/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/popl20-prod-cons.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 22:36:58,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 22:36:58,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 22:36:58,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 22:36:58,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 22:36:58,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 22:36:58,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 22:36:58,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 22:36:58,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 22:36:58,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 22:36:58,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 22:36:58,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 22:36:58,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 22:36:58,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 22:36:58,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 22:36:58,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 22:36:58,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 22:36:58,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 22:36:58,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 22:36:58,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 22:36:58,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 22:36:58,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 22:36:58,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 22:36:58,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 22:36:58,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 22:36:58,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 22:36:58,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 22:36:58,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 22:36:58,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 22:36:58,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 22:36:58,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 22:36:58,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 22:36:58,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 22:36:58,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 22:36:58,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 22:36:58,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 22:36:58,403 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 22:36:58,430 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 22:36:58,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 22:36:58,431 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 22:36:58,431 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 22:36:58,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 22:36:58,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 22:36:58,432 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 22:36:58,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 22:36:58,433 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 22:36:58,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 22:36:58,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 22:36:58,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 22:36:58,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 22:36:58,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 22:36:58,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 22:36:58,434 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 22:36:58,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 22:36:58,434 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 22:36:58,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 22:36:58,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 22:36:58,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 22:36:58,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 22:36:58,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 22:36:58,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 22:36:58,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 22:36:58,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 22:36:58,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 22:36:58,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 22:36:58,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 22:36:58,436 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 22:36:58,437 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 22:36:58,437 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 22:36:58,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 22:36:58,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 22:36:58,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 22:36:58,690 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 22:36:58,690 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 22:36:58,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons.wvr.c [2023-01-27 22:36:59,788 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 22:37:00,019 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 22:37:00,020 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons.wvr.c [2023-01-27 22:37:00,027 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37c5521fe/c1a9c5b2da474d9e8a0b16ca59b13250/FLAGdda15677c [2023-01-27 22:37:00,042 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37c5521fe/c1a9c5b2da474d9e8a0b16ca59b13250 [2023-01-27 22:37:00,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 22:37:00,048 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 22:37:00,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 22:37:00,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 22:37:00,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 22:37:00,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 10:37:00" (1/1) ... [2023-01-27 22:37:00,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58cb1073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:37:00, skipping insertion in model container [2023-01-27 22:37:00,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 10:37:00" (1/1) ... [2023-01-27 22:37:00,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 22:37:00,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 22:37:00,260 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/popl20-prod-cons.wvr.c[3056,3069] [2023-01-27 22:37:00,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 22:37:00,281 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 22:37:00,316 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/popl20-prod-cons.wvr.c[3056,3069] [2023-01-27 22:37:00,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 22:37:00,325 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 22:37:00,326 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 22:37:00,332 INFO L208 MainTranslator]: Completed translation [2023-01-27 22:37:00,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:37:00 WrapperNode [2023-01-27 22:37:00,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 22:37:00,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 22:37:00,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 22:37:00,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 22:37:00,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:37:00" (1/1) ... [2023-01-27 22:37:00,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:37:00" (1/1) ... [2023-01-27 22:37:00,379 INFO L138 Inliner]: procedures = 25, calls = 50, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 170 [2023-01-27 22:37:00,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 22:37:00,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 22:37:00,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 22:37:00,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 22:37:00,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:37:00" (1/1) ... [2023-01-27 22:37:00,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:37:00" (1/1) ... [2023-01-27 22:37:00,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:37:00" (1/1) ... [2023-01-27 22:37:00,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:37:00" (1/1) ... [2023-01-27 22:37:00,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:37:00" (1/1) ... [2023-01-27 22:37:00,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:37:00" (1/1) ... [2023-01-27 22:37:00,399 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:37:00" (1/1) ... [2023-01-27 22:37:00,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:37:00" (1/1) ... [2023-01-27 22:37:00,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 22:37:00,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 22:37:00,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 22:37:00,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 22:37:00,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:37:00" (1/1) ... [2023-01-27 22:37:00,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 22:37:00,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:37:00,431 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 22:37:00,436 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 22:37:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 22:37:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 22:37:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 22:37:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 22:37:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 22:37:00,464 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 22:37:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 22:37:00,464 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 22:37:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 22:37:00,464 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 22:37:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 22:37:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 22:37:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 22:37:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 22:37:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 22:37:00,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 22:37:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 22:37:00,466 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 22:37:00,547 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 22:37:00,549 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 22:37:00,818 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 22:37:00,899 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 22:37:00,900 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-27 22:37:00,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 10:37:00 BoogieIcfgContainer [2023-01-27 22:37:00,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 22:37:00,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 22:37:00,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 22:37:00,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 22:37:00,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 10:37:00" (1/3) ... [2023-01-27 22:37:00,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a20f91a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 10:37:00, skipping insertion in model container [2023-01-27 22:37:00,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:37:00" (2/3) ... [2023-01-27 22:37:00,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a20f91a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 10:37:00, skipping insertion in model container [2023-01-27 22:37:00,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 10:37:00" (3/3) ... [2023-01-27 22:37:00,912 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons.wvr.c [2023-01-27 22:37:00,926 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 22:37:00,926 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 22:37:00,926 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 22:37:00,991 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 22:37:01,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 148 transitions, 320 flow [2023-01-27 22:37:01,081 INFO L130 PetriNetUnfolder]: 11/145 cut-off events. [2023-01-27 22:37:01,081 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 22:37:01,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 145 events. 