/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 23:24:51,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 23:24:51,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 23:24:51,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 23:24:51,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 23:24:51,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 23:24:51,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 23:24:51,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 23:24:51,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 23:24:51,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 23:24:51,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 23:24:51,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 23:24:51,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 23:24:51,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 23:24:51,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 23:24:51,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 23:24:51,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 23:24:51,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 23:24:51,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 23:24:51,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 23:24:51,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 23:24:51,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 23:24:51,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 23:24:51,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 23:24:51,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 23:24:51,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 23:24:51,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 23:24:51,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 23:24:51,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 23:24:51,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 23:24:51,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 23:24:51,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 23:24:51,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 23:24:51,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 23:24:51,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 23:24:51,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 23:24:51,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 23:24:51,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 23:24:51,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 23:24:51,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 23:24:51,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 23:24:51,416 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-NoLbe.epf [2022-09-20 23:24:51,443 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 23:24:51,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 23:24:51,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 23:24:51,445 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 23:24:51,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 23:24:51,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 23:24:51,445 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 23:24:51,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 23:24:51,446 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 23:24:51,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 23:24:51,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 23:24:51,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 23:24:51,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 23:24:51,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 23:24:51,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 23:24:51,447 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 23:24:51,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 23:24:51,447 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 23:24:51,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 23:24:51,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 23:24:51,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 23:24:51,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 23:24:51,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 23:24:51,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 23:24:51,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 23:24:51,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 23:24:51,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 23:24:51,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 23:24:51,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 23:24:51,449 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 23:24:51,449 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 23:24:51,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 23:24:51,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 23:24:51,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 23:24:51,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 23:24:51,709 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 23:24:51,710 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 23:24:51,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c [2022-09-20 23:24:51,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7da68a639/63da814d6c4a4b65bc702924bdb2b740/FLAG7c93cdb17 [2022-09-20 23:24:52,144 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 23:24:52,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c [2022-09-20 23:24:52,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7da68a639/63da814d6c4a4b65bc702924bdb2b740/FLAG7c93cdb17 [2022-09-20 23:24:52,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7da68a639/63da814d6c4a4b65bc702924bdb2b740 [2022-09-20 23:24:52,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 23:24:52,165 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 23:24:52,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 23:24:52,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 23:24:52,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 23:24:52,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 11:24:52" (1/1) ... [2022-09-20 23:24:52,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b7daa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:24:52, skipping insertion in model container [2022-09-20 23:24:52,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 11:24:52" (1/1) ... [2022-09-20 23:24:52,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 23:24:52,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 23:24:52,354 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c[2434,2447] [2022-09-20 23:24:52,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 23:24:52,366 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 23:24:52,385 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c[2434,2447] [2022-09-20 23:24:52,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 23:24:52,408 INFO L208 MainTranslator]: Completed translation [2022-09-20 23:24:52,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:24:52 WrapperNode [2022-09-20 23:24:52,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 23:24:52,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 23:24:52,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 23:24:52,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 23:24:52,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:24:52" (1/1) ... [2022-09-20 23:24:52,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:24:52" (1/1) ... [2022-09-20 23:24:52,470 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 105 [2022-09-20 23:24:52,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 23:24:52,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 23:24:52,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 23:24:52,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 23:24:52,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:24:52" (1/1) ... [2022-09-20 23:24:52,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:24:52" (1/1) ... [2022-09-20 23:24:52,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:24:52" (1/1) ... [2022-09-20 23:24:52,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:24:52" (1/1) ... [2022-09-20 23:24:52,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:24:52" (1/1) ... [2022-09-20 23:24:52,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:24:52" (1/1) ... [2022-09-20 23:24:52,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:24:52" (1/1) ... [2022-09-20 23:24:52,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 23:24:52,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 23:24:52,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 23:24:52,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 23:24:52,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:24:52" (1/1) ... [2022-09-20 23:24:52,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 23:24:52,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:24:52,577 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) [2022-09-20 23:24:52,588 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 [2022-09-20 23:24:52,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 23:24:52,622 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 23:24:52,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 23:24:52,622 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 23:24:52,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 23:24:52,622 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 23:24:52,623 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 23:24:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 23:24:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 23:24:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 23:24:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 23:24:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 23:24:52,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 23:24:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 23:24:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 23:24:52,626 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 23:24:52,716 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 23:24:52,718 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 23:24:52,965 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 23:24:52,974 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 23:24:52,975 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-20 23:24:52,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 11:24:52 BoogieIcfgContainer [2022-09-20 23:24:52,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 23:24:52,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 23:24:52,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 23:24:52,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 23:24:52,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 11:24:52" (1/3) ... [2022-09-20 23:24:52,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb67c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 11:24:52, skipping insertion in model container [2022-09-20 23:24:52,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:24:52" (2/3) ... [2022-09-20 23:24:52,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb67c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 11:24:52, skipping insertion in model container [2022-09-20 23:24:52,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 11:24:52" (3/3) ... [2022-09-20 23:24:52,984 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2022-09-20 23:24:53,000 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 23:24:53,001 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 23:24:53,001 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 23:24:53,096 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-20 23:24:53,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 184 transitions, 392 flow [2022-09-20 23:24:53,196 INFO L130 PetriNetUnfolder]: 15/181 cut-off events. [2022-09-20 23:24:53,196 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 23:24:53,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 181 events. 15/181 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 194 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 134. Up to 2 conditions per place. [2022-09-20 23:24:53,203 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 184 transitions, 392 flow [2022-09-20 23:24:53,208 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 170 transitions, 358 flow [2022-09-20 23:24:53,215 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 23:24:53,221 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;@22e5cd99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 23:24:53,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-20 23:24:53,252 INFO L130 PetriNetUnfolder]: 15/169 cut-off events. [2022-09-20 23:24:53,253 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 23:24:53,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:24:53,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:24:53,254 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)] === [2022-09-20 23:24:53,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:24:53,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1688103081, now seen corresponding path program 1 times [2022-09-20 23:24:53,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:24:53,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408420481] [2022-09-20 23:24:53,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:24:53,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:24:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:24:53,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:24:53,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:24:53,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408420481] [2022-09-20 23:24:53,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408420481] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:24:53,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:24:53,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 23:24:53,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916529991] [2022-09-20 23:24:53,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:24:53,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 23:24:53,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:24:53,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 23:24:53,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 23:24:53,472 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 184 [2022-09-20 23:24:53,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 170 transitions, 358 flow. Second operand has 2 states, 2 states have (on average 173.0) internal successors, (346), 2 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:53,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:24:53,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 184 [2022-09-20 23:24:53,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:24:53,549 INFO L130 PetriNetUnfolder]: 7/162 cut-off events. [2022-09-20 23:24:53,550 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-09-20 23:24:53,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 162 events. 