/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/parallel-misc-3-extended.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 20:55:41,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 20:55:41,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 20:55:41,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 20:55:41,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 20:55:41,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 20:55:41,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 20:55:41,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 20:55:41,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 20:55:41,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 20:55:41,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 20:55:41,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 20:55:41,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 20:55:41,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 20:55:41,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 20:55:41,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 20:55:41,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 20:55:41,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 20:55:41,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 20:55:41,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 20:55:41,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 20:55:41,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 20:55:41,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 20:55:41,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 20:55:41,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 20:55:41,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 20:55:41,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 20:55:41,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 20:55:41,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 20:55:41,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 20:55:41,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 20:55:41,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 20:55:41,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 20:55:41,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 20:55:41,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 20:55:41,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 20:55:41,981 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 20:55:41,999 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 20:55:41,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 20:55:42,000 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 20:55:42,000 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 20:55:42,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 20:55:42,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 20:55:42,001 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 20:55:42,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 20:55:42,001 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 20:55:42,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 20:55:42,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 20:55:42,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 20:55:42,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 20:55:42,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 20:55:42,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 20:55:42,002 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 20:55:42,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 20:55:42,002 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 20:55:42,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 20:55:42,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 20:55:42,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 20:55:42,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 20:55:42,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 20:55:42,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:55:42,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 20:55:42,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 20:55:42,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 20:55:42,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 20:55:42,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 20:55:42,003 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 20:55:42,003 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 20:55:42,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 20:55:42,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 20:55:42,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 20:55:42,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 20:55:42,197 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 20:55:42,197 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 20:55:42,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2023-01-27 20:55:43,163 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 20:55:43,288 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 20:55:43,289 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2023-01-27 20:55:43,293 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6a8cf88d/c78b8fb6e5f842998f79e33d2d9c016b/FLAGcb9197379 [2023-01-27 20:55:43,305 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6a8cf88d/c78b8fb6e5f842998f79e33d2d9c016b [2023-01-27 20:55:43,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 20:55:43,308 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 20:55:43,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 20:55:43,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 20:55:43,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 20:55:43,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:55:43" (1/1) ... [2023-01-27 20:55:43,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a7c7cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:55:43, skipping insertion in model container [2023-01-27 20:55:43,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:55:43" (1/1) ... [2023-01-27 20:55:43,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 20:55:43,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 20:55:43,439 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/parallel-misc-3-extended.wvr.c[2856,2869] [2023-01-27 20:55:43,442 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:55:43,448 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 20:55:43,460 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c[2856,2869] [2023-01-27 20:55:43,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:55:43,467 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 20:55:43,467 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 20:55:43,471 INFO L208 MainTranslator]: Completed translation [2023-01-27 20:55:43,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:55:43 WrapperNode [2023-01-27 20:55:43,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 20:55:43,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 20:55:43,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 20:55:43,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 20:55:43,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:55:43" (1/1) ... [2023-01-27 20:55:43,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:55:43" (1/1) ... [2023-01-27 20:55:43,490 INFO L138 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-01-27 20:55:43,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 20:55:43,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 20:55:43,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 20:55:43,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 20:55:43,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:55:43" (1/1) ... [2023-01-27 20:55:43,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:55:43" (1/1) ... [2023-01-27 20:55:43,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:55:43" (1/1) ... [2023-01-27 20:55:43,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:55:43" (1/1) ... [2023-01-27 20:55:43,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:55:43" (1/1) ... [2023-01-27 20:55:43,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:55:43" (1/1) ... [2023-01-27 20:55:43,504 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:55:43" (1/1) ... [2023-01-27 20:55:43,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:55:43" (1/1) ... [2023-01-27 20:55:43,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 20:55:43,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 20:55:43,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 20:55:43,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 20:55:43,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:55:43" (1/1) ... [2023-01-27 20:55:43,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:55:43,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:55:43,543 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 20:55:43,548 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 20:55:43,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 20:55:43,565 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 20:55:43,565 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 20:55:43,566 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 20:55:43,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 20:55:43,566 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 20:55:43,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 20:55:43,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 20:55:43,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 20:55:43,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 20:55:43,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 20:55:43,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 20:55:43,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 20:55:43,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 20:55:43,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 20:55:43,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 20:55:43,570 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 20:55:43,644 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 20:55:43,646 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 20:55:43,856 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 