessors, (2302), 0 states have call successors, (0), 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 12:06:39,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:06:39,991 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:06:39,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-01-28 12:06:40,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:06:40,199 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:06:40,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:06:40,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1301645282, now seen corresponding path program 30 times [2023-01-28 12:06:40,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:06:40,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701696045] [2023-01-28 12:06:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:06:40,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:06:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:06:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:06:40,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:06:40,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701696045] [2023-01-28 12:06:40,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701696045] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:06:40,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190076476] [2023-01-28 12:06:40,346 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 12:06:40,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:06:40,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:06:40,348 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:06:40,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-01-28 12:06:40,569 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 12:06:40,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:06:40,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:06:40,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:06:40,628 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:06:40,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:06:40,729 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:06:40,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190076476] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:06:40,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:06:40,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-01-28 12:06:40,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816838785] [2023-01-28 12:06:40,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:06:40,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 12:06:40,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:06:40,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 12:06:40,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-01-28 12:06:40,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:06:40,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 716 places, 2464 transitions, 79724 flow. Second operand has 18 states, 18 states have (on average 127.77777777777777) internal successors, (2300), 18 states have internal predecessors, (2300), 0 states have call successors, (0), 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 12:06:40,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:06:40,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:06:40,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:06:52,008 INFO L130 PetriNetUnfolder]: 5848/11929 cut-off events. [2023-01-28 12:06:52,009 INFO L131 PetriNetUnfolder]: For 601137/601137 co-relation queries the response was YES. [2023-01-28 12:06:52,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157369 conditions, 11929 events. 5848/11929 cut-off events. For 601137/601137 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 108243 event pairs, 1612 based on Foata normal form. 6/11934 useless extension candidates. Maximal degree in co-relation 156932. Up to 6820 conditions per place. [2023-01-28 12:06:52,213 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 2152 selfloop transitions, 386 changer transitions 6/2544 dead transitions. [2023-01-28 12:06:52,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 733 places, 2544 transitions, 86651 flow [2023-01-28 12:06:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 12:06:52,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 12:06:52,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2485 transitions. [2023-01-28 12:06:52,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3963317384370016 [2023-01-28 12:06:52,215 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2485 transitions. [2023-01-28 12:06:52,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2485 transitions. [2023-01-28 12:06:52,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:06:52,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2485 transitions. [2023-01-28 12:06:52,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 130.78947368421052) internal successors, (2485), 19 states have internal predecessors, (2485), 0 states have call successors, (0), 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 12:06:52,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 330.0) internal successors, (6600), 20 states have internal predecessors, (6600), 0 states have call successors, (0), 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 12:06:52,221 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 330.0) internal successors, (6600), 20 states have internal predecessors, (6600), 0 states have call successors, (0), 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 12:06:52,221 INFO L175 Difference]: Start difference. First operand has 716 places, 2464 transitions, 79724 flow. Second operand 19 states and 2485 transitions. [2023-01-28 12:06:52,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 733 places, 2544 transitions, 86651 flow [2023-01-28 12:07:04,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 726 places, 2544 transitions, 86463 flow, removed 34 selfloop flow, removed 7 redundant places. [2023-01-28 12:07:04,927 INFO L231 Difference]: Finished difference. Result has 731 places, 2474 transitions, 81146 flow [2023-01-28 12:07:04,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=79416, PETRI_DIFFERENCE_MINUEND_PLACES=708, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=369, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2080, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=81146, PETRI_PLACES=731, PETRI_TRANSITIONS=2474} [2023-01-28 12:07:04,929 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 710 predicate places. [2023-01-28 12:07:04,929 INFO L495 AbstractCegarLoop]: Abstraction has has 731 places, 2474 transitions, 81146 flow [2023-01-28 12:07:04,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 127.77777777777777) internal successors, (2300), 18 states have internal predecessors, (2300), 0 states have call successors, (0), 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 12:07:04,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:07:04,930 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:07:04,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-01-28 12:07:05,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-01-28 12:07:05,131 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:07:05,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:07:05,131 INFO L85 PathProgramCache]: Analyzing trace with hash 593094662, now seen corresponding path program 31 times [2023-01-28 12:07:05,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:07:05,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406351360] [2023-01-28 12:07:05,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:07:05,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:07:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:07:05,269 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:07:05,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:07:05,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406351360] [2023-01-28 12:07:05,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406351360] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:07:05,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973380593] [2023-01-28 12:07:05,270 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 12:07:05,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:07:05,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:07:05,271 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:07:05,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-01-28 12:07:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:07:05,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:07:05,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:07:05,451 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:07:05,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:07:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:07:05,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973380593] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:07:05,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:07:05,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-01-28 12:07:05,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253779256] [2023-01-28 12:07:05,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:07:05,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 12:07:05,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:07:05,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 12:07:05,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-01-28 12:07:05,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:07:05,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 731 places, 2474 transitions, 81146 flow. Second operand has 16 states, 16 states have (on average 128.375) internal successors, (2054), 16 states have internal predecessors, (2054), 0 states have call successors, (0), 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 12:07:05,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:07:05,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:07:05,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:07:16,617 INFO L130 PetriNetUnfolder]: 5912/12028 cut-off events. [2023-01-28 12:07:16,618 INFO L131 PetriNetUnfolder]: For 643271/643271 co-relation queries the response was YES. [2023-01-28 12:07:16,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161848 conditions, 12028 events. 5912/12028 cut-off events. For 643271/643271 co-relation queries the response was YES. Maximal size of possible extension queue 861. Compared 109080 event pairs, 2226 based on Foata normal form. 42/12069 useless extension candidates. Maximal degree in co-relation 161390. Up to 11153 conditions per place. [2023-01-28 12:07:16,816 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 2291 selfloop transitions, 281 changer transitions 0/2572 dead transitions. [2023-01-28 12:07:16,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 751 places, 2572 transitions, 88180 flow [2023-01-28 12:07:16,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 12:07:16,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 12:07:16,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3020 transitions. [2023-01-28 12:07:16,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39789196310935443 [2023-01-28 12:07:16,819 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3020 transitions. [2023-01-28 12:07:16,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3020 transitions. [2023-01-28 12:07:16,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:07:16,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3020 transitions. [2023-01-28 12:07:16,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 131.30434782608697) internal successors, (3020), 23 states have internal predecessors, (3020), 0 states have call successors, (0), 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 12:07:16,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 330.0) internal successors, (7920), 24 states have internal predecessors, (7920), 0 states have call successors, (0), 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 12:07:16,827 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 330.0) internal successors, (7920), 24 states have internal predecessors, (7920), 0 states have call successors, (0), 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 12:07:16,827 INFO L175 Difference]: Start difference. First operand has 731 places, 2474 transitions, 81146 flow. Second operand 23 states and 3020 transitions. [2023-01-28 12:07:16,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 751 places, 2572 transitions, 88180 flow [2023-01-28 12:07:29,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 