11/145 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 84 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 116. Up to 3 conditions per place. [2023-01-27 22:37:01,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 148 transitions, 320 flow [2023-01-27 22:37:01,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 135 transitions, 288 flow [2023-01-27 22:37:01,098 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 22:37:01,105 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 135 transitions, 288 flow [2023-01-27 22:37:01,107 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 135 transitions, 288 flow [2023-01-27 22:37:01,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 135 transitions, 288 flow [2023-01-27 22:37:01,159 INFO L130 PetriNetUnfolder]: 11/135 cut-off events. [2023-01-27 22:37:01,160 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 22:37:01,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 135 events. 11/135 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 83 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 116. Up to 3 conditions per place. [2023-01-27 22:37:01,162 INFO L119 LiptonReduction]: Number of co-enabled transitions 1082 [2023-01-27 22:37:05,873 INFO L134 LiptonReduction]: Checked pairs total: 2030 [2023-01-27 22:37:05,874 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-01-27 22:37:05,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 22:37:05,899 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;@75b30809, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 22:37:05,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 22:37:05,904 INFO L130 PetriNetUnfolder]: 3/24 cut-off events. [2023-01-27 22:37:05,904 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 22:37:05,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:37:05,905 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 22:37:05,905 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 22:37:05,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:37:05,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1050761945, now seen corresponding path program 1 times [2023-01-27 22:37:05,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:37:05,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538977111] [2023-01-27 22:37:05,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:37:05,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:37:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:37:06,364 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 22:37:06,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:37:06,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538977111] [2023-01-27 22:37:06,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538977111] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:37:06,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:37:06,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 22:37:06,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168211297] [2023-01-27 22:37:06,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:37:06,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 22:37:06,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:37:06,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 22:37:06,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 22:37:06,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 283 [2023-01-27 22:37:06,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:37:06,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:37:06,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 283 [2023-01-27 22:37:06,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:37:06,540 INFO L130 PetriNetUnfolder]: 238/394 cut-off events. [2023-01-27 22:37:06,541 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2023-01-27 22:37:06,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 394 events. 238/394 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1530 event pairs, 14 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 687. Up to 129 conditions per place. [2023-01-27 22:37:06,545 INFO L137 encePairwiseOnDemand]: 278/283 looper letters, 44 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2023-01-27 22:37:06,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 51 transitions, 230 flow [2023-01-27 22:37:06,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 22:37:06,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 22:37:06,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 666 transitions. [2023-01-27 22:37:06,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4706713780918728 [2023-01-27 22:37:06,560 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 666 transitions. [2023-01-27 22:37:06,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 666 transitions. [2023-01-27 22:37:06,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:37:06,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 666 transitions. [2023-01-27 22:37:06,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 22:37:06,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:37:06,574 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:37:06,575 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 68 flow. Second operand 5 states and 666 transitions. [2023-01-27 22:37:06,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 51 transitions, 230 flow [2023-01-27 22:37:06,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 51 transitions, 207 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-01-27 22:37:06,579 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 84 flow [2023-01-27 22:37:06,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-01-27 22:37:06,584 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2023-01-27 22:37:06,584 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 84 flow [2023-01-27 22:37:06,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:37:06,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:37:06,585 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 22:37:06,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 22:37:06,585 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 22:37:06,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:37:06,585 INFO L85 PathProgramCache]: Analyzing trace with hash 982828987, now seen corresponding path program 2 times [2023-01-27 22:37:06,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:37:06,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177678140] [2023-01-27 22:37:06,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:37:06,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:37:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:37:06,875 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 22:37:06,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:37:06,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177678140] [2023-01-27 22:37:06,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177678140] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:37:06,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:37:06,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 22:37:06,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273900356] [2023-01-27 22:37:06,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:37:06,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 22:37:06,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:37:06,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 22:37:06,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 22:37:06,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 283 [2023-01-27 22:37:06,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 84 flow. Second operand has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states 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 22:37:06,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:37:06,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 283 [2023-01-27 22:37:06,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:37:07,098 INFO L130 PetriNetUnfolder]: 474/756 cut-off events. [2023-01-27 22:37:07,099 INFO L131 PetriNetUnfolder]: For 199/199 co-relation queries the response was YES. [2023-01-27 22:37:07,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 756 events. 474/756 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2877 event pairs, 37 based on Foata normal form. 20/717 useless extension candidates. Maximal degree in co-relation 658. Up to 278 conditions per place. [2023-01-27 22:37:07,104 INFO L137 encePairwiseOnDemand]: 276/283 looper letters, 59 selfloop transitions, 6 changer transitions 4/69 dead transitions. [2023-01-27 22:37:07,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 69 transitions, 318 flow [2023-01-27 22:37:07,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 22:37:07,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 22:37:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 888 transitions. [2023-01-27 22:37:07,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482584553255931 [2023-01-27 22:37:07,108 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 888 transitions. [2023-01-27 22:37:07,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 888 transitions. [2023-01-27 22:37:07,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:37:07,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 888 transitions. [2023-01-27 22:37:07,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 126.85714285714286) internal successors, (888), 7 states have internal predecessors, (888), 0 states have call successors, (0), 0 states 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 22:37:07,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 283.0) internal successors, (2264), 8 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states 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 22:37:07,116 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 283.0) internal successors, (2264), 8 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states 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 22:37:07,116 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 84 flow. Second operand 7 states and 888 transitions. [2023-01-27 22:37:07,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 69 transitions, 318 flow [2023-01-27 22:37:07,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 69 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 22:37:07,121 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 98 flow [2023-01-27 22:37:07,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=98, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2023-01-27 22:37:07,122 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2023-01-27 22:37:07,122 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 98 flow [2023-01-27 22:37:07,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states 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 22:37:07,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:37:07,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:37:07,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 22:37:07,123 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 22:37:07,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:37:07,124 INFO L85 PathProgramCache]: Analyzing trace with hash 165954322, now seen corresponding path program 1 times [2023-01-27 22:37:07,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:37:07,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180813360] [2023-01-27 22:37:07,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:37:07,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:37:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:37:07,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:37:07,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:37:07,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180813360] [2023-01-27 22:37:07,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180813360] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:37:07,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:37:07,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 22:37:07,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968533488] [2023-01-27 22:37:07,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:37:07,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 22:37:07,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:37:07,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 22:37:07,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 22:37:07,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 283 [2023-01-27 22:37:07,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 22:37:07,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:37:07,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 283 [2023-01-27 22:37:07,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:37:07,371 INFO L130 PetriNetUnfolder]: 205/384 cut-off events. [2023-01-27 22:37:07,371 INFO L131 PetriNetUnfolder]: For 483/483 co-relation queries the response was YES. [2023-01-27 22:37:07,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 384 events. 