20:55:43,871 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 20:55:43,871 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-27 20:55:43,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:55:43 BoogieIcfgContainer [2023-01-27 20:55:43,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 20:55:43,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 20:55:43,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 20:55:43,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 20:55:43,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 08:55:43" (1/3) ... [2023-01-27 20:55:43,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a8d72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:55:43, skipping insertion in model container [2023-01-27 20:55:43,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:55:43" (2/3) ... [2023-01-27 20:55:43,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a8d72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:55:43, skipping insertion in model container [2023-01-27 20:55:43,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:55:43" (3/3) ... [2023-01-27 20:55:43,880 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2023-01-27 20:55:43,890 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 20:55:43,891 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 20:55:43,891 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 20:55:43,938 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 20:55:43,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 127 transitions, 278 flow [2023-01-27 20:55:43,993 INFO L130 PetriNetUnfolder]: 16/124 cut-off events. [2023-01-27 20:55:43,994 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:55:43,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 124 events. 16/124 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2023-01-27 20:55:43,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 127 transitions, 278 flow [2023-01-27 20:55:44,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 114 transitions, 246 flow [2023-01-27 20:55:44,003 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 20:55:44,008 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 114 transitions, 246 flow [2023-01-27 20:55:44,010 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 114 transitions, 246 flow [2023-01-27 20:55:44,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 114 transitions, 246 flow [2023-01-27 20:55:44,029 INFO L130 PetriNetUnfolder]: 16/114 cut-off events. [2023-01-27 20:55:44,030 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:55:44,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 114 events. 16/114 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 144 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2023-01-27 20:55:44,032 INFO L119 LiptonReduction]: Number of co-enabled transitions 3240 [2023-01-27 20:55:46,907 INFO L134 LiptonReduction]: Checked pairs total: 3005 [2023-01-27 20:55:46,907 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-01-27 20:55:46,917 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 20:55:46,921 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;@2517284c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 20:55:46,921 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 20:55:46,925 INFO L130 PetriNetUnfolder]: 3/18 cut-off events. [2023-01-27 20:55:46,925 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:55:46,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:55:46,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:55:46,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:55:46,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:55:46,929 INFO L85 PathProgramCache]: Analyzing trace with hash -135806213, now seen corresponding path program 1 times [2023-01-27 20:55:46,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:55:46,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366994374] [2023-01-27 20:55:46,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:55:46,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:55:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:55:47,134 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 20:55:47,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:55:47,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366994374] [2023-01-27 20:55:47,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366994374] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:55:47,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:55:47,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 20:55:47,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356241741] [2023-01-27 20:55:47,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:55:47,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:55:47,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:55:47,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:55:47,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:55:47,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 240 [2023-01-27 20:55:47,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 20:55:47,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:55:47,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 240 [2023-01-27 20:55:47,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:55:47,219 INFO L130 PetriNetUnfolder]: 111/168 cut-off events. [2023-01-27 20:55:47,219 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-01-27 20:55:47,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 168 events. 111/168 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 334 event pairs, 17 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 244. Up to 105 conditions per place. [2023-01-27 20:55:47,221 INFO L137 encePairwiseOnDemand]: 237/240 looper letters, 27 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-01-27 20:55:47,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 140 flow [2023-01-27 20:55:47,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:55:47,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:55:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-01-27 20:55:47,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2023-01-27 20:55:47,231 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-01-27 20:55:47,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-01-27 20:55:47,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:55:47,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-01-27 20:55:47,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states 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 20:55:47,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 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 20:55:47,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 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 20:55:47,241 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 56 flow. Second operand 3 states and 357 transitions. [2023-01-27 20:55:47,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 140 flow [2023-01-27 20:55:47,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 29 transitions, 124 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 20:55:47,244 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2023-01-27 20:55:47,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2023-01-27 20:55:47,248 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2023-01-27 20:55:47,248 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2023-01-27 20:55:47,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 20:55:47,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:55:47,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:55:47,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 20:55:47,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:55:47,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:55:47,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1305020753, now seen corresponding path program 1 times [2023-01-27 20:55:47,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:55:47,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101784464] [2023-01-27 20:55:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:55:47,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:55:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:55:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:55:47,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:55:47,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101784464] [2023-01-27 20:55:47,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101784464] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:55:47,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:55:47,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 20:55:47,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165356454] [2023-01-27 20:55:47,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:55:47,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:55:47,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:55:47,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:55:47,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:55:47,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 240 [2023-01-27 20:55:47,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states 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 20:55:47,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:55:47,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 240 [2023-01-27 20:55:47,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:55:47,438 INFO L130 PetriNetUnfolder]: 151/226 cut-off events. [2023-01-27 20:55:47,438 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-01-27 20:55:47,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 226 events. 