740 places, 2572 transitions, 87780 flow, removed 83 selfloop flow, removed 11 redundant places. [2023-01-28 12:07:29,686 INFO L231 Difference]: Finished difference. Result has 747 places, 2501 transitions, 82378 flow [2023-01-28 12:07:29,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=80627, PETRI_DIFFERENCE_MINUEND_PLACES=718, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=82378, PETRI_PLACES=747, PETRI_TRANSITIONS=2501} [2023-01-28 12:07:29,688 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 726 predicate places. [2023-01-28 12:07:29,688 INFO L495 AbstractCegarLoop]: Abstraction has has 747 places, 2501 transitions, 82378 flow [2023-01-28 12:07:29,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 128.375) internal successors, (2054), 16 states have internal predecessors, (2054), 0 states have call successors, (0), 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 12:07:29,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:07:29,688 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:07:29,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-01-28 12:07:29,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-01-28 12:07:29,889 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:07:29,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:07:29,889 INFO L85 PathProgramCache]: Analyzing trace with hash -965583348, now seen corresponding path program 32 times [2023-01-28 12:07:29,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:07:29,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114031074] [2023-01-28 12:07:29,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:07:29,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:07:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:07:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:07:30,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:07:30,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114031074] [2023-01-28 12:07:30,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114031074] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:07:30,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989010603] [2023-01-28 12:07:30,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:07:30,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:07:30,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:07:30,047 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:07:30,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-01-28 12:07:30,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:07:30,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:07:30,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:07:30,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:07:30,236 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:07:30,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:07:30,318 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:07:30,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989010603] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:07:30,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:07:30,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-01-28 12:07:30,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553140284] [2023-01-28 12:07:30,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:07:30,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 12:07:30,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:07:30,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 12:07:30,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-01-28 12:07:30,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:07:30,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 747 places, 2501 transitions, 82378 flow. Second operand has 16 states, 16 states have (on average 128.1875) internal successors, (2051), 16 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 12:07:30,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:07:30,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:07:30,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:07:42,435 INFO L130 PetriNetUnfolder]: 6050/12288 cut-off events. [2023-01-28 12:07:42,435 INFO L131 PetriNetUnfolder]: For 669917/669917 co-relation queries the response was YES. [2023-01-28 12:07:42,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165848 conditions, 12288 events. 6050/12288 cut-off events. For 669917/669917 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 111676 event pairs, 2339 based on Foata normal form. 46/12333 useless extension candidates. Maximal degree in co-relation 165393. Up to 11670 conditions per place. [2023-01-28 12:07:42,630 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 2442 selfloop transitions, 195 changer transitions 0/2637 dead transitions. [2023-01-28 12:07:42,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 775 places, 2637 transitions, 90825 flow [2023-01-28 12:07:42,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-28 12:07:42,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-01-28 12:07:42,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3815 transitions. [2023-01-28 12:07:42,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3986415882967607 [2023-01-28 12:07:42,633 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3815 transitions. [2023-01-28 12:07:42,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3815 transitions. [2023-01-28 12:07:42,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:07:42,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3815 transitions. [2023-01-28 12:07:42,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 131.55172413793105) internal successors, (3815), 29 states have internal predecessors, (3815), 0 states have call successors, (0), 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 12:07:42,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 330.0) internal successors, (9900), 30 states have internal predecessors, (9900), 0 states have call successors, (0), 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 12:07:42,640 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 330.0) internal successors, (9900), 30 states have internal predecessors, (9900), 0 states have call successors, (0), 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 12:07:42,640 INFO L175 Difference]: Start difference. First operand has 747 places, 2501 transitions, 82378 flow. Second operand 29 states and 3815 transitions. [2023-01-28 12:07:42,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 775 places, 2637 transitions, 90825 flow [2023-01-28 12:07:56,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 767 places, 2637 transitions, 90430 flow, removed 130 selfloop flow, removed 8 redundant places. [2023-01-28 12:07:56,518 INFO L231 Difference]: Finished difference. Result has 783 places, 2550 transitions, 84589 flow [2023-01-28 12:07:56,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=81933, PETRI_DIFFERENCE_MINUEND_PLACES=739, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=84589, PETRI_PLACES=783, PETRI_TRANSITIONS=2550} [2023-01-28 12:07:56,521 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 762 predicate places. [2023-01-28 12:07:56,521 INFO L495 AbstractCegarLoop]: Abstraction has has 783 places, 2550 transitions, 84589 flow [2023-01-28 12:07:56,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 128.1875) internal successors, (2051), 16 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 12:07:56,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:07:56,521 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:07:56,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-01-28 12:07:56,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-01-28 12:07:56,722 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:07:56,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:07:56,723 INFO L85 PathProgramCache]: Analyzing trace with hash 894937826, now seen corresponding path program 33 times [2023-01-28 12:07:56,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:07:56,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916777013] [2023-01-28 12:07:56,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:07:56,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:07:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:07:56,888 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:07:56,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:07:56,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916777013] [2023-01-28 12:07:56,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916777013] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:07:56,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535780963] [2023-01-28 12:07:56,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 12:07:56,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:07:56,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:07:56,890 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:07:56,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-01-28 12:07:57,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-28 12:07:57,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:07:57,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:07:57,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:07:57,119 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:07:57,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:07:57,255 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:07:57,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535780963] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:07:57,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:07:57,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-01-28 12:07:57,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220354760] [2023-01-28 12:07:57,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:07:57,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 12:07:57,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:07:57,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 12:07:57,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-01-28 12:07:57,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:07:57,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 783 places, 2550 transitions, 84589 flow. Second operand has 18 states, 18 states have (on average 128.11111111111111) internal successors, (2306), 18 states have internal predecessors, (2306), 0 states have call successors, (0), 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 12:07:57,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:07:57,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:07:57,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:08:09,788 INFO L130 PetriNetUnfolder]: 6085/12383 cut-off events. [2023-01-28 12:08:09,788 INFO L131 PetriNetUnfolder]: For 707220/707220 co-relation queries the response was YES. [2023-01-28 12:08:10,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168786 conditions, 12383 events. 