7/162 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 184 event pairs, 0 based on Foata normal form. 14/165 useless extension candidates. Maximal degree in co-relation 130. Up to 7 conditions per place. [2022-09-20 23:24:53,555 INFO L137 encePairwiseOnDemand]: 176/184 looper letters, 6 selfloop transitions, 0 changer transitions 4/162 dead transitions. [2022-09-20 23:24:53,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 162 transitions, 354 flow [2022-09-20 23:24:53,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 23:24:53,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 23:24:53,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 352 transitions. [2022-09-20 23:24:53,572 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9565217391304348 [2022-09-20 23:24:53,573 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 352 transitions. [2022-09-20 23:24:53,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 352 transitions. [2022-09-20 23:24:53,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:24:53,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 352 transitions. [2022-09-20 23:24:53,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 176.0) internal successors, (352), 2 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:53,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:53,586 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:53,589 INFO L175 Difference]: Start difference. First operand has 165 places, 170 transitions, 358 flow. Second operand 2 states and 352 transitions. [2022-09-20 23:24:53,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 162 transitions, 354 flow [2022-09-20 23:24:53,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 162 transitions, 342 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 23:24:53,595 INFO L231 Difference]: Finished difference. Result has 160 places, 158 transitions, 322 flow [2022-09-20 23:24:53,597 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=322, PETRI_PLACES=160, PETRI_TRANSITIONS=158} [2022-09-20 23:24:53,601 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, -5 predicate places. [2022-09-20 23:24:53,601 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 158 transitions, 322 flow [2022-09-20 23:24:53,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 173.0) internal successors, (346), 2 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:53,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:24:53,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:24:53,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 23:24:53,602 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)] === [2022-09-20 23:24:53,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:24:53,603 INFO L85 PathProgramCache]: Analyzing trace with hash -133898889, now seen corresponding path program 1 times [2022-09-20 23:24:53,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:24:53,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609298241] [2022-09-20 23:24:53,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:24:53,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:24:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:24:54,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:24:54,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:24:54,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609298241] [2022-09-20 23:24:54,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609298241] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:24:54,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:24:54,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 23:24:54,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320318902] [2022-09-20 23:24:54,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:24:54,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 23:24:54,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:24:54,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 23:24:54,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-09-20 23:24:54,016 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 184 [2022-09-20 23:24:54,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 158 transitions, 322 flow. Second operand has 8 states, 8 states have (on average 132.5) internal successors, (1060), 8 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:54,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:24:54,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 184 [2022-09-20 23:24:54,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:24:54,250 INFO L130 PetriNetUnfolder]: 175/665 cut-off events. [2022-09-20 23:24:54,253 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-09-20 23:24:54,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920 conditions, 665 events. 175/665 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3340 event pairs, 74 based on Foata normal form. 1/527 useless extension candidates. Maximal degree in co-relation 917. Up to 225 conditions per place. [2022-09-20 23:24:54,265 INFO L137 encePairwiseOnDemand]: 174/184 looper letters, 41 selfloop transitions, 6 changer transitions 4/166 dead transitions. [2022-09-20 23:24:54,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 166 transitions, 440 flow [2022-09-20 23:24:54,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 23:24:54,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 23:24:54,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1076 transitions. [2022-09-20 23:24:54,270 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7309782608695652 [2022-09-20 23:24:54,270 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1076 transitions. [2022-09-20 23:24:54,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1076 transitions. [2022-09-20 23:24:54,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:24:54,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1076 transitions. [2022-09-20 23:24:54,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:54,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:54,280 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:54,280 INFO L175 Difference]: Start difference. First operand has 160 places, 158 transitions, 322 flow. Second operand 8 states and 1076 transitions. [2022-09-20 23:24:54,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 166 transitions, 440 flow [2022-09-20 23:24:54,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 166 transitions, 440 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 23:24:54,286 INFO L231 Difference]: Finished difference. Result has 167 places, 159 transitions, 350 flow [2022-09-20 23:24:54,286 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=350, PETRI_PLACES=167, PETRI_TRANSITIONS=159} [2022-09-20 23:24:54,287 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 2 predicate places. [2022-09-20 23:24:54,287 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 159 transitions, 350 flow [2022-09-20 23:24:54,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 132.5) internal successors, (1060), 8 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:54,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:24:54,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:24:54,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 23:24:54,289 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)] === [2022-09-20 23:24:54,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:24:54,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2104675513, now seen corresponding path program 1 times [2022-09-20 23:24:54,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:24:54,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421814252] [2022-09-20 23:24:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:24:54,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:24:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:24:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:24:54,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:24:54,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421814252] [2022-09-20 23:24:54,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421814252] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:24:54,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:24:54,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 23:24:54,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539206189] [2022-09-20 23:24:54,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:24:54,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 23:24:54,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:24:54,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 23:24:54,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-09-20 23:24:54,543 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 184 [2022-09-20 23:24:54,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 159 transitions, 350 flow. Second operand has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:54,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:24:54,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 184 [2022-09-20 23:24:54,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:24:54,832 INFO L130 PetriNetUnfolder]: 224/1098 cut-off events. [2022-09-20 23:24:54,832 INFO L131 PetriNetUnfolder]: For 45/46 co-relation queries the response was YES. [2022-09-20 23:24:54,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 1098 events. 224/1098 cut-off events. For 45/46 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7267 event pairs, 34 based on Foata normal form. 1/988 useless extension candidates. Maximal degree in co-relation 1450. Up to 149 conditions per place. [2022-09-20 23:24:54,842 INFO L137 encePairwiseOnDemand]: 175/184 looper letters, 62 selfloop transitions, 9 changer transitions 4/200 dead transitions. [2022-09-20 23:24:54,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 200 transitions, 594 flow [2022-09-20 23:24:54,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 23:24:54,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 23:24:54,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1035 transitions. [2022-09-20 23:24:54,845 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8035714285714286 [2022-09-20 23:24:54,845 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1035 transitions. [2022-09-20 23:24:54,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1035 transitions. [2022-09-20 23:24:54,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:24:54,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1035 transitions. [2022-09-20 23:24:54,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.85714285714286) internal successors, (1035), 7 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:54,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:54,851 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:54,851 INFO L175 Difference]: Start difference. First operand has 167 places, 159 transitions, 350 flow. Second operand 7 states and 1035 transitions. [2022-09-20 23:24:54,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 200 transitions, 594 flow [2022-09-20 23:24:54,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 200 transitions, 576 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-09-20 23:24:54,857 INFO L231 Difference]: Finished difference. Result has 168 places, 165 transitions, 385 flow [2022-09-20 23:24:54,857 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=385, PETRI_PLACES=168, PETRI_TRANSITIONS=165} [2022-09-20 23:24:54,859 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 3 predicate places. [2022-09-20 23:24:54,859 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 165 transitions, 385 flow [2022-09-20 23:24:54,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:54,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:24:54,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:24:54,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 23:24:54,861 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)] === [2022-09-20 23:24:54,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:24:54,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1407163391, now seen corresponding path program 1 times [2022-09-20 23:24:54,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:24:54,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850690371] [2022-09-20 23:24:54,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:24:54,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:24:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:24:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:24:54,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:24:54,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850690371] [2022-09-20 23:24:54,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850690371] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:24:54,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131031124] [2022-09-20 23:24:54,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:24:54,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:24:54,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:24:54,996 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) [2022-09-20 23:24:55,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 23:24:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:24:55,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-20 23:24:55,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:24:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:24:55,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:24:55,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:24:55,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131031124] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:24:55,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:24:55,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-09-20 23:24:55,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581416614] [2022-09-20 23:24:55,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:24:55,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 23:24:55,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:24:55,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 23:24:55,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-09-20 23:24:55,472 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 184 [2022-09-20 23:24:55,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 165 transitions, 385 flow. Second operand has 19 states, 19 states have (on average 146.73684210526315) internal successors, (2788), 19 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:55,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:24:55,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 184 [2022-09-20 23:24:55,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:24:55,865 INFO L130 PetriNetUnfolder]: 270/1248 cut-off events. [2022-09-20 23:24:55,865 INFO L131 PetriNetUnfolder]: For 81/90 co-relation queries the response was YES. [2022-09-20 23:24:55,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1824 conditions, 1248 events. 