151/226 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 549 event pairs, 11 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 188. Up to 185 conditions per place. [2023-01-27 20:55:47,439 INFO L137 encePairwiseOnDemand]: 237/240 looper letters, 29 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-01-27 20:55:47,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 31 transitions, 149 flow [2023-01-27 20:55:47,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:55:47,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:55:47,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-01-27 20:55:47,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2023-01-27 20:55:47,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-01-27 20:55:47,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-01-27 20:55:47,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:55:47,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-01-27 20:55:47,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states 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 20:55:47,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 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 20:55:47,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 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 20:55:47,445 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 3 states and 357 transitions. [2023-01-27 20:55:47,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 31 transitions, 149 flow [2023-01-27 20:55:47,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 31 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:55:47,446 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 66 flow [2023-01-27 20:55:47,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2023-01-27 20:55:47,447 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-01-27 20:55:47,447 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 66 flow [2023-01-27 20:55:47,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states 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 20:55:47,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:55:47,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:55:47,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 20:55:47,448 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:55:47,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:55:47,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1756026437, now seen corresponding path program 1 times [2023-01-27 20:55:47,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:55:47,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379395745] [2023-01-27 20:55:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:55:47,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:55:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:55:47,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:55:47,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:55:47,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379395745] [2023-01-27 20:55:47,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379395745] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:55:47,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:55:47,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 20:55:47,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400472294] [2023-01-27 20:55:47,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:55:47,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:55:47,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:55:47,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:55:47,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:55:47,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 240 [2023-01-27 20:55:47,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 20:55:47,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:55:47,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 240 [2023-01-27 20:55:47,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:55:47,577 INFO L130 PetriNetUnfolder]: 220/325 cut-off events. [2023-01-27 20:55:47,578 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2023-01-27 20:55:47,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 325 events. 220/325 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 867 event pairs, 28 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 596. Up to 243 conditions per place. [2023-01-27 20:55:47,583 INFO L137 encePairwiseOnDemand]: 237/240 looper letters, 31 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-01-27 20:55:47,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 171 flow [2023-01-27 20:55:47,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:55:47,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:55:47,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-01-27 20:55:47,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2023-01-27 20:55:47,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-01-27 20:55:47,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-01-27 20:55:47,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:55:47,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-01-27 20:55:47,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states 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 20:55:47,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 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 20:55:47,588 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 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 20:55:47,588 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 66 flow. Second operand 3 states and 357 transitions. [2023-01-27 20:55:47,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 171 flow [2023-01-27 20:55:47,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 33 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:55:47,590 INFO L231 Difference]: Finished difference. Result has 27 places, 22 transitions, 76 flow [2023-01-27 20:55:47,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=27, PETRI_TRANSITIONS=22} [2023-01-27 20:55:47,591 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-01-27 20:55:47,593 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 22 transitions, 76 flow [2023-01-27 20:55:47,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 20:55:47,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:55:47,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:55:47,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 20:55:47,594 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:55:47,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:55:47,594 INFO L85 PathProgramCache]: Analyzing trace with hash -170860382, now seen corresponding path program 1 times [2023-01-27 20:55:47,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:55:47,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135132626] [2023-01-27 20:55:47,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:55:47,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:55:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:55:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:55:47,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:55:47,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135132626] [2023-01-27 20:55:47,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135132626] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:55:47,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335042876] [2023-01-27 20:55:47,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:55:47,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:55:47,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:55:47,826 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 20:55:47,829 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 20:55:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:55:47,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-27 20:55:47,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:55:48,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:55:48,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:55:48,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:55:48,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335042876] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:55:48,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:55:48,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 4] total 10 [2023-01-27 20:55:48,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401167597] [2023-01-27 20:55:48,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:55:48,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:55:48,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:55:48,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:55:48,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:55:48,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 240 [2023-01-27 20:55:48,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 76 flow. Second operand has 11 states, 11 states have (on average 87.45454545454545) internal successors, (962), 11 states have internal predecessors, (962), 0 states have call successors, (0), 0 states 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 20:55:48,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:55:48,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 240 [2023-01-27 20:55:48,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:55:48,799 INFO L130 PetriNetUnfolder]: 397/582 cut-off events. [2023-01-27 20:55:48,799 INFO L131 PetriNetUnfolder]: For 223/223 co-relation queries the response was YES. [2023-01-27 20:55:48,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 582 events. 