205/384 cut-off events. For 483/483 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1426 event pairs, 87 based on Foata normal form. 14/354 useless extension candidates. Maximal degree in co-relation 662. Up to 264 conditions per place. [2023-01-27 22:37:07,374 INFO L137 encePairwiseOnDemand]: 280/283 looper letters, 28 selfloop transitions, 2 changer transitions 3/38 dead transitions. [2023-01-27 22:37:07,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 196 flow [2023-01-27 22:37:07,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 22:37:07,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 22:37:07,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2023-01-27 22:37:07,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817432273262662 [2023-01-27 22:37:07,376 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2023-01-27 22:37:07,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2023-01-27 22:37:07,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:37:07,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2023-01-27 22:37:07,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 22:37:07,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states 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 22:37:07,379 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states 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 22:37:07,379 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 98 flow. Second operand 3 states and 409 transitions. [2023-01-27 22:37:07,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 196 flow [2023-01-27 22:37:07,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 174 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-01-27 22:37:07,382 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 92 flow [2023-01-27 22:37:07,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-01-27 22:37:07,383 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-01-27 22:37:07,383 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 92 flow [2023-01-27 22:37:07,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 22:37:07,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:37:07,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:37:07,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 22:37:07,384 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 22:37:07,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:37:07,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1306821357, now seen corresponding path program 1 times [2023-01-27 22:37:07,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:37:07,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672579033] [2023-01-27 22:37:07,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:37:07,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:37:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:37:07,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:37:07,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:37:07,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672579033] [2023-01-27 22:37:07,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672579033] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:37:07,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:37:07,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 22:37:07,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040371703] [2023-01-27 22:37:07,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:37:07,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 22:37:07,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:37:07,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 22:37:07,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 22:37:07,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 283 [2023-01-27 22:37:07,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states 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 22:37:07,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:37:07,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 283 [2023-01-27 22:37:07,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:37:07,569 INFO L130 PetriNetUnfolder]: 234/450 cut-off events. [2023-01-27 22:37:07,569 INFO L131 PetriNetUnfolder]: For 294/294 co-relation queries the response was YES. [2023-01-27 22:37:07,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 450 events. 234/450 cut-off events. For 294/294 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1779 event pairs, 187 based on Foata normal form. 10/402 useless extension candidates. Maximal degree in co-relation 746. Up to 330 conditions per place. [2023-01-27 22:37:07,572 INFO L137 encePairwiseOnDemand]: 279/283 looper letters, 22 selfloop transitions, 2 changer transitions 12/41 dead transitions. [2023-01-27 22:37:07,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 197 flow [2023-01-27 22:37:07,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 22:37:07,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 22:37:07,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 508 transitions. [2023-01-27 22:37:07,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44876325088339225 [2023-01-27 22:37:07,574 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 508 transitions. [2023-01-27 22:37:07,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 508 transitions. [2023-01-27 22:37:07,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:37:07,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 508 transitions. [2023-01-27 22:37:07,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 22:37:07,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states 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 22:37:07,578 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states 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 22:37:07,578 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 92 flow. Second operand 4 states and 508 transitions. [2023-01-27 22:37:07,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 197 flow [2023-01-27 22:37:07,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 22:37:07,580 INFO L231 Difference]: Finished difference. Result has 38 places, 29 transitions, 104 flow [2023-01-27 22:37:07,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=38, PETRI_TRANSITIONS=29} [2023-01-27 22:37:07,581 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2023-01-27 22:37:07,581 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 29 transitions, 104 flow [2023-01-27 22:37:07,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states 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 22:37:07,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:37:07,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:37:07,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 22:37:07,582 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 22:37:07,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:37:07,583 INFO L85 PathProgramCache]: Analyzing trace with hash -372538144, now seen corresponding path program 1 times [2023-01-27 22:37:07,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:37:07,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429860270] [2023-01-27 22:37:07,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:37:07,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:37:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:37:08,647 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 22:37:08,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:37:08,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429860270] [2023-01-27 22:37:08,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429860270] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:37:08,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972405098] [2023-01-27 22:37:08,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:37:08,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:37:08,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:37:08,652 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 22:37:08,655 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 22:37:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:37:08,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 50 conjunts are in the unsatisfiable core [2023-01-27 22:37:08,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:37:08,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-27 22:37:09,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:37:09,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:37:09,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:37:09,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-27 22:37:09,496 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 22:37:09,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:37:09,615 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_129 (Array Int Int))) (< (+ c_~d~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_129) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))) (+ c_~W~0 1))) is different from false [2023-01-27 22:37:10,091 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:37:10,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 53 [2023-01-27 22:37:10,110 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:37:10,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 484 treesize of output 460 [2023-01-27 22:37:10,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 128 [2023-01-27 22:37:10,153 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:37:10,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 122 [2023-01-27 22:37:10,169 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:37:10,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 109 [2023-01-27 22:37:10,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-01-27 22:37:10,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972405098] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:37:10,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:37:10,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 34 [2023-01-27 22:37:10,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832212222] [2023-01-27 22:37:10,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:37:10,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-01-27 22:37:10,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:37:10,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-01-27 22:37:10,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=979, Unknown=2, NotChecked=64, Total=1190 [2023-01-27 22:37:10,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 283 [2023-01-27 22:37:10,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 104 flow. Second operand has 35 states, 35 states have (on average 73.8) internal successors, (2583), 35 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states 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 22:37:10,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:37:10,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 283 [2023-01-27 22:37:10,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:37:15,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:37:19,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:37:22,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:37:23,417 INFO L130 PetriNetUnfolder]: 1549/2684 cut-off events. [2023-01-27 22:37:23,417 INFO L131 PetriNetUnfolder]: For 1522/1522 co-relation queries the response was YES. [2023-01-27 22:37:23,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7122 conditions, 2684 events. 