270/1248 cut-off events. For 81/90 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8280 event pairs, 103 based on Foata normal form. 0/1059 useless extension candidates. Maximal degree in co-relation 1815. Up to 188 conditions per place. [2022-09-20 23:24:55,878 INFO L137 encePairwiseOnDemand]: 171/184 looper letters, 46 selfloop transitions, 14 changer transitions 0/193 dead transitions. [2022-09-20 23:24:55,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 193 transitions, 575 flow [2022-09-20 23:24:55,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 23:24:55,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 23:24:55,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1933 transitions. [2022-09-20 23:24:55,882 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8081103678929766 [2022-09-20 23:24:55,882 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1933 transitions. [2022-09-20 23:24:55,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1933 transitions. [2022-09-20 23:24:55,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:24:55,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1933 transitions. [2022-09-20 23:24:55,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 148.69230769230768) internal successors, (1933), 13 states have internal predecessors, (1933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:55,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 184.0) internal successors, (2576), 14 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:55,892 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 184.0) internal successors, (2576), 14 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:55,892 INFO L175 Difference]: Start difference. First operand has 168 places, 165 transitions, 385 flow. Second operand 13 states and 1933 transitions. [2022-09-20 23:24:55,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 193 transitions, 575 flow [2022-09-20 23:24:55,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 193 transitions, 571 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-09-20 23:24:55,896 INFO L231 Difference]: Finished difference. Result has 182 places, 172 transitions, 457 flow [2022-09-20 23:24:55,896 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=457, PETRI_PLACES=182, PETRI_TRANSITIONS=172} [2022-09-20 23:24:55,897 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 17 predicate places. [2022-09-20 23:24:55,897 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 172 transitions, 457 flow [2022-09-20 23:24:55,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 146.73684210526315) internal successors, (2788), 19 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:55,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:24:55,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:24:55,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-20 23:24:56,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:24:56,119 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)] === [2022-09-20 23:24:56,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:24:56,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1969606319, now seen corresponding path program 1 times [2022-09-20 23:24:56,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:24:56,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082524929] [2022-09-20 23:24:56,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:24:56,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:24:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:24:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:24:56,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:24:56,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082524929] [2022-09-20 23:24:56,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082524929] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:24:56,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:24:56,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 23:24:56,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61430591] [2022-09-20 23:24:56,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:24:56,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 23:24:56,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:24:56,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 23:24:56,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 23:24:56,199 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 184 [2022-09-20 23:24:56,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 172 transitions, 457 flow. Second operand has 4 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:56,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:24:56,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 184 [2022-09-20 23:24:56,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:24:56,317 INFO L130 PetriNetUnfolder]: 106/711 cut-off events. [2022-09-20 23:24:56,318 INFO L131 PetriNetUnfolder]: For 94/116 co-relation queries the response was YES. [2022-09-20 23:24:56,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 711 events. 106/711 cut-off events. For 94/116 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3872 event pairs, 7 based on Foata normal form. 7/658 useless extension candidates. Maximal degree in co-relation 1056. Up to 104 conditions per place. [2022-09-20 23:24:56,326 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 22 selfloop transitions, 8 changer transitions 0/185 dead transitions. [2022-09-20 23:24:56,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 185 transitions, 557 flow [2022-09-20 23:24:56,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 23:24:56,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 23:24:56,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 829 transitions. [2022-09-20 23:24:56,329 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9010869565217391 [2022-09-20 23:24:56,329 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 829 transitions. [2022-09-20 23:24:56,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 829 transitions. [2022-09-20 23:24:56,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:24:56,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 829 transitions. [2022-09-20 23:24:56,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:56,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:56,333 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:56,333 INFO L175 Difference]: Start difference. First operand has 182 places, 172 transitions, 457 flow. Second operand 5 states and 829 transitions. [2022-09-20 23:24:56,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 185 transitions, 557 flow [2022-09-20 23:24:56,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 185 transitions, 542 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-09-20 23:24:56,338 INFO L231 Difference]: Finished difference. Result has 185 places, 176 transitions, 492 flow [2022-09-20 23:24:56,338 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=492, PETRI_PLACES=185, PETRI_TRANSITIONS=176} [2022-09-20 23:24:56,339 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 20 predicate places. [2022-09-20 23:24:56,339 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 176 transitions, 492 flow [2022-09-20 23:24:56,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:56,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:24:56,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:24:56,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 23:24:56,340 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)] === [2022-09-20 23:24:56,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:24:56,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1103357875, now seen corresponding path program 1 times [2022-09-20 23:24:56,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:24:56,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005538735] [2022-09-20 23:24:56,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:24:56,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:24:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:24:56,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:24:56,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:24:56,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005538735] [2022-09-20 23:24:56,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005538735] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:24:56,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:24:56,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 23:24:56,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893868728] [2022-09-20 23:24:56,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:24:56,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 23:24:56,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:24:56,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 23:24:56,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 23:24:56,387 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 184 [2022-09-20 23:24:56,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 176 transitions, 492 flow. Second operand has 4 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:56,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:24:56,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 184 [2022-09-20 23:24:56,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:24:56,548 INFO L130 PetriNetUnfolder]: 142/851 cut-off events. [2022-09-20 23:24:56,549 INFO L131 PetriNetUnfolder]: For 216/254 co-relation queries the response was YES. [2022-09-20 23:24:56,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 851 events. 142/851 cut-off events. For 216/254 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5141 event pairs, 11 based on Foata normal form. 3/792 useless extension candidates. Maximal degree in co-relation 1329. Up to 158 conditions per place. [2022-09-20 23:24:56,557 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 21 selfloop transitions, 7 changer transitions 0/188 dead transitions. [2022-09-20 23:24:56,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 188 transitions, 583 flow [2022-09-20 23:24:56,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 23:24:56,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 23:24:56,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 828 transitions. [2022-09-20 23:24:56,560 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-09-20 23:24:56,560 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 828 transitions. [2022-09-20 23:24:56,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 828 transitions. [2022-09-20 23:24:56,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:24:56,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 828 transitions. [2022-09-20 23:24:56,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:56,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:56,564 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:56,565 INFO L175 Difference]: Start difference. First operand has 185 places, 176 transitions, 492 flow. Second operand 5 states and 828 transitions. [2022-09-20 23:24:56,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 188 transitions, 583 flow [2022-09-20 23:24:56,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 188 transitions, 583 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 23:24:56,570 INFO L231 Difference]: Finished difference. Result has 192 places, 180 transitions, 536 flow [2022-09-20 23:24:56,570 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=536, PETRI_PLACES=192, PETRI_TRANSITIONS=180} [2022-09-20 23:24:56,571 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 27 predicate places. [2022-09-20 23:24:56,572 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 180 transitions, 536 flow [2022-09-20 23:24:56,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:56,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:24:56,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:24:56,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 23:24:56,573 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)] === [2022-09-20 23:24:56,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:24:56,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1233912793, now seen corresponding path program 1 times [2022-09-20 23:24:56,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:24:56,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666965046] [2022-09-20 23:24:56,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:24:56,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:24:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:24:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:24:56,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:24:56,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666965046] [2022-09-20 23:24:56,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666965046] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:24:56,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619451570] [2022-09-20 23:24:56,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:24:56,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:24:56,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:24:56,877 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) [2022-09-20 23:24:56,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 23:24:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:24:56,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjunts are in the unsatisfiable core [2022-09-20 23:24:56,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:24:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:24:57,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:24:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:24:57,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619451570] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:24:57,562 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:24:57,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2022-09-20 23:24:57,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200275073] [2022-09-20 23:24:57,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:24:57,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-09-20 23:24:57,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:24:57,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-09-20 23:24:57,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=812, Unknown=0, NotChecked=0, Total=930 [2022-09-20 23:24:57,567 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 184 [2022-09-20 23:24:57,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 180 transitions, 536 flow. Second operand has 31 states, 31 states have (on average 125.45161290322581) internal successors, (3889), 31 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:57,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:24:57,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 184 [2022-09-20 23:24:57,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:24:59,001 INFO L130 PetriNetUnfolder]: 1389/4440 cut-off events. [2022-09-20 23:24:59,001 INFO L131 PetriNetUnfolder]: For 1388/1450 co-relation queries the response was YES. [2022-09-20 23:24:59,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8834 conditions, 4440 events. 