397/582 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1756 event pairs, 0 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 489. Up to 177 conditions per place. [2023-01-27 20:55:48,802 INFO L137 encePairwiseOnDemand]: 234/240 looper letters, 116 selfloop transitions, 29 changer transitions 0/145 dead transitions. [2023-01-27 20:55:48,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 145 transitions, 772 flow [2023-01-27 20:55:48,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-27 20:55:48,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-27 20:55:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1553 transitions. [2023-01-27 20:55:48,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38063725490196076 [2023-01-27 20:55:48,806 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1553 transitions. [2023-01-27 20:55:48,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1553 transitions. [2023-01-27 20:55:48,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:55:48,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1553 transitions. [2023-01-27 20:55:48,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 91.3529411764706) internal successors, (1553), 17 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states 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 20:55:48,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 240.0) internal successors, (4320), 18 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states 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 20:55:48,817 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 240.0) internal successors, (4320), 18 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states 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 20:55:48,817 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 76 flow. Second operand 17 states and 1553 transitions. [2023-01-27 20:55:48,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 145 transitions, 772 flow [2023-01-27 20:55:48,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 145 transitions, 766 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:55:48,820 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 319 flow [2023-01-27 20:55:48,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=319, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2023-01-27 20:55:48,822 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 24 predicate places. [2023-01-27 20:55:48,822 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 319 flow [2023-01-27 20:55:48,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 87.45454545454545) internal successors, (962), 11 states have internal predecessors, (962), 0 states have call successors, (0), 0 states 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 20:55:48,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:55:48,822 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:55:48,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 20:55:49,027 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 20:55:49,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:55:49,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:55:49,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1244112525, now seen corresponding path program 2 times [2023-01-27 20:55:49,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:55:49,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123973219] [2023-01-27 20:55:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:55:49,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:55:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:55:49,250 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:55:49,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:55:49,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123973219] [2023-01-27 20:55:49,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123973219] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:55:49,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37377573] [2023-01-27 20:55:49,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:55:49,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:55:49,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:55:49,252 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 20:55:49,254 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 20:55:49,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:55:49,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:55:49,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-27 20:55:49,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:55:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 20:55:49,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:55:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:55:49,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37377573] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:55:49,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:55:49,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 4] total 8 [2023-01-27 20:55:49,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650350676] [2023-01-27 20:55:49,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:55:49,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:55:49,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:55:49,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:55:49,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:55:49,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 240 [2023-01-27 20:55:49,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 319 flow. Second operand has 9 states, 9 states have (on average 101.88888888888889) internal successors, (917), 9 states have internal predecessors, (917), 0 states have call successors, (0), 0 states 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 20:55:49,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:55:49,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 240 [2023-01-27 20:55:49,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:55:49,768 INFO L130 PetriNetUnfolder]: 503/734 cut-off events. [2023-01-27 20:55:49,769 INFO L131 PetriNetUnfolder]: For 1625/1625 co-relation queries the response was YES. [2023-01-27 20:55:49,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2833 conditions, 734 events. 503/734 cut-off events. For 1625/1625 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2366 event pairs, 9 based on Foata normal form. 0/630 useless extension candidates. Maximal degree in co-relation 2162. Up to 223 conditions per place. [2023-01-27 20:55:49,773 INFO L137 encePairwiseOnDemand]: 235/240 looper letters, 148 selfloop transitions, 30 changer transitions 0/178 dead transitions. [2023-01-27 20:55:49,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 178 transitions, 1451 flow [2023-01-27 20:55:49,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:55:49,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:55:49,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1048 transitions. [2023-01-27 20:55:49,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2023-01-27 20:55:49,775 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1048 transitions. [2023-01-27 20:55:49,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1048 transitions. [2023-01-27 20:55:49,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:55:49,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1048 transitions. [2023-01-27 20:55:49,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 104.8) internal successors, (1048), 10 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states 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 20:55:49,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 240.0) internal successors, (2640), 11 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states 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 20:55:49,780 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 240.0) internal successors, (2640), 11 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states 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 20:55:49,780 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 319 flow. Second operand 10 states and 1048 transitions. [2023-01-27 20:55:49,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 178 transitions, 1451 flow [2023-01-27 20:55:49,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 178 transitions, 1116 flow, removed 143 selfloop flow, removed 3 redundant places. [2023-01-27 20:55:49,788 INFO L231 Difference]: Finished difference. Result has 61 places, 75 transitions, 511 flow [2023-01-27 20:55:49,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=511, PETRI_PLACES=61, PETRI_TRANSITIONS=75} [2023-01-27 20:55:49,788 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 35 predicate places. [2023-01-27 20:55:49,788 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 75 transitions, 511 flow [2023-01-27 20:55:49,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 101.88888888888889) internal successors, (917), 9 states have internal predecessors, (917), 0 states have call successors, (0), 0 states 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 20:55:49,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:55:49,789 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:55:49,796 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 20:55:49,993 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 20:55:49,996 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:55:49,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:55:49,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1158182375, now seen corresponding path program 3 times [2023-01-27 20:55:49,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:55:49,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553029587] [2023-01-27 20:55:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:55:49,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:55:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:55:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:55:50,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:55:50,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553029587] [2023-01-27 20:55:50,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553029587] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:55:50,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317418720] [2023-01-27 20:55:50,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:55:50,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:55:50,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:55:50,776 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 20:55:50,778 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 20:55:50,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-27 20:55:50,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:55:50,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-27 20:55:50,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:55:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:55:51,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:55:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:55:52,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317418720] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:55:52,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:55:52,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 20 [2023-01-27 20:55:52,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694872555] [2023-01-27 20:55:52,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:55:52,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-27 20:55:52,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:55:52,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-27 20:55:52,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2023-01-27 20:55:52,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 240 [2023-01-27 20:55:52,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 75 transitions, 511 flow. Second operand has 22 states, 22 states have (on average 74.81818181818181) internal successors, (1646), 22 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states 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 20:55:52,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:55:52,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 240 [2023-01-27 20:55:52,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:55:54,355 INFO L130 PetriNetUnfolder]: 2467/3512 cut-off events. [2023-01-27 20:55:54,355 INFO L131 PetriNetUnfolder]: For 12642/12642 co-relation queries the response was YES. [2023-01-27 20:55:54,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13933 conditions, 3512 events. 2467/3512 cut-off events. For 12642/12642 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 15114 event pairs, 18 based on Foata normal form. 32/3210 useless extension candidates. Maximal degree in co-relation 12410. Up to 801 conditions per place. [2023-01-27 20:55:54,375 INFO L137 encePairwiseOnDemand]: 232/240 looper letters, 224 selfloop transitions, 410 changer transitions 24/658 dead transitions. [2023-01-27 20:55:54,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 658 transitions, 5364 flow [2023-01-27 20:55:54,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-01-27 20:55:54,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-01-27 20:55:54,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2933 transitions. [2023-01-27 20:55:54,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33946759259259257 [2023-01-27 20:55:54,381 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2933 transitions. [2023-01-27 20:55:54,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2933 transitions. [2023-01-27 20:55:54,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:55:54,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2933 transitions. [2023-01-27 20:55:54,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 81.47222222222223) internal successors, (2933), 36 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states 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 20:55:54,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 240.0) internal successors, (8880), 37 states have internal predecessors, (8880), 0 states have call successors, (0), 0 states 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 20:55:54,396 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 240.0) internal successors, (8880), 37 states have internal predecessors, (8880), 0 states have call successors, (0), 0 states 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 20:55:54,396 INFO L175 Difference]: Start difference. First operand has 61 places, 75 transitions, 511 flow. Second operand 36 states and 2933 transitions. [2023-01-27 20:55:54,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 658 transitions, 5364 flow [2023-01-27 20:55:54,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 658 transitions, 4976 flow, removed 183 selfloop flow, removed 1 redundant places. [2023-01-27 20:55:54,466 INFO L231 Difference]: Finished difference. Result has 107 places, 472 transitions, 4389 flow [2023-01-27 20:55:54,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4389, PETRI_PLACES=107, PETRI_TRANSITIONS=472} [2023-01-27 20:55:54,468 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 81 predicate places. [2023-01-27 20:55:54,468 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 472 transitions, 4389 flow [2023-01-27 20:55:54,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 74.81818181818181) internal successors, (1646), 22 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states 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 20:55:54,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:55:54,469 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:55:54,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-27 20:55:54,673 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 20:55:54,674 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:55:54,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:55:54,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1565513747, now seen corresponding path program 4 times [2023-01-27 20:55:54,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:55:54,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356838166] [2023-01-27 20:55:54,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:55:54,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:55:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:55:55,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:55:55,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:55:55,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356838166] [2023-01-27 20:55:55,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356838166] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:55:55,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800372083] [2023-01-27 20:55:55,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:55:55,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:55:55,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:55:55,536 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 20:55:55,576 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 20:55:55,613 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:55:55,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:55:55,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-27 20:55:55,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:55:55,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:55:55,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:55:56,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:55:56,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800372083] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:55:56,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:55:56,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 6] total 22 [2023-01-27 20:55:56,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142433960] [2023-01-27 20:55:56,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:55:56,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-27 20:55:56,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:55:56,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-27 20:55:56,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2023-01-27 20:55:56,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 240 [2023-01-27 20:55:56,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 472 transitions, 4389 flow. Second operand has 24 states, 24 states have (on average 74.58333333333333) internal successors, (1790), 24 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states 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 20:55:56,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:55:56,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 240 [2023-01-27 20:55:56,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:55:59,884 INFO L130 PetriNetUnfolder]: 6206/8902 cut-off events. [2023-01-27 20:55:59,885 INFO L131 PetriNetUnfolder]: For 40470/40470 co-relation queries the response was YES. [2023-01-27 20:55:59,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42649 conditions, 8902 events. 6206/8902 cut-off events. For 40470/40470 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 46320 event pairs, 26 based on Foata normal form. 54/8540 useless extension candidates. Maximal degree in co-relation 41148. Up to 2127 conditions per place. [2023-01-27 20:55:59,934 INFO L137 encePairwiseOnDemand]: 232/240 looper letters, 500 selfloop transitions, 1094 changer transitions 63/1657 dead transitions. [2023-01-27 20:55:59,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 1657 transitions, 17162 flow [2023-01-27 20:55:59,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-01-27 20:55:59,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-01-27 20:55:59,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3834 transitions. [2023-01-27 20:55:59,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3398936170212766 [2023-01-27 20:55:59,942 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 3834 transitions. [2023-01-27 20:55:59,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 3834 transitions. [2023-01-27 20:55:59,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:55:59,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 3834 transitions. [2023-01-27 20:55:59,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 81.57446808510639) internal successors, (3834), 47 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states 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 20:55:59,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 240.0) internal successors, (11520), 48 states have internal predecessors, (11520), 0 states have call successors, (0), 0 states 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 20:55:59,959 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 240.0) internal successors, (11520), 48 states have internal predecessors, (11520), 0 states have call successors, (0), 0 states 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 20:55:59,959 INFO L175 Difference]: Start difference. First operand has 107 places, 472 transitions, 4389 flow. Second operand 47 states and 3834 transitions. [2023-01-27 20:55:59,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 1657 transitions, 17162 flow [2023-01-27 