1549/2684 cut-off events. For 1522/1522 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 14915 event pairs, 40 based on Foata normal form. 49/2504 useless extension candidates. Maximal degree in co-relation 7105. Up to 529 conditions per place. [2023-01-27 22:37:23,430 INFO L137 encePairwiseOnDemand]: 266/283 looper letters, 296 selfloop transitions, 159 changer transitions 83/538 dead transitions. [2023-01-27 22:37:23,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 538 transitions, 2677 flow [2023-01-27 22:37:23,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-01-27 22:37:23,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2023-01-27 22:37:23,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 6151 transitions. [2023-01-27 22:37:23,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27865361964301893 [2023-01-27 22:37:23,455 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 6151 transitions. [2023-01-27 22:37:23,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 6151 transitions. [2023-01-27 22:37:23,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:37:23,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 6151 transitions. [2023-01-27 22:37:23,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 78.85897435897436) internal successors, (6151), 78 states have internal predecessors, (6151), 0 states have call successors, (0), 0 states 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 22:37:23,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 283.0) internal successors, (22357), 79 states have internal predecessors, (22357), 0 states have call successors, (0), 0 states 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 22:37:23,507 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 283.0) internal successors, (22357), 79 states have internal predecessors, (22357), 0 states have call successors, (0), 0 states 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 22:37:23,507 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 104 flow. Second operand 78 states and 6151 transitions. [2023-01-27 22:37:23,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 538 transitions, 2677 flow [2023-01-27 22:37:23,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 538 transitions, 2649 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-01-27 22:37:23,519 INFO L231 Difference]: Finished difference. Result has 160 places, 196 transitions, 1336 flow [2023-01-27 22:37:23,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=1336, PETRI_PLACES=160, PETRI_TRANSITIONS=196} [2023-01-27 22:37:23,520 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 128 predicate places. [2023-01-27 22:37:23,521 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 196 transitions, 1336 flow [2023-01-27 22:37:23,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 73.8) internal successors, (2583), 35 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states 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 22:37:23,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:37:23,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:37:23,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-27 22:37:23,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:37:23,730 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 22:37:23,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:37:23,730 INFO L85 PathProgramCache]: Analyzing trace with hash -708902324, now seen corresponding path program 2 times [2023-01-27 22:37:23,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:37:23,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818683807] [2023-01-27 22:37:23,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:37:23,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:37:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:37:24,775 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 22:37:24,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:37:24,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818683807] [2023-01-27 22:37:24,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818683807] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:37:24,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3554820] [2023-01-27 22:37:24,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:37:24,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:37:24,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:37:24,777 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 22:37:24,804 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 22:37:24,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:37:24,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:37:24,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-27 22:37:24,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:37:25,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:37:25,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-27 22:37:25,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:37:25,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-27 22:37:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:37:25,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:37:25,389 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_175 (Array Int Int))) (< (+ c_~d~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_175) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))) (+ c_~W~0 1))) is different from false [2023-01-27 22:37:25,397 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_175 (Array Int Int)) (v_ArrVal_174 (Array Int Int))) (< (+ c_~d~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_174) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_175) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))) (+ c_~W~0 1))) is different from false [2023-01-27 22:37:25,408 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:37:25,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 190 treesize of output 174 [2023-01-27 22:37:25,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2023-01-27 22:37:25,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2023-01-27 22:37:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:37:25,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3554820] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:37:25,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:37:25,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2023-01-27 22:37:25,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079064950] [2023-01-27 22:37:25,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:37:25,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-01-27 22:37:25,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:37:25,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-01-27 22:37:25,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=824, Unknown=2, NotChecked=118, Total=1056 [2023-01-27 22:37:25,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 283 [2023-01-27 22:37:25,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 196 transitions, 1336 flow. Second operand has 33 states, 33 states have (on average 76.93939393939394) internal successors, (2539), 33 states have internal predecessors, (2539), 0 states have call successors, (0), 0 states 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 22:37:25,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:37:25,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 283 [2023-01-27 22:37:25,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:37:28,877 INFO L130 PetriNetUnfolder]: 1487/2632 cut-off events. [2023-01-27 22:37:28,877 INFO L131 PetriNetUnfolder]: For 56167/56167 co-relation queries the response was YES. [2023-01-27 22:37:28,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15091 conditions, 2632 events. 1487/2632 cut-off events. For 56167/56167 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 14524 event pairs, 53 based on Foata normal form. 28/2659 useless extension candidates. Maximal degree in co-relation 14682. Up to 527 conditions per place. [2023-01-27 22:37:28,909 INFO L137 encePairwiseOnDemand]: 270/283 looper letters, 256 selfloop transitions, 167 changer transitions 43/466 dead transitions. [2023-01-27 22:37:28,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 466 transitions, 5202 flow [2023-01-27 22:37:28,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-01-27 22:37:28,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-01-27 22:37:28,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3107 transitions. [2023-01-27 22:37:28,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2889157522782221 [2023-01-27 22:37:28,918 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3107 transitions. [2023-01-27 22:37:28,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3107 transitions. [2023-01-27 22:37:28,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:37:28,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3107 transitions. [2023-01-27 22:37:28,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 81.76315789473684) internal successors, (3107), 38 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states 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 22:37:28,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 283.0) internal successors, (11037), 39 states have internal predecessors, (11037), 0 states have call successors, (0), 0 states 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 22:37:28,940 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 283.0) internal successors, (11037), 39 states have internal predecessors, (11037), 0 states have call successors, (0), 0 states 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 22:37:28,940 INFO L175 Difference]: Start difference. First operand has 160 places, 196 transitions, 1336 flow. Second operand 38 states and 3107 transitions. [2023-01-27 22:37:28,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 466 transitions, 5202 flow [2023-01-27 22:37:29,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 466 transitions, 4852 flow, removed 129 selfloop flow, removed 10 redundant places. [2023-01-27 22:37:29,028 INFO L231 Difference]: Finished difference. Result has 191 places, 251 transitions, 2115 flow [2023-01-27 22:37:29,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=2115, PETRI_PLACES=191, PETRI_TRANSITIONS=251} [2023-01-27 22:37:29,029 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 159 predicate places. [2023-01-27 22:37:29,029 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 251 transitions, 2115 flow [2023-01-27 22:37:29,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 76.93939393939394) internal successors, (2539), 33 states have internal predecessors, (2539), 0 states have call successors, (0), 0 states 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 