1389/4440 cut-off events. For 1388/1450 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 40359 event pairs, 871 based on Foata normal form. 33/3994 useless extension candidates. Maximal degree in co-relation 8815. Up to 1413 conditions per place. [2022-09-20 23:24:59,045 INFO L137 encePairwiseOnDemand]: 164/184 looper letters, 71 selfloop transitions, 21 changer transitions 0/216 dead transitions. [2022-09-20 23:24:59,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 216 transitions, 815 flow [2022-09-20 23:24:59,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-20 23:24:59,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-20 23:24:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2411 transitions. [2022-09-20 23:24:59,051 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6896453089244852 [2022-09-20 23:24:59,051 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2411 transitions. [2022-09-20 23:24:59,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2411 transitions. [2022-09-20 23:24:59,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:24:59,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2411 transitions. [2022-09-20 23:24:59,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 126.89473684210526) internal successors, (2411), 19 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:59,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 184.0) internal successors, (3680), 20 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:59,131 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 184.0) internal successors, (3680), 20 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:59,131 INFO L175 Difference]: Start difference. First operand has 192 places, 180 transitions, 536 flow. Second operand 19 states and 2411 transitions. [2022-09-20 23:24:59,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 216 transitions, 815 flow [2022-09-20 23:24:59,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 216 transitions, 815 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 23:24:59,143 INFO L231 Difference]: Finished difference. Result has 217 places, 187 transitions, 627 flow [2022-09-20 23:24:59,144 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=627, PETRI_PLACES=217, PETRI_TRANSITIONS=187} [2022-09-20 23:24:59,144 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 52 predicate places. [2022-09-20 23:24:59,144 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 187 transitions, 627 flow [2022-09-20 23:24:59,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 125.45161290322581) internal successors, (3889), 31 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:24:59,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:24:59,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:24:59,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-20 23:24:59,367 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,SelfDestructingSolverStorable6 [2022-09-20 23:24:59,368 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)] === [2022-09-20 23:24:59,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:24:59,368 INFO L85 PathProgramCache]: Analyzing trace with hash 979129940, now seen corresponding path program 1 times [2022-09-20 23:24:59,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:24:59,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936796302] [2022-09-20 23:24:59,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:24:59,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:24:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:24:59,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:24:59,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:24:59,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936796302] [2022-09-20 23:24:59,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936796302] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:24:59,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684675237] [2022-09-20 23:24:59,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:24:59,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:24:59,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:24:59,617 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) [2022-09-20 23:24:59,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 23:24:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:24:59,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjunts are in the unsatisfiable core [2022-09-20 23:24:59,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:25:00,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:25:00,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:25:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:25:00,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684675237] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:25:00,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:25:00,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2022-09-20 23:25:00,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279578584] [2022-09-20 23:25:00,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:25:00,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-09-20 23:25:00,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:25:00,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-09-20 23:25:00,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2022-09-20 23:25:00,354 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 184 [2022-09-20 23:25:00,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 187 transitions, 627 flow. Second operand has 31 states, 31 states have (on average 126.41935483870968) internal successors, (3919), 31 states have internal predecessors, (3919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:00,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:25:00,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 184 [2022-09-20 23:25:00,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:25:01,457 INFO L130 PetriNetUnfolder]: 1000/2883 cut-off events. [2022-09-20 23:25:01,458 INFO L131 PetriNetUnfolder]: For 1379/1436 co-relation queries the response was YES. [2022-09-20 23:25:01,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6545 conditions, 2883 events. 1000/2883 cut-off events. For 1379/1436 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 23346 event pairs, 690 based on Foata normal form. 23/2631 useless extension candidates. Maximal degree in co-relation 6518. Up to 1174 conditions per place. [2022-09-20 23:25:01,493 INFO L137 encePairwiseOnDemand]: 167/184 looper letters, 50 selfloop transitions, 13 changer transitions 21/208 dead transitions. [2022-09-20 23:25:01,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 208 transitions, 853 flow [2022-09-20 23:25:01,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 23:25:01,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 23:25:01,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2174 transitions. [2022-09-20 23:25:01,499 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6950127877237852 [2022-09-20 23:25:01,499 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2174 transitions. [2022-09-20 23:25:01,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2174 transitions. [2022-09-20 23:25:01,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:25:01,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2174 transitions. [2022-09-20 23:25:01,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 127.88235294117646) internal successors, (2174), 17 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:01,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 184.0) internal successors, (3312), 18 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:01,511 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 184.0) internal successors, (3312), 18 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:01,511 INFO L175 Difference]: Start difference. First operand has 217 places, 187 transitions, 627 flow. Second operand 17 states and 2174 transitions. [2022-09-20 23:25:01,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 208 transitions, 853 flow [2022-09-20 23:25:01,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 208 transitions, 827 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-09-20 23:25:01,524 INFO L231 Difference]: Finished difference. Result has 223 places, 177 transitions, 573 flow [2022-09-20 23:25:01,524 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=573, PETRI_PLACES=223, PETRI_TRANSITIONS=177} [2022-09-20 23:25:01,527 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 58 predicate places. [2022-09-20 23:25:01,527 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 177 transitions, 573 flow [2022-09-20 23:25:01,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 126.41935483870968) internal successors, (3919), 31 states have internal predecessors, (3919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:01,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:25:01,540 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:25:01,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-20 23:25:01,753 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 [2022-09-20 23:25:01,754 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)] === [2022-09-20 23:25:01,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:25:01,754 INFO L85 PathProgramCache]: Analyzing trace with hash 93522159, now seen corresponding path program 2 times [2022-09-20 23:25:01,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:25:01,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147282536] [2022-09-20 23:25:01,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:25:01,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:25:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:25:01,883 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:25:01,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:25:01,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147282536] [2022-09-20 23:25:01,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147282536] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:25:01,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984343936] [2022-09-20 23:25:01,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 23:25:01,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:25:01,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:25:01,886 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) [2022-09-20 23:25:01,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-20 23:25:01,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 23:25:01,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 23:25:01,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-20 23:25:01,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:25:02,204 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:25:02,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:25:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:25:02,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984343936] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 23:25:02,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 23:25:02,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11, 11] total 23 [2022-09-20 23:25:02,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017239592] [2022-09-20 23:25:02,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:25:02,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 23:25:02,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:25:02,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 23:25:02,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-09-20 23:25:02,535 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 184 [2022-09-20 23:25:02,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 177 transitions, 573 flow. Second operand has 11 states, 11 states have (on average 138.1818181818182) internal successors, (1520), 11 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:02,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:25:02,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 184 [2022-09-20 23:25:02,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:25:03,767 INFO L130 PetriNetUnfolder]: 2643/6400 cut-off events. [2022-09-20 23:25:03,768 INFO L131 PetriNetUnfolder]: For 2904/2917 co-relation queries the response was YES. [2022-09-20 23:25:03,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14736 conditions, 6400 events. 2643/6400 cut-off events. For 2904/2917 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 57710 event pairs, 617 based on Foata normal form. 13/6193 useless extension candidates. Maximal degree in co-relation 14708. Up to 1153 conditions per place. [2022-09-20 23:25:03,842 INFO L137 encePairwiseOnDemand]: 170/184 looper letters, 82 selfloop transitions, 20 changer transitions 0/234 dead transitions. [2022-09-20 23:25:03,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 234 transitions, 960 flow [2022-09-20 23:25:03,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 23:25:03,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 23:25:03,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1992 transitions. [2022-09-20 23:25:03,847 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7732919254658385 [2022-09-20 23:25:03,847 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1992 transitions. [2022-09-20 23:25:03,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1992 transitions. [2022-09-20 23:25:03,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:25:03,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1992 transitions. [2022-09-20 23:25:03,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 142.28571428571428) internal successors, (1992), 14 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:03,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 184.0) internal successors, (2760), 15 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:03,855 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 184.0) internal successors, (2760), 15 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:03,855 INFO L175 Difference]: Start difference. First operand has 223 places, 177 transitions, 573 flow. Second operand 14 states and 1992 transitions. [2022-09-20 23:25:03,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 234 transitions, 960 flow [2022-09-20 23:25:03,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 234 transitions, 886 flow, removed 23 selfloop flow, removed 19 redundant places. [2022-09-20 23:25:03,876 INFO L231 Difference]: Finished difference. Result has 210 places, 189 transitions, 636 flow [2022-09-20 23:25:03,877 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=636, PETRI_PLACES=210, PETRI_TRANSITIONS=189} [2022-09-20 23:25:03,877 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 45 predicate places. [2022-09-20 23:25:03,877 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 189 transitions, 636 flow [2022-09-20 23:25:03,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 138.1818181818182) internal successors, (1520), 11 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:03,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:25:03,878 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:25:03,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-20 23:25:04,105 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 [2022-09-20 23:25:04,105 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)] === [2022-09-20 23:25:04,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:25:04,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1337353219, now seen corresponding path program 3 times [2022-09-20 23:25:04,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:25:04,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104848111] [2022-09-20 23:25:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:25:04,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:25:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:25:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:25:04,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:25:04,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104848111] [2022-09-20 