/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/clever.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 20:36:55,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 20:36:55,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 20:36:55,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 20:36:55,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 20:36:55,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 20:36:55,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 20:36:55,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 20:36:55,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 20:36:55,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 20:36:55,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 20:36:55,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 20:36:55,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 20:36:55,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 20:36:55,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 20:36:55,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 20:36:55,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 20:36:55,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 20:36:55,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 20:36:55,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 20:36:55,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 20:36:55,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 20:36:55,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 20:36:55,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 20:36:55,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 20:36:55,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 20:36:55,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 20:36:55,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 20:36:55,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 20:36:55,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 20:36:55,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 20:36:55,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 20:36:55,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 20:36:55,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 20:36:55,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 20:36:55,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 20:36:55,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 20:36:55,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 20:36:55,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 20:36:55,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 20:36:55,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 20:36:55,920 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 [2023-01-27 20:36:55,932 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 20:36:55,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 20:36:55,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 20:36:55,933 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 20:36:55,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 20:36:55,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 20:36:55,934 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 20:36:55,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 20:36:55,934 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 20:36:55,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 20:36:55,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 20:36:55,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 20:36:55,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 20:36:55,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 20:36:55,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 20:36:55,935 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 20:36:55,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 20:36:55,935 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 20:36:55,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 20:36:55,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 20:36:55,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 20:36:55,935 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 20:36:55,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 20:36:55,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:36:55,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 20:36:55,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 20:36:55,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 20:36:55,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 20:36:55,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 20:36:55,936 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 20:36:55,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 20:36:55,936 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 20:36:56,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 20:36:56,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 20:36:56,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 20:36:56,138 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 20:36:56,152 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 20:36:56,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/clever.wvr.c [2023-01-27 20:36:57,128 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 20:36:57,314 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 20:36:57,314 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/clever.wvr.c [2023-01-27 20:36:57,318 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79475c8eb/8a4e745509fb4bddaf17f7f4ed181a66/FLAGb1c10c5bd [2023-01-27 20:36:57,744 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79475c8eb/8a4e745509fb4bddaf17f7f4ed181a66 [2023-01-27 20:36:57,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 20:36:57,748 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 20:36:57,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 20:36:57,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 20:36:57,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 20:36:57,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:36:57" (1/1) ... [2023-01-27 20:36:57,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff0ede8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:36:57, skipping insertion in model container [2023-01-27 20:36:57,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:36:57" (1/1) ... [2023-01-27 20:36:57,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 20:36:57,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 20:36:57,897 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/clever.wvr.c[2133,2146] [2023-01-27 20:36:57,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:36:57,906 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 20:36:57,924 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/clever.wvr.c[2133,2146] [2023-01-27 20:36:57,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:36:57,934 INFO L208 MainTranslator]: Completed translation [2023-01-27 20:36:57,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:36:57 WrapperNode [2023-01-27 20:36:57,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 20:36:57,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 20:36:57,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 20:36:57,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 20:36:57,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:36:57" (1/1) ... [2023-01-27 20:36:57,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:36:57" (1/1) ... [2023-01-27 20:36:57,958 INFO L138 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 85 [2023-01-27 20:36:57,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 20:36:57,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 20:36:57,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 20:36:57,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 20:36:57,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:36:57" (1/1) ... [2023-01-27 20:36:57,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:36:57" (1/1) ... [2023-01-27 20:36:57,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:36:57" (1/1) ... [2023-01-27 20:36:57,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:36:57" (1/1) ... [2023-01-27 20:36:57,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:36:57" (1/1) ... [2023-01-27 20:36:57,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:36:57" (1/1) ... [2023-01-27 20:36:57,974 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:36:57" (1/1) ... [2023-01-27 20:36:57,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:36:57" (1/1) ... [2023-01-27 20:36:57,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 20:36:57,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 20:36:57,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 20:36:57,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 20:36:57,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:36:57" (1/1) ... [2023-01-27 20:36:57,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:36:57,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:36:58,003 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) [2023-01-27 20:36:58,006 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 [2023-01-27 20:36:58,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 20:36:58,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 20:36:58,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 20:36:58,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 20:36:58,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 20:36:58,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 20:36:58,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 20:36:58,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 20:36:58,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 20:36:58,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 20:36:58,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 20:36:58,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 20:36:58,030 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 20:36:58,131 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 20:36:58,132 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 20:36:58,273 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 20:36:58,289 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 20:36:58,289 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-27 20:36:58,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:36:58 BoogieIcfgContainer [2023-01-27 20:36:58,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 20:36:58,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 20:36:58,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 20:36:58,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 20:36:58,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 08:36:57" (1/3) ... [2023-01-27 20:36:58,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a009d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:36:58, skipping insertion in model container [2023-01-27 20:36:58,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:36:57" (2/3) ... [2023-01-27 20:36:58,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a009d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:36:58, skipping insertion in model container [2023-01-27 20:36:58,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:36:58" (3/3) ... [2023-01-27 20:36:58,296 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2023-01-27 20:36:58,319 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 20:36:58,319 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 20:36:58,320 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 20:36:58,380 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 20:36:58,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 119 transitions, 254 flow [2023-01-27 20:36:58,459 INFO L130 PetriNetUnfolder]: 9/117 cut-off events. [2023-01-27 20:36:58,459 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 20:36:58,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 117 events. 9/117 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-01-27 20:36:58,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 119 transitions, 254 flow [2023-01-27 20:36:58,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 109 transitions, 230 flow [2023-01-27 20:36:58,472 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 20:36:58,478 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 109 transitions, 230 flow [2023-01-27 20:36:58,479 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 109 transitions, 230 flow [2023-01-27 20:36:58,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 109 transitions, 230 flow [2023-01-27 20:36:58,499 INFO L130 PetriNetUnfolder]: 9/109 cut-off events. [2023-01-27 20:36:58,499 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 20:36:58,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 109 events. 9/109 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-01-27 20:36:58,500 INFO L119 LiptonReduction]: Number of co-enabled transitions 756 [2023-01-27 20:37:01,097 INFO L134 LiptonReduction]: Checked pairs total: 744 [2023-01-27 20:37:01,097 INFO L136 LiptonReduction]: Total number of compositions: 105 [2023-01-27 20:37:01,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 20:37:01,111 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;@24af9cc6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 20:37:01,111 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 20:37:01,114 INFO L130 PetriNetUnfolder]: 3/14 cut-off events. [2023-01-27 20:37:01,114 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 20:37:01,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:37:01,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:37:01,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:37:01,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:37:01,119 INFO L85 PathProgramCache]: Analyzing trace with hash -259219510, now seen corresponding path program 1 times [2023-01-27 20:37:01,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:37:01,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61828634] [2023-01-27 20:37:01,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:37:01,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:37:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:01,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:37:01,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61828634] [2023-01-27 20:37:01,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61828634] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:37:01,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:37:01,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 20:37:01,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596992231] [2023-01-27 20:37:01,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:37:01,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:37:01,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:37:01,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:37:01,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:37:01,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 224 [2023-01-27 20:37:01,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:01,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:37:01,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 224 [2023-01-27 20:37:01,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:37:01,546 INFO L130 PetriNetUnfolder]: 69/117 cut-off events. [2023-01-27 20:37:01,546 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-01-27 20:37:01,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 117 events. 69/117 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 280 event pairs, 15 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 204. Up to 73 conditions per place. [2023-01-27 20:37:01,548 INFO L137 encePairwiseOnDemand]: 220/224 looper letters, 23 selfloop transitions, 3 changer transitions 1/27 dead transitions. [2023-01-27 20:37:01,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 27 transitions, 129 flow [2023-01-27 20:37:01,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:37:01,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:37:01,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2023-01-27 20:37:01,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4836309523809524 [2023-01-27 20:37:01,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2023-01-27 20:37:01,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2023-01-27 20:37:01,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:37:01,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2023-01-27 20:37:01,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:01,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:01,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:01,567 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 42 flow. Second operand 3 states and 325 transitions. [2023-01-27 20:37:01,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 27 transitions, 129 flow [2023-01-27 20:37:01,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 27 transitions, 115 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 20:37:01,570 INFO L231 Difference]: Finished difference. Result has 18 places, 17 transitions, 53 flow [2023-01-27 20:37:01,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=18, PETRI_TRANSITIONS=17} [2023-01-27 20:37:01,573 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2023-01-27 20:37:01,573 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 17 transitions, 53 flow [2023-01-27 20:37:01,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:01,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:37:01,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:37:01,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 20:37:01,574 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:37:01,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:37:01,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1272176076, now seen corresponding path program 1 times [2023-01-27 20:37:01,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:37:01,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436370191] [2023-01-27 20:37:01,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:37:01,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:37:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:01,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:37:01,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436370191] [2023-01-27 20:37:01,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436370191] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:37:01,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:37:01,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:37:01,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101830871] [2023-01-27 20:37:01,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:37:01,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:37:01,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:37:01,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:37:01,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:37:01,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 224 [2023-01-27 20:37:01,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 17 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:01,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:37:01,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 224 [2023-01-27 20:37:01,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:37:01,699 INFO L130 PetriNetUnfolder]: 121/217 cut-off events. [2023-01-27 20:37:01,699 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-01-27 20:37:01,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 217 events. 121/217 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 688 event pairs, 18 based on Foata normal form. 4/201 useless extension candidates. Maximal degree in co-relation 201. Up to 130 conditions per place. [2023-01-27 20:37:01,701 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 35 selfloop transitions, 6 changer transitions 8/49 dead transitions. [2023-01-27 20:37:01,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 49 transitions, 243 flow [2023-01-27 20:37:01,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:37:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:37:01,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 510 transitions. [2023-01-27 20:37:01,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2023-01-27 20:37:01,703 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 510 transitions. [2023-01-27 20:37:01,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 510 transitions. [2023-01-27 20:37:01,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:37:01,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 510 transitions. [2023-01-27 20:37:01,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:01,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:01,707 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:01,707 INFO L175 Difference]: Start difference. First operand has 18 places, 17 transitions, 53 flow. Second operand 5 states and 510 transitions. [2023-01-27 20:37:01,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 49 transitions, 243 flow [2023-01-27 20:37:01,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 49 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:37:01,708 INFO L231 Difference]: Finished difference. Result has 23 places, 22 transitions, 99 flow [2023-01-27 20:37:01,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=50, 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=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=99, PETRI_PLACES=23, PETRI_TRANSITIONS=22} [2023-01-27 20:37:01,709 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2023-01-27 20:37:01,709 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 22 transitions, 99 flow [2023-01-27 20:37:01,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:01,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:37:01,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:37:01,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 20:37:01,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:37:01,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:37:01,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1400720826, now seen corresponding path program 2 times [2023-01-27 20:37:01,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:37:01,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749346018] [2023-01-27 20:37:01,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:37:01,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:37:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:01,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:01,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:37:01,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749346018] [2023-01-27 20:37:01,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749346018] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:37:01,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:37:01,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:37:01,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403990129] [2023-01-27 20:37:01,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:37:01,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:37:01,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:37:01,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:37:01,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:37:01,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 224 [2023-01-27 20:37:01,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 22 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:01,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:37:01,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 224 [2023-01-27 20:37:01,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:37:01,808 INFO L130 PetriNetUnfolder]: 110/185 cut-off events. [2023-01-27 20:37:01,808 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2023-01-27 20:37:01,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 185 events. 110/185 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 513 event pairs, 14 based on Foata normal form. 8/193 useless extension candidates. Maximal degree in co-relation 190. Up to 128 conditions per place. [2023-01-27 20:37:01,810 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 29 selfloop transitions, 7 changer transitions 5/41 dead transitions. [2023-01-27 20:37:01,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 41 transitions, 247 flow [2023-01-27 20:37:01,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:37:01,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:37:01,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 504 transitions. [2023-01-27 20:37:01,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-01-27 20:37:01,811 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 504 transitions. [2023-01-27 20:37:01,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 504 transitions. [2023-01-27 20:37:01,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:37:01,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 504 transitions. [2023-01-27 20:37:01,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:01,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:01,815 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:01,815 INFO L175 Difference]: Start difference. First operand has 23 places, 22 transitions, 99 flow. Second operand 5 states and 504 transitions. [2023-01-27 20:37:01,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 41 transitions, 247 flow [2023-01-27 20:37:01,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 41 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:37:01,816 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 127 flow [2023-01-27 20:37:01,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2023-01-27 20:37:01,817 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 8 predicate places. [2023-01-27 20:37:01,817 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 127 flow [2023-01-27 20:37:01,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:01,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:37:01,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:37:01,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 20:37:01,817 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:37:01,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:37:01,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1139161799, now seen corresponding path program 1 times [2023-01-27 20:37:01,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:37:01,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264487284] [2023-01-27 20:37:01,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:37:01,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:37:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:37:01,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:37:01,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264487284] [2023-01-27 20:37:01,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264487284] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:37:01,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089109143] [2023-01-27 20:37:01,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:37:01,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:01,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:37:01,889 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) [2023-01-27 20:37:01,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 20:37:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:01,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-27 20:37:01,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:37:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:37:02,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:37:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:37:02,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089109143] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:37:02,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:37:02,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2023-01-27 20:37:02,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703863289] [2023-01-27 20:37:02,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:37:02,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:37:02,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:37:02,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:37:02,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:37:02,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 224 [2023-01-27 20:37:02,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 96.85714285714286) internal successors, (678), 7 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:02,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:37:02,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 224 [2023-01-27 20:37:02,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:37:02,120 INFO L130 PetriNetUnfolder]: 108/175 cut-off events. [2023-01-27 20:37:02,120 INFO L131 PetriNetUnfolder]: For 166/166 co-relation queries the response was YES. [2023-01-27 20:37:02,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 175 events. 