22:37:29,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:37:29,030 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:37:29,039 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 22:37:29,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-27 22:37:29,236 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 22:37:29,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:37:29,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1109082783, now seen corresponding path program 3 times [2023-01-27 22:37:29,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:37:29,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771173845] [2023-01-27 22:37:29,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:37:29,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:37:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:37:29,348 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:37:29,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:37:29,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771173845] [2023-01-27 22:37:29,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771173845] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:37:29,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:37:29,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 22:37:29,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444647871] [2023-01-27 22:37:29,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:37:29,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 22:37:29,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:37:29,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 22:37:29,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 22:37:29,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 283 [2023-01-27 22:37:29,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 251 transitions, 2115 flow. Second operand has 4 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 0 states 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 22:37:29,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:37:29,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 283 [2023-01-27 22:37:29,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:37:30,002 INFO L130 PetriNetUnfolder]: 1821/3653 cut-off events. [2023-01-27 22:37:30,003 INFO L131 PetriNetUnfolder]: For 76448/76588 co-relation queries the response was YES. [2023-01-27 22:37:30,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22399 conditions, 3653 events. 1821/3653 cut-off events. For 76448/76588 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 24808 event pairs, 448 based on Foata normal form. 184/3742 useless extension candidates. Maximal degree in co-relation 21929. Up to 1315 conditions per place. [2023-01-27 22:37:30,064 INFO L137 encePairwiseOnDemand]: 280/283 looper letters, 239 selfloop transitions, 41 changer transitions 42/374 dead transitions. [2023-01-27 22:37:30,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 374 transitions, 3792 flow [2023-01-27 22:37:30,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 22:37:30,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 22:37:30,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 570 transitions. [2023-01-27 22:37:30,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035335689045937 [2023-01-27 22:37:30,065 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 570 transitions. [2023-01-27 22:37:30,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 570 transitions. [2023-01-27 22:37:30,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:37:30,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 570 transitions. [2023-01-27 22:37:30,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 22:37:30,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states 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 22:37:30,068 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states 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 22:37:30,068 INFO L175 Difference]: Start difference. First operand has 191 places, 251 transitions, 2115 flow. Second operand 4 states and 570 transitions. [2023-01-27 22:37:30,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 374 transitions, 3792 flow [2023-01-27 22:37:30,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 374 transitions, 3465 flow, removed 62 selfloop flow, removed 14 redundant places. [2023-01-27 22:37:30,226 INFO L231 Difference]: Finished difference. Result has 182 places, 260 transitions, 2157 flow [2023-01-27 22:37:30,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2157, PETRI_PLACES=182, PETRI_TRANSITIONS=260} [2023-01-27 22:37:30,227 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 150 predicate places. [2023-01-27 22:37:30,228 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 260 transitions, 2157 flow [2023-01-27 22:37:30,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 0 states 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 22:37:30,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:37:30,228 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:37:30,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 22:37:30,229 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 22:37:30,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:37:30,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1636994766, now seen corresponding path program 4 times [2023-01-27 22:37:30,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:37:30,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924183129] [2023-01-27 22:37:30,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:37:30,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:37:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:37:30,356 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-27 22:37:30,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:37:30,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924183129] [2023-01-27 22:37:30,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924183129] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:37:30,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799104428] [2023-01-27 22:37:30,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 22:37:30,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:37:30,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:37:30,361 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 22:37:30,364 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 22:37:30,457 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 22:37:30,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:37:30,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:37:30,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:37:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-27 22:37:30,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:37:30,592 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-27 22:37:30,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799104428] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:37:30,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:37:30,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-01-27 22:37:30,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069562546] [2023-01-27 22:37:30,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:37:30,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 22:37:30,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:37:30,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 22:37:30,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-01-27 22:37:30,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 283 [2023-01-27 22:37:30,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 260 transitions, 2157 flow. Second operand has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states 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 22:37:30,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:37:30,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 283 [2023-01-27 22:37:30,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:37:31,139 INFO L130 PetriNetUnfolder]: 1228/2634 cut-off events. [2023-01-27 22:37:31,139 INFO L131 PetriNetUnfolder]: For 52608/52707 co-relation queries the response was YES. [2023-01-27 22:37:31,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15850 conditions, 2634 events. 1228/2634 cut-off events. For 52608/52707 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 17310 event pairs, 632 based on Foata normal form. 58/2622 useless extension candidates. Maximal degree in co-relation 15790. Up to 1974 conditions per place. [2023-01-27 22:37:31,176 INFO L137 encePairwiseOnDemand]: 279/283 looper letters, 140 selfloop transitions, 3 changer transitions 36/212 dead transitions. [2023-01-27 22:37:31,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 212 transitions, 2194 flow [2023-01-27 22:37:31,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 22:37:31,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 22:37:31,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 742 transitions. [2023-01-27 22:37:31,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369846878680801 [2023-01-27 22:37:31,178 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 742 transitions. [2023-01-27 22:37:31,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 742 transitions. [2023-01-27 22:37:31,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:37:31,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 742 transitions. [2023-01-27 22:37:31,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.66666666666667) internal successors, (742), 6 states have internal predecessors, (742), 0 states have call successors, (0), 0 states 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 22:37:31,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 283.0) internal successors, (1981), 7 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states 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 22:37:31,193 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 283.0) internal successors, (1981), 7 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states 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 22:37:31,193 INFO L175 Difference]: Start difference. First operand has 182 places, 260 transitions, 2157 flow. Second operand 6 states and 742 transitions. [2023-01-27 22:37:31,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 212 transitions, 2194 flow [2023-01-27 22:37:31,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 212 transitions, 2087 flow, removed 43 selfloop flow, removed 11 redundant places. [2023-01-27 22:37:31,265 INFO L231 Difference]: Finished difference. Result has 160 places, 176 transitions, 1461 flow [2023-01-27 22:37:31,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1461, PETRI_PLACES=160, PETRI_TRANSITIONS=176} [2023-01-27 22:37:31,269 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 128 predicate places. [2023-01-27 22:37:31,269 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 176 transitions, 1461 flow [2023-01-27 22:37:31,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states 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 22:37:31,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:37:31,270 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:37:31,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 22:37:31,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:37:31,476 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 22:37:31,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:37:31,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1913761, now seen corresponding path program 5 times [2023-01-27 22:37:31,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:37:31,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35225437] [2023-01-27 22:37:31,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:37:31,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:37:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:37:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:37:32,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:37:32,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35225437] [2023-01-27 22:37:32,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35225437] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:37:32,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19404829] [2023-01-27 22:37:32,953 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 22:37:32,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:37:32,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:37:32,961 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 22:37:32,963 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 22:37:33,052 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-27 22:37:33,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:37:33,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 65 conjunts are in the unsatisfiable core [2023-01-27 22:37:33,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:37:33,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-27 22:37:33,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:37:33,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:37:33,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-01-27 22:37:33,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:37:33,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-01-27 22:37:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:37:33,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:37:34,887 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:37:34,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 91 [2023-01-27 22:37:34,911 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:37:34,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1636 treesize of output 1560 [2023-01-27 22:37:34,971 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:37:34,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 274 treesize of output 284 [2023-01-27 22:37:34,995 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:37:34,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 340 treesize of output 278 [2023-01-27 22:37:35,023 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:37:35,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 201 treesize of output 179 [2023-01-27 22:37:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:37:37,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19404829] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:37:37,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:37:37,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 48 [2023-01-27 22:37:37,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220809255] [2023-01-27 22:37:37,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:37:37,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-01-27 22:37:37,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:37:37,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-01-27 22:37:37,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=2069, Unknown=12, NotChecked=0, Total=2352 [2023-01-27 22:37:37,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 283 [2023-01-27 22:37:37,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 176 transitions, 1461 flow. Second operand has 49 states, 49 states have (on average 73.63265306122449) internal successors, (3608), 49 states have internal predecessors, (3608), 0 states have call successors, (0), 0 states 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 22:37:37,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:37:37,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 283 [2023-01-27 22:37:37,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:37:42,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:38:03,342 INFO L130 PetriNetUnfolder]: 7010/12519 cut-off events. [2023-01-27 22:38:03,342 INFO L131 PetriNetUnfolder]: For 144220/144220 co-relation queries the response was YES. [2023-01-27 22:38:03,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67808 conditions, 12519 events. 7010/12519 cut-off events. For 144220/144220 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 93109 event pairs, 314 based on Foata normal form. 175/12694 useless extension candidates. Maximal degree in co-relation 67756. Up to 2406 conditions per place. [2023-01-27 22:38:03,435 INFO L137 encePairwiseOnDemand]: 267/283 looper letters, 688 selfloop transitions, 600 changer transitions 156/1444 dead transitions. [2023-01-27 22:38:03,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 1444 transitions, 14601 flow [2023-01-27 22:38:03,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2023-01-27 22:38:03,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2023-01-27 22:38:03,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 10586 transitions. [2023-01-27 22:38:03,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2791519434628975 [2023-01-27 22:38:03,451 INFO L72 ComplementDD]: Start complementDD. Operand 134 states and 10586 transitions. [2023-01-27 22:38:03,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 134 states and 10586 transitions. [2023-01-27 22:38:03,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:38:03,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 134 states and 10586 transitions. [2023-01-27 22:38:03,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 135 states, 134 states have (on average 79.0) internal successors, (10586), 134 states have internal predecessors, (10586), 0 states have call successors, (0), 0 states 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 22:38:03,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 135 states, 135 states have (on average 283.0) internal successors, (38205), 135 states have internal predecessors, (38205), 0 states have call successors, (0), 0 states 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 22:38:03,576 INFO L81 ComplementDD]: Finished complementDD. Result has 135 states, 135 states have (on average 283.0) internal successors, (38205), 135 states have internal predecessors, (38205), 0 states have call successors, (0), 0 states 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 22:38:03,576 INFO L175 Difference]: Start difference. First operand has 160 places, 176 transitions, 1461 flow. Second operand 134 states and 10586 transitions. [2023-01-27 22:38:03,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 1444 transitions, 14601 flow [2023-01-27 22:38:03,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 1444 transitions, 14065 flow, removed 265 selfloop flow, removed 12 redundant places. [2023-01-27 22:38:03,977 INFO L231 Difference]: Finished difference. Result has 321 places, 720 transitions, 8911 flow [2023-01-27 22:38:03,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=134, PETRI_FLOW=8911, PETRI_PLACES=321, PETRI_TRANSITIONS=720} [2023-01-27 22:38:03,978 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 289 predicate places. [2023-01-27 22:38:03,978 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 720 transitions, 8911 flow [2023-01-27 22:38:03,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 73.63265306122449) internal successors, (3608), 49 states have internal predecessors, (3608), 0 states have call successors, (0), 0 states 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 22:38:03,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:38:03,979 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:38:03,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 22:38:04,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:38:04,185 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 22:38:04,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:38:04,186 INFO L85 PathProgramCache]: Analyzing trace with hash -573588561, now seen corresponding path program 6 times [2023-01-27 22:38:04,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:38:04,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135641676] [2023-01-27 22:38:04,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:38:04,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:38:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:38:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:38:06,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:38:06,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135641676] [2023-01-27 22:38:06,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135641676] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:38:06,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677264120] [2023-01-27 22:38:06,189 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 22:38:06,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:38:06,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:38:06,190 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 22:38:06,193 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 22:38:06,321 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 22:38:06,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:38:06,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 67 conjunts are in the unsatisfiable core [2023-01-27 22:38:06,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:38:06,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-01-27 22:38:06,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-27 22:38:06,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:38:06,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:38:06,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-01-27 22:38:07,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:38:07,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2023-01-27 22:38:07,403 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:38:07,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:38:07,536 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_349 (Array Int Int))) (< (+ c_~d~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_349) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))) (+ c_~W~0 1))) is different from false [2023-01-27 22:38:07,545 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_349 (Array Int Int))) (< (+ c_~d~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_349) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))) |c_thread2Thread1of1ForFork0_~temp~0#1|) (+ c_~W~0 1))) is different from false [2023-01-27 22:38:10,391 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:38:10,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 153 treesize of output 98 [2023-01-27 22:38:10,430 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:38:10,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 30648 treesize of output 27458 [2023-01-27 22:38:10,517 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:38:10,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 294 treesize of output 298 [2023-01-27 22:38:10,543 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:38:10,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 244 treesize of output 210 [2023-01-27 22:38:10,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 58 [2023-01-27 22:38:12,442 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-01-27 22:38:12,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677264120] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:38:12,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:38:12,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 48 [2023-01-27 22:38:12,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165679447] [2023-01-27 22:38:12,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:38:12,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-01-27 22:38:12,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:38:12,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-01-27 