6085/12383 cut-off events. For 707220/707220 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 112811 event pairs, 1786 based on Foata normal form. 38/12420 useless extension candidates. Maximal degree in co-relation 168402. Up to 8528 conditions per place. [2023-01-28 12:08:10,109 INFO L137 encePairwiseOnDemand]: 323/330 looper letters, 2236 selfloop transitions, 400 changer transitions 1/2637 dead transitions. [2023-01-28 12:08:10,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 803 places, 2637 transitions, 91789 flow [2023-01-28 12:08:10,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 12:08:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 12:08:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3023 transitions. [2023-01-28 12:08:10,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3982872200263505 [2023-01-28 12:08:10,111 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3023 transitions. [2023-01-28 12:08:10,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3023 transitions. [2023-01-28 12:08:10,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:08:10,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3023 transitions. [2023-01-28 12:08:10,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 131.43478260869566) internal successors, (3023), 23 states have internal predecessors, (3023), 0 states have call successors, (0), 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 12:08:10,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 330.0) internal successors, (7920), 24 states have internal predecessors, (7920), 0 states have call successors, (0), 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 12:08:10,117 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 330.0) internal successors, (7920), 24 states have internal predecessors, (7920), 0 states have call successors, (0), 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 12:08:10,117 INFO L175 Difference]: Start difference. First operand has 783 places, 2550 transitions, 84589 flow. Second operand 23 states and 3023 transitions. [2023-01-28 12:08:10,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 803 places, 2637 transitions, 91789 flow [2023-01-28 12:08:25,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 2637 transitions, 91082 flow, removed 271 selfloop flow, removed 11 redundant places. [2023-01-28 12:08:25,447 INFO L231 Difference]: Finished difference. Result has 798 places, 2569 transitions, 85838 flow [2023-01-28 12:08:25,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=83683, PETRI_DIFFERENCE_MINUEND_PLACES=770, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=379, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=85838, PETRI_PLACES=798, PETRI_TRANSITIONS=2569} [2023-01-28 12:08:25,448 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 777 predicate places. [2023-01-28 12:08:25,448 INFO L495 AbstractCegarLoop]: Abstraction has has 798 places, 2569 transitions, 85838 flow [2023-01-28 12:08:25,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 128.11111111111111) internal successors, (2306), 18 states have internal predecessors, (2306), 0 states have call successors, (0), 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 12:08:25,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:08:25,449 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:08:25,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-01-28 12:08:25,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-01-28 12:08:25,650 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:08:25,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:08:25,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1864351080, now seen corresponding path program 34 times [2023-01-28 12:08:25,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:08:25,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477266869] [2023-01-28 12:08:25,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:08:25,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:08:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:08:25,787 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:08:25,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:08:25,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477266869] [2023-01-28 12:08:25,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477266869] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:08:25,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043885815] [2023-01-28 12:08:25,788 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 12:08:25,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:08:25,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:08:25,793 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:08:25,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-01-28 12:08:25,919 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 12:08:25,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:08:25,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:08:25,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:08:25,976 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:08:25,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:08:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:08:26,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043885815] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:08:26,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:08:26,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-01-28 12:08:26,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607767503] [2023-01-28 12:08:26,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:08:26,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 12:08:26,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:08:26,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 12:08:26,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-01-28 12:08:26,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:08:26,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 798 places, 2569 transitions, 85838 flow. Second operand has 18 states, 18 states have (on average 127.77777777777777) internal successors, (2300), 18 states have internal predecessors, (2300), 0 states have call successors, (0), 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 12:08:26,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:08:26,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:08:26,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:08:40,674 INFO L130 PetriNetUnfolder]: 6093/12405 cut-off events. [2023-01-28 12:08:40,674 INFO L131 PetriNetUnfolder]: For 731072/731072 co-relation queries the response was YES. [2023-01-28 12:08:40,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170824 conditions, 12405 events. 6093/12405 cut-off events. For 731072/731072 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 113034 event pairs, 1754 based on Foata normal form. 18/12422 useless extension candidates. Maximal degree in co-relation 170343. Up to 7312 conditions per place. [2023-01-28 12:08:40,890 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 2293 selfloop transitions, 341 changer transitions 12/2646 dead transitions. [2023-01-28 12:08:40,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 819 places, 2646 transitions, 93209 flow [2023-01-28 12:08:40,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 12:08:40,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 12:08:40,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2872 transitions. [2023-01-28 12:08:40,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3955922865013774 [2023-01-28 12:08:40,893 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2872 transitions. [2023-01-28 12:08:40,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2872 transitions. [2023-01-28 12:08:40,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:08:40,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2872 transitions. [2023-01-28 12:08:40,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 130.54545454545453) internal successors, (2872), 22 states have internal predecessors, (2872), 0 states have call successors, (0), 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 12:08:40,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 330.0) internal successors, (7590), 23 states have internal predecessors, (7590), 0 states have call successors, (0), 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 12:08:40,901 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 330.0) internal successors, (7590), 23 states have internal predecessors, (7590), 0 states have call successors, (0), 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 12:08:40,901 INFO L175 Difference]: Start difference. First operand has 798 places, 2569 transitions, 85838 flow. Second operand 22 states and 2872 transitions. [2023-01-28 12:08:40,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 819 places, 2646 transitions, 93209 flow [2023-01-28 12:08:56,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 2646 transitions, 92283 flow, removed 406 selfloop flow, removed 7 redundant places. [2023-01-28 12:08:56,193 INFO L231 Difference]: Finished difference. Result has 818 places, 2573 transitions, 86679 flow [2023-01-28 12:08:56,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=84972, PETRI_DIFFERENCE_MINUEND_PLACES=791, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=324, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=86679, PETRI_PLACES=818, PETRI_TRANSITIONS=2573} [2023-01-28 12:08:56,195 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 797 predicate places. [2023-01-28 12:08:56,195 INFO L495 AbstractCegarLoop]: Abstraction has has 818 places, 2573 transitions, 86679 flow [2023-01-28 12:08:56,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 127.77777777777777) internal successors, (2300), 18 states have internal predecessors, (2300), 0 states have call successors, (0), 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 12:08:56,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:08:56,196 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:08:56,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-01-28 12:08:56,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:08:56,396 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:08:56,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:08:56,397 INFO L85 PathProgramCache]: Analyzing trace with hash -2029900146, now seen corresponding path program 35 times [2023-01-28 12:08:56,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:08:56,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981507223] [2023-01-28 12:08:56,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:08:56,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:08:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:08:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:08:56,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:08:56,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981507223] [2023-01-28 12:08:56,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981507223] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:08:56,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019668552] [2023-01-28 12:08:56,572 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 12:08:56,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:08:56,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:08:56,577 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:08:56,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-01-28 12:08:56,725 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 12:08:56,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:08:56,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:08:56,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:08:56,788 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:08:56,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:08:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:08:56,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019668552] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:08:56,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:08:56,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-01-28 12:08:56,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612864823] [2023-01-28 12:08:56,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:08:56,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 12:08:56,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:08:56,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 12:08:56,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-01-28 12:08:56,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:08:56,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 818 places, 2573 transitions, 86679 flow. Second operand has 17 states, 17 states have (on average 128.05882352941177) internal successors, (2177), 17 states have internal predecessors, (2177), 0 states have call successors, (0), 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 12:08:56,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:08:56,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:08:56,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:09:10,250 INFO L130 PetriNetUnfolder]: 6176/12539 cut-off events. [2023-01-28 12:09:10,250 INFO L131 PetriNetUnfolder]: For 784317/784317 co-relation queries the response was YES. [2023-01-28 12:09:10,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175294 conditions, 12539 events. 