23:25:04,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104848111] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:25:04,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902965643] [2022-09-20 23:25:04,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-20 23:25:04,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:25:04,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:25:04,216 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) [2022-09-20 23:25:04,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-20 23:25:04,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-09-20 23:25:04,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 23:25:04,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 23:25:04,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:25:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-09-20 23:25:04,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:25:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-09-20 23:25:04,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902965643] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:25:04,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:25:04,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 18 [2022-09-20 23:25:04,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750901108] [2022-09-20 23:25:04,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:25:04,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 23:25:04,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:25:04,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 23:25:04,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-09-20 23:25:04,508 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 184 [2022-09-20 23:25:04,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 189 transitions, 636 flow. Second operand has 18 states, 18 states have (on average 133.77777777777777) internal successors, (2408), 18 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:04,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:25:04,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 184 [2022-09-20 23:25:04,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:25:07,705 INFO L130 PetriNetUnfolder]: 8763/20088 cut-off events. [2022-09-20 23:25:07,705 INFO L131 PetriNetUnfolder]: For 11158/11275 co-relation queries the response was YES. [2022-09-20 23:25:07,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46469 conditions, 20088 events. 8763/20088 cut-off events. For 11158/11275 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 203879 event pairs, 774 based on Foata normal form. 80/19792 useless extension candidates. Maximal degree in co-relation 46446. Up to 1539 conditions per place. [2022-09-20 23:25:08,014 INFO L137 encePairwiseOnDemand]: 165/184 looper letters, 265 selfloop transitions, 92 changer transitions 0/484 dead transitions. [2022-09-20 23:25:08,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 484 transitions, 2300 flow [2022-09-20 23:25:08,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-09-20 23:25:08,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-09-20 23:25:08,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3847 transitions. [2022-09-20 23:25:08,022 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7743558776167472 [2022-09-20 23:25:08,023 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3847 transitions. [2022-09-20 23:25:08,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3847 transitions. [2022-09-20 23:25:08,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:25:08,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3847 transitions. [2022-09-20 23:25:08,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 142.4814814814815) internal successors, (3847), 27 states have internal predecessors, (3847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:08,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 184.0) internal successors, (5152), 28 states have internal predecessors, (5152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:08,039 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 184.0) internal successors, (5152), 28 states have internal predecessors, (5152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:08,039 INFO L175 Difference]: Start difference. First operand has 210 places, 189 transitions, 636 flow. Second operand 27 states and 3847 transitions. [2022-09-20 23:25:08,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 484 transitions, 2300 flow [2022-09-20 23:25:08,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 484 transitions, 2287 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-09-20 23:25:08,176 INFO L231 Difference]: Finished difference. Result has 248 places, 270 transitions, 1403 flow [2022-09-20 23:25:08,176 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1403, PETRI_PLACES=248, PETRI_TRANSITIONS=270} [2022-09-20 23:25:08,177 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 83 predicate places. [2022-09-20 23:25:08,177 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 270 transitions, 1403 flow [2022-09-20 23:25:08,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 133.77777777777777) internal successors, (2408), 18 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:08,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:25:08,178 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:25:08,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-09-20 23:25:08,391 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 [2022-09-20 23:25:08,391 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)] === [2022-09-20 23:25:08,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:25:08,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2278047, now seen corresponding path program 4 times [2022-09-20 23:25:08,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:25:08,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328517332] [2022-09-20 23:25:08,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:25:08,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:25:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:25:08,503 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:25:08,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:25:08,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328517332] [2022-09-20 23:25:08,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328517332] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:25:08,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257561312] [2022-09-20 23:25:08,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-20 23:25:08,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:25:08,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:25:08,505 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) [2022-09-20 23:25:08,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-20 23:25:08,589 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-20 23:25:08,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 23:25:08,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-20 23:25:08,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:25:08,744 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:25:08,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:25:08,973 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:25:08,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257561312] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 23:25:08,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 23:25:08,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11, 11] total 23 [2022-09-20 23:25:08,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336023179] [2022-09-20 23:25:08,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:25:08,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 23:25:08,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:25:08,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 23:25:08,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-09-20 23:25:08,976 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 184 [2022-09-20 23:25:08,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 270 transitions, 1403 flow. Second operand has 11 states, 11 states have (on average 138.1818181818182) internal successors, (1520), 11 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:08,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:25:08,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 184 [2022-09-20 23:25:08,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:25:10,985 INFO L130 PetriNetUnfolder]: 4861/12281 cut-off events. [2022-09-20 23:25:10,985 INFO L131 PetriNetUnfolder]: For 37086/38000 co-relation queries the response was YES. [2022-09-20 23:25:11,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37248 conditions, 12281 events. 4861/12281 cut-off events. For 37086/38000 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 121175 event pairs, 1029 based on Foata normal form. 83/12004 useless extension candidates. Maximal degree in co-relation 37207. Up to 2992 conditions per place. [2022-09-20 23:25:11,221 INFO L137 encePairwiseOnDemand]: 169/184 looper letters, 110 selfloop transitions, 94 changer transitions 0/353 dead transitions. [2022-09-20 23:25:11,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 353 transitions, 2460 flow [2022-09-20 23:25:11,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 23:25:11,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 23:25:11,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1982 transitions. [2022-09-20 23:25:11,228 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7694099378881988 [2022-09-20 23:25:11,228 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1982 transitions. [2022-09-20 23:25:11,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1982 transitions. [2022-09-20 23:25:11,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:25:11,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1982 transitions. [2022-09-20 23:25:11,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 141.57142857142858) internal successors, (1982), 14 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:11,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 184.0) internal successors, (2760), 15 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:11,237 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 184.0) internal successors, (2760), 15 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:11,238 INFO L175 Difference]: Start difference. First operand has 248 places, 270 transitions, 1403 flow. Second operand 14 states and 1982 transitions. [2022-09-20 23:25:11,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 353 transitions, 2460 flow [2022-09-20 23:25:11,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 353 transitions, 2411 flow, removed 16 selfloop flow, removed 9 redundant places. [2022-09-20 23:25:11,412 INFO L231 Difference]: Finished difference. Result has 258 places, 305 transitions, 2045 flow [2022-09-20 23:25:11,413 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=1370, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2045, PETRI_PLACES=258, PETRI_TRANSITIONS=305} [2022-09-20 23:25:11,413 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 93 predicate places. [2022-09-20 23:25:11,413 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 305 transitions, 2045 flow [2022-09-20 23:25:11,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 138.1818181818182) internal successors, (1520), 11 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:11,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:25:11,414 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:25:11,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-20 23:25:11,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:25:11,628 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:25:11,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:25:11,628 INFO L85 PathProgramCache]: Analyzing trace with hash 913773429, now seen corresponding path program 5 times [2022-09-20 23:25:11,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:25:11,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814549693] [2022-09-20 23:25:11,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:25:11,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:25:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:25:11,728 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:25:11,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:25:11,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814549693] [2022-09-20 23:25:11,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814549693] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:25:11,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169578760] [2022-09-20 23:25:11,729 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-20 23:25:11,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:25:11,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:25:11,730 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:25:11,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-20 23:25:11,822 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-09-20 23:25:11,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 23:25:11,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 23:25:11,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:25:11,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-09-20 23:25:11,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 23:25:11,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169578760] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:25:11,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 23:25:11,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 15 [2022-09-20 23:25:11,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935571109] [2022-09-20 23:25:11,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:25:11,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 23:25:11,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:25:11,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 23:25:11,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-09-20 23:25:11,892 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 184 [2022-09-20 23:25:11,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 305 transitions, 2045 flow. Second operand has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:11,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:25:11,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 184 [2022-09-20 23:25:11,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:25:16,931 INFO L130 PetriNetUnfolder]: 13034/29583 cut-off events. [2022-09-20 23:25:16,931 INFO L131 PetriNetUnfolder]: For 109224/109421 co-relation queries the response was YES. [2022-09-20 23:25:17,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94031 conditions, 29583 events. 