22:38:12,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1939, Unknown=10, NotChecked=182, Total=2352 [2023-01-27 22:38:12,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 283 [2023-01-27 22:38:12,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 720 transitions, 8911 flow. Second operand has 49 states, 49 states have (on average 73.61224489795919) internal successors, (3607), 49 states have internal predecessors, (3607), 0 states have call successors, (0), 0 states 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 22:38:12,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:38:12,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 283 [2023-01-27 22:38:12,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:38:18,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:38:20,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:38:23,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:38:25,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:38:31,477 WARN L222 SmtUtils]: Spent 6.16s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:38:38,430 WARN L222 SmtUtils]: Spent 6.15s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:38:43,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:38:43,225 WARN L839 $PredicateComparison]: unable to prove that (and (<= 1 |c_thread2Thread1of1ForFork0_~cond~1#1|) (<= c_~v_assert~0 1) (<= |c_thread2Thread1of1ForFork0_~cond~1#1| 1) (<= 1 c_~v_assert~0) (forall ((v_ArrVal_349 (Array Int Int))) (< (let ((.cse0 (* c_~front~0 4))) (+ c_~d~0 (select (select |c_#memory_int| c_~queue~0.base) (+ c_~queue~0.offset .cse0)) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_349) c_~queue~0.base) (+ c_~queue~0.offset .cse0 4)))) (+ c_~W~0 1)))) is different from false [2023-01-27 22:38:45,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:38:52,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:38:59,860 WARN L222 SmtUtils]: Spent 6.19s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:39:02,219 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse7 (* c_~front~0 4))) (let ((.cse2 (+ c_~queue~0.offset .cse7 4)) (.cse1 (+ c_~queue~0.offset .cse7)) (.cse3 (+ c_~W~0 1)) (.cse0 (select |c_#memory_int| c_~queue~0.base))) (and (forall ((v_ArrVal_349 (Array Int Int))) (< (+ c_~d~0 (select .cse0 .cse1) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_349) c_~queue~0.base) .cse2)) .cse3)) (let ((.cse5 (* c_~back~0 4))) (or (= (mod c_~v_assert~0 256) 0) (forall ((v_ArrVal_348 (Array Int Int)) (v_ArrVal_349 (Array Int Int))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_348))) (let ((.cse4 (select .cse6 c_~queue~0.base))) (or (not (= (select .cse4 (+ c_~queue~0.offset .cse5 4)) 1)) (< (+ c_~d~0 (select (select (store .cse6 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_349) c_~queue~0.base) .cse2) (select .cse4 .cse1)) .cse3))))) (< |c_thread1Thread1of1ForFork2_~w~0#1| 2) (<= c_~n~0 (+ c_~back~0 1)) (< c_~back~0 0) (not (= (select .cse0 (+ c_~queue~0.offset .cse5)) 1))))))) is different from false [2023-01-27 22:39:04,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:39:17,753 WARN L222 SmtUtils]: Spent 12.17s on a formula simplification. DAG size of input: 85 DAG size of output: 82 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:39:19,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:39:20,034 WARN L839 $PredicateComparison]: unable to prove that (and (< 0 (mod |c_thread2Thread1of1ForFork0_~cond~1#1| 256)) (forall ((v_ArrVal_349 (Array Int Int))) (< (+ c_~d~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_349) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))) (+ c_~W~0 1)))) is different from false [2023-01-27 22:39:28,287 WARN L222 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:39:35,359 WARN L222 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:39:41,116 WARN L222 SmtUtils]: Spent 5.26s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:39:47,416 WARN L222 SmtUtils]: Spent 6.17s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:40:02,828 WARN L222 SmtUtils]: Spent 14.18s on a formula simplification. DAG size of input: 90 DAG size of output: 87 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:40:09,704 WARN L222 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:40:20,949 WARN L222 SmtUtils]: Spent 10.95s on a formula simplification. DAG size of input: 87 DAG size of output: 84 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:40:28,264 WARN L222 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:40:36,008 WARN L222 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:40:52,902 WARN L222 SmtUtils]: Spent 12.16s on a formula simplification. DAG size of input: 86 DAG size of output: 83 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:40:59,723 WARN L222 SmtUtils]: Spent 6.16s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:41:07,883 WARN L222 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:41:16,175 WARN L222 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:41:22,915 WARN L222 SmtUtils]: Spent 6.15s on a formula simplification that was a NOOP. DAG size: 76 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:41:31,794 WARN L222 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:41:38,065 WARN L222 SmtUtils]: Spent 6.18s on a formula simplification that was a NOOP. DAG size: 68 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:41:40,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:41:49,070 WARN L222 SmtUtils]: Spent 8.14s on a formula simplification that was a NOOP. DAG size: 83 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:41:55,979 WARN L222 SmtUtils]: Spent 6.08s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:42:03,399 WARN L222 SmtUtils]: Spent 6.59s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:42:09,766 WARN L222 SmtUtils]: Spent 6.24s on a formula simplification that was a NOOP. DAG size: 80 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:42:18,814 WARN L222 SmtUtils]: Spent 8.14s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:42:37,258 WARN L222 SmtUtils]: Spent 12.32s on a formula simplification. DAG size of input: 89 DAG size of output: 86 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:42:58,137 WARN L222 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 85 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:43:08,244 INFO L130 PetriNetUnfolder]: 23558/41552 cut-off events. [2023-01-27 22:43:08,244 INFO L131 PetriNetUnfolder]: For 1788427/1788427 co-relation queries the response was YES. [2023-01-27 22:43:08,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326040 conditions, 41552 events. 23558/41552 cut-off events. For 1788427/1788427 co-relation queries the response was YES. Maximal size of possible extension queue 1288. Compared 353256 event pairs, 1349 based on Foata normal form. 619/42171 useless extension candidates. Maximal degree in co-relation 325940. Up to 8673 conditions per place. [2023-01-27 22:43:09,236 INFO L137 encePairwiseOnDemand]: 263/283 looper letters, 1536 selfloop transitions, 2114 changer transitions 977/4627 dead transitions. [2023-01-27 22:43:09,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 4627 transitions, 67789 flow [2023-01-27 22:43:09,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2023-01-27 22:43:09,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2023-01-27 22:43:09,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 17337 transitions. [2023-01-27 22:43:09,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28101598210522905 [2023-01-27 22:43:09,288 INFO L72 ComplementDD]: Start complementDD. Operand 218 states and 17337 transitions. [2023-01-27 22:43:09,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 218 states and 17337 transitions. [2023-01-27 22:43:09,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:43:09,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 218 states and 17337 transitions. [2023-01-27 22:43:09,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 219 states, 218 states have (on average 79.52752293577981) internal successors, (17337), 218 states have internal predecessors, (17337), 0 states have call successors, (0), 0 states 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 22:43:09,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 219 states, 219 states have (on average 283.0) internal successors, (61977), 219 states have internal predecessors, (61977), 0 states have call successors, (0), 0 states 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 22:43:09,396 INFO L81 ComplementDD]: Finished complementDD. Result has 219 states, 219 states have (on average 283.0) internal successors, (61977), 219 states have internal predecessors, (61977), 0 states have call successors, (0), 0 states 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 22:43:09,396 INFO L175 Difference]: Start difference. First operand has 321 places, 720 transitions, 8911 flow. Second operand 218 states and 17337 transitions. [2023-01-27 22:43:09,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 4627 transitions, 67789 flow [2023-01-27 22:43:21,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 4627 transitions, 60317 flow, removed 2561 selfloop flow, removed 16 redundant places. [2023-01-27 22:43:21,552 INFO L231 Difference]: Finished difference. Result has 630 places, 2560 transitions, 41062 flow [2023-01-27 22:43:21,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=7198, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=218, PETRI_FLOW=41062, PETRI_PLACES=630, PETRI_TRANSITIONS=2560} [2023-01-27 22:43:21,553 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 598 predicate places. [2023-01-27 22:43:21,553 INFO L495 AbstractCegarLoop]: Abstraction has has 630 places, 2560 transitions, 41062 flow [2023-01-27 22:43:21,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 73.61224489795919) internal successors, (3607), 49 states have internal predecessors, (3607), 0 states have call successors, (0), 0 states 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 22:43:21,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:43:21,554 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:43:21,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 22:43:21,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-01-27 22:43:21,755 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 22:43:21,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:43:21,755 INFO L85 PathProgramCache]: Analyzing trace with hash -2037113587, now seen corresponding path program 7 times [2023-01-27 22:43:21,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:43:21,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089392208] [2023-01-27 22:43:21,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:43:21,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:43:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:43:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:43:22,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:43:22,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089392208] [2023-01-27 22:43:22,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089392208] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:43:22,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383122745] [2023-01-27 22:43:22,875 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 22:43:22,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:43:22,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:43:22,877 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 22:43:22,881 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 22:43:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:43:22,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 55 conjunts are in the unsatisfiable core [2023-01-27 22:43:22,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:43:23,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:43:23,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-27 22:43:23,701 INFO L321 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2023-01-27 22:43:23,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 13 [2023-01-27 22:43:23,817 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:43:23,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:43:24,226 INFO L321 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-01-27 22:43:24,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 103 [2023-01-27 22:43:24,244 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:43:24,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 49 [2023-01-27 22:43:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:43:25,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383122745] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:43:25,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:43:25,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 46 [2023-01-27 22:43:25,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021809250] [2023-01-27 22:43:25,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:43:25,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-01-27 22:43:25,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:43:25,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-01-27 22:43:25,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1921, Unknown=2, NotChecked=0, Total=2162 [2023-01-27 22:43:25,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 283 [2023-01-27 22:43:25,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 2560 transitions, 41062 flow. Second operand has 47 states, 47 states have (on average 79.72340425531915) internal successors, (3747), 47 states have internal predecessors, (3747), 0 states have call successors, (0), 0 states 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 22:43:25,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:43:25,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 283 [2023-01-27 22:43:25,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:43:34,800 WARN L222 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:44:00,600 WARN L222 SmtUtils]: Spent 24.29s on a formula simplification. DAG size of input: 86 DAG size of output: 83 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:44:08,920 WARN L222 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:44:18,403 WARN L222 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:44:42,530 WARN L222 SmtUtils]: Spent 12.31s on a formula simplification. DAG size of input: 78 DAG size of output: 74 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:44:54,925 WARN L222 SmtUtils]: Spent 12.34s on a formula simplification. DAG size of input: 73 DAG size of output: 72 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:45:05,758 WARN L222 SmtUtils]: Spent 10.46s on a formula simplification. DAG size of input: 97 DAG size of output: 87 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:45:18,106 WARN L222 SmtUtils]: Spent 12.25s on a formula simplification. DAG size of input: 78 DAG size of output: 76 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:45:26,321 WARN L222 SmtUtils]: Spent 8.14s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:45:35,529 WARN L222 SmtUtils]: Spent 6.13s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:45:42,832 WARN L222 SmtUtils]: Spent 6.18s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:45:50,980 WARN L222 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:45:59,175 WARN L222 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:46:35,606 WARN L222 SmtUtils]: Spent 36.26s on a formula simplification. DAG size of input: 75 DAG size of output: 73 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:46:41,753 WARN L222 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:47:07,800 WARN L222 SmtUtils]: Spent 24.33s on a formula simplification. DAG size of input: 87 DAG size of output: 81 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:47:17,642 WARN L222 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:47:26,205 WARN L222 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:47:45,093 WARN L222 SmtUtils]: Spent 18.19s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:48:03,587 WARN L222 SmtUtils]: Spent 18.26s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:48:13,685 WARN L222 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:48:20,446 WARN L222 SmtUtils]: Spent 6.15s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:48:30,781 WARN L222 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:48:37,264 WARN L222 SmtUtils]: Spent 6.10s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:49:00,198 WARN L222 SmtUtils]: Spent 22.63s on a formula simplification. DAG size of input: 93 DAG size of output: 87 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:49:06,682 WARN L222 SmtUtils]: Spent 6.12s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:49:28,658 WARN L222 SmtUtils]: Spent 18.31s on a formula simplification that was a NOOP. DAG size: 68 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:49:37,283 WARN L222 SmtUtils]: Spent 6.15s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:49:47,496 WARN L222 SmtUtils]: Spent 8.17s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:50:02,599 WARN L222 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:50:39,797 WARN L222 SmtUtils]: Spent 12.36s on a formula simplification that was a NOOP. DAG size: 83 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-01-27 22:50:43,180 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 22:50:43,181 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 22:50:44,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 22:50:44,381 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-01-27 22:50:44,407 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 137 [2023-01-27 22:50:46,051 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 22:50:46,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 22:50:46,052 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-01-27 22:50:46,053 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 22:50:46,053 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 22:50:46,053 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 22:50:46,053 INFO L445 BasicCegarLoop]: Path program histogram: [7, 2, 1, 1] [2023-01-27 22:50:46,056 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 22:50:46,056 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 22:50:46,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 10:50:46 BasicIcfg [2023-01-27 22:50:46,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 22:50:46,059 INFO L158 Benchmark]: Toolchain (without parser) took 826011.15ms. Allocated memory was 364.9MB in the beginning and 6.7GB in the end (delta: 6.4GB). Free memory was 330.6MB in the beginning and 4.0GB in the end (delta: -3.6GB). Peak memory consumption was 3.1GB. Max. memory is 16.0GB. [2023-01-27 22:50:46,059 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 364.9MB. Free memory is still 320.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 22:50:46,059 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.41ms. Allocated memory is still 364.9MB. Free memory was 330.2MB in the beginning and 318.5MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-27 22:50:46,059 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.49ms. Allocated memory is still 364.9MB. Free memory was 318.5MB in the beginning and 316.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 22:50:46,059 INFO L158 Benchmark]: Boogie Preprocessor took 25.08ms. Allocated memory is still 364.9MB. Free memory was 316.6MB in the beginning and 314.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 22:50:46,060 INFO L158 Benchmark]: RCFGBuilder took 496.21ms. Allocated memory is still 364.9MB. Free memory was 314.9MB in the beginning and 292.6MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-01-27 22:50:46,060 INFO L158 Benchmark]: TraceAbstraction took 825154.80ms. Allocated memory was 364.9MB in the beginning and 6.7GB in the end (delta: 6.4GB). Free memory was 291.8MB in the beginning and 4.0GB in the end (delta: -3.7GB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. [2023-01-27 22:50:46,061 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 364.9MB. Free memory is still 320.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 283.41ms. Allocated memory is still 364.9MB. Free memory was 330.2MB in the beginning and 318.5MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.49ms. Allocated memory is still 364.9MB. Free memory was 318.5MB in the beginning and 316.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.08ms. Allocated memory is still 364.9MB. Free memory was 316.6MB in the beginning and 314.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 496.21ms. Allocated memory is still 364.9MB. Free memory was 314.9MB in the beginning and 292.6MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 825154.80ms. Allocated memory was 364.9MB in the beginning and 6.7GB in the end (delta: 6.4GB). Free memory was 291.8MB in the beginning and 4.0GB in the end (delta: -3.7GB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 134 PlacesBefore, 32 PlacesAfterwards, 135 TransitionsBefore, 25 TransitionsAfterwards, 1082 CoEnabledTransitionPairs, 7 FixpointIterations, 77 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 135 TotalNumberOfCompositions, 2030 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1324, independent: 1249, independent conditional: 0, independent unconditional: 1249, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 612, independent: 593, independent conditional: 0, independent unconditional: 593, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1324, independent: 656, independent conditional: 0, independent unconditional: 656, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 612, unknown conditional: 0, unknown unconditional: 612] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 50, Positive conditional cache size: 0, Positive unconditional cache size: 50, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 109]: 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: 110]: 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: 108]: 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, 165 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: 825.0s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 795.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 847 mSolverCounterUnknown, 5219 SdHoareTripleChecker+Valid, 46.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5219 mSDsluCounter, 74 SdHoareTripleChecker+Invalid, 44.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 5175 IncrementalHoareTripleChecker+Unchecked, 72 mSDsCounter, 771 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19190 IncrementalHoareTripleChecker+Invalid, 25983 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 771 mSolverCounterUnsat, 2 mSDtfsCounter, 19190 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 847 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1065 GetRequests, 205 SyntacticMatches, 29 SemanticMatches, 831 ConstructedPredicates, 8 IntricatePredicates, 4 DeprecatedPredicates, 55298 ImplicationChecksByTransitivity, 681.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41062occurred in iteration=10, InterpolantAutomatonStates: 497, 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, 0.7s SatisfiabilityAnalysisTime, 22.5s InterpolantComputationTime, 458 NumberOfCodeBlocks, 458 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 608 ConstructedInterpolants, 38 QuantifiedInterpolants, 10111 SizeOfPredicates, 152 NumberOfNonLiveVariables, 1567 ConjunctsInSsa, 273 ConjunctsInUnsatCore, 23 InterpolantComputations, 5 PerfectInterpolantSequences, 35/166 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