20:56:00,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 1657 transitions, 15778 flow, removed 690 selfloop flow, removed 1 redundant places. [2023-01-27 20:56:00,435 INFO L231 Difference]: Finished difference. Result has 172 places, 1354 transitions, 15630 flow [2023-01-27 20:56:00,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=3817, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=349, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=15630, PETRI_PLACES=172, PETRI_TRANSITIONS=1354} [2023-01-27 20:56:00,435 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 146 predicate places. [2023-01-27 20:56:00,435 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 1354 transitions, 15630 flow [2023-01-27 20:56:00,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 74.58333333333333) internal successors, (1790), 24 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states 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 20:56:00,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:56:00,436 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:56:00,443 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 20:56:00,641 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 20:56:00,641 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:56:00,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:56:00,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1531481615, now seen corresponding path program 5 times [2023-01-27 20:56:00,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:56:00,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850860986] [2023-01-27 20:56:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:56:00,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:56:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:56:01,673 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:56:01,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:56:01,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850860986] [2023-01-27 20:56:01,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850860986] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:56:01,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657041296] [2023-01-27 20:56:01,674 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:56:01,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:56:01,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:56:01,675 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 20:56:01,677 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 20:56:01,741 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-27 20:56:01,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:56:01,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-27 20:56:01,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:56:01,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:56:01,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:56:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:56:02,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657041296] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:56:02,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:56:02,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 24 [2023-01-27 20:56:02,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639310234] [2023-01-27 20:56:02,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:56:02,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-27 20:56:02,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:56:02,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-27 20:56:02,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2023-01-27 20:56:02,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 240 [2023-01-27 20:56:02,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 1354 transitions, 15630 flow. Second operand has 26 states, 26 states have (on average 69.26923076923077) internal successors, (1801), 26 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states 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 20:56:02,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:56:02,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 240 [2023-01-27 20:56:02,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:56:13,049 INFO L130 PetriNetUnfolder]: 17734/24832 cut-off events. [2023-01-27 20:56:13,049 INFO L131 PetriNetUnfolder]: For 146156/146156 co-relation queries the response was YES. [2023-01-27 20:56:13,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148649 conditions, 24832 events. 17734/24832 cut-off events. For 146156/146156 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 143648 event pairs, 28 based on Foata normal form. 57/24713 useless extension candidates. Maximal degree in co-relation 145971. Up to 7423 conditions per place. [2023-01-27 20:56:13,228 INFO L137 encePairwiseOnDemand]: 232/240 looper letters, 1184 selfloop transitions, 3774 changer transitions 43/5001 dead transitions. [2023-01-27 20:56:13,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 5001 transitions, 66210 flow [2023-01-27 20:56:13,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-01-27 20:56:13,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2023-01-27 20:56:13,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 6756 transitions. [2023-01-27 20:56:13,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3162921348314607 [2023-01-27 20:56:13,237 INFO L72 ComplementDD]: Start complementDD. Operand 89 states and 6756 transitions. [2023-01-27 20:56:13,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 6756 transitions. [2023-01-27 20:56:13,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:56:13,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 89 states and 6756 transitions. [2023-01-27 20:56:13,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 90 states, 89 states have (on average 75.91011235955057) internal successors, (6756), 89 states have internal predecessors, (6756), 0 states have call successors, (0), 0 states 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 20:56:13,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 90 states, 90 states have (on average 240.0) internal successors, (21600), 90 states have internal predecessors, (21600), 0 states have call successors, (0), 0 states 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 20:56:13,280 INFO L81 ComplementDD]: Finished complementDD. Result has 90 states, 90 states have (on average 240.0) internal successors, (21600), 90 states have internal predecessors, (21600), 0 states have call successors, (0), 0 states 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 20:56:13,280 INFO L175 Difference]: Start difference. First operand has 172 places, 1354 transitions, 15630 flow. Second operand 89 states and 6756 transitions. [2023-01-27 20:56:13,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 5001 transitions, 66210 flow [2023-01-27 20:56:21,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 5001 transitions, 63967 flow, removed 1112 selfloop flow, removed 2 redundant places. [2023-01-27 20:56:21,467 INFO L231 Difference]: Finished difference. Result has 293 places, 4504 transitions, 66708 flow [2023-01-27 20:56:21,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=15061, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=89, PETRI_FLOW=66708, PETRI_PLACES=293, PETRI_TRANSITIONS=4504} [2023-01-27 20:56:21,468 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 267 predicate places. [2023-01-27 20:56:21,469 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 4504 transitions, 66708 flow [2023-01-27 20:56:21,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 69.26923076923077) internal successors, (1801), 26 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states 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 20:56:21,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:56:21,469 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:56:21,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-27 20:56:21,670 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 20:56:21,670 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:56:21,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:56:21,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1711291265, now seen corresponding path program 6 times [2023-01-27 20:56:21,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:56:21,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005496206] [2023-01-27 20:56:21,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:56:21,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:56:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:56:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:56:22,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:56:22,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005496206] [2023-01-27 20:56:22,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005496206] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:56:22,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635937960] [2023-01-27 20:56:22,631 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:56:22,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:56:22,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:56:22,645 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 20:56:22,649 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 20:56:22,726 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 20:56:22,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:56:22,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-27 20:56:22,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:56:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:56:23,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:56:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:56:23,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635937960] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:56:23,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:56:23,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 23 [2023-01-27 20:56:23,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949338692] [2023-01-27 20:56:23,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:56:23,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-27 20:56:23,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:56:23,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-27 20:56:23,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2023-01-27 20:56:23,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 240 [2023-01-27 20:56:23,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 4504 transitions, 66708 flow. Second operand has 25 states, 25 states have (on average 74.16) internal successors, (1854), 25 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 20:56:23,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:56:23,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 240 [2023-01-27 20:56:23,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:56:49,441 INFO L130 PetriNetUnfolder]: 30522/43870 cut-off events. [2023-01-27 20:56:49,441 INFO L131 PetriNetUnfolder]: For 400834/400834 co-relation queries the response was YES. [2023-01-27 20:56:49,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313607 conditions, 43870 events. 30522/43870 cut-off events. For 400834/400834 co-relation queries the response was YES. Maximal size of possible extension queue 2154. Compared 290556 event pairs, 82 based on Foata normal form. 68/43938 useless extension candidates. Maximal degree in co-relation 312221. Up to 13621 conditions per place. [2023-01-27 20:56:50,090 INFO L137 encePairwiseOnDemand]: 232/240 looper letters, 2759 selfloop transitions, 6119 changer transitions 90/8968 dead transitions. [2023-01-27 20:56:50,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 8968 transitions, 147419 flow [2023-01-27 20:56:50,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-01-27 20:56:50,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2023-01-27 20:56:50,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 6706 transitions. [2023-01-27 20:56:50,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3366465863453815 [2023-01-27 20:56:50,096 INFO L72 ComplementDD]: Start complementDD. Operand 83 states and 6706 transitions. [2023-01-27 20:56:50,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 6706 transitions. [2023-01-27 20:56:50,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:56:50,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 83 states and 6706 transitions. [2023-01-27 20:56:50,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 84 states, 83 states have (on average 80.79518072289157) internal successors, (6706), 83 states have internal predecessors, (6706), 0 states have call successors, (0), 0 states 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 20:56:50,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 84 states, 84 states have (on average 240.0) internal successors, (20160), 84 states have internal predecessors, (20160), 0 states have call successors, (0), 0 states 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 20:56:50,118 INFO L81 ComplementDD]: Finished complementDD. Result has 84 states, 84 states have (on average 240.0) internal successors, (20160), 84 states have internal predecessors, (20160), 0 states have call successors, (0), 0 states 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 20:56:50,118 INFO L175 Difference]: Start difference. First operand has 293 places, 4504 transitions, 66708 flow. Second operand 83 states and 6706 transitions. [2023-01-27 20:56:50,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 8968 transitions, 147419 flow [2023-01-27 20:57:49,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 8968 transitions, 140951 flow, removed 3062 selfloop flow, removed 13 redundant places. [2023-01-27 20:57:49,643 INFO L231 Difference]: Finished difference. Result has 399 places, 7918 transitions, 138546 flow [2023-01-27 20:57:49,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=63804, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3098, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=837, PETRI_DIFFERENCE_SUBTRAHEND_STATES=83, PETRI_FLOW=138546, PETRI_PLACES=399, PETRI_TRANSITIONS=7918} [2023-01-27 20:57:49,646 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 373 predicate places. [2023-01-27 20:57:49,646 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 7918 transitions, 138546 flow [2023-01-27 20:57:49,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 74.16) internal successors, (1854), 25 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 20:57:49,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:57:49,647 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:57:49,653 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 20:57:49,851 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 20:57:49,852 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:57:49,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:57:49,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1401432863, now seen corresponding path program 7 times [2023-01-27 20:57:49,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:57:49,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857974609] [2023-01-27 20:57:49,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:49,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:57:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:50,466 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:50,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:50,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857974609] [2023-01-27 20:57:50,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857974609] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:57:50,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291565177] [2023-01-27 20:57:50,467 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 20:57:50,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:57:50,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:57:50,468 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 20:57:50,470 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 20:57:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:50,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-27 20:57:50,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:57:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:50,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:57:51,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:51,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291565177] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:57:51,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:57:51,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 22 [2023-01-27 20:57:51,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185219892] [2023-01-27 20:57:51,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:57:51,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-27 20:57:51,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:51,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-27 20:57:51,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-01-27 20:57:51,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 240 [2023-01-27 20:57:51,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 7918 transitions, 138546 flow. Second operand has 24 states, 24 states have (on average 74.16666666666667) internal successors, (1780), 24 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states 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 20:57:51,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:51,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 240 [2023-01-27 20:57:51,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:59:22,186 INFO L130 PetriNetUnfolder]: 55768/80973 cut-off events. [2023-01-27 20:59:22,186 INFO L131 PetriNetUnfolder]: For 912151/912151 co-relation queries the response was YES. [2023-01-27 20:59:23,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660732 conditions, 80973 events. 55768/80973 cut-off events. For 912151/912151 co-relation queries the response was YES. Maximal size of possible extension queue 3859. Compared 591688 event pairs, 148 based on Foata normal form. 188/81161 useless extension candidates. Maximal degree in co-relation 658230. Up to 23873 conditions per place. [2023-01-27 20:59:24,218 INFO L137 encePairwiseOnDemand]: 232/240 looper letters, 4311 selfloop transitions, 11241 changer transitions 238/15790 dead transitions. [2023-01-27 20:59:24,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 15790 transitions, 304628 flow [2023-01-27 20:59:24,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-01-27 20:59:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2023-01-27 20:59:24,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 6895 transitions. [2023-01-27 20:59:24,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3340600775193798 [2023-01-27 20:59:24,224 INFO L72 ComplementDD]: Start complementDD. Operand 86 states and 6895 transitions. [2023-01-27 20:59:24,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 6895 transitions. [2023-01-27 20:59:24,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:59:24,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 86 states and 6895 transitions. [2023-01-27 20:59:24,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 87 states, 86 states have (on average 80.17441860465117) internal successors, (6895), 86 states have internal predecessors, (6895), 0 states have call successors, (0), 0 states 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 20:59:24,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 87 states, 87 states have (on average 240.0) internal successors, (20880), 87 states have internal predecessors, (20880), 0 states have call successors, (0), 0 states 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 20:59:24,251 INFO L81 ComplementDD]: Finished complementDD. Result has 87 states, 87 states have (on average 240.0) internal successors, (20880), 87 states have internal predecessors, (20880), 0 states have call successors, (0), 0 states 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 20:59:24,251 INFO L175 Difference]: Start difference. First operand has 399 places, 7918 transitions, 138546 flow. Second operand 86 states and 6895 transitions. [2023-01-27 20:59:24,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 15790 transitions, 304628 flow [2023-01-27 21:05:15,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 15790 transitions, 300255 flow, removed 2035 selfloop flow, removed 11 redundant places. [2023-01-27 21:05:15,493 INFO L231 Difference]: Finished difference. Result has 531 places, 14680 transitions, 302938 flow [2023-01-27 21:05:15,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=136732, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7918, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5380, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=302938, PETRI_PLACES=531, PETRI_TRANSITIONS=14680} [2023-01-27 21:05:15,500 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 505 predicate places. [2023-01-27 21:05:15,500 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 14680 transitions, 302938 flow [2023-01-27 21:05:15,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 74.16666666666667) internal successors, (1780), 24 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states 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 21:05:15,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:05:15,501 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:05:15,508 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 21:05:15,708 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 21:05:15,710 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:05:15,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:05:15,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1908179027, now seen corresponding path program 8 times [2023-01-27 21:05:15,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:05:15,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518818788] [2023-01-27 21:05:15,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:05:15,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:05:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:05:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:05:16,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:05:16,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518818788] [2023-01-27 21:05:16,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518818788] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:05:16,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987258185] [2023-01-27 21:05:16,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 21:05:16,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:05:16,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:05:16,437 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 21:05:16,440 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 21:05:16,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 21:05:16,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:05:16,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-27 21:05:16,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:05:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:05:16,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:05:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:05:17,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987258185] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:05:17,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:05:17,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 21 [2023-01-27 21:05:17,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78099547] [2023-01-27 21:05:17,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:05:17,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-27 21:05:17,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:05:17,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-27 21:05:17,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2023-01-27 21:05:17,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 240 [2023-01-27 21:05:17,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 14680 transitions, 302938 flow. Second operand has 23 states, 23 states have (on average 74.69565217391305) internal successors, (1718), 23 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states 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 21:05:17,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:05:17,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 240 [2023-01-27 21:05:17,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-01-27 21:09:22,530 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 21:09:22,543 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 21:09:23,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-01-27 21:09:23,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-27 21:09:25,435 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 21:09:25,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 21:09:25,436 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-01-27 21:09:25,437 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 21:09:25,437 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 21:09:25,437 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 21:09:25,437 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1] [2023-01-27 21:09:25,440 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 21:09:25,440 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 21:09:25,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 09:09:25 BasicIcfg [2023-01-27 21:09:25,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 21:09:25,442 INFO L158 Benchmark]: Toolchain (without parser) took 822133.97ms. Allocated memory was 375.4MB in the beginning and 5.6GB in the end (delta: 5.2GB). Free memory was 344.2MB in the beginning and 1.8GB in the end (delta: -1.5GB). Peak memory consumption was 5.7GB. Max. memory is 16.0GB. [2023-01-27 21:09:25,442 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory was 213.2MB in the beginning and 213.0MB in the end (delta: 176.2kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 21:09:25,442 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.97ms. Allocated memory is still 375.4MB. Free memory was 343.8MB in the beginning and 332.5MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 21:09:25,442 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.61ms. Allocated memory is still 375.4MB. Free memory was 332.5MB in the beginning and 331.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 21:09:25,442 INFO L158 Benchmark]: Boogie Preprocessor took 15.58ms. Allocated memory is still 375.4MB. Free memory was 331.0MB in the beginning and 329.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 21:09:25,443 INFO L158 Benchmark]: RCFGBuilder took 365.58ms. Allocated memory is still 375.4MB. Free memory was 329.2MB in the beginning and 313.8MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-01-27 21:09:25,443 INFO L158 Benchmark]: TraceAbstraction took 821565.22ms. Allocated memory was 375.4MB in the beginning and 5.6GB in the end (delta: 5.2GB). Free memory was 313.0MB in the beginning and 1.8GB in the end (delta: -1.5GB). Peak memory consumption was 5.7GB. Max. memory is 16.0GB. [2023-01-27 21:09:25,444 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory was 213.2MB in the beginning and 213.0MB in the end (delta: 176.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 161.97ms. Allocated memory is still 375.4MB. Free memory was 343.8MB in the beginning and 332.5MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 18.61ms. Allocated memory is still 375.4MB. Free memory was 332.5MB in the beginning and 331.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 15.58ms. Allocated memory is still 375.4MB. Free memory was 331.0MB in the beginning and 329.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 365.58ms. Allocated memory is still 375.4MB. Free memory was 329.2MB in the beginning and 313.8MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 821565.22ms. Allocated memory was 375.4MB in the beginning and 5.6GB in the end (delta: 5.2GB). Free memory was 313.0MB in the beginning and 1.8GB in the end (delta: -1.5GB). Peak memory consumption was 5.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 108 PlacesBefore, 26 PlacesAfterwards, 114 TransitionsBefore, 19 TransitionsAfterwards, 3240 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 8 ConcurrentYvCompositions, 13 ChoiceCompositions, 113 TotalNumberOfCompositions, 3005 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2864, independent: 2855, independent conditional: 0, independent unconditional: 2855, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1659, independent: 1653, independent conditional: 0, independent unconditional: 1653, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2864, independent: 1202, independent conditional: 0, independent unconditional: 1202, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 1659, unknown conditional: 0, unknown unconditional: 1659] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, 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: 127]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 157 locations, 4 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: 821.5s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 803.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3026 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3026 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 889 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8355 IncrementalHoareTripleChecker+Invalid, 9244 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 889 mSolverCounterUnsat, 0 mSDtfsCounter, 8355 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 779 GetRequests, 225 SyntacticMatches, 21 SemanticMatches, 533 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16958 ImplicationChecksByTransitivity, 22.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=302938occurred in iteration=10, InterpolantAutomatonStates: 377, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.9s InterpolantComputationTime, 395 NumberOfCodeBlocks, 395 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 9066 SizeOfPredicates, 86 NumberOfNonLiveVariables, 1316 ConjunctsInSsa, 155 ConjunctsInUnsatCore, 27 InterpolantComputations, 3 PerfectInterpolantSequences, 34/195 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