13034/29583 cut-off events. For 109224/109421 co-relation queries the response was YES. Maximal size of possible extension queue 1057. Compared 318531 event pairs, 3662 based on Foata normal form. 167/28529 useless extension candidates. Maximal degree in co-relation 93986. Up to 5318 conditions per place. [2022-09-20 23:25:17,338 INFO L137 encePairwiseOnDemand]: 174/184 looper letters, 417 selfloop transitions, 82 changer transitions 0/644 dead transitions. [2022-09-20 23:25:17,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 644 transitions, 6172 flow [2022-09-20 23:25:17,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 23:25:17,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 23:25:17,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1753 transitions. [2022-09-20 23:25:17,341 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.866106719367589 [2022-09-20 23:25:17,341 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1753 transitions. [2022-09-20 23:25:17,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1753 transitions. [2022-09-20 23:25:17,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:25:17,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1753 transitions. [2022-09-20 23:25:17,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 159.36363636363637) internal successors, (1753), 11 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:17,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 184.0) internal successors, (2208), 12 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:17,347 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 184.0) internal successors, (2208), 12 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:17,347 INFO L175 Difference]: Start difference. First operand has 258 places, 305 transitions, 2045 flow. Second operand 11 states and 1753 transitions. [2022-09-20 23:25:17,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 644 transitions, 6172 flow [2022-09-20 23:25:18,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 644 transitions, 6135 flow, removed 12 selfloop flow, removed 7 redundant places. [2022-09-20 23:25:18,392 INFO L231 Difference]: Finished difference. Result has 270 places, 360 transitions, 3042 flow [2022-09-20 23:25:18,392 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=2028, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3042, PETRI_PLACES=270, PETRI_TRANSITIONS=360} [2022-09-20 23:25:18,393 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 105 predicate places. [2022-09-20 23:25:18,393 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 360 transitions, 3042 flow [2022-09-20 23:25:18,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:18,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:25:18,394 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:25:18,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-20 23:25:18,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:25:18,607 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:25:18,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:25:18,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1784175495, now seen corresponding path program 6 times [2022-09-20 23:25:18,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:25:18,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983723832] [2022-09-20 23:25:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:25:18,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:25:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:25:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:25:18,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:25:18,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983723832] [2022-09-20 23:25:18,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983723832] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:25:18,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713730737] [2022-09-20 23:25:18,710 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-09-20 23:25:18,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:25:18,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:25:18,712 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:25:18,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-20 23:25:18,793 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-09-20 23:25:18,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 23:25:18,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-20 23:25:18,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:25:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:25:18,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:25:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:25:19,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713730737] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 23:25:19,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 23:25:19,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11, 11] total 24 [2022-09-20 23:25:19,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087472678] [2022-09-20 23:25:19,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:25:19,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 23:25:19,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:25:19,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 23:25:19,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-09-20 23:25:19,164 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 184 [2022-09-20 23:25:19,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 360 transitions, 3042 flow. Second operand has 11 states, 11 states have (on average 138.1818181818182) internal successors, (1520), 11 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:19,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:25:19,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 184 [2022-09-20 23:25:19,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:25:22,875 INFO L130 PetriNetUnfolder]: 7380/19587 cut-off events. [2022-09-20 23:25:22,875 INFO L131 PetriNetUnfolder]: For 93829/96250 co-relation queries the response was YES. [2022-09-20 23:25:23,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67479 conditions, 19587 events. 7380/19587 cut-off events. For 93829/96250 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 217917 event pairs, 1483 based on Foata normal form. 296/19204 useless extension candidates. Maximal degree in co-relation 67425. Up to 6457 conditions per place. [2022-09-20 23:25:23,151 INFO L137 encePairwiseOnDemand]: 168/184 looper letters, 180 selfloop transitions, 128 changer transitions 0/464 dead transitions. [2022-09-20 23:25:23,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 464 transitions, 4752 flow [2022-09-20 23:25:23,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 23:25:23,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 23:25:23,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1851 transitions. [2022-09-20 23:25:23,154 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7738294314381271 [2022-09-20 23:25:23,154 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1851 transitions. [2022-09-20 23:25:23,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1851 transitions. [2022-09-20 23:25:23,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:25:23,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1851 transitions. [2022-09-20 23:25:23,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 142.3846153846154) internal successors, (1851), 13 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:23,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 184.0) internal successors, (2576), 14 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:23,160 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 184.0) internal successors, (2576), 14 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:23,160 INFO L175 Difference]: Start difference. First operand has 270 places, 360 transitions, 3042 flow. Second operand 13 states and 1851 transitions. [2022-09-20 23:25:23,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 464 transitions, 4752 flow [2022-09-20 23:25:23,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 464 transitions, 4737 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-09-20 23:25:23,854 INFO L231 Difference]: Finished difference. Result has 285 places, 398 transitions, 4020 flow [2022-09-20 23:25:23,855 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4020, PETRI_PLACES=285, PETRI_TRANSITIONS=398} [2022-09-20 23:25:23,855 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 120 predicate places. [2022-09-20 23:25:23,855 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 398 transitions, 4020 flow [2022-09-20 23:25:23,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 138.1818181818182) internal successors, (1520), 11 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:23,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:25:23,856 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:25:23,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-20 23:25:24,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-09-20 23:25:24,057 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:25:24,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:25:24,057 INFO L85 PathProgramCache]: Analyzing trace with hash 950571655, now seen corresponding path program 7 times [2022-09-20 23:25:24,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:25:24,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859670740] [2022-09-20 23:25:24,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:25:24,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:25:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:25:24,154 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:25:24,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:25:24,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859670740] [2022-09-20 23:25:24,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859670740] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:25:24,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146737045] [2022-09-20 23:25:24,154 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-09-20 23:25:24,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:25:24,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:25:24,156 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:25:24,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-20 23:25:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:25:24,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-20 23:25:24,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:25:24,413 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:25:24,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:25:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:25:24,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146737045] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 23:25:24,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 23:25:24,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11, 11] total 24 [2022-09-20 23:25:24,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992262669] [2022-09-20 23:25:24,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:25:24,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 23:25:24,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:25:24,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 23:25:24,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2022-09-20 23:25:24,609 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 184 [2022-09-20 23:25:24,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 398 transitions, 4020 flow. Second operand has 11 states, 11 states have (on average 138.1818181818182) internal successors, (1520), 11 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:24,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:25:24,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 184 [2022-09-20 23:25:24,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:25:28,294 INFO L130 PetriNetUnfolder]: 7475/19420 cut-off events. [2022-09-20 23:25:28,294 INFO L131 PetriNetUnfolder]: For 110638/112971 co-relation queries the response was YES. [2022-09-20 23:25:28,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70787 conditions, 19420 events. 7475/19420 cut-off events. For 110638/112971 co-relation queries the response was YES. Maximal size of possible extension queue 757. Compared 212751 event pairs, 1330 based on Foata normal form. 286/19036 useless extension candidates. Maximal degree in co-relation 70729. Up to 4415 conditions per place. [2022-09-20 23:25:28,601 INFO L137 encePairwiseOnDemand]: 168/184 looper letters, 153 selfloop transitions, 160 changer transitions 0/469 dead transitions. [2022-09-20 23:25:28,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 469 transitions, 5207 flow [2022-09-20 23:25:28,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 23:25:28,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 23:25:28,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2003 transitions. [2022-09-20 23:25:28,604 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7775621118012422 [2022-09-20 23:25:28,604 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2003 transitions. [2022-09-20 23:25:28,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2003 transitions. [2022-09-20 23:25:28,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:25:28,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2003 transitions. [2022-09-20 23:25:28,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 143.07142857142858) internal successors, (2003), 14 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:28,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 184.0) internal successors, (2760), 15 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:28,611 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 184.0) internal successors, (2760), 15 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:28,611 INFO L175 Difference]: Start difference. First operand has 285 places, 398 transitions, 4020 flow. Second operand 14 states and 2003 transitions. [2022-09-20 23:25:28,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 469 transitions, 5207 flow [2022-09-20 23:25:29,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 469 transitions, 5082 flow, removed 8 selfloop flow, removed 9 redundant places. [2022-09-20 23:25:29,387 INFO L231 Difference]: Finished difference. Result has 292 places, 402 transitions, 4465 flow [2022-09-20 23:25:29,387 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=3895, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4465, PETRI_PLACES=292, PETRI_TRANSITIONS=402} [2022-09-20 23:25:29,388 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 127 predicate places. [2022-09-20 23:25:29,388 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 402 transitions, 4465 flow [2022-09-20 23:25:29,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 138.1818181818182) internal successors, (1520), 11 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:29,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:25:29,388 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:25:29,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-20 23:25:29,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-09-20 23:25:29,595 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:25:29,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:25:29,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1543694477, now seen corresponding path program 8 times [2022-09-20 23:25:29,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:25:29,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648211453] [2022-09-20 