108/175 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 466 event pairs, 0 based on Foata normal form. 16/191 useless extension candidates. Maximal degree in co-relation 289. Up to 91 conditions per place. [2023-01-27 20:37:02,122 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 31 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2023-01-27 20:37:02,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 264 flow [2023-01-27 20:37:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:37:02,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:37:02,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 500 transitions. [2023-01-27 20:37:02,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2023-01-27 20:37:02,124 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 500 transitions. [2023-01-27 20:37:02,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 500 transitions. [2023-01-27 20:37:02,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:37:02,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 500 transitions. [2023-01-27 20:37:02,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:02,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:02,127 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:02,127 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 127 flow. Second operand 5 states and 500 transitions. [2023-01-27 20:37:02,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 264 flow [2023-01-27 20:37:02,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 252 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-27 20:37:02,129 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 144 flow [2023-01-27 20:37:02,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-01-27 20:37:02,130 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 10 predicate places. [2023-01-27 20:37:02,130 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 144 flow [2023-01-27 20:37:02,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.85714285714286) internal successors, (678), 7 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:02,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:37:02,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:37:02,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-27 20:37:02,349 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 [2023-01-27 20:37:02,349 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:37:02,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:37:02,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1197066339, now seen corresponding path program 1 times [2023-01-27 20:37:02,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:37:02,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241017944] [2023-01-27 20:37:02,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:37:02,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:37:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:02,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:02,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:37:02,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241017944] [2023-01-27 20:37:02,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241017944] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:37:02,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464850575] [2023-01-27 20:37:02,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:37:02,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:02,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:37:02,687 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) [2023-01-27 20:37:02,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 20:37:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:02,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-27 20:37:02,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:37:02,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:02,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:37:03,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:03,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464850575] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:37:03,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:37:03,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-01-27 20:37:03,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367770099] [2023-01-27 20:37:03,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:37:03,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:37:03,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:37:03,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:37:03,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:37:03,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 224 [2023-01-27 20:37:03,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 144 flow. Second operand has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:03,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:37:03,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 224 [2023-01-27 20:37:03,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:37:03,512 INFO L130 PetriNetUnfolder]: 260/427 cut-off events. [2023-01-27 20:37:03,513 INFO L131 PetriNetUnfolder]: For 528/528 co-relation queries the response was YES. [2023-01-27 20:37:03,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 427 events. 260/427 cut-off events. For 528/528 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1514 event pairs, 18 based on Foata normal form. 10/437 useless extension candidates. Maximal degree in co-relation 598. Up to 221 conditions per place. [2023-01-27 20:37:03,516 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 55 selfloop transitions, 20 changer transitions 14/89 dead transitions. [2023-01-27 20:37:03,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 89 transitions, 618 flow [2023-01-27 20:37:03,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:37:03,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:37:03,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 915 transitions. [2023-01-27 20:37:03,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40848214285714285 [2023-01-27 20:37:03,519 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 915 transitions. [2023-01-27 20:37:03,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 915 transitions. [2023-01-27 20:37:03,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:37:03,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 915 transitions. [2023-01-27 20:37:03,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.5) internal successors, (915), 10 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:03,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 224.0) internal successors, (2464), 11 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:03,525 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 224.0) internal successors, (2464), 11 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:03,525 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 144 flow. Second operand 10 states and 915 transitions. [2023-01-27 20:37:03,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 89 transitions, 618 flow [2023-01-27 20:37:03,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 89 transitions, 600 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 20:37:03,531 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 307 flow [2023-01-27 20:37:03,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=307, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-01-27 20:37:03,533 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 23 predicate places. [2023-01-27 20:37:03,535 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 307 flow [2023-01-27 20:37:03,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:03,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:37:03,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:37:03,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 20:37:03,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:03,741 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:37:03,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:37:03,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1971463267, now seen corresponding path program 2 times [2023-01-27 20:37:03,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:37:03,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330510923] [2023-01-27 20:37:03,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:37:03,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:37:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:03,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:03,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:37:03,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330510923] [2023-01-27 20:37:04,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330510923] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:37:04,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576490507] [2023-01-27 20:37:04,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:37:04,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:04,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:37:04,001 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) [2023-01-27 20:37:04,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 20:37:04,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:37:04,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:37:04,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-27 20:37:04,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:37:04,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:04,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:37:04,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:04,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576490507] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:37:04,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:37:04,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-01-27 20:37:04,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485187235] [2023-01-27 20:37:04,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:37:04,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:37:04,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:37:04,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:37:04,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:37:04,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 224 [2023-01-27 20:37:04,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 307 flow. Second operand has 13 states, 13 states have (on average 85.84615384615384) internal successors, (1116), 13 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:04,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:37:04,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 224 [2023-01-27 20:37:04,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:37:04,891 INFO L130 PetriNetUnfolder]: 612/1001 cut-off events. [2023-01-27 20:37:04,891 INFO L131 PetriNetUnfolder]: For 2162/2162 co-relation queries the response was YES. [2023-01-27 20:37:04,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4380 conditions, 1001 events. 612/1001 cut-off events. For 2162/2162 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4333 event pairs, 30 based on Foata normal form. 7/1008 useless extension candidates. Maximal degree in co-relation 4336. Up to 537 conditions per place. [2023-01-27 20:37:04,897 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 99 selfloop transitions, 59 changer transitions 7/165 dead transitions. [2023-01-27 20:37:04,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 165 transitions, 1402 flow [2023-01-27 20:37:04,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-27 20:37:04,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-27 20:37:04,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1377 transitions. [2023-01-27 20:37:04,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40982142857142856 [2023-01-27 20:37:04,900 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1377 transitions. [2023-01-27 20:37:04,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1377 transitions. [2023-01-27 20:37:04,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:37:04,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1377 transitions. [2023-01-27 20:37:04,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 91.8) internal successors, (1377), 15 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:04,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 224.0) internal successors, (3584), 16 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:04,906 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 224.0) internal successors, (3584), 16 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:04,906 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 307 flow. Second operand 15 states and 1377 transitions. [2023-01-27 20:37:04,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 165 transitions, 1402 flow [2023-01-27 20:37:04,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 165 transitions, 1259 flow, removed 68 selfloop flow, removed 4 redundant places. [2023-01-27 20:37:04,914 INFO L231 Difference]: Finished difference. Result has 60 places, 86 transitions, 847 flow [2023-01-27 20:37:04,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=847, PETRI_PLACES=60, PETRI_TRANSITIONS=86} [2023-01-27 20:37:04,915 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 41 predicate places. [2023-01-27 20:37:04,916 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 86 transitions, 847 flow [2023-01-27 20:37:04,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 85.84615384615384) internal successors, (1116), 13 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:04,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:37:04,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:37:04,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 20:37:05,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:05,128 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:37:05,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:37:05,128 INFO L85 PathProgramCache]: Analyzing trace with hash -237029505, now seen corresponding path program 3 times [2023-01-27 20:37:05,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:37:05,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77191494] [2023-01-27 20:37:05,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:37:05,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:37:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:05,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:05,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:37:05,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77191494] [2023-01-27 20:37:05,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77191494] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:37:05,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158122752] [2023-01-27 20:37:05,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:37:05,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:05,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:37:05,330 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) [2023-01-27 20:37:05,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 20:37:05,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 20:37:05,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:37:05,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-27 20:37:05,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:37:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:07,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:37:07,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:07,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158122752] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:37:07,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:37:07,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-01-27 20:37:07,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963486495] [2023-01-27 20:37:07,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:37:07,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:37:07,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:37:07,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:37:07,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=104, Unknown=1, NotChecked=0, Total=156 [2023-01-27 20:37:07,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 224 [2023-01-27 20:37:07,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 86 transitions, 847 flow. Second operand has 13 states, 13 states have (on average 85.84615384615384) internal successors, (1116), 13 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:07,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:37:07,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 224 [2023-01-27 20:37:07,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:37:08,507 INFO L130 PetriNetUnfolder]: 1100/1797 cut-off events. [2023-01-27 20:37:08,507 INFO L131 PetriNetUnfolder]: For 7302/7302 co-relation queries the response was YES. [2023-01-27 20:37:08,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9172 conditions, 1797 events. 1100/1797 cut-off events. For 7302/7302 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 8789 event pairs, 172 based on Foata normal form. 4/1801 useless extension candidates. Maximal degree in co-relation 7097. Up to 977 conditions per place. [2023-01-27 20:37:08,518 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 106 selfloop transitions, 80 changer transitions 5/191 dead transitions. [2023-01-27 20:37:08,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 191 transitions, 2112 flow [2023-01-27 20:37:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:37:08,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:37:08,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 908 transitions. [2023-01-27 20:37:08,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40535714285714286 [2023-01-27 20:37:08,520 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 908 transitions. [2023-01-27 20:37:08,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 908 transitions. [2023-01-27 20:37:08,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:37:08,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 908 transitions. [2023-01-27 20:37:08,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 90.8) internal successors, (908), 10 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:08,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 224.0) internal successors, (2464), 11 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:08,525 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 224.0) internal successors, (2464), 11 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:08,525 INFO L175 Difference]: Start difference. First operand has 60 places, 86 transitions, 847 flow. Second operand 10 states and 908 transitions. [2023-01-27 20:37:08,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 191 transitions, 2112 flow [2023-01-27 20:37:08,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 191 transitions, 1928 flow, removed 89 selfloop flow, removed 2 redundant places. [2023-01-27 20:37:08,539 INFO L231 Difference]: Finished difference. Result has 71 places, 132 transitions, 1490 flow [2023-01-27 20:37:08,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1490, PETRI_PLACES=71, PETRI_TRANSITIONS=132} [2023-01-27 20:37:08,540 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 52 predicate places. [2023-01-27 20:37:08,540 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 132 transitions, 1490 flow [2023-01-27 20:37:08,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 85.84615384615384) internal successors, (1116), 13 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:08,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:37:08,541 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:37:08,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-27 20:37:08,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:08,745 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:37:08,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:37:08,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1704426119, now seen corresponding path program 1 times [2023-01-27 20:37:08,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:37:08,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247960075] [2023-01-27 20:37:08,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:37:08,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:37:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:37:08,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:37:08,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247960075] [2023-01-27 20:37:08,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247960075] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:37:08,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104769764] [2023-01-27 20:37:08,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:37:08,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:08,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:37:08,825 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) [2023-01-27 20:37:08,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 20:37:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:08,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 20:37:08,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:37:08,911 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:37:08,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:37:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:37:08,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104769764] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:37:08,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:37:08,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-01-27 20:37:08,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526189498] [2023-01-27 20:37:08,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:37:08,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:37:08,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:37:08,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:37:08,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-01-27 20:37:08,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 224 [2023-01-27 20:37:08,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 132 transitions, 1490 flow. Second operand has 10 states, 10 states have (on average 95.8) internal successors, (958), 10 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:08,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:37:08,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 224 [2023-01-27 20:37:08,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:37:09,423 INFO L130 PetriNetUnfolder]: 2041/3411 cut-off events. [2023-01-27 20:37:09,424 INFO L131 PetriNetUnfolder]: For 19991/19991 co-relation queries the response was YES. [2023-01-27 20:37:09,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18724 conditions, 3411 events. 2041/3411 cut-off events. For 19991/19991 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 19781 event pairs, 67 based on Foata normal form. 64/3475 useless extension candidates. Maximal degree in co-relation 13927. Up to 1821 conditions per place. [2023-01-27 20:37:09,443 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 324 selfloop transitions, 103 changer transitions 5/432 dead transitions. [2023-01-27 20:37:09,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 432 transitions, 5461 flow [2023-01-27 20:37:09,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 20:37:09,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 20:37:09,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1205 transitions. [2023-01-27 20:37:09,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44828869047619047 [2023-01-27 20:37:09,446 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1205 transitions. [2023-01-27 20:37:09,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1205 transitions. [2023-01-27 20:37:09,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:37:09,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1205 transitions. [2023-01-27 20:37:09,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 100.41666666666667) internal successors, (1205), 12 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:09,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:09,451 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:09,451 INFO L175 Difference]: Start difference. First operand has 71 places, 132 transitions, 1490 flow. Second operand 12 states and 1205 transitions. [2023-01-27 20:37:09,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 432 transitions, 5461 flow [2023-01-27 20:37:09,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 432 transitions, 5298 flow, removed 69 selfloop flow, removed 3 redundant places. [2023-01-27 20:37:09,478 INFO L231 Difference]: Finished difference. Result has 87 places, 217 transitions, 3056 flow [2023-01-27 20:37:09,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3056, PETRI_PLACES=87, PETRI_TRANSITIONS=217} [2023-01-27 20:37:09,479 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 68 predicate places. [2023-01-27 20:37:09,479 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 217 transitions, 3056 flow [2023-01-27 20:37:09,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.8) internal successors, (958), 10 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:09,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:37:09,480 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:37:09,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 20:37:09,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:09,685 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:37:09,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:37:09,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1605359529, now seen corresponding path program 2 times [2023-01-27 20:37:09,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:37:09,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944616475] [2023-01-27 20:37:09,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:37:09,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:37:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:10,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:37:10,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944616475] [2023-01-27 20:37:10,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944616475] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:37:10,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427497814] [2023-01-27 20:37:10,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:37:10,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:10,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:37:10,017 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) [2023-01-27 20:37:10,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 20:37:10,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:37:10,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:37:10,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 20:37:10,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:37:13,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:13,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:37:13,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:37:13,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427497814] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:37:13,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:37:13,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 15 [2023-01-27 20:37:13,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478788868] [2023-01-27 20:37:13,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:37:13,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 20:37:13,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:37:13,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 20:37:13,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-01-27 20:37:13,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 224 [2023-01-27 20:37:13,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 217 transitions, 3056 flow. Second operand has 17 states, 17 states have (on average 85.47058823529412) internal successors, (1453), 17 states have internal predecessors, (1453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:13,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:37:13,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 224 [2023-01-27 20:37:13,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:37:15,414 INFO L130 PetriNetUnfolder]: 2497/4190 cut-off events. [2023-01-27 20:37:15,414 INFO L131 PetriNetUnfolder]: For 38200/38200 co-relation queries the response was YES. [2023-01-27 20:37:15,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27532 conditions, 4190 events. 2497/4190 cut-off events. For 38200/38200 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 25238 event pairs, 196 based on Foata normal form. 12/4202 useless extension candidates. Maximal degree in co-relation 24298. Up to 3160 conditions per place. [2023-01-27 20:37:15,483 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 330 selfloop transitions, 86 changer transitions 25/441 dead transitions. [2023-01-27 20:37:15,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 441 transitions, 6700 flow [2023-01-27 20:37:15,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-27 20:37:15,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-27 20:37:15,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1559 transitions. [2023-01-27 20:37:15,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40940126050420167 [2023-01-27 20:37:15,492 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1559 transitions. [2023-01-27 20:37:15,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1559 transitions. [2023-01-27 20:37:15,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:37:15,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1559 transitions. [2023-01-27 20:37:15,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 91.70588235294117) internal successors, (1559), 17 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:15,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 224.0) internal successors, (4032), 18 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:15,503 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 224.0) internal successors, (4032), 18 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:15,503 INFO L175 Difference]: Start difference. First operand has 87 places, 217 transitions, 3056 flow. Second operand 17 states and 1559 transitions. [2023-01-27 20:37:15,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 441 transitions, 6700 flow [2023-01-27 20:37:15,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 441 transitions, 6019 flow, removed 336 selfloop flow, removed 1 redundant places. [2023-01-27 20:37:15,568 INFO L231 Difference]: Finished difference. Result has 109 places, 277 transitions, 4044 flow [2023-01-27 20:37:15,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=2735, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4044, PETRI_PLACES=109, PETRI_TRANSITIONS=277} [2023-01-27 20:37:15,569 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 90 predicate places. [2023-01-27 20:37:15,569 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 277 transitions, 4044 flow [2023-01-27 20:37:15,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 85.47058823529412) internal successors, (1453), 17 states have internal predecessors, (1453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:15,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:37:15,569 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:37:15,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-27 20:37:15,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:15,775 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:37:15,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:37:15,775 INFO L85 PathProgramCache]: Analyzing trace with hash -834738333, now seen corresponding path program 3 times [2023-01-27 20:37:15,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:37:15,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262753565] [2023-01-27 20:37:15,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:37:15,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:37:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:15,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:37:15,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:37:15,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262753565] [2023-01-27 20:37:15,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262753565] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:37:15,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410310298] [2023-01-27 20:37:15,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:37:15,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:15,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:37:15,982 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) [2023-01-27 20:37:15,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 20:37:16,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-27 20:37:16,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:37:16,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-27 20:37:16,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:37:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:17,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:37:17,791 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:37:17,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410310298] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:37:17,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:37:17,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 13 [2023-01-27 20:37:17,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249395226] [2023-01-27 20:37:17,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:37:17,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 20:37:17,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:37:17,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 20:37:17,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-01-27 20:37:17,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 224 [2023-01-27 20:37:17,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 277 transitions, 4044 flow. Second operand has 15 states, 15 states have (on average 91.53333333333333) internal successors, (1373), 15 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:17,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:37:17,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 224 [2023-01-27 20:37:17,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:37:20,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 20:37:22,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-27 20:37:24,258 INFO L130 PetriNetUnfolder]: 2814/4755 cut-off events. [2023-01-27 20:37:24,258 INFO L131 PetriNetUnfolder]: For 52633/52633 co-relation queries the response was YES. [2023-01-27 20:37:24,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31748 conditions, 4755 events. 2814/4755 cut-off events. For 52633/52633 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 29758 event pairs, 210 based on Foata normal form. 26/4781 useless extension candidates. Maximal degree in co-relation 31179. Up to 3738 conditions per place. [2023-01-27 20:37:24,344 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 344 selfloop transitions, 128 changer transitions 18/490 dead transitions. [2023-01-27 20:37:24,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 490 transitions, 7701 flow [2023-01-27 20:37:24,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-27 20:37:24,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-27 20:37:24,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2042 transitions. [2023-01-27 20:37:24,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340986394557823 [2023-01-27 20:37:24,351 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2042 transitions. [2023-01-27 20:37:24,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2042 transitions. [2023-01-27 20:37:24,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:37:24,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2042 transitions. [2023-01-27 20:37:24,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 97.23809523809524) internal successors, (2042), 21 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:24,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 224.0) internal successors, (4928), 22 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:24,362 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 224.0) internal successors, (4928), 22 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:24,362 INFO L175 Difference]: Start difference. First operand has 109 places, 277 transitions, 4044 flow. Second operand 21 states and 2042 transitions. [2023-01-27 20:37:24,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 490 transitions, 7701 flow [2023-01-27 20:37:24,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 490 transitions, 7107 flow, removed 287 selfloop flow, removed 7 redundant places. [2023-01-27 20:37:24,461 INFO L231 Difference]: Finished difference. Result has 132 places, 362 transitions, 5813 flow [2023-01-27 20:37:24,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=3521, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5813, PETRI_PLACES=132, PETRI_TRANSITIONS=362} [2023-01-27 20:37:24,462 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 113 predicate places. [2023-01-27 20:37:24,462 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 362 transitions, 5813 flow [2023-01-27 20:37:24,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 91.53333333333333) internal successors, (1373), 15 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:24,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:37:24,463 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:37:24,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-27 20:37:24,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:24,668 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:37:24,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:37:24,668 INFO L85 PathProgramCache]: Analyzing trace with hash -922612837, now seen corresponding path program 4 times [2023-01-27 20:37:24,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:37:24,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058951570] [2023-01-27 20:37:24,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:37:24,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:37:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:37:24,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:37:24,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058951570] [2023-01-27 20:37:24,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058951570] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:37:24,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242726688] [2023-01-27 20:37:24,768 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:37:24,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:24,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:37:24,769 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) [2023-01-27 20:37:24,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 20:37:24,816 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:37:24,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:37:24,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 20:37:24,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:37:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:37:24,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:37:24,912 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:37:24,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242726688] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:37:24,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:37:24,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2023-01-27 20:37:24,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555037261] [2023-01-27 20:37:24,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:37:24,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:37:24,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:37:24,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:37:24,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:37:24,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 224 [2023-01-27 20:37:24,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 362 transitions, 5813 flow. Second operand has 9 states, 9 states have (on average 96.22222222222223) internal successors, (866), 9 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:24,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:37:24,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 224 [2023-01-27 20:37:24,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:37:25,901 INFO L130 PetriNetUnfolder]: 3178/5631 cut-off events. [2023-01-27 20:37:25,901 INFO L131 PetriNetUnfolder]: For 69364/69364 co-relation queries the response was YES. [2023-01-27 20:37:25,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38517 conditions, 5631 events. 3178/5631 cut-off events. For 69364/69364 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 38811 event pairs, 292 based on Foata normal form. 36/5667 useless extension candidates. Maximal degree in co-relation 37155. Up to 2211 conditions per place. [2023-01-27 20:37:25,939 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 330 selfloop transitions, 312 changer transitions 6/648 dead transitions. [2023-01-27 20:37:25,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 648 transitions, 11220 flow [2023-01-27 20:37:25,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 20:37:25,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 20:37:25,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1395 transitions. [2023-01-27 20:37:25,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448341836734694 [2023-01-27 20:37:25,941 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1395 transitions. [2023-01-27 20:37:25,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1395 transitions. [2023-01-27 20:37:25,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:37:25,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1395 transitions. [2023-01-27 20:37:25,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 99.64285714285714) internal successors, (1395), 14 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:25,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 224.0) internal successors, (3360), 15 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:25,949 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 224.0) internal successors, (3360), 15 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:25,949 INFO L175 Difference]: Start difference. First operand has 132 places, 362 transitions, 5813 flow. Second operand 14 states and 1395 transitions. [2023-01-27 20:37:25,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 648 transitions, 11220 flow [2023-01-27 20:37:26,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 648 transitions, 10191 flow, removed 502 selfloop flow, removed 7 redundant places. [2023-01-27 20:37:26,161 INFO L231 Difference]: Finished difference. Result has 146 places, 458 transitions, 7892 flow [2023-01-27 20:37:26,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=5058, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7892, PETRI_PLACES=146, PETRI_TRANSITIONS=458} [2023-01-27 20:37:26,163 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 127 predicate places. [2023-01-27 20:37:26,163 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 458 transitions, 7892 flow [2023-01-27 20:37:26,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 96.22222222222223) internal successors, (866), 9 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:26,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:37:26,163 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:37:26,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-27 20:37:26,368 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,SelfDestructingSolverStorable10 [2023-01-27 20:37:26,368 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:37:26,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:37:26,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1944370241, now seen corresponding path program 5 times [2023-01-27 20:37:26,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:37:26,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453539133] [2023-01-27 20:37:26,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:37:26,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:37:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:37:26,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:37:26,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453539133] [2023-01-27 20:37:26,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453539133] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:37:26,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212480992] [2023-01-27 20:37:26,589 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:37:26,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:26,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:37:26,590 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) [2023-01-27 20:37:26,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-27 20:37:26,728 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-27 20:37:26,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:37:26,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 20:37:26,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:37:26,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:26,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:37:27,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:27,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212480992] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:37:27,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:37:27,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 16 [2023-01-27 20:37:27,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945286509] [2023-01-27 20:37:27,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:37:27,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 20:37:27,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:37:27,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 20:37:27,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-01-27 20:37:27,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 224 [2023-01-27 20:37:27,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 458 transitions, 7892 flow. Second operand has 18 states, 18 states have (on average 91.38888888888889) internal successors, (1645), 18 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:27,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:37:27,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 224 [2023-01-27 20:37:27,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:37:30,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-27 20:37:32,373 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 [0] [2023-01-27 20:37:34,821 INFO L130 PetriNetUnfolder]: 4252/7473 cut-off events. [2023-01-27 20:37:34,821 INFO L131 PetriNetUnfolder]: For 110180/110180 co-relation queries the response was YES. [2023-01-27 20:37:34,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56001 conditions, 7473 events. 4252/7473 cut-off events. For 110180/110180 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 53686 event pairs, 234 based on Foata normal form. 19/7492 useless extension candidates. Maximal degree in co-relation 54533. Up to 2997 conditions per place. [2023-01-27 20:37:34,955 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 348 selfloop transitions, 560 changer transitions 21/929 dead transitions. [2023-01-27 20:37:34,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 929 transitions, 17596 flow [2023-01-27 20:37:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-01-27 20:37:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-01-27 20:37:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3264 transitions. [2023-01-27 20:37:34,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-01-27 20:37:34,961 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3264 transitions. [2023-01-27 20:37:34,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3264 transitions. [2023-01-27 20:37:34,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:37:34,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3264 transitions. [2023-01-27 20:37:34,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 96.0) internal successors, (3264), 34 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:34,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 224.0) internal successors, (7840), 35 states have internal predecessors, (7840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:34,997 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 224.0) internal successors, (7840), 35 states have internal predecessors, (7840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:34,997 INFO L175 Difference]: Start difference. First operand has 146 places, 458 transitions, 7892 flow. Second operand 34 states and 3264 transitions. [2023-01-27 20:37:34,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 929 transitions, 17596 flow [2023-01-27 20:37:35,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 929 transitions, 16663 flow, removed 454 selfloop flow, removed 3 redundant places. [2023-01-27 20:37:35,502 INFO L231 Difference]: Finished difference. Result has 188 places, 743 transitions, 15228 flow [2023-01-27 20:37:35,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=7473, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=15228, PETRI_PLACES=188, PETRI_TRANSITIONS=743} [2023-01-27 20:37:35,503 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 169 predicate places. [2023-01-27 20:37:35,503 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 743 transitions, 15228 flow [2023-01-27 20:37:35,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 91.38888888888889) internal successors, (1645), 18 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:35,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:37:35,504 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:37:35,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-27 20:37:35,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:35,708 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:37:35,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:37:35,709 INFO L85 PathProgramCache]: Analyzing trace with hash -620121257, now seen corresponding path program 6 times [2023-01-27 20:37:35,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:37:35,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836524297] [2023-01-27 20:37:35,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:37:35,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:37:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:35,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:35,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:37:35,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836524297] [2023-01-27 20:37:35,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836524297] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:37:35,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969793559] [2023-01-27 20:37:35,809 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:37:35,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:35,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:37:35,810 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) [2023-01-27 20:37:35,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-27 20:37:35,865 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 20:37:35,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:37:35,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 20:37:35,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:37:35,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:35,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:37:35,954 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:35,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969793559] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:37:35,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:37:35,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-01-27 20:37:35,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417079095] [2023-01-27 20:37:35,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:37:35,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:37:35,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:37:35,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:37:35,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-01-27 20:37:35,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 224 [2023-01-27 20:37:35,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 743 transitions, 15228 flow. Second operand has 10 states, 10 states have (on average 95.9) internal successors, (959), 10 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:35,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:37:35,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 224 [2023-01-27 20:37:35,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:37:38,126 INFO L130 PetriNetUnfolder]: 5127/9004 cut-off events. [2023-01-27 20:37:38,126 INFO L131 PetriNetUnfolder]: For 146295/146295 co-relation queries the response was YES. [2023-01-27 20:37:38,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71022 conditions, 9004 events. 5127/9004 cut-off events. For 146295/146295 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 66561 event pairs, 420 based on Foata normal form. 174/9178 useless extension candidates. Maximal degree in co-relation 68751. Up to 3243 conditions per place. [2023-01-27 20:37:38,217 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 563 selfloop transitions, 620 changer transitions 0/1183 dead transitions. [2023-01-27 20:37:38,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 1183 transitions, 25183 flow [2023-01-27 20:37:38,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 20:37:38,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 20:37:38,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1398 transitions. [2023-01-27 20:37:38,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4457908163265306 [2023-01-27 20:37:38,220 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1398 transitions. [2023-01-27 20:37:38,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1398 transitions. [2023-01-27 20:37:38,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:37:38,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1398 transitions. [2023-01-27 20:37:38,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 99.85714285714286) internal successors, (1398), 14 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:38,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 224.0) internal successors, (3360), 15 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:38,224 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 224.0) internal successors, (3360), 15 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:38,224 INFO L175 Difference]: Start difference. First operand has 188 places, 743 transitions, 15228 flow. Second operand 14 states and 1398 transitions. [2023-01-27 20:37:38,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 1183 transitions, 25183 flow [2023-01-27 20:37:39,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 1183 transitions, 22201 flow, removed 1472 selfloop flow, removed 7 redundant places. [2023-01-27 20:37:39,315 INFO L231 Difference]: Finished difference. Result has 202 places, 937 transitions, 19524 flow [2023-01-27 20:37:39,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=13119, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=435, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=19524, PETRI_PLACES=202, PETRI_TRANSITIONS=937} [2023-01-27 20:37:39,316 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 183 predicate places. [2023-01-27 20:37:39,316 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 937 transitions, 19524 flow [2023-01-27 20:37:39,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.9) internal successors, (959), 10 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:39,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:37:39,316 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:37:39,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-27 20:37:39,521 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,SelfDestructingSolverStorable12 [2023-01-27 20:37:39,521 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:37:39,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:37:39,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1394518185, now seen corresponding path program 7 times [2023-01-27 20:37:39,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:37:39,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396437309] [2023-01-27 20:37:39,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:37:39,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:37:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:39,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:39,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:37:39,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396437309] [2023-01-27 20:37:39,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396437309] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:37:39,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306592447] [2023-01-27 20:37:39,615 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 20:37:39,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:39,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:37:39,616 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) [2023-01-27 20:37:39,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-27 20:37:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:39,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 20:37:39,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:37:39,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:39,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:37:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:37:39,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306592447] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:37:39,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:37:39,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2023-01-27 20:37:39,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44178672] [2023-01-27 20:37:39,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:37:39,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:37:39,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:37:39,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:37:39,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:37:39,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 224 [2023-01-27 20:37:39,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 937 transitions, 19524 flow. Second operand has 9 states, 9 states have (on average 96.33333333333333) internal successors, (867), 9 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:39,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:37:39,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 224 [2023-01-27 20:37:39,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:37:42,179 INFO L130 PetriNetUnfolder]: 5467/9563 cut-off events. [2023-01-27 20:37:42,179 INFO L131 PetriNetUnfolder]: For 178430/178430 co-relation queries the response was YES. [2023-01-27 20:37:42,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79698 conditions, 9563 events. 5467/9563 cut-off events. For 178430/178430 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 71716 event pairs, 108 based on Foata normal form. 100/9663 useless extension candidates. Maximal degree in co-relation 77678. Up to 3459 conditions per place. [2023-01-27 20:37:42,256 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 963 selfloop transitions, 481 changer transitions 0/1444 dead transitions. [2023-01-27 20:37:42,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 1444 transitions, 29279 flow [2023-01-27 20:37:42,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-27 20:37:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-27 20:37:42,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1491 transitions. [2023-01-27 20:37:42,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2023-01-27 20:37:42,263 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1491 transitions. [2023-01-27 20:37:42,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1491 transitions. [2023-01-27 20:37:42,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:37:42,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1491 transitions. [2023-01-27 20:37:42,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 99.4) internal successors, (1491), 15 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:42,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 224.0) internal successors, (3584), 16 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:42,267 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 224.0) internal successors, (3584), 16 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:42,267 INFO L175 Difference]: Start difference. First operand has 202 places, 937 transitions, 19524 flow. Second operand 15 states and 1491 transitions. [2023-01-27 20:37:42,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 1444 transitions, 29279 flow [2023-01-27 20:37:43,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 1444 transitions, 28784 flow, removed 197 selfloop flow, removed 4 redundant places. [2023-01-27 20:37:43,681 INFO L231 Difference]: Finished difference. Result has 216 places, 1030 transitions, 22576 flow [2023-01-27 20:37:43,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=18743, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=919, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=382, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=22576, PETRI_PLACES=216, PETRI_TRANSITIONS=1030} [2023-01-27 20:37:43,682 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 197 predicate places. [2023-01-27 20:37:43,682 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 1030 transitions, 22576 flow [2023-01-27 20:37:43,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 96.33333333333333) internal successors, (867), 9 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:43,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:37:43,682 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:37:43,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-01-27 20:37:43,886 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,SelfDestructingSolverStorable13 [2023-01-27 20:37:43,887 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:37:43,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:37:43,887 INFO L85 PathProgramCache]: Analyzing trace with hash -231131307, now seen corresponding path program 8 times [2023-01-27 20:37:43,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:37:43,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577267520] [2023-01-27 20:37:43,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:37:43,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:37:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:44,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:44,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:37:44,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577267520] [2023-01-27 20:37:44,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577267520] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:37:44,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167929880] [2023-01-27 20:37:44,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:37:44,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:44,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:37:44,072 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) [2023-01-27 20:37:44,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-27 20:37:44,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:37:44,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:37:44,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 20:37:44,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:37:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:44,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:37:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:37:44,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167929880] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:37:44,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:37:44,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 16 [2023-01-27 20:37:44,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154317152] [2023-01-27 20:37:44,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:37:44,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 20:37:44,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:37:44,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 20:37:44,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2023-01-27 20:37:44,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 224 [2023-01-27 20:37:44,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 1030 transitions, 22576 flow. Second operand has 18 states, 18 states have (on average 91.38888888888889) internal successors, (1645), 18 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:44,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:37:44,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 224 [2023-01-27 20:37:44,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:37:53,733 INFO L130 PetriNetUnfolder]: 7949/13902 cut-off events. [2023-01-27 20:37:53,733 INFO L131 PetriNetUnfolder]: For 320878/320878 co-relation queries the response was YES. [2023-01-27 20:37:53,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126747 conditions, 13902 events. 7949/13902 cut-off events. For 320878/320878 co-relation queries the response was YES. Maximal size of possible extension queue 990. Compared 109719 event pairs, 515 based on Foata normal form. 40/13942 useless extension candidates. Maximal degree in co-relation 123699. Up to 5208 conditions per place. [2023-01-27 20:37:53,902 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 691 selfloop transitions, 1170 changer transitions 37/1898 dead transitions. [2023-01-27 20:37:53,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 1898 transitions, 46685 flow [2023-01-27 20:37:53,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-01-27 20:37:53,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-01-27 20:37:53,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3841 transitions. [2023-01-27 20:37:53,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42868303571428573 [2023-01-27 20:37:53,929 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3841 transitions. [2023-01-27 20:37:53,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3841 transitions. [2023-01-27 20:37:53,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:37:53,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3841 transitions. [2023-01-27 20:37:53,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 96.025) internal successors, (3841), 40 states have internal predecessors, (3841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:53,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 224.0) internal successors, (9184), 41 states have internal predecessors, (9184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:53,959 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 224.0) internal successors, (9184), 41 states have internal predecessors, (9184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:53,959 INFO L175 Difference]: Start difference. First operand has 216 places, 1030 transitions, 22576 flow. Second operand 40 states and 3841 transitions. [2023-01-27 20:37:53,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 1898 transitions, 46685 flow [2023-01-27 20:37:58,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 1898 transitions, 45448 flow, removed 614 selfloop flow, removed 1 redundant places. [2023-01-27 20:37:58,112 INFO L231 Difference]: Finished difference. Result has 267 places, 1616 transitions, 42534 flow [2023-01-27 20:37:58,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=22209, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1030, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=660, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=42534, PETRI_PLACES=267, PETRI_TRANSITIONS=1616} [2023-01-27 20:37:58,113 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 248 predicate places. [2023-01-27 20:37:58,113 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 1616 transitions, 42534 flow [2023-01-27 20:37:58,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 91.38888888888889) internal successors, (1645), 18 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:58,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:37:58,114 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:37:58,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-27 20:37:58,319 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,SelfDestructingSolverStorable14 [2023-01-27 20:37:58,319 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:37:58,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:37:58,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1040135160, now seen corresponding path program 9 times [2023-01-27 20:37:58,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:37:58,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662356137] [2023-01-27 20:37:58,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:37:58,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:37:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:37:58,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:37:58,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:37:58,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662356137] [2023-01-27 20:37:58,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662356137] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:37:58,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157613534] [2023-01-27 20:37:58,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:37:58,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:37:58,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:37:58,418 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) [2023-01-27 20:37:58,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-27 20:37:58,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-27 20:37:58,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:37:58,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 20:37:58,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:37:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:37:58,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:37:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:37:58,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157613534] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:37:58,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:37:58,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-01-27 20:37:58,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817537006] [2023-01-27 20:37:58,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:37:58,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:37:58,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:37:58,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:37:58,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-01-27 20:37:58,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 224 [2023-01-27 20:37:58,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 1616 transitions, 42534 flow. Second operand has 10 states, 10 states have (on average 96.4) internal successors, (964), 10 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:37:58,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:37:58,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 224 [2023-01-27 20:37:58,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:38:05,213 INFO L130 PetriNetUnfolder]: 8332/14444 cut-off events. [2023-01-27 20:38:05,213 INFO L131 PetriNetUnfolder]: For 392758/392758 co-relation queries the response was YES. [2023-01-27 20:38:05,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141471 conditions, 14444 events. 8332/14444 cut-off events. For 392758/392758 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 112825 event pairs, 780 based on Foata normal form. 634/15078 useless extension candidates. Maximal degree in co-relation 138102. Up to 12081 conditions per place. [2023-01-27 20:38:05,351 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 1622 selfloop transitions, 300 changer transitions 0/1922 dead transitions. [2023-01-27 20:38:05,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 1922 transitions, 52614 flow [2023-01-27 20:38:05,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 20:38:05,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 20:38:05,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1311 transitions. [2023-01-27 20:38:05,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45020604395604397 [2023-01-27 20:38:05,362 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1311 transitions. [2023-01-27 20:38:05,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1311 transitions. [2023-01-27 20:38:05,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:38:05,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1311 transitions. [2023-01-27 20:38:05,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 100.84615384615384) internal successors, (1311), 13 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:05,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 224.0) internal successors, (3136), 14 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:05,375 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 224.0) internal successors, (3136), 14 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:05,375 INFO L175 Difference]: Start difference. First operand has 267 places, 1616 transitions, 42534 flow. Second operand 13 states and 1311 transitions. [2023-01-27 20:38:05,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 1922 transitions, 52614 flow [2023-01-27 20:38:09,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 1922 transitions, 47639 flow, removed 2469 selfloop flow, removed 5 redundant places. [2023-01-27 20:38:09,917 INFO L231 Difference]: Finished difference. Result has 280 places, 1769 transitions, 42750 flow [2023-01-27 20:38:09,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=36707, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=42750, PETRI_PLACES=280, PETRI_TRANSITIONS=1769} [2023-01-27 20:38:09,919 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 261 predicate places. [2023-01-27 20:38:09,919 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 1769 transitions, 42750 flow [2023-01-27 20:38:09,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 96.4) internal successors, (964), 10 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:09,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:38:09,919 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:38:09,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-27 20:38:10,123 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,SelfDestructingSolverStorable15 [2023-01-27 20:38:10,124 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:38:10,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:38:10,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1915724884, now seen corresponding path program 10 times [2023-01-27 20:38:10,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:38:10,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607919867] [2023-01-27 20:38:10,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:38:10,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:38:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:38:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:38:10,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:38:10,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607919867] [2023-01-27 20:38:10,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607919867] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:38:10,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327507014] [2023-01-27 20:38:10,160 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:38:10,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:38:10,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:38:10,161 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) [2023-01-27 20:38:10,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-27 20:38:10,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:38:10,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:38:10,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-27 20:38:10,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:38:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:38:10,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:38:10,253 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:38:10,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327507014] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:38:10,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:38:10,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-01-27 20:38:10,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478322123] [2023-01-27 20:38:10,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:38:10,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:38:10,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:38:10,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:38:10,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:38:10,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 224 [2023-01-27 20:38:10,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 1769 transitions, 42750 flow. Second operand has 8 states, 8 states have (on average 99.875) internal successors, (799), 8 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:10,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:38:10,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 224 [2023-01-27 20:38:10,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:38:14,512 INFO L130 PetriNetUnfolder]: 5388/9404 cut-off events. [2023-01-27 20:38:14,512 INFO L131 PetriNetUnfolder]: For 259107/259107 co-relation queries the response was YES. [2023-01-27 20:38:14,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86884 conditions, 9404 events. 5388/9404 cut-off events. For 259107/259107 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 69365 event pairs, 394 based on Foata normal form. 574/9978 useless extension candidates. Maximal degree in co-relation 86486. Up to 5479 conditions per place. [2023-01-27 20:38:14,595 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 1028 selfloop transitions, 305 changer transitions 0/1333 dead transitions. [2023-01-27 20:38:14,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 1333 transitions, 34078 flow [2023-01-27 20:38:14,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:38:14,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:38:14,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 526 transitions. [2023-01-27 20:38:14,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46964285714285714 [2023-01-27 20:38:14,597 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 526 transitions. [2023-01-27 20:38:14,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 526 transitions. [2023-01-27 20:38:14,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:38:14,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 526 transitions. [2023-01-27 20:38:14,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:14,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:14,598 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:14,598 INFO L175 Difference]: Start difference. First operand has 280 places, 1769 transitions, 42750 flow. Second operand 5 states and 526 transitions. [2023-01-27 20:38:14,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 1333 transitions, 34078 flow [2023-01-27 20:38:16,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 1333 transitions, 31323 flow, removed 728 selfloop flow, removed 16 redundant places. [2023-01-27 20:38:17,008 INFO L231 Difference]: Finished difference. Result has 269 places, 1194 transitions, 26935 flow [2023-01-27 20:38:17,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=24403, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=848, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=26935, PETRI_PLACES=269, PETRI_TRANSITIONS=1194} [2023-01-27 20:38:17,009 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 250 predicate places. [2023-01-27 20:38:17,009 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 1194 transitions, 26935 flow [2023-01-27 20:38:17,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 99.875) internal successors, (799), 8 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:17,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:38:17,010 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:38:17,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-01-27 20:38:17,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:38:17,215 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:38:17,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:38:17,215 INFO L85 PathProgramCache]: Analyzing trace with hash 793995680, now seen corresponding path program 11 times [2023-01-27 20:38:17,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:38:17,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521778514] [2023-01-27 20:38:17,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:38:17,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:38:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:38:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:38:17,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:38:17,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521778514] [2023-01-27 20:38:17,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521778514] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:38:17,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103852075] [2023-01-27 20:38:17,274 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:38:17,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:38:17,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:38:17,290 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) [2023-01-27 20:38:17,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-27 20:38:17,344 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-01-27 20:38:17,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:38:17,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 20:38:17,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:38:17,391 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:38:17,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:38:17,419 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:38:17,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103852075] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:38:17,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:38:17,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2023-01-27 20:38:17,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34603232] [2023-01-27 20:38:17,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:38:17,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:38:17,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:38:17,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:38:17,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:38:17,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 224 [2023-01-27 20:38:17,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 1194 transitions, 26935 flow. Second operand has 9 states, 9 states have (on average 96.33333333333333) internal successors, (867), 9 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:17,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:38:17,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 224 [2023-01-27 20:38:17,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:38:20,434 INFO L130 PetriNetUnfolder]: 5508/9723 cut-off events. [2023-01-27 20:38:20,434 INFO L131 PetriNetUnfolder]: For 238108/238108 co-relation queries the response was YES. [2023-01-27 20:38:20,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88502 conditions, 9723 events. 5508/9723 cut-off events. For 238108/238108 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 73035 event pairs, 256 based on Foata normal form. 14/9737 useless extension candidates. Maximal degree in co-relation 88170. Up to 6515 conditions per place. [2023-01-27 20:38:20,525 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 1176 selfloop transitions, 154 changer transitions 21/1351 dead transitions. [2023-01-27 20:38:20,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 1351 transitions, 32191 flow [2023-01-27 20:38:20,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-27 20:38:20,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-27 20:38:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1486 transitions. [2023-01-27 20:38:20,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226190476190474 [2023-01-27 20:38:20,528 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1486 transitions. [2023-01-27 20:38:20,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1486 transitions. [2023-01-27 20:38:20,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:38:20,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1486 transitions. [2023-01-27 20:38:20,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:20,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 224.0) internal successors, (3584), 16 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:20,534 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 224.0) internal successors, (3584), 16 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:20,534 INFO L175 Difference]: Start difference. First operand has 269 places, 1194 transitions, 26935 flow. Second operand 15 states and 1486 transitions. [2023-01-27 20:38:20,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 1351 transitions, 32191 flow [2023-01-27 20:38:22,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 1351 transitions, 31926 flow, removed 129 selfloop flow, removed 2 redundant places. [2023-01-27 20:38:22,865 INFO L231 Difference]: Finished difference. Result has 285 places, 1242 transitions, 28102 flow [2023-01-27 20:38:22,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=26229, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1046, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=28102, PETRI_PLACES=285, PETRI_TRANSITIONS=1242} [2023-01-27 20:38:22,866 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 266 predicate places. [2023-01-27 20:38:22,866 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 1242 transitions, 28102 flow [2023-01-27 20:38:22,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 96.33333333333333) internal successors, (867), 9 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:22,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:38:22,867 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:38:22,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-27 20:38:23,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-27 20:38:23,074 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:38:23,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:38:23,074 INFO L85 PathProgramCache]: Analyzing trace with hash -965795692, now seen corresponding path program 12 times [2023-01-27 20:38:23,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:38:23,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230301291] [2023-01-27 20:38:23,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:38:23,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:38:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:38:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:38:23,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:38:23,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230301291] [2023-01-27 20:38:23,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230301291] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:38:23,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422029782] [2023-01-27 20:38:23,149 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:38:23,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:38:23,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:38:23,151 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) [2023-01-27 20:38:23,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-27 20:38:23,207 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-01-27 20:38:23,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:38:23,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 20:38:23,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:38:23,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:38:23,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:38:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:38:23,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422029782] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:38:23,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:38:23,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-01-27 20:38:23,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301656239] [2023-01-27 20:38:23,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:38:23,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:38:23,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:38:23,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:38:23,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-01-27 20:38:23,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 224 [2023-01-27 20:38:23,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 1242 transitions, 28102 flow. Second operand has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:23,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:38:23,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 224 [2023-01-27 20:38:23,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:38:27,267 INFO L130 PetriNetUnfolder]: 6393/11434 cut-off events. [2023-01-27 20:38:27,267 INFO L131 PetriNetUnfolder]: For 324491/324491 co-relation queries the response was YES. [2023-01-27 20:38:27,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106174 conditions, 11434 events. 6393/11434 cut-off events. For 324491/324491 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 89061 event pairs, 242 based on Foata normal form. 212/11646 useless extension candidates. Maximal degree in co-relation 105136. Up to 4621 conditions per place. [2023-01-27 20:38:27,358 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 1098 selfloop transitions, 462 changer transitions 121/1681 dead transitions. [2023-01-27 20:38:27,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 1681 transitions, 39184 flow [2023-01-27 20:38:27,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 20:38:27,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 20:38:27,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1192 transitions. [2023-01-27 20:38:27,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44345238095238093 [2023-01-27 20:38:27,359 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1192 transitions. [2023-01-27 20:38:27,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1192 transitions. [2023-01-27 20:38:27,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:38:27,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1192 transitions. [2023-01-27 20:38:27,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 99.33333333333333) internal successors, (1192), 12 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:27,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:27,363 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:27,363 INFO L175 Difference]: Start difference. First operand has 285 places, 1242 transitions, 28102 flow. Second operand 12 states and 1192 transitions. [2023-01-27 20:38:27,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 1681 transitions, 39184 flow [2023-01-27 20:38:30,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 1681 transitions, 38587 flow, removed 292 selfloop flow, removed 2 redundant places. [2023-01-27 20:38:30,258 INFO L231 Difference]: Finished difference. Result has 300 places, 1296 transitions, 30808 flow [2023-01-27 20:38:30,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=25933, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=739, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=30808, PETRI_PLACES=300, PETRI_TRANSITIONS=1296} [2023-01-27 20:38:30,260 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 281 predicate places. [2023-01-27 20:38:30,260 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 1296 transitions, 30808 flow [2023-01-27 20:38:30,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:30,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:38:30,260 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:38:30,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-01-27 20:38:30,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:38:30,465 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:38:30,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:38:30,465 INFO L85 PathProgramCache]: Analyzing trace with hash 92124486, now seen corresponding path program 13 times [2023-01-27 20:38:30,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:38:30,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461629292] [2023-01-27 20:38:30,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:38:30,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:38:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:38:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:38:30,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:38:30,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461629292] [2023-01-27 20:38:30,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461629292] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:38:30,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291270024] [2023-01-27 20:38:30,551 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 20:38:30,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:38:30,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:38:30,552 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) [2023-01-27 20:38:30,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-27 20:38:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:38:30,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 20:38:30,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:38:30,658 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:38:30,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:38:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:38:30,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291270024] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:38:30,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:38:30,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2023-01-27 20:38:30,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562281080] [2023-01-27 20:38:30,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:38:30,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:38:30,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:38:30,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:38:30,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:38:30,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 224 [2023-01-27 20:38:30,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 1296 transitions, 30808 flow. Second operand has 9 states, 9 states have (on average 96.44444444444444) internal successors, (868), 9 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:30,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:38:30,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 224 [2023-01-27 20:38:30,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:38:34,614 INFO L130 PetriNetUnfolder]: 6075/10843 cut-off events. [2023-01-27 20:38:34,614 INFO L131 PetriNetUnfolder]: For 368161/368161 co-relation queries the response was YES. [2023-01-27 20:38:34,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106258 conditions, 10843 events. 6075/10843 cut-off events. For 368161/368161 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 82912 event pairs, 468 based on Foata normal form. 366/11209 useless extension candidates. Maximal degree in co-relation 105029. Up to 6449 conditions per place. [2023-01-27 20:38:34,717 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 998 selfloop transitions, 540 changer transitions 2/1540 dead transitions. [2023-01-27 20:38:34,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 1540 transitions, 38560 flow [2023-01-27 20:38:34,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 20:38:34,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 20:38:34,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1100 transitions. [2023-01-27 20:38:34,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2023-01-27 20:38:34,719 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1100 transitions. [2023-01-27 20:38:34,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1100 transitions. [2023-01-27 20:38:34,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:38:34,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1100 transitions. [2023-01-27 20:38:34,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 100.0) internal successors, (1100), 11 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:34,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 224.0) internal successors, (2688), 12 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:34,722 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 224.0) internal successors, (2688), 12 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:34,722 INFO L175 Difference]: Start difference. First operand has 300 places, 1296 transitions, 30808 flow. Second operand 11 states and 1100 transitions. [2023-01-27 20:38:34,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 1540 transitions, 38560 flow [2023-01-27 20:38:38,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 1540 transitions, 36506 flow, removed 992 selfloop flow, removed 7 redundant places. [2023-01-27 20:38:38,362 INFO L231 Difference]: Finished difference. Result has 305 places, 1356 transitions, 32443 flow [2023-01-27 20:38:38,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=28768, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=471, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=791, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=32443, PETRI_PLACES=305, PETRI_TRANSITIONS=1356} [2023-01-27 20:38:38,363 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 286 predicate places. [2023-01-27 20:38:38,363 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 1356 transitions, 32443 flow [2023-01-27 20:38:38,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 96.44444444444444) internal successors, (868), 9 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:38,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:38:38,364 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:38:38,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-01-27 20:38:38,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:38:38,568 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:38:38,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:38:38,568 INFO L85 PathProgramCache]: Analyzing trace with hash -675962772, now seen corresponding path program 14 times [2023-01-27 20:38:38,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:38:38,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521540791] [2023-01-27 20:38:38,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:38:38,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:38:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:38:38,607 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:38:38,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:38:38,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521540791] [2023-01-27 20:38:38,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521540791] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:38:38,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:38:38,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:38:38,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135778456] [2023-01-27 20:38:38,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:38:38,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:38:38,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:38:38,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:38:38,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:38:38,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 224 [2023-01-27 20:38:38,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 1356 transitions, 32443 flow. Second operand has 5 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:38,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:38:38,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 224 [2023-01-27 20:38:38,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:38:41,976 INFO L130 PetriNetUnfolder]: 4816/8930 cut-off events. [2023-01-27 20:38:41,976 INFO L131 PetriNetUnfolder]: For 278846/278846 co-relation queries the response was YES. [2023-01-27 20:38:42,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86862 conditions, 8930 events. 4816/8930 cut-off events. For 278846/278846 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 68433 event pairs, 1146 based on Foata normal form. 402/9332 useless extension candidates. Maximal degree in co-relation 85057. Up to 4968 conditions per place. [2023-01-27 20:38:42,056 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 878 selfloop transitions, 234 changer transitions 220/1332 dead transitions. [2023-01-27 20:38:42,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 1332 transitions, 35452 flow [2023-01-27 20:38:42,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:38:42,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:38:42,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 421 transitions. [2023-01-27 20:38:42,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46986607142857145 [2023-01-27 20:38:42,058 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 421 transitions. [2023-01-27 20:38:42,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 421 transitions. [2023-01-27 20:38:42,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:38:42,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 421 transitions. [2023-01-27 20:38:42,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:42,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:42,059 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:42,059 INFO L175 Difference]: Start difference. First operand has 305 places, 1356 transitions, 32443 flow. Second operand 4 states and 421 transitions. [2023-01-27 20:38:42,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 1332 transitions, 35452 flow [2023-01-27 20:38:44,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 1332 transitions, 34526 flow, removed 405 selfloop flow, removed 5 redundant places. [2023-01-27 20:38:44,519 INFO L231 Difference]: Finished difference. Result has 302 places, 1026 transitions, 24570 flow [2023-01-27 20:38:44,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=27730, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=937, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=24570, PETRI_PLACES=302, PETRI_TRANSITIONS=1026} [2023-01-27 20:38:44,520 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 283 predicate places. [2023-01-27 20:38:44,520 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 1026 transitions, 24570 flow [2023-01-27 20:38:44,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:44,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:38:44,520 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:38:44,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-27 20:38:44,520 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:38:44,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:38:44,520 INFO L85 PathProgramCache]: Analyzing trace with hash -16554560, now seen corresponding path program 4 times [2023-01-27 20:38:44,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:38:44,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916210419] [2023-01-27 20:38:44,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:38:44,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:38:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:38:44,590 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:38:44,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:38:44,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916210419] [2023-01-27 20:38:44,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916210419] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:38:44,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376418437] [2023-01-27 20:38:44,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:38:44,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:38:44,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:38:44,602 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) [2023-01-27 20:38:44,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-27 20:38:44,703 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:38:44,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:38:44,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:38:44,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:38:44,766 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:38:44,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:38:44,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:38:44,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376418437] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:38:44,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:38:44,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 11 [2023-01-27 20:38:44,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997626053] [2023-01-27 20:38:44,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:38:44,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:38:44,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:38:44,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:38:44,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-01-27 20:38:44,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 224 [2023-01-27 20:38:44,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 1026 transitions, 24570 flow. Second operand has 12 states, 12 states have (on average 95.66666666666667) internal successors, (1148), 12 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:44,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:38:44,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 224 [2023-01-27 20:38:44,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:38:48,398 INFO L130 PetriNetUnfolder]: 5461/10053 cut-off events. [2023-01-27 20:38:48,398 INFO L131 PetriNetUnfolder]: For 342163/342163 co-relation queries the response was YES. [2023-01-27 20:38:48,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100982 conditions, 10053 events. 5461/10053 cut-off events. For 342163/342163 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 76225 event pairs, 510 based on Foata normal form. 132/10185 useless extension candidates. Maximal degree in co-relation 99123. Up to 3241 conditions per place. [2023-01-27 20:38:48,606 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 751 selfloop transitions, 839 changer transitions 1/1591 dead transitions. [2023-01-27 20:38:48,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 1591 transitions, 40750 flow [2023-01-27 20:38:48,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-27 20:38:48,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-27 20:38:48,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2299 transitions. [2023-01-27 20:38:48,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44623447204968947 [2023-01-27 20:38:48,621 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2299 transitions. [2023-01-27 20:38:48,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2299 transitions. [2023-01-27 20:38:48,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:38:48,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2299 transitions. [2023-01-27 20:38:48,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 99.95652173913044) internal successors, (2299), 23 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) [2023-01-27 20:38:48,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 224.0) internal successors, (5376), 24 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:48,626 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 224.0) internal successors, (5376), 24 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:48,626 INFO L175 Difference]: Start difference. First operand has 302 places, 1026 transitions, 24570 flow. Second operand 23 states and 2299 transitions. [2023-01-27 20:38:48,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 1591 transitions, 40750 flow [2023-01-27 20:38:51,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 1591 transitions, 39883 flow, removed 235 selfloop flow, removed 7 redundant places. [2023-01-27 20:38:51,315 INFO L231 Difference]: Finished difference. Result has 327 places, 1330 transitions, 35812 flow [2023-01-27 20:38:51,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=23974, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1024, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=571, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=35812, PETRI_PLACES=327, PETRI_TRANSITIONS=1330} [2023-01-27 20:38:51,316 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 308 predicate places. [2023-01-27 20:38:51,316 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 1330 transitions, 35812 flow [2023-01-27 20:38:51,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 95.66666666666667) internal successors, (1148), 12 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:51,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:38:51,317 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:38:51,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-01-27 20:38:51,521 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 [2023-01-27 20:38:51,521 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:38:51,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:38:51,521 INFO L85 PathProgramCache]: Analyzing trace with hash -862660922, now seen corresponding path program 5 times [2023-01-27 20:38:51,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:38:51,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532203157] [2023-01-27 20:38:51,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:38:51,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:38:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:38:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:38:51,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:38:51,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532203157] [2023-01-27 20:38:51,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532203157] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:38:51,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143961234] [2023-01-27 20:38:51,608 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:38:51,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:38:51,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:38:51,609 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) [2023-01-27 20:38:51,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-27 20:38:51,697 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-27 20:38:51,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:38:51,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:38:51,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:38:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:38:51,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:38:51,808 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:38:51,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143961234] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:38:51,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:38:51,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 11 [2023-01-27 20:38:51,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124031908] [2023-01-27 20:38:51,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:38:51,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:38:51,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:38:51,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:38:51,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-01-27 20:38:51,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 224 [2023-01-27 20:38:51,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 1330 transitions, 35812 flow. Second operand has 12 states, 12 states have (on average 95.83333333333333) internal successors, (1150), 12 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:51,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:38:51,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 224 [2023-01-27 20:38:51,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:38:56,123 INFO L130 PetriNetUnfolder]: 5254/9745 cut-off events. [2023-01-27 20:38:56,123 INFO L131 PetriNetUnfolder]: For 382321/382321 co-relation queries the response was YES. [2023-01-27 20:38:56,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102919 conditions, 9745 events. 5254/9745 cut-off events. For 382321/382321 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 74547 event pairs, 82 based on Foata normal form. 112/9857 useless extension candidates. Maximal degree in co-relation 101016. Up to 2995 conditions per place. [2023-01-27 20:38:56,226 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 1022 selfloop transitions, 663 changer transitions 25/1710 dead transitions. [2023-01-27 20:38:56,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 1710 transitions, 45592 flow [2023-01-27 20:38:56,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-27 20:38:56,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-27 20:38:56,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2381 transitions. [2023-01-27 20:38:56,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44289434523809523 [2023-01-27 20:38:56,238 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2381 transitions. [2023-01-27 20:38:56,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2381 transitions. [2023-01-27 20:38:56,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:38:56,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2381 transitions. [2023-01-27 20:38:56,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 99.20833333333333) internal successors, (2381), 24 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:56,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 224.0) internal successors, (5600), 25 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:56,247 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 224.0) internal successors, (5600), 25 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:56,247 INFO L175 Difference]: Start difference. First operand has 327 places, 1330 transitions, 35812 flow. Second operand 24 states and 2381 transitions. [2023-01-27 20:38:56,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 1710 transitions, 45592 flow [2023-01-27 20:38:59,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 1710 transitions, 44584 flow, removed 413 selfloop flow, removed 5 redundant places. [2023-01-27 20:38:59,262 INFO L231 Difference]: Finished difference. Result has 350 places, 1340 transitions, 37285 flow [2023-01-27 20:38:59,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=34088, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=634, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=37285, PETRI_PLACES=350, PETRI_TRANSITIONS=1340} [2023-01-27 20:38:59,263 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 331 predicate places. [2023-01-27 20:38:59,263 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 1340 transitions, 37285 flow [2023-01-27 20:38:59,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 95.83333333333333) internal successors, (1150), 12 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:59,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:38:59,263 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:38:59,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-27 20:38:59,467 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 [2023-01-27 20:38:59,468 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:38:59,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:38:59,468 INFO L85 PathProgramCache]: Analyzing trace with hash 793791252, now seen corresponding path program 15 times [2023-01-27 20:38:59,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:38:59,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994393782] [2023-01-27 20:38:59,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:38:59,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:38:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:38:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:38:59,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:38:59,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994393782] [2023-01-27 20:38:59,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994393782] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:38:59,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558928586] [2023-01-27 20:38:59,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:38:59,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:38:59,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:38:59,519 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) [2023-01-27 20:38:59,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-27 20:38:59,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-27 20:38:59,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:38:59,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-27 20:38:59,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:38:59,662 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:38:59,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:38:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:38:59,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558928586] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:38:59,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:38:59,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-01-27 20:38:59,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162651568] [2023-01-27 20:38:59,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:38:59,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:38:59,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:38:59,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:38:59,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:38:59,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 224 [2023-01-27 20:38:59,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 1340 transitions, 37285 flow. Second operand has 11 states, 11 states have (on average 99.54545454545455) internal successors, (1095), 11 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:38:59,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:38:59,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 224 [2023-01-27 20:38:59,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:39:05,347 INFO L130 PetriNetUnfolder]: 7290/13509 cut-off events. [2023-01-27 20:39:05,347 INFO L131 PetriNetUnfolder]: For 595491/595491 co-relation queries the response was YES. [2023-01-27 20:39:05,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147002 conditions, 13509 events. 7290/13509 cut-off events. For 595491/595491 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 109707 event pairs, 317 based on Foata normal form. 410/13919 useless extension candidates. Maximal degree in co-relation 144872. Up to 5039 conditions per place. [2023-01-27 20:39:05,597 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 1637 selfloop transitions, 430 changer transitions 24/2091 dead transitions. [2023-01-27 20:39:05,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 2091 transitions, 63752 flow [2023-01-27 20:39:05,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:39:05,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:39:05,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 739 transitions. [2023-01-27 20:39:05,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47130102040816324 [2023-01-27 20:39:05,599 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 739 transitions. [2023-01-27 20:39:05,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 739 transitions. [2023-01-27 20:39:05,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:39:05,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 739 transitions. [2023-01-27 20:39:05,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 105.57142857142857) internal successors, (739), 7 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:39:05,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 224.0) internal successors, (1792), 8 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:39:05,600 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 224.0) internal successors, (1792), 8 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:39:05,601 INFO L175 Difference]: Start difference. First operand has 350 places, 1340 transitions, 37285 flow. Second operand 7 states and 739 transitions. [2023-01-27 20:39:05,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 2091 transitions, 63752 flow [2023-01-27 20:39:11,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 2091 transitions, 60426 flow, removed 1489 selfloop flow, removed 8 redundant places. [2023-01-27 20:39:11,741 INFO L231 Difference]: Finished difference. Result has 346 places, 1387 transitions, 38525 flow [2023-01-27 20:39:11,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=32969, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=945, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38525, PETRI_PLACES=346, PETRI_TRANSITIONS=1387} [2023-01-27 20:39:11,742 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 327 predicate places. [2023-01-27 20:39:11,742 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 1387 transitions, 38525 flow [2023-01-27 20:39:11,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 99.54545454545455) internal successors, (1095), 11 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:39:11,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:39:11,743 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:39:11,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-27 20:39:11,947 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 [2023-01-27 20:39:11,947 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:39:11,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:39:11,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1483838864, now seen corresponding path program 16 times [2023-01-27 20:39:11,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:39:11,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998733686] [2023-01-27 20:39:11,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:39:11,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:39:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:39:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:39:12,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:39:12,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998733686] [2023-01-27 20:39:12,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998733686] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:39:12,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881951948] [2023-01-27 20:39:12,200 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:39:12,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:39:12,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:39:12,201 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) [2023-01-27 20:39:12,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-27 20:39:12,465 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:39:12,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:39:12,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 20:39:12,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:39:12,768 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:39:12,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:39:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:39:13,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881951948] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:39:13,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:39:13,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 19 [2023-01-27 20:39:13,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838959448] [2023-01-27 20:39:13,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:39:13,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-27 20:39:13,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:39:13,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-27 20:39:13,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2023-01-27 20:39:13,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 224 [2023-01-27 20:39:13,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 1387 transitions, 38525 flow. Second operand has 21 states, 21 states have (on average 85.52380952380952) internal successors, (1796), 21 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:39:13,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:39:13,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 224 [2023-01-27 20:39:13,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:39:20,625 INFO L130 PetriNetUnfolder]: 7969/14836 cut-off events. [2023-01-27 20:39:20,625 INFO L131 PetriNetUnfolder]: For 579114/579114 co-relation queries the response was YES. [2023-01-27 20:39:20,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158802 conditions, 14836 events. 7969/14836 cut-off events. For 579114/579114 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 122718 event pairs, 744 based on Foata normal form. 20/14856 useless extension candidates. Maximal degree in co-relation 156644. Up to 13653 conditions per place. [2023-01-27 20:39:20,789 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 1501 selfloop transitions, 165 changer transitions 19/1685 dead transitions. [2023-01-27 20:39:20,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 1685 transitions, 49620 flow [2023-01-27 20:39:20,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-27 20:39:20,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-27 20:39:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1625 transitions. [2023-01-27 20:39:20,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40302579365079366 [2023-01-27 20:39:20,791 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1625 transitions. [2023-01-27 20:39:20,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1625 transitions. [2023-01-27 20:39:20,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:39:20,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1625 transitions. [2023-01-27 20:39:20,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 90.27777777777777) internal successors, (1625), 18 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:39:20,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 224.0) internal successors, (4256), 19 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:39:20,795 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 224.0) internal successors, (4256), 19 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:39:20,795 INFO L175 Difference]: Start difference. First operand has 346 places, 1387 transitions, 38525 flow. Second operand 18 states and 1625 transitions. [2023-01-27 20:39:20,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 1685 transitions, 49620 flow [2023-01-27 20:39:26,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 1685 transitions, 48866 flow, removed 148 selfloop flow, removed 4 redundant places. [2023-01-27 20:39:26,433 INFO L231 Difference]: Finished difference. Result has 368 places, 1525 transitions, 42682 flow [2023-01-27 20:39:26,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=37889, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=42682, PETRI_PLACES=368, PETRI_TRANSITIONS=1525} [2023-01-27 20:39:26,434 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 349 predicate places. [2023-01-27 20:39:26,434 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 1525 transitions, 42682 flow [2023-01-27 20:39:26,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 85.52380952380952) internal successors, (1796), 21 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:39:26,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:39:26,435 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:39:26,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-01-27 20:39:26,639 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 [2023-01-27 20:39:26,639 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:39:26,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:39:26,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1811320966, now seen corresponding path program 17 times [2023-01-27 20:39:26,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:39:26,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908699066] [2023-01-27 20:39:26,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:39:26,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:39:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:39:26,933 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:39:26,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:39:26,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908699066] [2023-01-27 20:39:26,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908699066] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:39:26,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214674497] [2023-01-27 20:39:26,934 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:39:26,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:39:26,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:39:26,937 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) [2023-01-27 20:39:26,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-01-27 20:39:27,131 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-01-27 20:39:27,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:39:27,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 20:39:27,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:39:27,452 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:39:27,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:39:27,838 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:39:27,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214674497] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:39:27,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:39:27,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-01-27 20:39:27,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101962675] [2023-01-27 20:39:27,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:39:27,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-27 20:39:27,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:39:27,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-27 20:39:27,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2023-01-27 20:39:27,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 224 [2023-01-27 20:39:27,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 1525 transitions, 42682 flow. Second operand has 22 states, 22 states have (on average 85.31818181818181) internal successors, (1877), 22 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:39:27,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:39:27,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 224 [2023-01-27 20:39:27,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:39:37,149 INFO L130 PetriNetUnfolder]: 8570/16033 cut-off events. [2023-01-27 20:39:37,149 INFO L131 PetriNetUnfolder]: For 644586/644586 co-relation queries the response was YES. [2023-01-27 20:39:37,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173939 conditions, 16033 events. 8570/16033 cut-off events. For 644586/644586 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 135504 event pairs, 692 based on Foata normal form. 11/16044 useless extension candidates. Maximal degree in co-relation 169324. Up to 10417 conditions per place. [2023-01-27 20:39:37,328 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 858 selfloop transitions, 976 changer transitions 5/1839 dead transitions. [2023-01-27 20:39:37,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 1839 transitions, 54554 flow [2023-01-27 20:39:37,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-01-27 20:39:37,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-01-27 20:39:37,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2235 transitions. [2023-01-27 20:39:37,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3991071428571429 [2023-01-27 20:39:37,333 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2235 transitions. [2023-01-27 20:39:37,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2235 transitions. [2023-01-27 20:39:37,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:39:37,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2235 transitions. [2023-01-27 20:39:37,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 89.4) internal successors, (2235), 25 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:39:37,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 224.0) internal successors, (5824), 26 states have internal predecessors, (5824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:39:37,338 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 224.0) internal successors, (5824), 26 states have internal predecessors, (5824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:39:37,338 INFO L175 Difference]: Start difference. First operand has 368 places, 1525 transitions, 42682 flow. Second operand 25 states and 2235 transitions. [2023-01-27 20:39:37,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 1839 transitions, 54554 flow [2023-01-27 20:39:44,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 1839 transitions, 53784 flow, removed 377 selfloop flow, removed 5 redundant places. [2023-01-27 20:39:44,259 INFO L231 Difference]: Finished difference. Result has 399 places, 1691 transitions, 50232 flow [2023-01-27 20:39:44,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=41912, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=824, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=50232, PETRI_PLACES=399, PETRI_TRANSITIONS=1691} [2023-01-27 20:39:44,261 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 380 predicate places. [2023-01-27 20:39:44,261 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 1691 transitions, 50232 flow [2023-01-27 20:39:44,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 85.31818181818181) internal successors, (1877), 22 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:39:44,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:39:44,262 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:39:44,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-01-27 20:39:44,468 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 [2023-01-27 20:39:44,468 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:39:44,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:39:44,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1330010618, now seen corresponding path program 18 times [2023-01-27 20:39:44,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:39:44,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160212794] [2023-01-27 20:39:44,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:39:44,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:39:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:39:44,709 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:39:44,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:39:44,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160212794] [2023-01-27 20:39:44,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160212794] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:39:44,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307628220] [2023-01-27 20:39:44,709 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:39:44,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:39:44,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:39:44,710 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) [2023-01-27 20:39:44,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-01-27 20:39:44,845 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-01-27 20:39:44,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:39:44,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-27 20:39:44,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:39:45,144 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:39:45,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:39:45,539 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:39:45,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307628220] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:39:45,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:39:45,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-01-27 20:39:45,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018066370] [2023-01-27 20:39:45,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:39:45,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-27 20:39:45,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:39:45,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-27 20:39:45,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2023-01-27 20:39:45,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 224 [2023-01-27 20:39:45,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 1691 transitions, 50232 flow. Second operand has 22 states, 22 states have (on average 85.31818181818181) internal successors, (1877), 22 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:39:45,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:39:45,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 224 [2023-01-27 20:39:45,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:39:49,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-27 20:39:52,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 20:40:06,575 INFO L130 PetriNetUnfolder]: 9586/17996 cut-off events. [2023-01-27 20:40:06,575 INFO L131 PetriNetUnfolder]: For 813158/813158 co-relation queries the response was YES. [2023-01-27 20:40:06,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204934 conditions, 17996 events. 9586/17996 cut-off events. For 813158/813158 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 154293 event pairs, 800 based on Foata normal form. 34/18030 useless extension candidates. Maximal degree in co-relation 199545. Up to 11316 conditions per place. [2023-01-27 20:40:06,782 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 928 selfloop transitions, 1142 changer transitions 27/2097 dead transitions. [2023-01-27 20:40:06,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 2097 transitions, 66233 flow [2023-01-27 20:40:06,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-01-27 20:40:06,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-01-27 20:40:06,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2515 transitions. [2023-01-27 20:40:06,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40098852040816324 [2023-01-27 20:40:06,785 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2515 transitions. [2023-01-27 20:40:06,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2515 transitions. [2023-01-27 20:40:06,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:40:06,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2515 transitions. [2023-01-27 20:40:06,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 89.82142857142857) internal successors, (2515), 28 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:40:06,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 224.0) internal successors, (6496), 29 states have internal predecessors, (6496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:40:06,790 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 224.0) internal successors, (6496), 29 states have internal predecessors, (6496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:40:06,790 INFO L175 Difference]: Start difference. First operand has 399 places, 1691 transitions, 50232 flow. Second operand 28 states and 2515 transitions. [2023-01-27 20:40:06,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 2097 transitions, 66233 flow [2023-01-27 20:40:15,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 2097 transitions, 64570 flow, removed 818 selfloop flow, removed 7 redundant places. [2023-01-27 20:40:15,719 INFO L231 Difference]: Finished difference. Result has 426 places, 1917 transitions, 60476 flow [2023-01-27 20:40:15,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=49009, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=952, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=713, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=60476, PETRI_PLACES=426, PETRI_TRANSITIONS=1917} [2023-01-27 20:40:15,721 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 407 predicate places. [2023-01-27 20:40:15,721 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 1917 transitions, 60476 flow [2023-01-27 20:40:15,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 85.31818181818181) internal successors, (1877), 22 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:40:15,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:40:15,721 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:40:15,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-01-27 20:40:15,926 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 [2023-01-27 20:40:15,926 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:40:15,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:40:15,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1559351968, now seen corresponding path program 19 times [2023-01-27 20:40:15,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:40:15,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141990478] [2023-01-27 20:40:15,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:40:15,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:40:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:40:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:40:16,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:40:16,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141990478] [2023-01-27 20:40:16,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141990478] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:40:16,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414358262] [2023-01-27 20:40:16,184 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 20:40:16,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:40:16,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:40:16,189 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) [2023-01-27 20:40:16,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-01-27 20:40:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:40:16,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 20:40:16,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:40:16,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:40:16,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:40:17,148 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:40:17,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414358262] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:40:17,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:40:17,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-01-27 20:40:17,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84280150] [2023-01-27 20:40:17,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:40:17,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-27 20:40:17,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:40:17,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-27 20:40:17,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2023-01-27 20:40:17,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 224 [2023-01-27 20:40:17,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 1917 transitions, 60476 flow. Second operand has 22 states, 22 states have (on average 85.31818181818181) internal successors, (1877), 22 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:40:17,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:40:17,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 224 [2023-01-27 20:40:17,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:40:23,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 20:40:31,984 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 [] [2023-01-27 20:40:42,668 INFO L130 PetriNetUnfolder]: 11139/20978 cut-off events. [2023-01-27 20:40:42,668 INFO L131 PetriNetUnfolder]: For 1044143/1044143 co-relation queries the response was YES. [2023-01-27 20:40:42,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249553 conditions, 20978 events. 11139/20978 cut-off events. For 1044143/1044143 co-relation queries the response was YES. Maximal size of possible extension queue 1211. Compared 185084 event pairs, 868 based on Foata normal form. 12/20990 useless extension candidates. Maximal degree in co-relation 243916. Up to 12822 conditions per place. [2023-01-27 20:40:42,958 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 1078 selfloop transitions, 1470 changer transitions 22/2570 dead transitions. [2023-01-27 20:40:42,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 2570 transitions, 85582 flow [2023-01-27 20:40:42,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-01-27 20:40:42,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-01-27 20:40:42,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3024 transitions. [2023-01-27 20:40:42,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39705882352941174 [2023-01-27 20:40:42,961 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3024 transitions. [2023-01-27 20:40:42,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3024 transitions. [2023-01-27 20:40:42,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:40:42,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3024 transitions. [2023-01-27 20:40:42,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 88.94117647058823) internal successors, (3024), 34 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:40:42,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 224.0) internal successors, (7840), 35 states have internal predecessors, (7840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:40:42,967 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 224.0) internal successors, (7840), 35 states have internal predecessors, (7840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:40:42,967 INFO L175 Difference]: Start difference. First operand has 426 places, 1917 transitions, 60476 flow. Second operand 34 states and 3024 transitions. [2023-01-27 20:40:42,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 2570 transitions, 85582 flow [2023-01-27 20:40:56,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 2570 transitions, 83517 flow, removed 1012 selfloop flow, removed 9 redundant places. [2023-01-27 20:40:56,232 INFO L231 Difference]: Finished difference. Result has 464 places, 2345 transitions, 80450 flow [2023-01-27 20:40:56,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=58595, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1917, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1085, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=740, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=80450, PETRI_PLACES=464, PETRI_TRANSITIONS=2345} [2023-01-27 20:40:56,234 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 445 predicate places. [2023-01-27 20:40:56,234 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 2345 transitions, 80450 flow [2023-01-27 20:40:56,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 85.31818181818181) internal successors, (1877), 22 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:40:56,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:40:56,234 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:40:56,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-01-27 20:40:56,438 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 [2023-01-27 20:40:56,439 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:40:56,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:40:56,439 INFO L85 PathProgramCache]: Analyzing trace with hash -885880736, now seen corresponding path program 20 times [2023-01-27 20:40:56,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:40:56,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841338899] [2023-01-27 20:40:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:40:56,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:40:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:40:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:40:56,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:40:56,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841338899] [2023-01-27 20:40:56,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841338899] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:40:56,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474261811] [2023-01-27 20:40:56,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:40:56,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:40:56,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:40:56,653 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) [2023-01-27 20:40:56,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-01-27 20:40:56,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:40:56,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:40:56,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-27 20:40:56,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:40:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:40:57,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:41:03,777 WARN L222 SmtUtils]: Spent 6.18s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 20:41:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:41:04,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474261811] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:41:04,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:41:04,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 19 [2023-01-27 20:41:04,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811910588] [2023-01-27 20:41:04,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:41:04,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-27 20:41:04,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:41:04,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-27 20:41:04,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2023-01-27 20:41:04,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 224 [2023-01-27 20:41:04,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 2345 transitions, 80450 flow. Second operand has 21 states, 21 states have (on average 85.42857142857143) internal successors, (1794), 21 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) [2023-01-27 20:41:04,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:41:04,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 224 [2023-01-27 20:41:04,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:42:04,682 WARN L222 SmtUtils]: Spent 57.46s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 20:43:11,908 WARN L222 SmtUtils]: Spent 1.08m on a formula simplification. DAG size of input: 50 DAG size of output: 40 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 20:43:41,433 WARN L222 SmtUtils]: Spent 24.17s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 20:43:57,750 WARN L222 SmtUtils]: Spent 16.23s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 20:44:23,339 WARN L222 SmtUtils]: Spent 24.25s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 20:44:26,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-27 20:44:28,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-27 20:44:30,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-27 20:44:32,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2023-01-27 20:44:34,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2023-01-27 20:44:50,862 INFO L130 PetriNetUnfolder]: 12589/23851 cut-off events. [2023-01-27 20:44:50,862 INFO L131 PetriNetUnfolder]: For 1320849/1320849 co-relation queries the response was YES. [2023-01-27 20:44:51,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296166 conditions, 23851 events. 12589/23851 cut-off events. For 1320849/1320849 co-relation queries the response was YES. Maximal size of possible extension queue 1250. Compared 211599 event pairs, 1274 based on Foata normal form. 16/23867 useless extension candidates. Maximal degree in co-relation 294762. Up to 20840 conditions per place. [2023-01-27 20:44:51,395 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 2439 selfloop transitions, 441 changer transitions 34/2914 dead transitions. [2023-01-27 20:44:51,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 2914 transitions, 104252 flow [2023-01-27 20:44:51,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-01-27 20:44:51,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-01-27 20:44:51,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2771 transitions. [2023-01-27 20:44:51,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3990495391705069 [2023-01-27 20:44:51,398 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2771 transitions. [2023-01-27 20:44:51,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2771 transitions. [2023-01-27 20:44:51,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:44:51,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2771 transitions. [2023-01-27 20:44:51,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 89.38709677419355) internal successors, (2771), 31 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:44:51,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 224.0) internal successors, (7168), 32 states have internal predecessors, (7168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:44:51,417 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 224.0) internal successors, (7168), 32 states have internal predecessors, (7168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:44:51,417 INFO L175 Difference]: Start difference. First operand has 464 places, 2345 transitions, 80450 flow. Second operand 31 states and 2771 transitions. [2023-01-27 20:44:51,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 2914 transitions, 104252 flow [2023-01-27 20:45:10,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 2914 transitions, 101658 flow, removed 1269 selfloop flow, removed 14 redundant places. [2023-01-27 20:45:10,073 INFO L231 Difference]: Finished difference. Result has 490 places, 2651 transitions, 90709 flow [2023-01-27 20:45:10,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=77906, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2039, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=90709, PETRI_PLACES=490, PETRI_TRANSITIONS=2651} [2023-01-27 20:45:10,076 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 471 predicate places. [2023-01-27 20:45:10,077 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 2651 transitions, 90709 flow [2023-01-27 20:45:10,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 85.42857142857143) internal successors, (1794), 21 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) [2023-01-27 20:45:10,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:45:10,077 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:45:10,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-01-27 20:45:10,284 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 [2023-01-27 20:45:10,284 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:45:10,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:45:10,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1960753912, now seen corresponding path program 21 times [2023-01-27 20:45:10,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:45:10,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087502518] [2023-01-27 20:45:10,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:45:10,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:45:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:45:10,518 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:45:10,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:45:10,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087502518] [2023-01-27 20:45:10,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087502518] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:45:10,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429700685] [2023-01-27 20:45:10,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:45:10,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:45:10,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:45:10,520 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) [2023-01-27 20:45:10,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-01-27 20:45:10,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-27 20:45:10,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:45:10,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 20:45:10,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:45:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:45:11,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:45:13,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:45:13,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429700685] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:45:13,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:45:13,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 19 [2023-01-27 20:45:13,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660893041] [2023-01-27 20:45:13,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:45:13,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-27 20:45:13,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:45:13,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-27 20:45:13,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2023-01-27 20:45:13,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 224 [2023-01-27 20:45:13,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 2651 transitions, 90709 flow. Second operand has 21 states, 21 states have (on average 85.42857142857143) internal successors, (1794), 21 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) [2023-01-27 20:45:13,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:45:13,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 224 [2023-01-27 20:45:13,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:46:01,798 WARN L222 SmtUtils]: Spent 46.42s on a formula simplification. DAG size of input: 56 DAG size of output: 37 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 20:46:04,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-27 20:46:22,683 WARN L222 SmtUtils]: Spent 16.15s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 20:46:41,046 WARN L222 SmtUtils]: Spent 12.14s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 20:46:54,040 INFO L130 PetriNetUnfolder]: 12994/24600 cut-off events. [2023-01-27 20:46:54,040 INFO L131 PetriNetUnfolder]: For 1384469/1384469 co-relation queries the response was YES. [2023-01-27 20:46:54,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306309 conditions, 24600 events. 12994/24600 cut-off events. For 1384469/1384469 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 219209 event pairs, 1132 based on Foata normal form. 9/24609 useless extension candidates. Maximal degree in co-relation 302551. Up to 16689 conditions per place. [2023-01-27 20:46:54,471 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 1349 selfloop transitions, 1523 changer transitions 19/2891 dead transitions. [2023-01-27 20:46:54,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 2891 transitions, 103394 flow [2023-01-27 20:46:54,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-27 20:46:54,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-27 20:46:54,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2129 transitions. [2023-01-27 20:46:54,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39601934523809523 [2023-01-27 20:46:54,473 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2129 transitions. [2023-01-27 20:46:54,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2129 transitions. [2023-01-27 20:46:54,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:46:54,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2129 transitions. [2023-01-27 20:46:54,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 88.70833333333333) internal successors, (2129), 24 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:46:54,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 224.0) internal successors, (5600), 25 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:46:54,478 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 224.0) internal successors, (5600), 25 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:46:54,478 INFO L175 Difference]: Start difference. First operand has 490 places, 2651 transitions, 90709 flow. Second operand 24 states and 2129 transitions. [2023-01-27 20:46:54,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 2891 transitions, 103394 flow [2023-01-27 20:47:14,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 2891 transitions, 101707 flow, removed 826 selfloop flow, removed 11 redundant places. [2023-01-27 20:47:14,312 INFO L231 Difference]: Finished difference. Result has 512 places, 2776 transitions, 98886 flow [2023-01-27 20:47:14,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=89022, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1405, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=98886, PETRI_PLACES=512, PETRI_TRANSITIONS=2776} [2023-01-27 20:47:14,314 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 493 predicate places. [2023-01-27 20:47:14,314 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 2776 transitions, 98886 flow [2023-01-27 20:47:14,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 85.42857142857143) internal successors, (1794), 21 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) [2023-01-27 20:47:14,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:47:14,314 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:47:14,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-01-27 20:47:14,519 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 [2023-01-27 20:47:14,519 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:47:14,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:47:14,519 INFO L85 PathProgramCache]: Analyzing trace with hash -155023124, now seen corresponding path program 22 times [2023-01-27 20:47:14,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:47:14,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405616114] [2023-01-27 20:47:14,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:47:14,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:47:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:47:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:47:14,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:47:14,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405616114] [2023-01-27 20:47:14,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405616114] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:47:14,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722643791] [2023-01-27 20:47:14,732 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:47:14,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:47:14,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:47:14,741 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) [2023-01-27 20:47:14,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-01-27 20:47:14,894 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:47:14,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:47:14,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 20:47:14,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:47:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:47:15,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:47:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:47:15,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722643791] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:47:15,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:47:15,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-01-27 20:47:15,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10571993] [2023-01-27 20:47:15,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:47:15,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-27 20:47:15,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:47:15,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-27 20:47:15,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2023-01-27 20:47:15,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 224 [2023-01-27 20:47:15,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 2776 transitions, 98886 flow. Second operand has 22 states, 22 states have (on average 85.27272727272727) internal successors, (1876), 22 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:47:15,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:47:15,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 224 [2023-01-27 20:47:15,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:47:24,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-27 20:47:29,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-27 20:47:51,353 INFO L130 PetriNetUnfolder]: 13536/25619 cut-off events. [2023-01-27 20:47:51,353 INFO L131 PetriNetUnfolder]: For 1533981/1533981 co-relation queries the response was YES. [2023-01-27 20:47:51,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326144 conditions, 25619 events. 13536/25619 cut-off events. For 1533981/1533981 co-relation queries the response was YES. Maximal size of possible extension queue 1358. Compared 230480 event pairs, 1288 based on Foata normal form. 13/25632 useless extension candidates. Maximal degree in co-relation 324533. Up to 12988 conditions per place. [2023-01-27 20:47:51,835 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 1587 selfloop transitions, 1442 changer transitions 23/3052 dead transitions. [2023-01-27 20:47:51,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 3052 transitions, 113712 flow [2023-01-27 20:47:51,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-27 20:47:51,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-27 20:47:51,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2035 transitions. [2023-01-27 20:47:51,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39499223602484473 [2023-01-27 20:47:51,839 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2035 transitions. [2023-01-27 20:47:51,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2035 transitions. [2023-01-27 20:47:51,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:47:51,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2035 transitions. [2023-01-27 20:47:51,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 88.47826086956522) internal successors, (2035), 23 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:47:51,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 224.0) internal successors, (5376), 24 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:47:51,845 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 224.0) internal successors, (5376), 24 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:47:51,845 INFO L175 Difference]: Start difference. First operand has 512 places, 2776 transitions, 98886 flow. Second operand 23 states and 2035 transitions. [2023-01-27 20:47:51,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 3052 transitions, 113712 flow [2023-01-27 20:48:14,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 3052 transitions, 112513 flow, removed 593 selfloop flow, removed 4 redundant places. [2023-01-27 20:48:15,060 INFO L231 Difference]: Finished difference. Result has 541 places, 2934 transitions, 107591 flow [2023-01-27 20:48:15,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=97687, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=107591, PETRI_PLACES=541, PETRI_TRANSITIONS=2934} [2023-01-27 20:48:15,063 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 522 predicate places. [2023-01-27 20:48:15,063 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 2934 transitions, 107591 flow [2023-01-27 20:48:15,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 85.27272727272727) internal successors, (1876), 22 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:48:15,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:48:15,063 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:48:15,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-01-27 20:48:15,268 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 [2023-01-27 20:48:15,268 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:48:15,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:48:15,268 INFO L85 PathProgramCache]: Analyzing trace with hash -641647828, now seen corresponding path program 23 times [2023-01-27 20:48:15,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:48:15,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001766646] [2023-01-27 20:48:15,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:48:15,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:48:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:48:15,558 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:48:15,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:48:15,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001766646] [2023-01-27 20:48:15,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001766646] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:48:15,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807360636] [2023-01-27 20:48:15,558 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:48:15,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:48:15,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:48:15,560 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) [2023-01-27 20:48:15,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-01-27 20:48:15,759 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-27 20:48:15,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:48:15,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 20:48:15,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:48:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:48:16,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:48:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:48:16,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807360636] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:48:16,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:48:16,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-01-27 20:48:16,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723643873] [2023-01-27 20:48:16,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:48:16,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-27 20:48:16,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:48:16,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-27 20:48:16,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2023-01-27 20:48:16,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 224 [2023-01-27 20:48:16,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 2934 transitions, 107591 flow. Second operand has 21 states, 21 states have (on average 85.38095238095238) internal successors, (1793), 21 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:48:16,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:48:16,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 224 [2023-01-27 20:48:16,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:48:47,157 INFO L130 PetriNetUnfolder]: 14226/26932 cut-off events. [2023-01-27 20:48:47,157 INFO L131 PetriNetUnfolder]: For 1683804/1683804 co-relation queries the response was YES. [2023-01-27 20:48:47,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349264 conditions, 26932 events. 14226/26932 cut-off events. For 1683804/1683804 co-relation queries the response was YES. Maximal size of possible extension queue 1436. Compared 244347 event pairs, 1338 based on Foata normal form. 8/26940 useless extension candidates. Maximal degree in co-relation 347839. Up to 13580 conditions per place. [2023-01-27 20:48:47,616 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 1697 selfloop transitions, 1536 changer transitions 48/3281 dead transitions. [2023-01-27 20:48:47,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 3281 transitions, 125348 flow [2023-01-27 20:48:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-27 20:48:47,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-27 20:48:47,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2134 transitions. [2023-01-27 20:48:47,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39694940476190477 [2023-01-27 20:48:47,619 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2134 transitions. [2023-01-27 20:48:47,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2134 transitions. [2023-01-27 20:48:47,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:48:47,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2134 transitions. [2023-01-27 20:48:47,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 88.91666666666667) internal successors, (2134), 24 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:48:47,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 224.0) internal successors, (5600), 25 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:48:47,623 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 224.0) internal successors, (5600), 25 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:48:47,624 INFO L175 Difference]: Start difference. First operand has 541 places, 2934 transitions, 107591 flow. Second operand 24 states and 2134 transitions. [2023-01-27 20:48:47,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 3281 transitions, 125348 flow [2023-01-27 20:49:14,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 3281 transitions, 123199 flow, removed 1065 selfloop flow, removed 6 redundant places. [2023-01-27 20:49:14,915 INFO L231 Difference]: Finished difference. Result has 569 places, 3138 transitions, 120249 flow [2023-01-27 20:49:14,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=105442, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2934, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1357, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=120249, PETRI_PLACES=569, PETRI_TRANSITIONS=3138} [2023-01-27 20:49:14,918 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 550 predicate places. [2023-01-27 20:49:14,918 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 3138 transitions, 120249 flow [2023-01-27 20:49:14,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 85.38095238095238) internal successors, (1793), 21 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:14,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:49:14,918 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:49:14,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-01-27 20:49:15,123 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 [2023-01-27 20:49:15,123 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:49:15,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:49:15,123 INFO L85 PathProgramCache]: Analyzing trace with hash -428826602, now seen corresponding path program 24 times [2023-01-27 20:49:15,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:49:15,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544833759] [2023-01-27 20:49:15,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:49:15,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:49:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:49:15,443 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:49:15,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:49:15,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544833759] [2023-01-27 20:49:15,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544833759] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:49:15,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398742239] [2023-01-27 20:49:15,443 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:49:15,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:49:15,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:49:15,445 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) [2023-01-27 20:49:15,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-01-27 20:49:15,648 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-01-27 20:49:15,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:49:15,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 20:49:15,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:49:15,918 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:49:15,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:49:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:49:16,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398742239] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:49:16,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:49:16,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 21 [2023-01-27 20:49:16,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511321133] [2023-01-27 20:49:16,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:49:16,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-27 20:49:16,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:49:16,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-27 20:49:16,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2023-01-27 20:49:16,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 224 [2023-01-27 20:49:16,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 3138 transitions, 120249 flow. Second operand has 23 states, 23 states have (on average 85.26086956521739) internal successors, (1961), 23 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:16,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:49:16,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 224 [2023-01-27 20:49:16,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:49:56,722 INFO L130 PetriNetUnfolder]: 18563/34860 cut-off events. [2023-01-27 20:49:56,722 INFO L131 PetriNetUnfolder]: For 2404084/2404084 co-relation queries the response was YES. [2023-01-27 20:49:57,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482148 conditions, 34860 events. 18563/34860 cut-off events. For 2404084/2404084 co-relation queries the response was YES. Maximal size of possible extension queue 1749. Compared 325543 event pairs, 1391 based on Foata normal form. 10/34870 useless extension candidates. Maximal degree in co-relation 478846. Up to 18893 conditions per place. [2023-01-27 20:49:57,907 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 2005 selfloop transitions, 2362 changer transitions 28/4395 dead transitions. [2023-01-27 20:49:57,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 4395 transitions, 179520 flow [2023-01-27 20:49:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-01-27 20:49:57,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-01-27 20:49:57,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2957 transitions. [2023-01-27 20:49:57,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40002705627705626 [2023-01-27 20:49:57,923 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2957 transitions. [2023-01-27 20:49:57,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2957 transitions. [2023-01-27 20:49:57,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:49:57,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2957 transitions. [2023-01-27 20:49:57,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 89.60606060606061) internal successors, (2957), 33 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:57,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 224.0) internal successors, (7616), 34 states have internal predecessors, (7616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:57,932 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 224.0) internal successors, (7616), 34 states have internal predecessors, (7616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:57,932 INFO L175 Difference]: Start difference. First operand has 569 places, 3138 transitions, 120249 flow. Second operand 33 states and 2957 transitions. [2023-01-27 20:49:57,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 4395 transitions, 179520 flow [2023-01-27 20:50:48,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 4395 transitions, 177261 flow, removed 1125 selfloop flow, removed 3 redundant places. [2023-01-27 20:50:48,882 INFO L231 Difference]: Finished difference. Result has 610 places, 4006 transitions, 169792 flow [2023-01-27 20:50:48,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=118410, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1676, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=169792, PETRI_PLACES=610, PETRI_TRANSITIONS=4006} [2023-01-27 20:50:48,885 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 591 predicate places. [2023-01-27 20:50:48,885 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 4006 transitions, 169792 flow [2023-01-27 20:50:48,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 85.26086956521739) internal successors, (1961), 23 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:48,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:50:48,885 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:50:48,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-01-27 20:50:49,090 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 [2023-01-27 20:50:49,090 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:50:49,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:50:49,091 INFO L85 PathProgramCache]: Analyzing trace with hash -750093574, now seen corresponding path program 25 times [2023-01-27 20:50:49,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:50:49,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414541986] [2023-01-27 20:50:49,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:50:49,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:50:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:50:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:50:49,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:50:49,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414541986] [2023-01-27 20:50:49,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414541986] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:50:49,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18961550] [2023-01-27 20:50:49,370 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 20:50:49,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:50:49,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:50:49,371 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) [2023-01-27 20:50:49,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-01-27 20:50:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:50:49,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-27 20:50:49,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:50:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:50:50,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:50:50,396 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:50:50,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18961550] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:50:50,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:50:50,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-01-27 20:50:50,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058244071] [2023-01-27 20:50:50,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:50:50,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-27 20:50:50,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:50:50,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-27 20:50:50,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2023-01-27 20:50:50,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 224 [2023-01-27 20:50:50,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 4006 transitions, 169792 flow. Second operand has 21 states, 21 states have (on average 85.38095238095238) internal successors, (1793), 21 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:50,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:50:50,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 224 [2023-01-27 20:50:50,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-01-27 20:51:13,796 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 [2023-01-27 20:51:13,796 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 20:51:13,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-01-27 20:51:13,892 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 20:51:13,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-01-27 20:51:14,097 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 [2023-01-27 20:51:14,097 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 83/224 universal loopers) in iteration 34,while PetriNetUnfolder was constructing finite prefix that currently has 173220 conditions, 12700 events (7219/12699 cut-off events. For 902586/902586 co-relation queries the response was YES. Maximal size of possible extension queue 1950. Compared 114554 event pairs, 395 based on Foata normal form. 0/14643 useless extension candidates. Maximal degree in co-relation 173006. Up to 6449 conditions per place.). [2023-01-27 20:51:14,098 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 20:51:14,098 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 20:51:14,099 INFO L445 BasicCegarLoop]: Path program histogram: [25, 5, 2, 1, 1] [2023-01-27 20:51:14,103 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 20:51:14,103 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 20:51:14,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 08:51:14 BasicIcfg [2023-01-27 20:51:14,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 20:51:14,105 INFO L158 Benchmark]: Toolchain (without parser) took 856356.80ms. Allocated memory was 367.0MB in the beginning and 7.4GB in the end (delta: 7.1GB). Free memory was 329.2MB in the beginning and 6.5GB in the end (delta: -6.2GB). Peak memory consumption was 4.6GB. Max. memory is 16.0GB. [2023-01-27 20:51:14,108 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 367.0MB. Free memory is still 316.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 20:51:14,109 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.33ms. Allocated memory is still 367.0MB. Free memory was 328.8MB in the beginning and 318.1MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-27 20:51:14,109 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.11ms. Allocated memory is still 367.0MB. Free memory was 318.1MB in the beginning and 316.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:51:14,109 INFO L158 Benchmark]: Boogie Preprocessor took 16.88ms. Allocated memory is still 367.0MB. Free memory was 316.4MB in the beginning and 315.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 20:51:14,109 INFO L158 Benchmark]: RCFGBuilder took 314.28ms. Allocated memory is still 367.0MB. Free memory was 315.1MB in the beginning and 301.1MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-27 20:51:14,110 INFO L158 Benchmark]: TraceAbstraction took 855812.84ms. Allocated memory was 367.0MB in the beginning and 7.4GB in the end (delta: 7.1GB). Free memory was 300.5MB in the beginning and 6.5GB in the end (delta: -6.2GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. [2023-01-27 20:51:14,111 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 367.0MB. Free memory is still 316.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 185.33ms. Allocated memory is still 367.0MB. Free memory was 328.8MB in the beginning and 318.1MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 22.11ms. Allocated memory is still 367.0MB. Free memory was 318.1MB in the beginning and 316.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 16.88ms. Allocated memory is still 367.0MB. Free memory was 316.4MB in the beginning and 315.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 314.28ms. Allocated memory is still 367.0MB. Free memory was 315.1MB in the beginning and 301.1MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 855812.84ms. Allocated memory was 367.0MB in the beginning and 7.4GB in the end (delta: 7.1GB). Free memory was 300.5MB in the beginning and 6.5GB in the end (delta: -6.2GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 107 PlacesBefore, 19 PlacesAfterwards, 109 TransitionsBefore, 15 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 7 FixpointIterations, 63 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 6 ConcurrentYvCompositions, 6 ChoiceCompositions, 105 TotalNumberOfCompositions, 744 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 744, independent: 744, independent conditional: 0, independent unconditional: 744, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 408, independent: 408, independent conditional: 0, independent unconditional: 408, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 744, independent: 336, independent conditional: 0, independent unconditional: 336, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 408, unknown conditional: 0, unknown unconditional: 408] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 83/224 universal loopers) in iteration 34,while PetriNetUnfolder was constructing finite prefix that currently has 173220 conditions, 12700 events (7219/12699 cut-off events. For 902586/902586 co-relation queries the response was YES. Maximal size of possible extension queue 1950. Compared 114554 event pairs, 395 based on Foata normal form. 0/14643 useless extension candidates. Maximal degree in co-relation 173006. Up to 6449 conditions per place.). - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 83/224 universal loopers) in iteration 34,while PetriNetUnfolder was constructing finite prefix that currently has 173220 conditions, 12700 events (7219/12699 cut-off events. For 902586/902586 co-relation queries the response was YES. Maximal size of possible extension queue 1950. Compared 114554 event pairs, 395 based on Foata normal form. 0/14643 useless extension candidates. Maximal degree in co-relation 173006. Up to 6449 conditions per place.). - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 83/224 universal loopers) in iteration 34,while PetriNetUnfolder was constructing finite prefix that currently has 173220 conditions, 12700 events (7219/12699 cut-off events. For 902586/902586 co-relation queries the response was YES. Maximal size of possible extension queue 1950. Compared 114554 event pairs, 395 based on Foata normal form. 0/14643 useless extension candidates. Maximal degree in co-relation 173006. Up to 6449 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 136 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: 855.7s, OverallIterations: 34, TraceHistogramMax: 3, PathProgramHistogramMax: 25, EmptinessCheckTime: 0.0s, AutomataDifference: 810.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 9 mSolverCounterUnknown, 2908 SdHoareTripleChecker+Valid, 57.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2908 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 55.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 370 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16576 IncrementalHoareTripleChecker+Invalid, 16955 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 370 mSolverCounterUnsat, 0 mSDtfsCounter, 16576 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1515 GetRequests, 714 SyntacticMatches, 58 SemanticMatches, 743 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5466 ImplicationChecksByTransitivity, 325.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169792occurred in iteration=33, InterpolantAutomatonStates: 574, 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: 0.2s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 31.8s InterpolantComputationTime, 1093 NumberOfCodeBlocks, 1087 NumberOfCodeBlocksAsserted, 111 NumberOfCheckSat, 1519 ConstructedInterpolants, 89 QuantifiedInterpolants, 27999 SizeOfPredicates, 141 NumberOfNonLiveVariables, 3943 ConjunctsInSsa, 394 ConjunctsInUnsatCore, 94 InterpolantComputations, 4 PerfectInterpolantSequences, 201/770 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