6176/12539 cut-off events. For 784317/784317 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 114274 event pairs, 1710 based on Foata normal form. 78/12616 useless extension candidates. Maximal degree in co-relation 174791. Up to 8182 conditions per place. [2023-01-28 12:09:10,476 INFO L137 encePairwiseOnDemand]: 323/330 looper letters, 2176 selfloop transitions, 508 changer transitions 0/2684 dead transitions. [2023-01-28 12:09:10,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 837 places, 2684 transitions, 95302 flow [2023-01-28 12:09:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 12:09:10,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 12:09:10,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3154 transitions. [2023-01-28 12:09:10,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3982323232323232 [2023-01-28 12:09:10,479 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3154 transitions. [2023-01-28 12:09:10,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3154 transitions. [2023-01-28 12:09:10,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:09:10,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3154 transitions. [2023-01-28 12:09:10,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 131.41666666666666) internal successors, (3154), 24 states have internal predecessors, (3154), 0 states have call successors, (0), 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 12:09:10,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 330.0) internal successors, (8250), 25 states have internal predecessors, (8250), 0 states have call successors, (0), 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 12:09:10,484 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 330.0) internal successors, (8250), 25 states have internal predecessors, (8250), 0 states have call successors, (0), 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 12:09:10,484 INFO L175 Difference]: Start difference. First operand has 818 places, 2573 transitions, 86679 flow. Second operand 24 states and 3154 transitions. [2023-01-28 12:09:10,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 837 places, 2684 transitions, 95302 flow [2023-01-28 12:09:25,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 828 places, 2684 transitions, 94782 flow, removed 211 selfloop flow, removed 9 redundant places. [2023-01-28 12:09:25,827 INFO L231 Difference]: Finished difference. Result has 837 places, 2617 transitions, 90380 flow [2023-01-28 12:09:25,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=85739, PETRI_DIFFERENCE_MINUEND_PLACES=805, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=457, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2083, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=90380, PETRI_PLACES=837, PETRI_TRANSITIONS=2617} [2023-01-28 12:09:25,830 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 816 predicate places. [2023-01-28 12:09:25,830 INFO L495 AbstractCegarLoop]: Abstraction has has 837 places, 2617 transitions, 90380 flow [2023-01-28 12:09:25,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 128.05882352941177) internal successors, (2177), 17 states have internal predecessors, (2177), 0 states have call successors, (0), 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 12:09:25,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:09:25,831 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:09:25,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-01-28 12:09:26,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-01-28 12:09:26,040 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:09:26,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:09:26,040 INFO L85 PathProgramCache]: Analyzing trace with hash -60980314, now seen corresponding path program 36 times [2023-01-28 12:09:26,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:09:26,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585620495] [2023-01-28 12:09:26,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:09:26,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:09:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:09:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:09:26,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:09:26,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585620495] [2023-01-28 12:09:26,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585620495] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:09:26,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076778837] [2023-01-28 12:09:26,220 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 12:09:26,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:09:26,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:09:26,222 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:09:26,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-01-28 12:09:26,416 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-01-28 12:09:26,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:09:26,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:09:26,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:09:26,475 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:09:26,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:09:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:09:26,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076778837] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:09:26,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:09:26,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-01-28 12:09:26,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996018365] [2023-01-28 12:09:26,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:09:26,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 12:09:26,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:09:26,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 12:09:26,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-01-28 12:09:26,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:09:26,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 837 places, 2617 transitions, 90380 flow. Second operand has 19 states, 19 states have (on average 127.94736842105263) internal successors, (2431), 19 states have internal predecessors, (2431), 0 states have call successors, (0), 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 12:09:26,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:09:26,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:09:26,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:09:39,896 INFO L130 PetriNetUnfolder]: 6263/12704 cut-off events. [2023-01-28 12:09:39,896 INFO L131 PetriNetUnfolder]: For 882946/882946 co-relation queries the response was YES. [2023-01-28 12:09:40,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183759 conditions, 12704 events. 6263/12704 cut-off events. For 882946/882946 co-relation queries the response was YES. Maximal size of possible extension queue 925. Compared 116011 event pairs, 1667 based on Foata normal form. 20/12723 useless extension candidates. Maximal degree in co-relation 183235. Up to 8241 conditions per place. [2023-01-28 12:09:40,143 INFO L137 encePairwiseOnDemand]: 323/330 looper letters, 2083 selfloop transitions, 661 changer transitions 3/2747 dead transitions. [2023-01-28 12:09:40,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 865 places, 2747 transitions, 99700 flow [2023-01-28 12:09:40,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-28 12:09:40,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-01-28 12:09:40,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3820 transitions. [2023-01-28 12:09:40,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3991640543364681 [2023-01-28 12:09:40,146 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3820 transitions. [2023-01-28 12:09:40,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3820 transitions. [2023-01-28 12:09:40,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:09:40,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3820 transitions. [2023-01-28 12:09:40,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 131.72413793103448) internal successors, (3820), 29 states have internal predecessors, (3820), 0 states have call successors, (0), 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 12:09:40,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 330.0) internal successors, (9900), 30 states have internal predecessors, (9900), 0 states have call successors, (0), 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 12:09:40,152 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 330.0) internal successors, (9900), 30 states have internal predecessors, (9900), 0 states have call successors, (0), 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 12:09:40,153 INFO L175 Difference]: Start difference. First operand has 837 places, 2617 transitions, 90380 flow. Second operand 29 states and 3820 transitions. [2023-01-28 12:09:40,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 865 places, 2747 transitions, 99700 flow [2023-01-28 12:09:55,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 848 places, 2747 transitions, 98273 flow, removed 604 selfloop flow, removed 17 redundant places. [2023-01-28 12:09:55,701 INFO L231 Difference]: Finished difference. Result has 853 places, 2663 transitions, 93246 flow [2023-01-28 12:09:55,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=88843, PETRI_DIFFERENCE_MINUEND_PLACES=820, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=612, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1995, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=93246, PETRI_PLACES=853, PETRI_TRANSITIONS=2663} [2023-01-28 12:09:55,703 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 832 predicate places. [2023-01-28 12:09:55,703 INFO L495 AbstractCegarLoop]: Abstraction has has 853 places, 2663 transitions, 93246 flow [2023-01-28 12:09:55,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 127.94736842105263) internal successors, (2431), 19 states have internal predecessors, (2431), 0 states have call successors, (0), 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 12:09:55,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:09:55,704 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:09:55,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-01-28 12:09:55,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-01-28 12:09:55,910 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:09:55,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:09:55,910 INFO L85 PathProgramCache]: Analyzing trace with hash -919347608, now seen corresponding path program 37 times [2023-01-28 12:09:55,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:09:55,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475350182] [2023-01-28 12:09:55,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:09:55,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:09:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:09:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:09:56,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:09:56,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475350182] [2023-01-28 12:09:56,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475350182] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:09:56,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111493316] [2023-01-28 12:09:56,055 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 12:09:56,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:09:56,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:09:56,057 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:09:56,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-01-28 12:09:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:09:56,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:09:56,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:09:56,247 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:09:56,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:09:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:09:56,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111493316] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:09:56,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:09:56,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-01-28 12:09:56,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561749843] [2023-01-28 12:09:56,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:09:56,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 12:09:56,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:09:56,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 12:09:56,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-01-28 12:09:56,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:09:56,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 853 places, 2663 transitions, 93246 flow. Second operand has 18 states, 18 states have (on average 127.77777777777777) internal successors, (2300), 18 states have internal predecessors, (2300), 0 states have call successors, (0), 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 12:09:56,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:09:56,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:09:56,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:10:09,177 INFO L130 PetriNetUnfolder]: 6340/12893 cut-off events. [2023-01-28 12:10:09,177 INFO L131 PetriNetUnfolder]: For 919056/919056 co-relation queries the response was YES. [2023-01-28 12:10:09,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187706 conditions, 12893 events. 6340/12893 cut-off events. For 919056/919056 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 118065 event pairs, 2082 based on Foata normal form. 26/12918 useless extension candidates. Maximal degree in co-relation 187168. Up to 10290 conditions per place. [2023-01-28 12:10:09,386 INFO L137 encePairwiseOnDemand]: 325/330 looper letters, 2279 selfloop transitions, 475 changer transitions 4/2758 dead transitions. [2023-01-28 12:10:09,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 867 places, 2758 transitions, 101793 flow [2023-01-28 12:10:09,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 12:10:09,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 12:10:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2107 transitions. [2023-01-28 12:10:09,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3990530303030303 [2023-01-28 12:10:09,388 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2107 transitions. [2023-01-28 12:10:09,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2107 transitions. [2023-01-28 12:10:09,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:10:09,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2107 transitions. [2023-01-28 12:10:09,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 131.6875) internal successors, (2107), 16 states have internal predecessors, (2107), 0 states have call successors, (0), 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 12:10:09,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 330.0) internal successors, (5610), 17 states have internal predecessors, (5610), 0 states have call successors, (0), 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 12:10:09,392 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 330.0) internal successors, (5610), 17 states have internal predecessors, (5610), 0 states have call successors, (0), 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 12:10:09,392 INFO L175 Difference]: Start difference. First operand has 853 places, 2663 transitions, 93246 flow. Second operand 16 states and 2107 transitions. [2023-01-28 12:10:09,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 867 places, 2758 transitions, 101793 flow [2023-01-28 12:10:25,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 854 places, 2758 transitions, 100190 flow, removed 594 selfloop flow, removed 13 redundant places. [2023-01-28 12:10:25,752 INFO L231 Difference]: Finished difference. Result has 857 places, 2680 transitions, 94192 flow [2023-01-28 12:10:25,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=91527, PETRI_DIFFERENCE_MINUEND_PLACES=839, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=453, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=94192, PETRI_PLACES=857, PETRI_TRANSITIONS=2680} [2023-01-28 12:10:25,753 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 836 predicate places. [2023-01-28 12:10:25,753 INFO L495 AbstractCegarLoop]: Abstraction has has 857 places, 2680 transitions, 94192 flow [2023-01-28 12:10:25,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 127.77777777777777) internal successors, (2300), 18 states have internal predecessors, (2300), 0 states have call successors, (0), 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 12:10:25,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:10:25,754 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:10:25,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-01-28 12:10:25,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-01-28 12:10:25,954 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:10:25,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:10:25,955 INFO L85 PathProgramCache]: Analyzing trace with hash 562677158, now seen corresponding path program 38 times [2023-01-28 12:10:25,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:10:25,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693654172] [2023-01-28 12:10:25,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:10:25,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:10:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:10:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:10:26,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:10:26,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693654172] [2023-01-28 12:10:26,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693654172] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:10:26,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196056634] [2023-01-28 12:10:26,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:10:26,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:10:26,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:10:26,093 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:10:26,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-01-28 12:10:26,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:10:26,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:10:26,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:10:26,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:10:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:10:26,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:10:26,468 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:10:26,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196056634] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:10:26,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:10:26,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-01-28 12:10:26,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319446859] [2023-01-28 12:10:26,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:10:26,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 12:10:26,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:10:26,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 12:10:26,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-01-28 12:10:26,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:10:26,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 857 places, 2680 transitions, 94192 flow. Second operand has 19 states, 19 states have (on average 127.89473684210526) internal successors, (2430), 19 states have internal predecessors, (2430), 0 states have call successors, (0), 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 12:10:26,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:10:26,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:10:26,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:10:39,598 INFO L130 PetriNetUnfolder]: 6336/12883 cut-off events. [2023-01-28 12:10:39,598 INFO L131 PetriNetUnfolder]: For 912101/912101 co-relation queries the response was YES. [2023-01-28 12:10:39,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187074 conditions, 12883 events. 6336/12883 cut-off events. For 912101/912101 co-relation queries the response was YES. Maximal size of possible extension queue 934. Compared 117895 event pairs, 1745 based on Foata normal form. 4/12886 useless extension candidates. Maximal degree in co-relation 186542. Up to 7185 conditions per place. [2023-01-28 12:10:39,837 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 2271 selfloop transitions, 439 changer transitions 15/2725 dead transitions. [2023-01-28 12:10:39,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 872 places, 2725 transitions, 100555 flow [2023-01-28 12:10:39,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 12:10:39,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 12:10:39,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2084 transitions. [2023-01-28 12:10:39,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946969696969697 [2023-01-28 12:10:39,839 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2084 transitions. [2023-01-28 12:10:39,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2084 transitions. [2023-01-28 12:10:39,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:10:39,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2084 transitions. [2023-01-28 12:10:39,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 130.25) internal successors, (2084), 16 states have internal predecessors, (2084), 0 states have call successors, (0), 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 12:10:39,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 330.0) internal successors, (5610), 17 states have internal predecessors, (5610), 0 states have call successors, (0), 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 12:10:39,843 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 330.0) internal successors, (5610), 17 states have internal predecessors, (5610), 0 states have call successors, (0), 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 12:10:39,843 INFO L175 Difference]: Start difference. First operand has 857 places, 2680 transitions, 94192 flow. Second operand 16 states and 2084 transitions. [2023-01-28 12:10:39,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 872 places, 2725 transitions, 100555 flow [2023-01-28 12:10:56,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 862 places, 2725 transitions, 100233 flow, removed 96 selfloop flow, removed 10 redundant places. [2023-01-28 12:10:56,167 INFO L231 Difference]: Finished difference. Result has 863 places, 2673 transitions, 94566 flow [2023-01-28 12:10:56,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=93870, PETRI_DIFFERENCE_MINUEND_PLACES=847, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=438, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=94566, PETRI_PLACES=863, PETRI_TRANSITIONS=2673} [2023-01-28 12:10:56,170 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 842 predicate places. [2023-01-28 12:10:56,170 INFO L495 AbstractCegarLoop]: Abstraction has has 863 places, 2673 transitions, 94566 flow [2023-01-28 12:10:56,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 127.89473684210526) internal successors, (2430), 19 states have internal predecessors, (2430), 0 states have call successors, (0), 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 12:10:56,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:10:56,171 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:10:56,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-01-28 12:10:56,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:10:56,377 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:10:56,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:10:56,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1264307842, now seen corresponding path program 39 times [2023-01-28 12:10:56,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:10:56,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635218551] [2023-01-28 12:10:56,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:10:56,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:10:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:10:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:10:56,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:10:56,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635218551] [2023-01-28 12:10:56,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635218551] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:10:56,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555982393] [2023-01-28 12:10:56,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 12:10:56,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:10:56,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:10:56,526 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:10:56,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-01-28 12:10:56,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 12:10:56,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:10:56,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 12:10:56,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:10:56,850 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:10:56,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:10:56,998 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:10:56,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555982393] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:10:56,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:10:56,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2023-01-28 12:10:56,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132499902] [2023-01-28 12:10:56,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:10:56,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 12:10:56,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:10:56,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 12:10:56,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-01-28 12:10:57,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:10:57,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 863 places, 2673 transitions, 94566 flow. Second operand has 18 states, 18 states have (on average 127.94444444444444) internal successors, (2303), 18 states have internal predecessors, (2303), 0 states have call successors, (0), 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 12:10:57,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:10:57,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:10:57,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:11:09,360 INFO L130 PetriNetUnfolder]: 6336/12885 cut-off events. [2023-01-28 12:11:09,360 INFO L131 PetriNetUnfolder]: For 930311/930311 co-relation queries the response was YES. [2023-01-28 12:11:09,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188736 conditions, 12885 events. 6336/12885 cut-off events. For 930311/930311 co-relation queries the response was YES. Maximal size of possible extension queue 929. Compared 118015 event pairs, 1701 based on Foata normal form. 2/12886 useless extension candidates. Maximal degree in co-relation 188326. Up to 7185 conditions per place. [2023-01-28 12:11:09,580 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 2256 selfloop transitions, 473 changer transitions 2/2731 dead transitions. [2023-01-28 12:11:09,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 874 places, 2731 transitions, 101077 flow [2023-01-28 12:11:09,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 12:11:09,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 12:11:09,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2483 transitions. [2023-01-28 12:11:09,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3960127591706539 [2023-01-28 12:11:09,582 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2483 transitions. [2023-01-28 12:11:09,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2483 transitions. [2023-01-28 12:11:09,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:11:09,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2483 transitions. [2023-01-28 12:11:09,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 130.68421052631578) internal successors, (2483), 19 states have internal predecessors, (2483), 0 states have call successors, (0), 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 12:11:09,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 330.0) internal successors, (6600), 20 states have internal predecessors, (6600), 0 states have call successors, (0), 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 12:11:09,588 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 330.0) internal successors, (6600), 20 states have internal predecessors, (6600), 0 states have call successors, (0), 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 12:11:09,588 INFO L175 Difference]: Start difference. First operand has 863 places, 2673 transitions, 94566 flow. Second operand 19 states and 2483 transitions. [2023-01-28 12:11:09,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 874 places, 2731 transitions, 101077 flow [2023-01-28 12:11:26,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 868 places, 2731 transitions, 100882 flow, removed 38 selfloop flow, removed 6 redundant places. [2023-01-28 12:11:26,164 INFO L231 Difference]: Finished difference. Result has 868 places, 2670 transitions, 95237 flow [2023-01-28 12:11:26,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=94316, PETRI_DIFFERENCE_MINUEND_PLACES=850, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=473, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=95237, PETRI_PLACES=868, PETRI_TRANSITIONS=2670} [2023-01-28 12:11:26,166 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 847 predicate places. [2023-01-28 12:11:26,166 INFO L495 AbstractCegarLoop]: Abstraction has has 868 places, 2670 transitions, 95237 flow [2023-01-28 12:11:26,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 127.94444444444444) internal successors, (2303), 18 states have internal predecessors, (2303), 0 states have call successors, (0), 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 12:11:26,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:11:26,166 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:11:26,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-01-28 12:11:26,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:11:26,372 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:11:26,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:11:26,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1513711192, now seen corresponding path program 40 times [2023-01-28 12:11:26,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:11:26,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326116550] [2023-01-28 12:11:26,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:11:26,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:11:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:11:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:11:26,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:11:26,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326116550] [2023-01-28 12:11:26,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326116550] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:11:26,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687237795] [2023-01-28 12:11:26,489 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 12:11:26,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:11:26,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:11:26,490 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:11:26,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-01-28 12:11:26,605 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 12:11:26,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:11:26,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 12:11:26,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:11:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:11:26,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:11:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:11:26,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687237795] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:11:26,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:11:26,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2023-01-28 12:11:26,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119304513] [2023-01-28 12:11:26,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:11:26,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 12:11:26,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:11:26,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 12:11:26,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-01-28 12:11:26,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 330 [2023-01-28 12:11:26,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 868 places, 2670 transitions, 95237 flow. Second operand has 17 states, 17 states have (on average 127.94117647058823) internal successors, (2175), 17 states have internal predecessors, (2175), 0 states have call successors, (0), 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 12:11:26,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:11:26,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 330 [2023-01-28 12:11:26,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:11:39,076 INFO L130 PetriNetUnfolder]: 6330/12867 cut-off events. [2023-01-28 12:11:39,076 INFO L131 PetriNetUnfolder]: For 972286/972286 co-relation queries the response was YES. [2023-01-28 12:11:39,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190236 conditions, 12867 events. 6330/12867 cut-off events. For 972286/972286 co-relation queries the response was YES. Maximal size of possible extension queue 928. Compared 117816 event pairs, 1749 based on Foata normal form. 2/12868 useless extension candidates. Maximal degree in co-relation 189710. Up to 7185 conditions per place. [2023-01-28 12:11:39,304 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 2279 selfloop transitions, 425 changer transitions 9/2713 dead transitions. [2023-01-28 12:11:39,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 877 places, 2713 transitions, 101357 flow [2023-01-28 12:11:39,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 12:11:39,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 12:11:39,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1829 transitions. [2023-01-28 12:11:39,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958874458874459 [2023-01-28 12:11:39,305 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1829 transitions. [2023-01-28 12:11:39,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1829 transitions. [2023-01-28 12:11:39,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:11:39,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1829 transitions. [2023-01-28 12:11:39,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 130.64285714285714) internal successors, (1829), 14 states have internal predecessors, (1829), 0 states have call successors, (0), 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 12:11:39,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 330.0) internal successors, (4950), 15 states have internal predecessors, (4950), 0 states have call successors, (0), 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 12:11:39,309 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 330.0) internal successors, (4950), 15 states have internal predecessors, (4950), 0 states have call successors, (0), 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 12:11:39,309 INFO L175 Difference]: Start difference. First operand has 868 places, 2670 transitions, 95237 flow. Second operand 14 states and 1829 transitions. [2023-01-28 12:11:39,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 877 places, 2713 transitions, 101357 flow [2023-01-28 12:11:55,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 863 places, 2713 transitions, 100607 flow, removed 33 selfloop flow, removed 14 redundant places. [2023-01-28 12:11:55,207 INFO L231 Difference]: Finished difference. Result has 863 places, 2660 transitions, 94984 flow [2023-01-28 12:11:55,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=94368, PETRI_DIFFERENCE_MINUEND_PLACES=850, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=425, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=94984, PETRI_PLACES=863, PETRI_TRANSITIONS=2660} [2023-01-28 12:11:55,209 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 842 predicate places. [2023-01-28 12:11:55,210 INFO L495 AbstractCegarLoop]: Abstraction has has 863 places, 2660 transitions, 94984 flow [2023-01-28 12:11:55,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 127.94117647058823) internal successors, (2175), 17 states have internal predecessors, (2175), 0 states have call successors, (0), 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 12:11:55,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:11:55,210 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:11:55,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-01-28 12:11:55,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-01-28 12:11:55,416 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:11:55,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:11:55,416 INFO L85 PathProgramCache]: Analyzing trace with hash 267318248, now seen corresponding path program 41 times [2023-01-28 12:11:55,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:11:55,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349221320] [2023-01-28 12:11:55,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:11:55,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:11:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:11:56,631 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:11:56,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:11:56,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349221320] [2023-01-28 12:11:56,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349221320] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:11:56,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538168782] [2023-01-28 12:11:56,631 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 12:11:56,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:11:56,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:11:56,632 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:11:56,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-01-28 12:11:56,800 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 12:11:56,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:11:56,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 36 conjunts are in the unsatisfiable core [2023-01-28 12:11:56,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:11:56,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 12:11:56,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 12:11:57,030 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 12:11:57,047 INFO L321 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2023-01-28 12:11:57,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 33 [2023-01-28 12:11:57,056 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:11:57,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:11:59,187 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:11:59,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 114 [2023-01-28 12:11:59,202 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:11:59,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 48 [2023-01-28 12:11:59,345 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 12:11:59,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538168782] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:11:59,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:11:59,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 6] total 23 [2023-01-28 12:11:59,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977162468] [2023-01-28 12:11:59,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:11:59,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 12:11:59,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:11:59,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 12:11:59,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=517, Unknown=1, NotChecked=0, Total=600 [2023-01-28 12:11:59,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 330 [2023-01-28 12:11:59,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 863 places, 2660 transitions, 94984 flow. Second operand has 25 states, 25 states have (on average 98.76) internal successors, (2469), 25 states have internal predecessors, (2469), 0 states have call successors, (0), 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 12:11:59,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:11:59,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 330 [2023-01-28 12:11:59,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:12:12,045 INFO L130 PetriNetUnfolder]: 6341/12877 cut-off events. [2023-01-28 12:12:12,046 INFO L131 PetriNetUnfolder]: For 972624/972660 co-relation queries the response was YES. [2023-01-28 12:12:12,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191155 conditions, 12877 events. 6341/12877 cut-off events. For 972624/972660 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 117809 event pairs, 332 based on Foata normal form. 14/12863 useless extension candidates. Maximal degree in co-relation 190581. Up to 12028 conditions per place. [2023-01-28 12:12:12,294 INFO L137 encePairwiseOnDemand]: 324/330 looper letters, 2494 selfloop transitions, 211 changer transitions 25/2749 dead transitions. [2023-01-28 12:12:12,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 875 places, 2749 transitions, 102549 flow [2023-01-28 12:12:12,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 12:12:12,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 12:12:12,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1936 transitions. [2023-01-28 12:12:12,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3087719298245614 [2023-01-28 12:12:12,296 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1936 transitions. [2023-01-28 12:12:12,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1936 transitions. [2023-01-28 12:12:12,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:12:12,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1936 transitions. [2023-01-28 12:12:12,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 101.89473684210526) internal successors, (1936), 19 states have internal predecessors, (1936), 0 states have call successors, (0), 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 12:12:12,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 330.0) internal successors, (6600), 20 states have internal predecessors, (6600), 0 states have call successors, (0), 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 12:12:12,302 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 330.0) internal successors, (6600), 20 states have internal predecessors, (6600), 0 states have call successors, (0), 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 12:12:12,302 INFO L175 Difference]: Start difference. First operand has 863 places, 2660 transitions, 94984 flow. Second operand 19 states and 1936 transitions. [2023-01-28 12:12:12,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 875 places, 2749 transitions, 102549 flow [2023-01-28 12:12:28,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 856 places, 2749 transitions, 101288 flow, removed 17 selfloop flow, removed 19 redundant places. [2023-01-28 12:12:28,328 INFO L231 Difference]: Finished difference. Result has 861 places, 2685 transitions, 95258 flow [2023-01-28 12:12:28,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=93772, PETRI_DIFFERENCE_MINUEND_PLACES=838, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=95258, PETRI_PLACES=861, PETRI_TRANSITIONS=2685} [2023-01-28 12:12:28,330 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 840 predicate places. [2023-01-28 12:12:28,330 INFO L495 AbstractCegarLoop]: Abstraction has has 861 places, 2685 transitions, 95258 flow [2023-01-28 12:12:28,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 98.76) internal successors, (2469), 25 states have internal predecessors, (2469), 0 states have call successors, (0), 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 12:12:28,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:12:28,330 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:12:28,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-01-28 12:12:28,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-01-28 12:12:28,533 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:12:28,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:12:28,533 INFO L85 PathProgramCache]: Analyzing trace with hash -982692439, now seen corresponding path program 42 times [2023-01-28 12:12:28,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:12:28,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636050700] [2023-01-28 12:12:28,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:12:28,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:12:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:12:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:12:30,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:12:30,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636050700] [2023-01-28 12:12:30,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636050700] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:12:30,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123010548] [2023-01-28 12:12:30,119 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 12:12:30,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:12:30,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:12:30,120 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:12:30,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-01-28 12:12:30,319 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 12:12:30,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:12:30,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 31 conjunts are in the unsatisfiable core [2023-01-28 12:12:30,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:12:30,564 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:12:30,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 70 [2023-01-28 12:12:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:12:30,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:12:31,053 INFO L321 Elim1Store]: treesize reduction 20, result has 92.7 percent of original size [2023-01-28 12:12:31,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 67 treesize of output 304 [2023-01-28 12:12:31,987 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:12:31,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123010548] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:12:31,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:12:31,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 6] total 24 [2023-01-28 12:12:31,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339102102] [2023-01-28 12:12:31,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:12:31,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-28 12:12:31,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:12:31,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-28 12:12:31,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2023-01-28 12:12:31,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 330 [2023-01-28 12:12:31,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 861 places, 2685 transitions, 95258 flow. Second operand has 26 states, 26 states have (on average 98.8076923076923) internal successors, (2569), 26 states have internal predecessors, (2569), 0 states have call successors, (0), 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 12:12:31,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:12:31,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 330 [2023-01-28 12:12:31,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:12:53,271 INFO L130 PetriNetUnfolder]: 10262/20819 cut-off events. [2023-01-28 12:12:53,272 INFO L131 PetriNetUnfolder]: For 1782525/1782561 co-relation queries the response was YES. [2023-01-28 12:12:53,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322187 conditions, 20819 events. 10262/20819 cut-off events. For 1782525/1782561 co-relation queries the response was YES. Maximal size of possible extension queue 1437. Compared 203835 event pairs, 786 based on Foata normal form. 35/20818 useless extension candidates. Maximal degree in co-relation 321264. Up to 12774 conditions per place. [2023-01-28 12:12:53,767 INFO L137 encePairwiseOnDemand]: 323/330 looper letters, 3154 selfloop transitions, 912 changer transitions 99/4184 dead transitions. [2023-01-28 12:12:53,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 878 places, 4184 transitions, 163503 flow [2023-01-28 12:12:53,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-28 12:12:53,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-01-28 12:12:53,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3004 transitions. [2023-01-28 12:12:53,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31389759665621736 [2023-01-28 12:12:53,770 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3004 transitions. [2023-01-28 12:12:53,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3004 transitions. [2023-01-28 12:12:53,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:12:53,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3004 transitions. [2023-01-28 12:12:53,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 103.58620689655173) internal successors, (3004), 29 states have internal predecessors, (3004), 0 states have call successors, (0), 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 12:12:53,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 330.0) internal successors, (9900), 30 states have internal predecessors, (9900), 0 states have call successors, (0), 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 12:12:53,776 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 330.0) internal successors, (9900), 30 states have internal predecessors, (9900), 0 states have call successors, (0), 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 12:12:53,776 INFO L175 Difference]: Start difference. First operand has 861 places, 2685 transitions, 95258 flow. Second operand 29 states and 3004 transitions. [2023-01-28 12:12:53,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 878 places, 4184 transitions, 163503 flow [2023-01-28 12:13:28,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 865 places, 4184 transitions, 161536 flow, removed 129 selfloop flow, removed 13 redundant places. [2023-01-28 12:13:28,964 INFO L231 Difference]: Finished difference. Result has 880 places, 3520 transitions, 131553 flow [2023-01-28 12:13:28,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=94277, PETRI_DIFFERENCE_MINUEND_PLACES=837, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=131553, PETRI_PLACES=880, PETRI_TRANSITIONS=3520} [2023-01-28 12:13:28,967 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 859 predicate places. [2023-01-28 12:13:28,967 INFO L495 AbstractCegarLoop]: Abstraction has has 880 places, 3520 transitions, 131553 flow [2023-01-28 12:13:28,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 98.8076923076923) internal successors, (2569), 26 states have internal predecessors, (2569), 0 states have call successors, (0), 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 12:13:28,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:13:28,967 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:13:28,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-01-28 12:13:29,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-01-28 12:13:29,168 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:13:29,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:13:29,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1474795203, now seen corresponding path program 43 times [2023-01-28 12:13:29,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:13:29,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144413246] [2023-01-28 12:13:29,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:13:29,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:13:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:13:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:13:30,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:13:30,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144413246] [2023-01-28 12:13:30,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144413246] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:13:30,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282581065] [2023-01-28 12:13:30,686 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 12:13:30,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:13:30,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:13:30,687 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:13:30,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-01-28 12:13:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:13:30,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 31 conjunts are in the unsatisfiable core [2023-01-28 12:13:30,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:13:31,095 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:13:31,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 70 [2023-01-28 12:13:31,124 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:13:31,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:13:31,577 INFO L321 Elim1Store]: treesize reduction 20, result has 92.7 percent of original size [2023-01-28 12:13:31,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 67 treesize of output 304 [2023-01-28 12:13:32,489 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:13:32,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282581065] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:13:32,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:13:32,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 6] total 23 [2023-01-28 12:13:32,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583954433] [2023-01-28 12:13:32,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:13:32,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 12:13:32,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:13:32,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 12:13:32,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2023-01-28 12:13:32,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 330 [2023-01-28 12:13:32,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 880 places, 3520 transitions, 131553 flow. Second operand has 25 states, 25 states have (on average 105.96) internal successors, (2649), 25 states have internal predecessors, (2649), 0 states have call successors, (0), 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 12:13:32,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:13:32,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 330 [2023-01-28 12:13:32,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:14:07,846 INFO L130 PetriNetUnfolder]: 12273/25320 cut-off events. [2023-01-28 12:14:07,846 INFO L131 PetriNetUnfolder]: For 2366251/2366287 co-relation queries the response was YES. [2023-01-28 12:14:08,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406064 conditions, 25320 events. 12273/25320 cut-off events. For 2366251/2366287 co-relation queries the response was YES. Maximal size of possible extension queue 1607. Compared 258576 event pairs, 1099 based on Foata normal form. 39/25338 useless extension candidates. Maximal degree in co-relation 405129. Up to 17887 conditions per place. [2023-01-28 12:14:08,565 INFO L137 encePairwiseOnDemand]: 323/330 looper letters, 3383 selfloop transitions, 1109 changer transitions 56/4567 dead transitions. [2023-01-28 12:14:08,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 4567 transitions, 184749 flow [2023-01-28 12:14:08,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 12:14:08,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 12:14:08,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2865 transitions. [2023-01-28 12:14:08,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3339160839160839 [2023-01-28 12:14:08,568 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2865 transitions. [2023-01-28 12:14:08,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2865 transitions. [2023-01-28 12:14:08,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:14:08,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2865 transitions. [2023-01-28 12:14:08,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 110.1923076923077) internal successors, (2865), 26 states have internal predecessors, (2865), 0 states have call successors, (0), 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 12:14:08,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 330.0) internal successors, (8910), 27 states have internal predecessors, (8910), 0 states have call successors, (0), 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 12:14:08,574 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 330.0) internal successors, (8910), 27 states have internal predecessors, (8910), 0 states have call successors, (0), 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 12:14:08,574 INFO L175 Difference]: Start difference. First operand has 880 places, 3520 transitions, 131553 flow. Second operand 26 states and 2865 transitions. [2023-01-28 12:14:08,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 4567 transitions, 184749 flow Received shutdown request... [2023-01-28 12:14:53,572 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 12:14:53,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-01-28 12:14:53,577 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 12:14:53,577 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 12:14:53,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:14:53,773 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-28 12:14:53,774 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 12:14:53,775 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 12:14:53,775 INFO L445 BasicCegarLoop]: Path program histogram: [43, 3, 2, 1, 1] [2023-01-28 12:14:53,780 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 12:14:53,780 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 12:14:53,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:14:53 BasicIcfg [2023-01-28 12:14:53,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 12:14:53,785 INFO L158 Benchmark]: Toolchain (without parser) took 795202.28ms. Allocated memory was 364.9MB in the beginning and 8.1GB in the end (delta: 7.7GB). Free memory was 315.6MB in the beginning and 5.2GB in the end (delta: -4.9GB). Peak memory consumption was 5.4GB. Max. memory is 16.0GB. [2023-01-28 12:14:53,785 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 364.9MB. Free memory is still 313.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 12:14:53,785 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.71ms. Allocated memory is still 364.9MB. Free memory was 315.6MB in the beginning and 304.3MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 12:14:53,785 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.31ms. Allocated memory is still 364.9MB. Free memory was 304.3MB in the beginning and 302.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 12:14:53,785 INFO L158 Benchmark]: Boogie Preprocessor took 24.40ms. Allocated memory is still 364.9MB. Free memory was 302.4MB in the beginning and 300.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 12:14:53,786 INFO L158 Benchmark]: RCFGBuilder took 514.87ms. Allocated memory is still 364.9MB. Free memory was 300.8MB in the beginning and 284.5MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-01-28 12:14:53,786 INFO L158 Benchmark]: TraceAbstraction took 794440.20ms. Allocated memory was 364.9MB in the beginning and 8.1GB in the end (delta: 7.7GB). Free memory was 283.8MB in the beginning and 5.2GB in the end (delta: -4.9GB). Peak memory consumption was 5.4GB. Max. memory is 16.0GB. [2023-01-28 12:14:53,788 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 364.9MB. Free memory is still 313.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 188.71ms. Allocated memory is still 364.9MB. Free memory was 315.6MB in the beginning and 304.3MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 29.31ms. Allocated memory is still 364.9MB. Free memory was 304.3MB in the beginning and 302.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 24.40ms. Allocated memory is still 364.9MB. Free memory was 302.4MB in the beginning and 300.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 514.87ms. Allocated memory is still 364.9MB. Free memory was 300.8MB in the beginning and 284.5MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 794440.20ms. Allocated memory was 364.9MB in the beginning and 8.1GB in the end (delta: 7.7GB). Free memory was 283.8MB in the beginning and 5.2GB in the end (delta: -4.9GB). Peak memory consumption was 5.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 140 PlacesBefore, 21 PlacesAfterwards, 147 TransitionsBefore, 17 TransitionsAfterwards, 1942 CoEnabledTransitionPairs, 7 FixpointIterations, 73 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 22 TrivialYvCompositions, 21 ConcurrentYvCompositions, 11 ChoiceCompositions, 173 TotalNumberOfCompositions, 1977 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1916, independent: 1906, independent conditional: 0, independent unconditional: 1906, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1166, independent: 1161, independent conditional: 0, independent unconditional: 1161, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1916, independent: 745, independent conditional: 0, independent unconditional: 745, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 1166, unknown conditional: 0, unknown unconditional: 1166] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 192 locations, 3 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: 794.3s, OverallIterations: 50, TraceHistogramMax: 4, PathProgramHistogramMax: 43, EmptinessCheckTime: 0.0s, AutomataDifference: 740.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 32 mSolverCounterUnknown, 5464 SdHoareTripleChecker+Valid, 39.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5464 mSDsluCounter, 657 SdHoareTripleChecker+Invalid, 35.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 59 IncrementalHoareTripleChecker+Unchecked, 472 mSDsCounter, 1023 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26374 IncrementalHoareTripleChecker+Invalid, 27488 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1023 mSolverCounterUnsat, 185 mSDtfsCounter, 26374 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3421 GetRequests, 1901 SyntacticMatches, 47 SemanticMatches, 1473 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 12942 ImplicationChecksByTransitivity, 37.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131553occurred in iteration=49, InterpolantAutomatonStates: 1090, 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: 0.6s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 32.2s InterpolantComputationTime, 1911 NumberOfCodeBlocks, 1900 NumberOfCodeBlocksAsserted, 149 NumberOfCheckSat, 2679 ConstructedInterpolants, 14 QuantifiedInterpolants, 20329 SizeOfPredicates, 178 NumberOfNonLiveVariables, 9584 ConjunctsInSsa, 705 ConjunctsInUnsatCore, 141 InterpolantComputations, 6 PerfectInterpolantSequences, 627/1482 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