23:25:29,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:25:29,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:25:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:25:29,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:25:29,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:25:29,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648211453] [2022-09-20 23:25:29,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648211453] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:25:29,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778765539] [2022-09-20 23:25:29,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 23:25:29,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:25:29,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:25:29,704 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:25:29,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-20 23:25:29,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 23:25:29,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 23:25:29,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 23:25:29,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:25:29,891 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-09-20 23:25:29,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:25:29,966 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-09-20 23:25:29,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778765539] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:25:29,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:25:29,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 18 [2022-09-20 23:25:29,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118943732] [2022-09-20 23:25:29,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:25:29,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 23:25:29,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:25:29,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 23:25:29,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-09-20 23:25:29,969 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 184 [2022-09-20 23:25:29,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 402 transitions, 4465 flow. Second operand has 18 states, 18 states have (on average 133.61111111111111) internal successors, (2405), 18 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:29,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:25:29,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 184 [2022-09-20 23:25:29,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:25:39,386 INFO L130 PetriNetUnfolder]: 18417/43732 cut-off events. [2022-09-20 23:25:39,387 INFO L131 PetriNetUnfolder]: For 258005/258532 co-relation queries the response was YES. [2022-09-20 23:25:39,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161069 conditions, 43732 events. 18417/43732 cut-off events. For 258005/258532 co-relation queries the response was YES. Maximal size of possible extension queue 1505. Compared 514561 event pairs, 1632 based on Foata normal form. 285/42900 useless extension candidates. Maximal degree in co-relation 161009. Up to 3042 conditions per place. [2022-09-20 23:25:40,237 INFO L137 encePairwiseOnDemand]: 165/184 looper letters, 371 selfloop transitions, 362 changer transitions 0/860 dead transitions. [2022-09-20 23:25:40,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 860 transitions, 9678 flow [2022-09-20 23:25:40,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-09-20 23:25:40,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-09-20 23:25:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5274 transitions. [2022-09-20 23:25:40,243 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7746768507638073 [2022-09-20 23:25:40,243 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5274 transitions. [2022-09-20 23:25:40,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5274 transitions. [2022-09-20 23:25:40,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:25:40,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5274 transitions. [2022-09-20 23:25:40,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 142.54054054054055) internal successors, (5274), 37 states have internal predecessors, (5274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:40,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 184.0) internal successors, (6992), 38 states have internal predecessors, (6992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:40,417 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 184.0) internal successors, (6992), 38 states have internal predecessors, (6992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:40,417 INFO L175 Difference]: Start difference. First operand has 292 places, 402 transitions, 4465 flow. Second operand 37 states and 5274 transitions. [2022-09-20 23:25:40,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 860 transitions, 9678 flow [2022-09-20 23:25:43,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 860 transitions, 9514 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-09-20 23:25:43,283 INFO L231 Difference]: Finished difference. Result has 329 places, 560 transitions, 7527 flow [2022-09-20 23:25:43,284 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=4361, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7527, PETRI_PLACES=329, PETRI_TRANSITIONS=560} [2022-09-20 23:25:43,284 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 164 predicate places. [2022-09-20 23:25:43,284 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 560 transitions, 7527 flow [2022-09-20 23:25:43,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 133.61111111111111) internal successors, (2405), 18 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:43,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:25:43,285 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:25:43,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-09-20 23:25:43,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-20 23:25:43,499 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:25:43,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:25:43,500 INFO L85 PathProgramCache]: Analyzing trace with hash -222026217, now seen corresponding path program 2 times [2022-09-20 23:25:43,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:25:43,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724554754] [2022-09-20 23:25:43,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:25:43,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:25:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:25:43,585 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:25:43,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:25:43,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724554754] [2022-09-20 23:25:43,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724554754] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:25:43,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184762868] [2022-09-20 23:25:43,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 23:25:43,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:25:43,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:25:43,587 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:25:43,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-20 23:25:43,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 23:25:43,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 23:25:43,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-20 23:25:43,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:25:43,822 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:25:43,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:25:43,996 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:25:43,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184762868] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 23:25:43,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 23:25:43,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2022-09-20 23:25:43,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558998658] [2022-09-20 23:25:43,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:25:43,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 23:25:43,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:25:43,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 23:25:43,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-09-20 23:25:43,999 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 184 [2022-09-20 23:25:44,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 560 transitions, 7527 flow. Second operand has 9 states, 9 states have (on average 147.33333333333334) internal successors, (1326), 9 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:44,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:25:44,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 184 [2022-09-20 23:25:44,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:25:45,580 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([446] L47-3-->L47-4: Formula: (= v_thread1Thread1of1ForFork1_~i~0_13 (+ |v_thread1Thread1of1ForFork1_#t~post1_3| 1)) InVars {thread1Thread1of1ForFork1_#t~post1=|v_thread1Thread1of1ForFork1_#t~post1_3|} OutVars{thread1Thread1of1ForFork1_~i~0=v_thread1Thread1of1ForFork1_~i~0_13, thread1Thread1of1ForFork1_#t~post1=|v_thread1Thread1of1ForFork1_#t~post1_3|} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_~i~0][360], [Black: 6525#(and (or (<= (+ 2 thread3Thread1of1ForFork0_~i~2) ~N~0) (< thread2Thread1of1ForFork2_~i~1 ~M~0)) (<= 2 ~N~0) (or (<= (+ 2 thread3Thread1of1ForFork0_~i~2) ~N~0) (< 0 ~M~0))), Black: 6527#(and (<= (+ 2 thread3Thread1of1ForFork0_~i~2) ~N~0) (<= 2 ~N~0)), Black: 6523#(and (<= 2 ~N~0) (or (<= (+ 2 thread3Thread1of1ForFork0_~i~2) ~N~0) (< 0 ~M~0))), 32#L86-4true, Black: 1029#(and (= (+ (- 1) ~sorted3~0) 0) |thread3Thread1of1ForFork0_#t~short12|), Black: 5249#(and (<= 2 ~N~0) (<= 1 ~M~0)), Black: 1026#(= (+ (- 1) ~sorted3~0) 0), Black: 5253#(and (< thread2Thread1of1ForFork2_~i~1 ~M~0) (<= 2 ~N~0) (<= 1 ~M~0)), Black: 5251#(and (< thread2Thread1of1ForFork2_~i~1 ~M~0) (<= 2 ~N~0) (or (< (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= 1 ~M~0))), Black: 5247#(and (<= 2 ~N~0) (or (< (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= 1 ~M~0))), Black: 4426#(<= 2 ~N~0), 155#L47-4true, 46#L56true, 204#true, 6521#(and (or (<= (+ 2 thread3Thread1of1ForFork0_~i~2) ~N~0) (< thread2Thread1of1ForFork2_~i~1 ~M~0)) (<= 2 ~N~0)), 1024#true, 83#L63-6true, 1838#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 1014#true, 182#true, Black: 4385#(and (<= thread3Thread1of1ForFork0_~i~2 ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (= thread2Thread1of1ForFork2_~i~1 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0)) (<= 1 ~M~0)), Black: 4389#(and (<= thread3Thread1of1ForFork0_~i~2 ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0) (= thread2Thread1of1ForFork2_~i~1 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0)) (<= 1 ~M~0)), Black: 4383#(and (or (< thread2Thread1of1ForFork2_~i~1 ~M~0) (< (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0)) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), Black: 4372#(and (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (= thread2Thread1of1ForFork2_~i~1 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0)) (<= 1 ~M~0)), Black: 5676#(and (<= 2 ~N~0) (<= thread2Thread1of1ForFork2_~i~1 0) (<= 0 thread1Thread1of1ForFork1_~i~0)), Black: 5673#(and (<= 2 ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0)), Black: 4374#(and (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0) (= thread2Thread1of1ForFork2_~i~1 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0)) (<= 1 ~M~0)), Black: 5554#(<= 0 thread1Thread1of1ForFork1_~i~0), Black: 4361#(and (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), Black: 5683#(and (<= thread3Thread1of1ForFork0_~i~2 ~M~0) (<= 2 ~N~0) (<= thread2Thread1of1ForFork2_~i~1 0) (<= thread3Thread1of1ForFork0_~i~2 0)), Black: 4377#(and (<= thread3Thread1of1ForFork0_~i~2 ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (= thread2Thread1of1ForFork2_~i~1 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), Black: 4393#(and (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= (+ 2 thread3Thread1of1ForFork0_~i~2) (+ ~N~0 ~M~0)) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (= thread2Thread1of1ForFork2_~i~1 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0)) (<= 1 ~M~0)), Black: 4379#(and (or (< thread2Thread1of1ForFork2_~i~1 ~M~0) (< (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0)) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), Black: 5679#(and (<= thread3Thread1of1ForFork0_~i~2 ~M~0) (<= 2 ~N~0) (<= thread2Thread1of1ForFork2_~i~1 0) (<= 0 thread1Thread1of1ForFork1_~i~0)), Black: 4368#(and (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (= thread2Thread1of1ForFork2_~i~1 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), Black: 5589#(and (<= thread3Thread1of1ForFork0_~i~2 ~M~0) (<= 2 ~N~0) (<= thread2Thread1of1ForFork2_~i~1 0)), Black: 4381#(and (<= thread3Thread1of1ForFork0_~i~2 ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0) (= thread2Thread1of1ForFork2_~i~1 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), Black: 5681#(and (<= thread3Thread1of1ForFork0_~i~2 ~M~0) (<= 2 ~N~0) (<= thread2Thread1of1ForFork2_~i~1 0) (<= 0 thread1Thread1of1ForFork1_~i~0) (<= thread3Thread1of1ForFork0_~i~2 0)), Black: 4365#(and (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), Black: 5585#(and (<= 2 ~N~0) (<= thread2Thread1of1ForFork2_~i~1 0)), Black: 8215#(and (or (< thread2Thread1of1ForFork2_~i~1 ~M~0) (< (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0)) (<= thread3Thread1of1ForFork0_~i~2 ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), Black: 4387#(and (or (< thread2Thread1of1ForFork2_~i~1 ~M~0) (< (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0)) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (= thread2Thread1of1ForFork2_~i~1 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), Black: 8211#(and (or (< thread2Thread1of1ForFork2_~i~1 ~M~0) (< (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0)) (<= thread3Thread1of1ForFork0_~i~2 ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), 8270#(<= 2 ~N~0), Black: 4395#(and (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= (+ 2 thread3Thread1of1ForFork0_~i~2) (+ ~N~0 ~M~0)) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0) (= thread2Thread1of1ForFork2_~i~1 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0)) (<= 1 ~M~0)), Black: 8213#(and (<= thread3Thread1of1ForFork0_~i~2 ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0) (= thread2Thread1of1ForFork2_~i~1 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), Black: 4391#(and (or (< thread2Thread1of1ForFork2_~i~1 ~M~0) (< (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0)) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0) (= thread2Thread1of1ForFork2_~i~1 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), 4397#(and (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (< thread2Thread1of1ForFork2_~i~1 ~M~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), Black: 8209#(and (<= thread3Thread1of1ForFork0_~i~2 ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (= thread2Thread1of1ForFork2_~i~1 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), Black: 4399#(and (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (< thread2Thread1of1ForFork2_~i~1 ~M~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), Black: 4370#(and (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0) (= thread2Thread1of1ForFork2_~i~1 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), Black: 8223#(and (<= thread3Thread1of1ForFork0_~i~2 ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0) (= thread2Thread1of1ForFork2_~i~1 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0)) (<= 1 ~M~0)), Black: 8203#(and (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (< thread2Thread1of1ForFork2_~i~1 ~M~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), Black: 8207#(and (<= thread3Thread1of1ForFork0_~i~2 ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), Black: 8205#(and (<= thread3Thread1of1ForFork0_~i~2 ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), Black: 8219#(and (<= thread3Thread1of1ForFork0_~i~2 ~M~0) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (= thread2Thread1of1ForFork2_~i~1 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0)) (<= 1 ~M~0)), Black: 7366#(and (<= (+ 2 thread3Thread1of1ForFork0_~i~2) ~N~0) (< (+ thread2Thread1of1ForFork2_~i~1 1) ~N~0) (<= 2 ~N~0)), Black: 7360#(and (< (+ thread2Thread1of1ForFork2_~i~1 1) ~N~0) (<= 2 ~N~0)), Black: 7362#(and (or (<= (+ 2 thread3Thread1of1ForFork0_~i~2) ~N~0) (< thread2Thread1of1ForFork2_~i~1 ~M~0)) (< (+ thread2Thread1of1ForFork2_~i~1 1) ~N~0) (<= 2 ~N~0)), 7368#(and (or (<= (+ 2 thread3Thread1of1ForFork0_~i~2) ~N~0) (< thread2Thread1of1ForFork2_~i~1 ~M~0)) (<= 2 ~N~0)), Black: 3523#(and (or (< |ULTIMATE.start_create_fresh_int_array_~size#1| 2) (<= 2 ~N~0)) (or (not (< |ULTIMATE.start_create_fresh_int_array_~i~3#1| |ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 2 ~N~0)) (or (< |ULTIMATE.start_create_fresh_int_array_#in~size#1| 2) (<= 2 ~N~0))), Black: 3525#(and (< (+ thread2Thread1of1ForFork2_~i~1 1) ~N~0) (<= 2 ~N~0)), Black: 3531#(and (<= (+ 2 thread3Thread1of1ForFork0_~i~2) ~N~0) (< (+ thread2Thread1of1ForFork2_~i~1 1) ~N~0) (<= 2 ~N~0) (<= (+ 2 ~M~0) ~N~0)), Black: 3533#(and (<= (+ 2 thread3Thread1of1ForFork0_~i~2) ~N~0) (< (+ thread2Thread1of1ForFork2_~i~1 1) ~N~0) (<= 2 ~N~0)), Black: 3527#(and (< (+ thread2Thread1of1ForFork2_~i~1 1) ~N~0) (<= 2 ~N~0) (<= (+ 2 ~M~0) ~N~0)), Black: 208#(and (= (+ (- 1) ~sorted3~0) 0) (= 0 (+ (- 1) ~sorted2~0)) (= (+ (- 1) ~sorted1~0) 0)), Black: 207#(and (= 0 (+ (- 1) ~sorted2~0)) (= (+ (- 1) ~sorted1~0) 0)), 5268#(<= 2 ~N~0), 990#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), Black: 996#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 1) (= |ULTIMATE.start_create_fresh_int_array_#t~post26#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 5245#(and (< thread2Thread1of1ForFork2_~i~1 ~M~0) (<= 2 ~N~0)), 2695#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (not (< (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0)) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), Black: 992#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 8201#(and (<= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (< thread2Thread1of1ForFork2_~i~1 ~M~0) (<= 2 ~N~0) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~N~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| ~N~0))), Black: 1016#(= 0 (+ (- 1) ~sorted2~0)), Black: 1019#(and (= 0 (+ (- 1) ~sorted2~0)) |thread2Thread1of1ForFork2_#t~short8|)]) [2022-09-20 23:25:45,580 INFO L383 tUnfolder$Statistics]: this new event has 133 ancestors and is not cut-off event [2022-09-20 23:25:45,581 INFO L386 tUnfolder$Statistics]: existing Event has 133 ancestors and is not cut-off event [2022-09-20 23:25:45,581 INFO L386 tUnfolder$Statistics]: existing Event has 136 ancestors and is not cut-off event [2022-09-20 23:25:45,581 INFO L386 tUnfolder$Statistics]: existing Event has 133 ancestors and is not cut-off event [2022-09-20 23:25:45,994 INFO L130 PetriNetUnfolder]: 2651/10220 cut-off events. [2022-09-20 23:25:45,995 INFO L131 PetriNetUnfolder]: For 92546/96309 co-relation queries the response was YES. [2022-09-20 23:25:46,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39198 conditions, 10220 events. 2651/10220 cut-off events. For 92546/96309 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 115527 event pairs, 407 based on Foata normal form. 636/10256 useless extension candidates. Maximal degree in co-relation 39128. Up to 1568 conditions per place. [2022-09-20 23:25:46,150 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 166 selfloop transitions, 82 changer transitions 0/608 dead transitions. [2022-09-20 23:25:46,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 608 transitions, 8824 flow [2022-09-20 23:25:46,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 23:25:46,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 23:25:46,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1483 transitions. [2022-09-20 23:25:46,152 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8059782608695653 [2022-09-20 23:25:46,153 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1483 transitions. [2022-09-20 23:25:46,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1483 transitions. [2022-09-20 23:25:46,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:25:46,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1483 transitions. [2022-09-20 23:25:46,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 148.3) internal successors, (1483), 10 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:46,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 184.0) internal successors, (2024), 11 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:46,157 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 184.0) internal successors, (2024), 11 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:46,157 INFO L175 Difference]: Start difference. First operand has 329 places, 560 transitions, 7527 flow. Second operand 10 states and 1483 transitions. [2022-09-20 23:25:46,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 608 transitions, 8824 flow [2022-09-20 23:25:46,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 608 transitions, 8435 flow, removed 95 selfloop flow, removed 13 redundant places. [2022-09-20 23:25:46,517 INFO L231 Difference]: Finished difference. Result has 325 places, 559 transitions, 7349 flow [2022-09-20 23:25:46,517 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=7185, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7349, PETRI_PLACES=325, PETRI_TRANSITIONS=559} [2022-09-20 23:25:46,517 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 160 predicate places. [2022-09-20 23:25:46,517 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 559 transitions, 7349 flow [2022-09-20 23:25:46,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 147.33333333333334) internal successors, (1326), 9 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:46,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:25:46,518 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:25:46,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-09-20 23:25:46,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-20 23:25:46,725 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:25:46,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:25:46,726 INFO L85 PathProgramCache]: Analyzing trace with hash 862527019, now seen corresponding path program 1 times [2022-09-20 23:25:46,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:25:46,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531005586] [2022-09-20 23:25:46,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:25:46,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:25:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:25:46,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-09-20 23:25:46,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:25:46,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531005586] [2022-09-20 23:25:46,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531005586] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:25:46,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:25:46,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 23:25:46,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226775685] [2022-09-20 23:25:46,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:25:46,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 23:25:46,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:25:46,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 23:25:46,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 23:25:46,773 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 184 [2022-09-20 23:25:46,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 559 transitions, 7349 flow. Second operand has 4 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:46,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:25:46,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 184 [2022-09-20 23:25:46,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:25:48,021 INFO L130 PetriNetUnfolder]: 1551/7172 cut-off events. [2022-09-20 23:25:48,021 INFO L131 PetriNetUnfolder]: For 45163/46720 co-relation queries the response was YES. [2022-09-20 23:25:48,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25222 conditions, 7172 events. 1551/7172 cut-off events. For 45163/46720 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 77422 event pairs, 90 based on Foata normal form. 255/7272 useless extension candidates. Maximal degree in co-relation 25156. Up to 458 conditions per place. [2022-09-20 23:25:48,127 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 27 selfloop transitions, 8 changer transitions 0/574 dead transitions. [2022-09-20 23:25:48,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 574 transitions, 7503 flow [2022-09-20 23:25:48,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 23:25:48,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 23:25:48,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 826 transitions. [2022-09-20 23:25:48,128 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8978260869565218 [2022-09-20 23:25:48,128 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 826 transitions. [2022-09-20 23:25:48,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 826 transitions. [2022-09-20 23:25:48,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:25:48,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 826 transitions. [2022-09-20 23:25:48,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:48,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:48,130 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:48,130 INFO L175 Difference]: Start difference. First operand has 325 places, 559 transitions, 7349 flow. Second operand 5 states and 826 transitions. [2022-09-20 23:25:48,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 574 transitions, 7503 flow [2022-09-20 23:25:48,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 574 transitions, 7383 flow, removed 2 selfloop flow, removed 9 redundant places. [2022-09-20 23:25:48,340 INFO L231 Difference]: Finished difference. Result has 323 places, 562 transitions, 7271 flow [2022-09-20 23:25:48,340 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=7229, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7271, PETRI_PLACES=323, PETRI_TRANSITIONS=562} [2022-09-20 23:25:48,341 INFO L287 CegarLoopForPetriNet]: 165 programPoint places, 158 predicate places. [2022-09-20 23:25:48,341 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 562 transitions, 7271 flow [2022-09-20 23:25:48,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:48,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:25:48,341 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:25:48,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-20 23:25:48,341 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:25:48,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:25:48,342 INFO L85 PathProgramCache]: Analyzing trace with hash 864464251, now seen corresponding path program 1 times [2022-09-20 23:25:48,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:25:48,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717257026] [2022-09-20 23:25:48,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:25:48,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:25:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:25:50,253 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:25:50,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:25:50,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717257026] [2022-09-20 23:25:50,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717257026] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:25:50,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063180254] [2022-09-20 23:25:50,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:25:50,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:25:50,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:25:50,255 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:25:50,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-09-20 23:25:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:25:50,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 53 conjunts are in the unsatisfiable core [2022-09-20 23:25:50,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:25:51,562 INFO L356 Elim1Store]: treesize reduction 49, result has 40.2 percent of original size [2022-09-20 23:25:51,563 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 60 treesize of output 55 [2022-09-20 23:25:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:25:52,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:25:54,299 INFO L356 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-09-20 23:25:54,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 61 treesize of output 79 [2022-09-20 23:25:54,351 INFO L356 Elim1Store]: treesize reduction 102, result has 1.0 percent of original size [2022-09-20 23:25:54,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 42 treesize of output 1 [2022-09-20 23:25:55,364 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:25:55,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063180254] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:25:55,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:25:55,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 30, 31] total 84 [2022-09-20 23:25:55,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28583766] [2022-09-20 23:25:55,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:25:55,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-09-20 23:25:55,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:25:55,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-09-20 23:25:55,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=658, Invalid=6314, Unknown=0, NotChecked=0, Total=6972 [2022-09-20 23:25:55,372 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 184 [2022-09-20 23:25:55,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 562 transitions, 7271 flow. Second operand has 84 states, 84 states have (on average 80.80952380952381) internal successors, (6788), 84 states have internal predecessors, (6788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:25:55,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:25:55,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 184 [2022-09-20 23:25:55,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand