/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 --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 17:21:09,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 17:21:09,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 17:21:09,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 17:21:09,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 17:21:09,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 17:21:09,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 17:21:09,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 17:21:09,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 17:21:09,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 17:21:09,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 17:21:09,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 17:21:09,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 17:21:09,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 17:21:09,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 17:21:09,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 17:21:09,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 17:21:09,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 17:21:09,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 17:21:09,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 17:21:09,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 17:21:09,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 17:21:09,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 17:21:09,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 17:21:09,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 17:21:09,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 17:21:09,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 17:21:09,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 17:21:09,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 17:21:09,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 17:21:09,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 17:21:09,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 17:21:09,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 17:21:09,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 17:21:09,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 17:21:09,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 17:21:09,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 17:21:09,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 17:21:09,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 17:21:09,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 17:21:09,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 17:21:09,730 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 [2022-12-06 17:21:09,766 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 17:21:09,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 17:21:09,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 17:21:09,768 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 17:21:09,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 17:21:09,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 17:21:09,769 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 17:21:09,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 17:21:09,769 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 17:21:09,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 17:21:09,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 17:21:09,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 17:21:09,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 17:21:09,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 17:21:09,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 17:21:09,770 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 17:21:09,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 17:21:09,771 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 17:21:09,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 17:21:09,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 17:21:09,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 17:21:09,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 17:21:09,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 17:21:09,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:21:09,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 17:21:09,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 17:21:09,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 17:21:09,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 17:21:09,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 17:21:09,772 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 17:21:09,772 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 17:21:09,772 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 17:21:10,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 17:21:10,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 17:21:10,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 17:21:10,074 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 17:21:10,075 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 17:21:10,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2022-12-06 17:21:11,096 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 17:21:11,284 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 17:21:11,285 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2022-12-06 17:21:11,291 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/227bcd6de/a51c9b55b922419e8eca4bc8a26ba216/FLAG1f25b1528 [2022-12-06 17:21:11,303 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/227bcd6de/a51c9b55b922419e8eca4bc8a26ba216 [2022-12-06 17:21:11,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 17:21:11,305 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 17:21:11,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 17:21:11,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 17:21:11,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 17:21:11,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:21:11" (1/1) ... [2022-12-06 17:21:11,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a629df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:21:11, skipping insertion in model container [2022-12-06 17:21:11,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:21:11" (1/1) ... [2022-12-06 17:21:11,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 17:21:11,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 17:21:11,459 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c[2848,2861] [2022-12-06 17:21:11,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:21:11,475 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 17:21:11,507 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c[2848,2861] [2022-12-06 17:21:11,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:21:11,520 INFO L208 MainTranslator]: Completed translation [2022-12-06 17:21:11,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:21:11 WrapperNode [2022-12-06 17:21:11,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 17:21:11,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 17:21:11,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 17:21:11,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 17:21:11,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:21:11" (1/1) ... [2022-12-06 17:21:11,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:21:11" (1/1) ... [2022-12-06 17:21:11,561 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 128 [2022-12-06 17:21:11,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 17:21:11,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 17:21:11,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 17:21:11,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 17:21:11,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:21:11" (1/1) ... [2022-12-06 17:21:11,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:21:11" (1/1) ... [2022-12-06 17:21:11,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:21:11" (1/1) ... [2022-12-06 17:21:11,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:21:11" (1/1) ... [2022-12-06 17:21:11,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:21:11" (1/1) ... [2022-12-06 17:21:11,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:21:11" (1/1) ... [2022-12-06 17:21:11,592 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:21:11" (1/1) ... [2022-12-06 17:21:11,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:21:11" (1/1) ... [2022-12-06 17:21:11,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 17:21:11,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 17:21:11,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 17:21:11,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 17:21:11,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:21:11" (1/1) ... [2022-12-06 17:21:11,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:21:11,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:21:11,632 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) [2022-12-06 17:21:11,669 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 [2022-12-06 17:21:11,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 17:21:11,679 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 17:21:11,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 17:21:11,680 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 17:21:11,680 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 17:21:11,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 17:21:11,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 17:21:11,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 17:21:11,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-06 17:21:11,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 17:21:11,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 17:21:11,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 17:21:11,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 17:21:11,682 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 17:21:11,788 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 17:21:11,789 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 17:21:12,005 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 17:21:12,011 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 17:21:12,011 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-06 17:21:12,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:21:12 BoogieIcfgContainer [2022-12-06 17:21:12,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 17:21:12,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 17:21:12,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 17:21:12,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 17:21:12,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:21:11" (1/3) ... [2022-12-06 17:21:12,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c339d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:21:12, skipping insertion in model container [2022-12-06 17:21:12,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:21:11" (2/3) ... [2022-12-06 17:21:12,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c339d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:21:12, skipping insertion in model container [2022-12-06 17:21:12,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:21:12" (3/3) ... [2022-12-06 17:21:12,018 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2022-12-06 17:21:12,030 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 17:21:12,031 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 17:21:12,031 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 17:21:12,124 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-06 17:21:12,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 207 transitions, 430 flow [2022-12-06 17:21:12,245 INFO L130 PetriNetUnfolder]: 21/205 cut-off events. [2022-12-06 17:21:12,245 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 17:21:12,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 205 events. 21/205 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 224 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2022-12-06 17:21:12,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 207 transitions, 430 flow [2022-12-06 17:21:12,253 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 197 transitions, 406 flow [2022-12-06 17:21:12,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 17:21:12,274 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;@171eb929, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 17:21:12,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-06 17:21:12,304 INFO L130 PetriNetUnfolder]: 21/196 cut-off events. [2022-12-06 17:21:12,304 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 17:21:12,304 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:12,305 INFO L213 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] [2022-12-06 17:21:12,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:12,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:12,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1341251739, now seen corresponding path program 1 times [2022-12-06 17:21:12,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:12,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606331227] [2022-12-06 17:21:12,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:12,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:13,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:21:13,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:13,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606331227] [2022-12-06 17:21:13,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606331227] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:21:13,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:21:13,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-06 17:21:13,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978804816] [2022-12-06 17:21:13,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:21:13,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-06 17:21:13,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:13,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-06 17:21:13,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-12-06 17:21:13,418 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 207 [2022-12-06 17:21:13,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 197 transitions, 406 flow. Second operand has 10 states, 10 states have (on average 144.2) internal successors, (1442), 10 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:13,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:13,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 207 [2022-12-06 17:21:13,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:21:13,832 INFO L130 PetriNetUnfolder]: 55/444 cut-off events. [2022-12-06 17:21:13,833 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2022-12-06 17:21:13,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 444 events. 55/444 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1916 event pairs, 14 based on Foata normal form. 31/424 useless extension candidates. Maximal degree in co-relation 301. Up to 79 conditions per place. [2022-12-06 17:21:13,844 INFO L137 encePairwiseOnDemand]: 184/207 looper letters, 82 selfloop transitions, 3 changer transitions 27/243 dead transitions. [2022-12-06 17:21:13,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 243 transitions, 746 flow [2022-12-06 17:21:13,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-06 17:21:13,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-06 17:21:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1538 transitions. [2022-12-06 17:21:13,861 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7429951690821256 [2022-12-06 17:21:13,864 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 9 predicate places. [2022-12-06 17:21:13,864 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 243 transitions, 746 flow [2022-12-06 17:21:13,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 144.2) internal successors, (1442), 10 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:13,865 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:13,866 INFO L213 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] [2022-12-06 17:21:13,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 17:21:13,866 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:13,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:13,868 INFO L85 PathProgramCache]: Analyzing trace with hash 189369647, now seen corresponding path program 2 times [2022-12-06 17:21:13,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:13,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209753427] [2022-12-06 17:21:13,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:13,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:14,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:21:14,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:14,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209753427] [2022-12-06 17:21:14,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209753427] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:21:14,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:21:14,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-06 17:21:14,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153985785] [2022-12-06 17:21:14,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:21:14,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-06 17:21:14,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:14,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-06 17:21:14,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-06 17:21:14,312 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 207 [2022-12-06 17:21:14,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 243 transitions, 746 flow. Second operand has 10 states, 10 states have (on average 144.2) internal successors, (1442), 10 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:14,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:14,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 207 [2022-12-06 17:21:14,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:21:14,697 INFO L130 PetriNetUnfolder]: 53/458 cut-off events. [2022-12-06 17:21:14,698 INFO L131 PetriNetUnfolder]: For 187/255 co-relation queries the response was YES. [2022-12-06 17:21:14,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 458 events. 53/458 cut-off events. For 187/255 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2069 event pairs, 11 based on Foata normal form. 19/430 useless extension candidates. Maximal degree in co-relation 412. Up to 79 conditions per place. [2022-12-06 17:21:14,700 INFO L137 encePairwiseOnDemand]: 197/207 looper letters, 82 selfloop transitions, 3 changer transitions 43/259 dead transitions. [2022-12-06 17:21:14,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 259 transitions, 1075 flow [2022-12-06 17:21:14,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-06 17:21:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-06 17:21:14,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1512 transitions. [2022-12-06 17:21:14,704 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7304347826086957 [2022-12-06 17:21:14,704 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 18 predicate places. [2022-12-06 17:21:14,704 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 259 transitions, 1075 flow [2022-12-06 17:21:14,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 144.2) internal successors, (1442), 10 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:14,706 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:14,708 INFO L213 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] [2022-12-06 17:21:14,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 17:21:14,712 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:14,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:14,714 INFO L85 PathProgramCache]: Analyzing trace with hash -738816106, now seen corresponding path program 1 times [2022-12-06 17:21:14,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:14,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694968653] [2022-12-06 17:21:14,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:14,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:14,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:21:14,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:14,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694968653] [2022-12-06 17:21:14,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694968653] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:21:14,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:21:14,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 17:21:14,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802013710] [2022-12-06 17:21:14,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:21:14,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 17:21:14,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:14,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 17:21:14,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 17:21:14,768 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 207 [2022-12-06 17:21:14,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 259 transitions, 1075 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:14,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:14,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 207 [2022-12-06 17:21:14,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:21:14,809 INFO L130 PetriNetUnfolder]: 39/371 cut-off events. [2022-12-06 17:21:14,809 INFO L131 PetriNetUnfolder]: For 198/238 co-relation queries the response was YES. [2022-12-06 17:21:14,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 371 events. 39/371 cut-off events. For 198/238 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1395 event pairs, 6 based on Foata normal form. 2/336 useless extension candidates. Maximal degree in co-relation 307. Up to 79 conditions per place. [2022-12-06 17:21:14,810 INFO L137 encePairwiseOnDemand]: 203/207 looper letters, 11 selfloop transitions, 2 changer transitions 42/220 dead transitions. [2022-12-06 17:21:14,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 220 transitions, 892 flow [2022-12-06 17:21:14,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 17:21:14,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 17:21:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2022-12-06 17:21:14,812 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9082125603864735 [2022-12-06 17:21:14,812 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 20 predicate places. [2022-12-06 17:21:14,813 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 220 transitions, 892 flow [2022-12-06 17:21:14,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:14,813 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:14,813 INFO L213 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] [2022-12-06 17:21:14,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 17:21:14,813 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:14,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:14,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1779823449, now seen corresponding path program 1 times [2022-12-06 17:21:14,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:14,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353146150] [2022-12-06 17:21:14,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:14,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:21:14,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:14,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353146150] [2022-12-06 17:21:14,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353146150] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:21:14,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:21:14,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 17:21:14,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130890944] [2022-12-06 17:21:14,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:21:14,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 17:21:14,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:14,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 17:21:14,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 17:21:14,887 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 207 [2022-12-06 17:21:14,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 220 transitions, 892 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:14,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:14,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 207 [2022-12-06 17:21:14,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:21:14,932 INFO L130 PetriNetUnfolder]: 53/466 cut-off events. [2022-12-06 17:21:14,932 INFO L131 PetriNetUnfolder]: For 449/508 co-relation queries the response was YES. [2022-12-06 17:21:14,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 466 events. 53/466 cut-off events. For 449/508 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1977 event pairs, 9 based on Foata normal form. 4/423 useless extension candidates. Maximal degree in co-relation 443. Up to 114 conditions per place. [2022-12-06 17:21:14,934 INFO L137 encePairwiseOnDemand]: 204/207 looper letters, 12 selfloop transitions, 2 changer transitions 42/225 dead transitions. [2022-12-06 17:21:14,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 225 transitions, 980 flow [2022-12-06 17:21:14,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 17:21:14,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 17:21:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 574 transitions. [2022-12-06 17:21:14,936 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9243156199677939 [2022-12-06 17:21:14,936 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 22 predicate places. [2022-12-06 17:21:14,937 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 225 transitions, 980 flow [2022-12-06 17:21:14,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:14,937 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:14,937 INFO L213 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] [2022-12-06 17:21:14,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 17:21:14,937 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:14,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:14,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1399349328, now seen corresponding path program 1 times [2022-12-06 17:21:14,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:14,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683007302] [2022-12-06 17:21:14,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:14,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:14,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:21:14,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:14,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683007302] [2022-12-06 17:21:14,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683007302] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:21:14,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:21:15,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 17:21:15,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487629989] [2022-12-06 17:21:15,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:21:15,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 17:21:15,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:15,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 17:21:15,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 17:21:15,001 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 207 [2022-12-06 17:21:15,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 225 transitions, 980 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:15,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:15,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 207 [2022-12-06 17:21:15,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:21:15,054 INFO L130 PetriNetUnfolder]: 69/562 cut-off events. [2022-12-06 17:21:15,055 INFO L131 PetriNetUnfolder]: For 1250/1323 co-relation queries the response was YES. [2022-12-06 17:21:15,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1279 conditions, 562 events. 69/562 cut-off events. For 1250/1323 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2634 event pairs, 16 based on Foata normal form. 6/510 useless extension candidates. Maximal degree in co-relation 673. Up to 174 conditions per place. [2022-12-06 17:21:15,057 INFO L137 encePairwiseOnDemand]: 204/207 looper letters, 16 selfloop transitions, 2 changer transitions 43/231 dead transitions. [2022-12-06 17:21:15,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 231 transitions, 1099 flow [2022-12-06 17:21:15,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 17:21:15,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 17:21:15,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2022-12-06 17:21:15,059 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9227053140096618 [2022-12-06 17:21:15,059 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 24 predicate places. [2022-12-06 17:21:15,060 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 231 transitions, 1099 flow [2022-12-06 17:21:15,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:15,060 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:15,060 INFO L213 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] [2022-12-06 17:21:15,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 17:21:15,060 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:15,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:15,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1734963469, now seen corresponding path program 1 times [2022-12-06 17:21:15,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:15,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670193731] [2022-12-06 17:21:15,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:15,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:15,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:21:15,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:15,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670193731] [2022-12-06 17:21:15,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670193731] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:21:15,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:21:15,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 17:21:15,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666268191] [2022-12-06 17:21:15,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:21:15,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:21:15,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:15,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:21:15,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:21:15,629 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 207 [2022-12-06 17:21:15,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 231 transitions, 1099 flow. Second operand has 20 states, 20 states have (on average 122.7) internal successors, (2454), 20 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:15,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:15,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 207 [2022-12-06 17:21:15,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:21:17,441 INFO L130 PetriNetUnfolder]: 291/2024 cut-off events. [2022-12-06 17:21:17,441 INFO L131 PetriNetUnfolder]: For 5902/6314 co-relation queries the response was YES. [2022-12-06 17:21:17,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5438 conditions, 2024 events. 291/2024 cut-off events. For 5902/6314 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 16685 event pairs, 53 based on Foata normal form. 33/1803 useless extension candidates. Maximal degree in co-relation 1098. Up to 629 conditions per place. [2022-12-06 17:21:17,450 INFO L137 encePairwiseOnDemand]: 169/207 looper letters, 181 selfloop transitions, 40 changer transitions 131/466 dead transitions. [2022-12-06 17:21:17,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 466 transitions, 3564 flow [2022-12-06 17:21:17,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-06 17:21:17,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-06 17:21:17,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4796 transitions. [2022-12-06 17:21:17,458 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6097126875158911 [2022-12-06 17:21:17,458 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 61 predicate places. [2022-12-06 17:21:17,458 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 466 transitions, 3564 flow [2022-12-06 17:21:17,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 122.7) internal successors, (2454), 20 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:17,459 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:17,460 INFO L213 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, 1] [2022-12-06 17:21:17,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 17:21:17,460 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:17,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:17,460 INFO L85 PathProgramCache]: Analyzing trace with hash -304296279, now seen corresponding path program 1 times [2022-12-06 17:21:17,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:17,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333447003] [2022-12-06 17:21:17,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:17,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:17,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:21:17,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:17,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333447003] [2022-12-06 17:21:17,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333447003] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:21:17,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484638623] [2022-12-06 17:21:17,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:17,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:21:17,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:21:17,808 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) [2022-12-06 17:21:17,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 17:21:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:17,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-06 17:21:17,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:21:18,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:21:18,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:21:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:21:18,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484638623] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-06 17:21:18,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-06 17:21:18,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2022-12-06 17:21:18,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596004961] [2022-12-06 17:21:18,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:21:18,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 17:21:18,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:18,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 17:21:18,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2022-12-06 17:21:18,599 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 207 [2022-12-06 17:21:18,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 466 transitions, 3564 flow. Second operand has 14 states, 14 states have (on average 124.14285714285714) internal successors, (1738), 14 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:18,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:18,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 207 [2022-12-06 17:21:18,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:21:19,309 INFO L130 PetriNetUnfolder]: 381/2617 cut-off events. [2022-12-06 17:21:19,309 INFO L131 PetriNetUnfolder]: For 10551/11349 co-relation queries the response was YES. [2022-12-06 17:21:19,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8431 conditions, 2617 events. 381/2617 cut-off events. For 10551/11349 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 23208 event pairs, 75 based on Foata normal form. 22/2303 useless extension candidates. Maximal degree in co-relation 1064. Up to 871 conditions per place. [2022-12-06 17:21:19,320 INFO L137 encePairwiseOnDemand]: 183/207 looper letters, 260 selfloop transitions, 23 changer transitions 188/585 dead transitions. [2022-12-06 17:21:19,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 585 transitions, 5732 flow [2022-12-06 17:21:19,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-06 17:21:19,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-06 17:21:19,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3191 transitions. [2022-12-06 17:21:19,325 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6166183574879227 [2022-12-06 17:21:19,325 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 85 predicate places. [2022-12-06 17:21:19,325 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 585 transitions, 5732 flow [2022-12-06 17:21:19,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 124.14285714285714) internal successors, (1738), 14 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:19,326 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:19,326 INFO L213 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, 1] [2022-12-06 17:21:19,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-06 17:21:19,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:21:19,531 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:19,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:19,532 INFO L85 PathProgramCache]: Analyzing trace with hash -755780529, now seen corresponding path program 2 times [2022-12-06 17:21:19,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:19,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795994606] [2022-12-06 17:21:19,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:19,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:19,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:21:19,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:19,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795994606] [2022-12-06 17:21:19,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795994606] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:21:19,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084848944] [2022-12-06 17:21:19,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:21:19,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:21:19,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:21:19,814 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) [2022-12-06 17:21:19,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 17:21:19,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-06 17:21:19,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:21:19,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-06 17:21:19,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:21:20,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:21:20,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-06 17:21:20,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084848944] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:21:20,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-06 17:21:20,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [15] total 25 [2022-12-06 17:21:20,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692689511] [2022-12-06 17:21:20,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:21:20,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-06 17:21:20,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:20,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-06 17:21:20,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2022-12-06 17:21:20,173 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 207 [2022-12-06 17:21:20,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 585 transitions, 5732 flow. Second operand has 12 states, 12 states have (on average 141.66666666666666) internal successors, (1700), 12 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:20,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:20,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 207 [2022-12-06 17:21:20,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:21:20,931 INFO L130 PetriNetUnfolder]: 378/3150 cut-off events. [2022-12-06 17:21:20,931 INFO L131 PetriNetUnfolder]: For 15431/16659 co-relation queries the response was YES. [2022-12-06 17:21:20,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11933 conditions, 3150 events. 378/3150 cut-off events. For 15431/16659 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 29871 event pairs, 68 based on Foata normal form. 31/2803 useless extension candidates. Maximal degree in co-relation 1410. Up to 1197 conditions per place. [2022-12-06 17:21:20,945 INFO L137 encePairwiseOnDemand]: 187/207 looper letters, 308 selfloop transitions, 9 changer transitions 311/781 dead transitions. [2022-12-06 17:21:20,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 781 transitions, 9347 flow [2022-12-06 17:21:20,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-06 17:21:20,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-06 17:21:20,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2579 transitions. [2022-12-06 17:21:20,950 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.692163177670424 [2022-12-06 17:21:20,950 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 102 predicate places. [2022-12-06 17:21:20,950 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 781 transitions, 9347 flow [2022-12-06 17:21:20,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 141.66666666666666) internal successors, (1700), 12 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:20,951 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:20,951 INFO L213 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, 1] [2022-12-06 17:21:20,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-06 17:21:21,158 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,SelfDestructingSolverStorable7 [2022-12-06 17:21:21,159 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:21,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:21,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2025693608, now seen corresponding path program 1 times [2022-12-06 17:21:21,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:21,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329674501] [2022-12-06 17:21:21,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:21,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:21,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:21:21,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:21,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329674501] [2022-12-06 17:21:21,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329674501] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:21:21,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558370223] [2022-12-06 17:21:21,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:21,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:21:21,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:21:21,465 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) [2022-12-06 17:21:21,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-06 17:21:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:21,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-06 17:21:21,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:21:21,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:21:21,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:21:22,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:21:22,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558370223] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-06 17:21:22,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-06 17:21:22,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2022-12-06 17:21:22,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508027459] [2022-12-06 17:21:22,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:21:22,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 17:21:22,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:22,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 17:21:22,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2022-12-06 17:21:22,157 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 207 [2022-12-06 17:21:22,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 781 transitions, 9347 flow. Second operand has 14 states, 14 states have (on average 124.14285714285714) internal successors, (1738), 14 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:22,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:22,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 207 [2022-12-06 17:21:22,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:21:23,139 INFO L130 PetriNetUnfolder]: 380/3121 cut-off events. [2022-12-06 17:21:23,139 INFO L131 PetriNetUnfolder]: For 20026/21792 co-relation queries the response was YES. [2022-12-06 17:21:23,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13488 conditions, 3121 events. 380/3121 cut-off events. For 20026/21792 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 29546 event pairs, 71 based on Foata normal form. 27/2776 useless extension candidates. Maximal degree in co-relation 1420. Up to 1207 conditions per place. [2022-12-06 17:21:23,153 INFO L137 encePairwiseOnDemand]: 180/207 looper letters, 345 selfloop transitions, 24 changer transitions 330/813 dead transitions. [2022-12-06 17:21:23,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 813 transitions, 11192 flow [2022-12-06 17:21:23,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 17:21:23,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 17:21:23,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3426 transitions. [2022-12-06 17:21:23,157 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6129898013955984 [2022-12-06 17:21:23,157 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 128 predicate places. [2022-12-06 17:21:23,158 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 813 transitions, 11192 flow [2022-12-06 17:21:23,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 124.14285714285714) internal successors, (1738), 14 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:23,158 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:23,158 INFO L213 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, 1, 1, 1, 1] [2022-12-06 17:21:23,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-06 17:21:23,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:21:23,363 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:23,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:23,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1793241861, now seen corresponding path program 1 times [2022-12-06 17:21:23,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:23,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874007124] [2022-12-06 17:21:23,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:23,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:23,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:21:23,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:23,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874007124] [2022-12-06 17:21:23,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874007124] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:21:23,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:21:23,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 17:21:23,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737813147] [2022-12-06 17:21:23,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:21:23,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 17:21:23,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:23,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 17:21:23,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-06 17:21:23,483 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 207 [2022-12-06 17:21:23,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 813 transitions, 11192 flow. Second operand has 7 states, 7 states have (on average 156.28571428571428) internal successors, (1094), 7 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:23,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:23,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 207 [2022-12-06 17:21:23,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:21:23,873 INFO L130 PetriNetUnfolder]: 332/2441 cut-off events. [2022-12-06 17:21:23,873 INFO L131 PetriNetUnfolder]: For 20377/22412 co-relation queries the response was YES. [2022-12-06 17:21:23,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11093 conditions, 2441 events. 332/2441 cut-off events. For 20377/22412 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21389 event pairs, 91 based on Foata normal form. 29/2182 useless extension candidates. Maximal degree in co-relation 1870. Up to 893 conditions per place. [2022-12-06 17:21:23,885 INFO L137 encePairwiseOnDemand]: 196/207 looper letters, 148 selfloop transitions, 12 changer transitions 296/684 dead transitions. [2022-12-06 17:21:23,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 684 transitions, 9554 flow [2022-12-06 17:21:23,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-06 17:21:23,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-06 17:21:23,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1597 transitions. [2022-12-06 17:21:23,887 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7714975845410628 [2022-12-06 17:21:23,888 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 137 predicate places. [2022-12-06 17:21:23,888 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 684 transitions, 9554 flow [2022-12-06 17:21:23,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 156.28571428571428) internal successors, (1094), 7 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:23,889 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:23,889 INFO L213 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, 1, 1, 1, 1] [2022-12-06 17:21:23,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-06 17:21:23,889 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:23,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:23,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2011361365, now seen corresponding path program 1 times [2022-12-06 17:21:23,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:23,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454672940] [2022-12-06 17:21:23,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:23,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:24,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:21:24,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:24,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454672940] [2022-12-06 17:21:24,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454672940] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:21:24,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:21:24,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 17:21:24,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031121154] [2022-12-06 17:21:24,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:21:24,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 17:21:24,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:24,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 17:21:24,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-06 17:21:24,009 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 207 [2022-12-06 17:21:24,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 684 transitions, 9554 flow. Second operand has 7 states, 7 states have (on average 156.28571428571428) internal successors, (1094), 7 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:24,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:24,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 207 [2022-12-06 17:21:24,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:21:24,374 INFO L130 PetriNetUnfolder]: 417/2481 cut-off events. [2022-12-06 17:21:24,375 INFO L131 PetriNetUnfolder]: For 27595/29407 co-relation queries the response was YES. [2022-12-06 17:21:24,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11816 conditions, 2481 events. 417/2481 cut-off events. For 27595/29407 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 21351 event pairs, 187 based on Foata normal form. 9/2186 useless extension candidates. Maximal degree in co-relation 2655. Up to 846 conditions per place. [2022-12-06 17:21:24,388 INFO L137 encePairwiseOnDemand]: 196/207 looper letters, 99 selfloop transitions, 8 changer transitions 330/633 dead transitions. [2022-12-06 17:21:24,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 633 transitions, 9190 flow [2022-12-06 17:21:24,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-06 17:21:24,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-06 17:21:24,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1594 transitions. [2022-12-06 17:21:24,390 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.770048309178744 [2022-12-06 17:21:24,390 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 145 predicate places. [2022-12-06 17:21:24,390 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 633 transitions, 9190 flow [2022-12-06 17:21:24,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 156.28571428571428) internal successors, (1094), 7 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:24,391 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:24,391 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:21:24,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-06 17:21:24,394 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:24,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:24,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1354514508, now seen corresponding path program 1 times [2022-12-06 17:21:24,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:24,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109151118] [2022-12-06 17:21:24,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:24,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:24,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:21:24,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:24,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109151118] [2022-12-06 17:21:24,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109151118] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:21:24,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704987020] [2022-12-06 17:21:24,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:24,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:21:24,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:21:24,601 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) [2022-12-06 17:21:24,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-06 17:21:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:24,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-06 17:21:24,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:21:24,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:21:24,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:21:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:21:25,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704987020] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-06 17:21:25,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-06 17:21:25,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-12-06 17:21:25,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801024833] [2022-12-06 17:21:25,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:21:25,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-06 17:21:25,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:25,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-06 17:21:25,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-12-06 17:21:25,158 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 207 [2022-12-06 17:21:25,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 633 transitions, 9190 flow. Second operand has 11 states, 11 states have (on average 153.36363636363637) internal successors, (1687), 11 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:25,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:25,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 207 [2022-12-06 17:21:25,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:21:25,778 INFO L130 PetriNetUnfolder]: 429/2518 cut-off events. [2022-12-06 17:21:25,779 INFO L131 PetriNetUnfolder]: For 31962/33774 co-relation queries the response was YES. [2022-12-06 17:21:25,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12703 conditions, 2518 events. 429/2518 cut-off events. For 31962/33774 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 21437 event pairs, 154 based on Foata normal form. 30/2248 useless extension candidates. Maximal degree in co-relation 2830. Up to 849 conditions per place. [2022-12-06 17:21:25,789 INFO L137 encePairwiseOnDemand]: 192/207 looper letters, 116 selfloop transitions, 19 changer transitions 334/663 dead transitions. [2022-12-06 17:21:25,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 663 transitions, 10149 flow [2022-12-06 17:21:25,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-06 17:21:25,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-06 17:21:25,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2653 transitions. [2022-12-06 17:21:25,792 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7539073600454674 [2022-12-06 17:21:25,793 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 161 predicate places. [2022-12-06 17:21:25,793 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 663 transitions, 10149 flow [2022-12-06 17:21:25,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 153.36363636363637) internal successors, (1687), 11 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:25,793 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:25,794 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:21:25,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-06 17:21:25,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:21:25,999 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:25,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:26,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1079544703, now seen corresponding path program 1 times [2022-12-06 17:21:26,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:26,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238686614] [2022-12-06 17:21:26,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:26,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:21:26,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:26,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238686614] [2022-12-06 17:21:26,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238686614] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:21:26,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:21:26,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 17:21:26,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068694964] [2022-12-06 17:21:26,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:21:26,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 17:21:26,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:26,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 17:21:26,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-06 17:21:26,101 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 207 [2022-12-06 17:21:26,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 663 transitions, 10149 flow. Second operand has 7 states, 7 states have (on average 156.85714285714286) internal successors, (1098), 7 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:26,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:26,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 207 [2022-12-06 17:21:26,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:21:26,452 INFO L130 PetriNetUnfolder]: 322/1909 cut-off events. [2022-12-06 17:21:26,452 INFO L131 PetriNetUnfolder]: For 29497/31096 co-relation queries the response was YES. [2022-12-06 17:21:26,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10552 conditions, 1909 events. 322/1909 cut-off events. For 29497/31096 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14643 event pairs, 90 based on Foata normal form. 19/1721 useless extension candidates. Maximal degree in co-relation 2889. Up to 638 conditions per place. [2022-12-06 17:21:26,463 INFO L137 encePairwiseOnDemand]: 198/207 looper letters, 101 selfloop transitions, 8 changer transitions 336/619 dead transitions. [2022-12-06 17:21:26,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 619 transitions, 9849 flow [2022-12-06 17:21:26,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 17:21:26,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 17:21:26,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1280 transitions. [2022-12-06 17:21:26,465 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7729468599033816 [2022-12-06 17:21:26,467 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 168 predicate places. [2022-12-06 17:21:26,467 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 619 transitions, 9849 flow [2022-12-06 17:21:26,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 156.85714285714286) internal successors, (1098), 7 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:26,468 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:26,468 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:21:26,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-06 17:21:26,469 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:26,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:26,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1886811031, now seen corresponding path program 1 times [2022-12-06 17:21:26,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:26,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141172791] [2022-12-06 17:21:26,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:26,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:26,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:21:26,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:26,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141172791] [2022-12-06 17:21:26,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141172791] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:21:26,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:21:26,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 17:21:26,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371591900] [2022-12-06 17:21:26,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:21:26,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 17:21:26,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:26,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 17:21:26,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-06 17:21:26,562 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 207 [2022-12-06 17:21:26,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 619 transitions, 9849 flow. Second operand has 7 states, 7 states have (on average 156.85714285714286) internal successors, (1098), 7 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:26,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:26,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 207 [2022-12-06 17:21:26,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:21:26,868 INFO L130 PetriNetUnfolder]: 274/1698 cut-off events. [2022-12-06 17:21:26,868 INFO L131 PetriNetUnfolder]: For 31883/33722 co-relation queries the response was YES. [2022-12-06 17:21:26,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9729 conditions, 1698 events. 274/1698 cut-off events. For 31883/33722 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 12424 event pairs, 75 based on Foata normal form. 27/1554 useless extension candidates. Maximal degree in co-relation 2978. Up to 544 conditions per place. [2022-12-06 17:21:26,878 INFO L137 encePairwiseOnDemand]: 198/207 looper letters, 80 selfloop transitions, 6 changer transitions 335/572 dead transitions. [2022-12-06 17:21:26,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 572 transitions, 9362 flow [2022-12-06 17:21:26,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 17:21:26,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 17:21:26,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1279 transitions. [2022-12-06 17:21:26,880 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7723429951690821 [2022-12-06 17:21:26,881 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 174 predicate places. [2022-12-06 17:21:26,881 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 572 transitions, 9362 flow [2022-12-06 17:21:26,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 156.85714285714286) internal successors, (1098), 7 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:26,882 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:26,882 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:21:26,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-06 17:21:26,882 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:26,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:26,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2081011015, now seen corresponding path program 1 times [2022-12-06 17:21:26,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:26,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973291866] [2022-12-06 17:21:26,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:26,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:27,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:21:27,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:27,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973291866] [2022-12-06 17:21:27,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973291866] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:21:27,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980612034] [2022-12-06 17:21:27,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:27,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:21:27,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:21:27,065 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) [2022-12-06 17:21:27,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-06 17:21:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:27,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-06 17:21:27,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:21:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:21:27,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:21:27,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:21:27,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980612034] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-06 17:21:27,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-06 17:21:27,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-12-06 17:21:27,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528495844] [2022-12-06 17:21:27,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:21:27,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-06 17:21:27,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:27,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-06 17:21:27,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-12-06 17:21:27,594 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 207 [2022-12-06 17:21:27,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 572 transitions, 9362 flow. Second operand has 11 states, 11 states have (on average 153.45454545454547) internal successors, (1688), 11 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:27,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:27,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 207 [2022-12-06 17:21:27,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:21:28,101 INFO L130 PetriNetUnfolder]: 283/1778 cut-off events. [2022-12-06 17:21:28,101 INFO L131 PetriNetUnfolder]: For 34615/36065 co-relation queries the response was YES. [2022-12-06 17:21:28,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10666 conditions, 1778 events. 283/1778 cut-off events. For 34615/36065 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13079 event pairs, 52 based on Foata normal form. 16/1623 useless extension candidates. Maximal degree in co-relation 3741. Up to 552 conditions per place. [2022-12-06 17:21:28,108 INFO L137 encePairwiseOnDemand]: 192/207 looper letters, 89 selfloop transitions, 16 changer transitions 336/592 dead transitions. [2022-12-06 17:21:28,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 592 transitions, 10328 flow [2022-12-06 17:21:28,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-06 17:21:28,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-06 17:21:28,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2487 transitions. [2022-12-06 17:21:28,110 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7509057971014492 [2022-12-06 17:21:28,110 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 189 predicate places. [2022-12-06 17:21:28,111 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 592 transitions, 10328 flow [2022-12-06 17:21:28,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 153.45454545454547) internal successors, (1688), 11 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:28,111 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:28,111 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:21:28,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-06 17:21:28,316 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,SelfDestructingSolverStorable14 [2022-12-06 17:21:28,316 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:28,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:28,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1284576080, now seen corresponding path program 1 times [2022-12-06 17:21:28,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:28,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052498391] [2022-12-06 17:21:28,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:28,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:21:28,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:28,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052498391] [2022-12-06 17:21:28,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052498391] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:21:28,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945003605] [2022-12-06 17:21:28,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:28,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:21:28,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:21:28,860 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) [2022-12-06 17:21:28,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-06 17:21:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:28,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-06 17:21:28,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:21:29,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:21:29,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:21:30,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:21:30,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945003605] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:21:30,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:21:30,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 20] total 46 [2022-12-06 17:21:30,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621522683] [2022-12-06 17:21:30,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:21:30,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-06 17:21:30,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:30,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-06 17:21:30,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1784, Unknown=0, NotChecked=0, Total=2070 [2022-12-06 17:21:30,352 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 207 [2022-12-06 17:21:30,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 592 transitions, 10328 flow. Second operand has 46 states, 46 states have (on average 114.3695652173913) internal successors, (5261), 46 states have internal predecessors, (5261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:30,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:30,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 207 [2022-12-06 17:21:30,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:21:32,997 INFO L130 PetriNetUnfolder]: 813/4698 cut-off events. [2022-12-06 17:21:32,998 INFO L131 PetriNetUnfolder]: For 99593/103850 co-relation queries the response was YES. [2022-12-06 17:21:33,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30033 conditions, 4698 events. 813/4698 cut-off events. For 99593/103850 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 45669 event pairs, 168 based on Foata normal form. 72/4280 useless extension candidates. Maximal degree in co-relation 6691. Up to 1671 conditions per place. [2022-12-06 17:21:33,024 INFO L137 encePairwiseOnDemand]: 176/207 looper letters, 436 selfloop transitions, 45 changer transitions 629/1214 dead transitions. [2022-12-06 17:21:33,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1214 transitions, 25164 flow [2022-12-06 17:21:33,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-06 17:21:33,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-06 17:21:33,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 5895 transitions. [2022-12-06 17:21:33,037 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5695652173913044 [2022-12-06 17:21:33,039 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 238 predicate places. [2022-12-06 17:21:33,039 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 1214 transitions, 25164 flow [2022-12-06 17:21:33,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 114.3695652173913) internal successors, (5261), 46 states have internal predecessors, (5261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:33,041 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:33,041 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:21:33,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-06 17:21:33,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-06 17:21:33,246 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:33,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:33,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1395822851, now seen corresponding path program 1 times [2022-12-06 17:21:33,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:33,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6416436] [2022-12-06 17:21:33,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:33,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:21:33,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:33,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6416436] [2022-12-06 17:21:33,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6416436] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:21:33,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125379839] [2022-12-06 17:21:33,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:33,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:21:33,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:21:33,932 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) [2022-12-06 17:21:33,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-06 17:21:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:34,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-06 17:21:34,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:21:34,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 17:21:34,101 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-06 17:21:34,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-12-06 17:21:34,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 17:21:34,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 17:21:34,266 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-06 17:21:34,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2022-12-06 17:21:34,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-06 17:21:34,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 17:21:34,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 17:21:34,619 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-12-06 17:21:34,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2022-12-06 17:21:34,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-06 17:21:34,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 17:21:34,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 17:21:35,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-12-06 17:21:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:21:35,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:21:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:21:35,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125379839] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-06 17:21:35,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-06 17:21:35,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20, 25] total 49 [2022-12-06 17:21:35,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807460326] [2022-12-06 17:21:35,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:21:35,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-06 17:21:35,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:35,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-06 17:21:35,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2176, Unknown=0, NotChecked=0, Total=2352 [2022-12-06 17:21:35,373 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 207 [2022-12-06 17:21:35,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 1214 transitions, 25164 flow. Second operand has 9 states, 9 states have (on average 152.88888888888889) internal successors, (1376), 9 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:35,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:35,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 207 [2022-12-06 17:21:35,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:21:42,891 INFO L130 PetriNetUnfolder]: 11744/30515 cut-off events. [2022-12-06 17:21:42,891 INFO L131 PetriNetUnfolder]: For 412181/419334 co-relation queries the response was YES. [2022-12-06 17:21:42,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158950 conditions, 30515 events. 11744/30515 cut-off events. For 412181/419334 co-relation queries the response was YES. Maximal size of possible extension queue 1140. Compared 345530 event pairs, 3100 based on Foata normal form. 110/27952 useless extension candidates. Maximal degree in co-relation 46773. Up to 8301 conditions per place. [2022-12-06 17:21:43,088 INFO L137 encePairwiseOnDemand]: 193/207 looper letters, 927 selfloop transitions, 47 changer transitions 714/2043 dead transitions. [2022-12-06 17:21:43,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 2043 transitions, 45713 flow [2022-12-06 17:21:43,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-06 17:21:43,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-06 17:21:43,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2661 transitions. [2022-12-06 17:21:43,093 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8034420289855072 [2022-12-06 17:21:43,094 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 253 predicate places. [2022-12-06 17:21:43,094 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 2043 transitions, 45713 flow [2022-12-06 17:21:43,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 152.88888888888889) internal successors, (1376), 9 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:43,094 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:43,095 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:21:43,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-06 17:21:43,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:21:43,301 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:43,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:43,301 INFO L85 PathProgramCache]: Analyzing trace with hash 742701237, now seen corresponding path program 2 times [2022-12-06 17:21:43,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:43,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450997239] [2022-12-06 17:21:43,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:43,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:43,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:21:43,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:43,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450997239] [2022-12-06 17:21:43,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450997239] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:21:43,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:21:43,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 17:21:43,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675861177] [2022-12-06 17:21:43,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:21:43,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:21:43,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:43,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:21:43,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:21:43,838 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 207 [2022-12-06 17:21:43,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 2043 transitions, 45713 flow. Second operand has 20 states, 20 states have (on average 134.6) internal successors, (2692), 20 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:43,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:43,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 207 [2022-12-06 17:21:43,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:22:00,428 INFO L130 PetriNetUnfolder]: 19202/47840 cut-off events. [2022-12-06 17:22:00,428 INFO L131 PetriNetUnfolder]: For 604462/615605 co-relation queries the response was YES. [2022-12-06 17:22:00,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266850 conditions, 47840 events. 19202/47840 cut-off events. For 604462/615605 co-relation queries the response was YES. Maximal size of possible extension queue 1698. Compared 569786 event pairs, 4386 based on Foata normal form. 261/44168 useless extension candidates. Maximal degree in co-relation 78467. Up to 14896 conditions per place. [2022-12-06 17:22:00,793 INFO L137 encePairwiseOnDemand]: 177/207 looper letters, 1727 selfloop transitions, 234 changer transitions 783/3079 dead transitions. [2022-12-06 17:22:00,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 3079 transitions, 67251 flow [2022-12-06 17:22:00,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-06 17:22:00,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-06 17:22:00,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3683 transitions. [2022-12-06 17:22:00,796 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6843180973615757 [2022-12-06 17:22:00,797 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 278 predicate places. [2022-12-06 17:22:00,797 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 3079 transitions, 67251 flow [2022-12-06 17:22:00,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 134.6) internal successors, (2692), 20 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:22:00,798 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:22:00,798 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:22:00,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-06 17:22:00,798 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:22:00,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:22:00,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1576040081, now seen corresponding path program 3 times [2022-12-06 17:22:00,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:22:00,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644452947] [2022-12-06 17:22:00,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:22:00,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:22:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:22:01,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:22:01,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:22:01,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644452947] [2022-12-06 17:22:01,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644452947] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:22:01,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:22:01,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 17:22:01,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678698362] [2022-12-06 17:22:01,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:22:01,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:22:01,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:22:01,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:22:01,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:22:01,318 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 207 [2022-12-06 17:22:01,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 3079 transitions, 67251 flow. Second operand has 20 states, 20 states have (on average 134.6) internal successors, (2692), 20 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:22:01,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:22:01,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 207 [2022-12-06 17:22:01,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:22:32,919 INFO L130 PetriNetUnfolder]: 28033/67606 cut-off events. [2022-12-06 17:22:32,920 INFO L131 PetriNetUnfolder]: For 846595/862472 co-relation queries the response was YES. [2022-12-06 17:22:33,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409302 conditions, 67606 events. 28033/67606 cut-off events. For 846595/862472 co-relation queries the response was YES. Maximal size of possible extension queue 2525. Compared 834263 event pairs, 4460 based on Foata normal form. 210/62194 useless extension candidates. Maximal degree in co-relation 120912. Up to 23989 conditions per place. [2022-12-06 17:22:33,533 INFO L137 encePairwiseOnDemand]: 176/207 looper letters, 2968 selfloop transitions, 323 changer transitions 815/4441 dead transitions. [2022-12-06 17:22:33,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 4441 transitions, 97441 flow [2022-12-06 17:22:33,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-06 17:22:33,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-06 17:22:33,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4162 transitions. [2022-12-06 17:22:33,550 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.693320006663335 [2022-12-06 17:22:33,550 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 306 predicate places. [2022-12-06 17:22:33,550 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 4441 transitions, 97441 flow [2022-12-06 17:22:33,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 134.6) internal successors, (2692), 20 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:22:33,551 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:22:33,551 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:22:33,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-06 17:22:33,552 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:22:33,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:22:33,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2045941199, now seen corresponding path program 4 times [2022-12-06 17:22:33,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:22:33,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479663104] [2022-12-06 17:22:33,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:22:33,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:22:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:22:34,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:22:34,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:22:34,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479663104] [2022-12-06 17:22:34,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479663104] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:22:34,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575089447] [2022-12-06 17:22:34,498 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 17:22:34,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:22:34,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:22:34,499 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) [2022-12-06 17:22:34,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-06 17:22:34,637 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 17:22:34,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:22:34,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-06 17:22:34,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:22:34,783 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-06 17:22:34,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-12-06 17:22:34,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:22:34,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:22:34,918 INFO L321 Elim1Store]: treesize reduction 30, result has 58.9 percent of original size [2022-12-06 17:22:34,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 50 [2022-12-06 17:22:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:22:34,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575089447] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:22:34,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:22:34,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 9, 9] total 31 [2022-12-06 17:22:34,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759308120] [2022-12-06 17:22:34,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:22:34,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-06 17:22:34,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:22:34,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-06 17:22:34,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=812, Unknown=0, NotChecked=0, Total=930 [2022-12-06 17:22:34,950 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 207 [2022-12-06 17:22:34,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 4441 transitions, 97441 flow. Second operand has 31 states, 31 states have (on average 135.1290322580645) internal successors, (4189), 31 states have internal predecessors, (4189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:22:34,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:22:34,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 207 [2022-12-06 17:22:34,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:23:27,962 INFO L130 PetriNetUnfolder]: 33799/80947 cut-off events. [2022-12-06 17:23:27,962 INFO L131 PetriNetUnfolder]: For 1076042/1100744 co-relation queries the response was YES. [2022-12-06 17:23:28,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549153 conditions, 80947 events. 33799/80947 cut-off events. For 1076042/1100744 co-relation queries the response was YES. Maximal size of possible extension queue 3105. Compared 1022866 event pairs, 5383 based on Foata normal form. 454/74695 useless extension candidates. Maximal degree in co-relation 167588. Up to 31933 conditions per place. [2022-12-06 17:23:28,713 INFO L137 encePairwiseOnDemand]: 175/207 looper letters, 3528 selfloop transitions, 443 changer transitions 855/5161 dead transitions. [2022-12-06 17:23:28,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 5161 transitions, 123300 flow [2022-12-06 17:23:28,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-06 17:23:28,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-06 17:23:28,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5164 transitions. [2022-12-06 17:23:28,718 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.69296833064949 [2022-12-06 17:23:28,720 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 341 predicate places. [2022-12-06 17:23:28,720 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 5161 transitions, 123300 flow [2022-12-06 17:23:28,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 135.1290322580645) internal successors, (4189), 31 states have internal predecessors, (4189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:23:28,721 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:23:28,721 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:23:28,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-06 17:23:28,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:23:28,926 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:23:28,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:23:28,927 INFO L85 PathProgramCache]: Analyzing trace with hash 228206587, now seen corresponding path program 5 times [2022-12-06 17:23:28,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:23:28,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114585877] [2022-12-06 17:23:28,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:23:28,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:23:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:23:29,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:23:29,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:23:29,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114585877] [2022-12-06 17:23:29,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114585877] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:23:29,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:23:29,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 17:23:29,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863251195] [2022-12-06 17:23:29,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:23:29,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:23:29,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:23:29,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:23:29,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:23:29,887 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 207 [2022-12-06 17:23:29,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 5161 transitions, 123300 flow. Second operand has 20 states, 20 states have (on average 134.6) internal successors, (2692), 20 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:23:29,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:23:29,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 207 [2022-12-06 17:23:29,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:24:37,951 INFO L130 PetriNetUnfolder]: 34449/82343 cut-off events. [2022-12-06 17:24:37,951 INFO L131 PetriNetUnfolder]: For 1166004/1191918 co-relation queries the response was YES. [2022-12-06 17:24:38,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612729 conditions, 82343 events. 34449/82343 cut-off events. For 1166004/1191918 co-relation queries the response was YES. Maximal size of possible extension queue 3184. Compared 1042089 event pairs, 5154 based on Foata normal form. 230/75833 useless extension candidates. Maximal degree in co-relation 188442. Up to 32813 conditions per place. [2022-12-06 17:24:38,658 INFO L137 encePairwiseOnDemand]: 175/207 looper letters, 3827 selfloop transitions, 341 changer transitions 856/5358 dead transitions. [2022-12-06 17:24:38,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 5358 transitions, 137006 flow [2022-12-06 17:24:38,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-06 17:24:38,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-06 17:24:38,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3430 transitions. [2022-12-06 17:24:38,660 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6904186795491143 [2022-12-06 17:24:38,661 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 364 predicate places. [2022-12-06 17:24:38,661 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 5358 transitions, 137006 flow [2022-12-06 17:24:38,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 134.6) internal successors, (2692), 20 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:24:38,661 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:24:38,662 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:24:38,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-06 17:24:38,662 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:24:38,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:24:38,662 INFO L85 PathProgramCache]: Analyzing trace with hash -428514117, now seen corresponding path program 6 times [2022-12-06 17:24:38,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:24:38,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639698769] [2022-12-06 17:24:38,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:24:38,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:24:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:24:39,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:24:39,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:24:39,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639698769] [2022-12-06 17:24:39,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639698769] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:24:39,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:24:39,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 17:24:39,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968439603] [2022-12-06 17:24:39,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:24:39,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:24:39,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:24:39,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:24:39,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:24:39,170 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 207 [2022-12-06 17:24:39,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 5358 transitions, 137006 flow. Second operand has 20 states, 20 states have (on average 134.6) internal successors, (2692), 20 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:24:39,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:24:39,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 207 [2022-12-06 17:24:39,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:25:48,330 INFO L130 PetriNetUnfolder]: 34560/82673 cut-off events. [2022-12-06 17:25:48,330 INFO L131 PetriNetUnfolder]: For 1243082/1274915 co-relation queries the response was YES. [2022-12-06 17:25:48,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672039 conditions, 82673 events. 34560/82673 cut-off events. For 1243082/1274915 co-relation queries the response was YES. Maximal size of possible extension queue 3209. Compared 1048561 event pairs, 5276 based on Foata normal form. 237/76403 useless extension candidates. Maximal degree in co-relation 208523. Up to 33155 conditions per place. [2022-12-06 17:25:49,307 INFO L137 encePairwiseOnDemand]: 174/207 looper letters, 3941 selfloop transitions, 341 changer transitions 855/5472 dead transitions. [2022-12-06 17:25:49,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 5472 transitions, 149488 flow [2022-12-06 17:25:49,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-06 17:25:49,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-06 17:25:49,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2717 transitions. [2022-12-06 17:25:49,309 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6908212560386473 [2022-12-06 17:25:49,310 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 382 predicate places. [2022-12-06 17:25:49,310 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 5472 transitions, 149488 flow [2022-12-06 17:25:49,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 134.6) internal successors, (2692), 20 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:25:49,311 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:25:49,311 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:25:49,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-06 17:25:49,311 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:25:49,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:25:49,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1994238917, now seen corresponding path program 7 times [2022-12-06 17:25:49,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:25:49,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360667892] [2022-12-06 17:25:49,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:25:49,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:25:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:25:49,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:25:49,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:25:49,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360667892] [2022-12-06 17:25:49,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360667892] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:25:49,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:25:49,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-06 17:25:49,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454781412] [2022-12-06 17:25:49,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:25:49,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-06 17:25:49,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:25:49,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-06 17:25:49,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-12-06 17:25:49,991 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 207 [2022-12-06 17:25:49,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 5472 transitions, 149488 flow. Second operand has 21 states, 21 states have (on average 134.47619047619048) internal successors, (2824), 21 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:25:49,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:25:49,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 207 [2022-12-06 17:25:49,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:26:58,045 INFO L130 PetriNetUnfolder]: 32560/76511 cut-off events. [2022-12-06 17:26:58,046 INFO L131 PetriNetUnfolder]: For 1190590/1225981 co-relation queries the response was YES. [2022-12-06 17:26:58,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679537 conditions, 76511 events. 32560/76511 cut-off events. For 1190590/1225981 co-relation queries the response was YES. Maximal size of possible extension queue 2926. Compared 949767 event pairs, 5216 based on Foata normal form. 258/70799 useless extension candidates. Maximal degree in co-relation 216663. Up to 30450 conditions per place. [2022-12-06 17:26:58,754 INFO L137 encePairwiseOnDemand]: 174/207 looper letters, 3782 selfloop transitions, 361 changer transitions 823/5301 dead transitions. [2022-12-06 17:26:58,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 5301 transitions, 152400 flow [2022-12-06 17:26:58,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-06 17:26:58,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-06 17:26:58,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3136 transitions. [2022-12-06 17:26:58,757 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6886253842775582 [2022-12-06 17:26:58,757 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 403 predicate places. [2022-12-06 17:26:58,758 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 5301 transitions, 152400 flow [2022-12-06 17:26:58,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 134.47619047619048) internal successors, (2824), 21 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:26:58,758 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:26:58,764 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:26:58,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-06 17:26:58,765 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:26:58,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:26:58,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1900854301, now seen corresponding path program 8 times [2022-12-06 17:26:58,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:26:58,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120058306] [2022-12-06 17:26:58,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:26:58,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:26:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:26:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:26:59,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:26:59,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120058306] [2022-12-06 17:26:59,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120058306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:26:59,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:26:59,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-06 17:26:59,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421382834] [2022-12-06 17:26:59,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:26:59,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 17:26:59,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:26:59,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 17:26:59,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-12-06 17:26:59,429 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 207 [2022-12-06 17:26:59,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 5301 transitions, 152400 flow. Second operand has 20 states, 20 states have (on average 134.6) internal successors, (2692), 20 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:26:59,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:26:59,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 207 [2022-12-06 17:26:59,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:28:50,115 INFO L130 PetriNetUnfolder]: 40263/94428 cut-off events. [2022-12-06 17:28:50,116 INFO L131 PetriNetUnfolder]: For 1556468/1601855 co-relation queries the response was YES. [2022-12-06 17:28:50,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895864 conditions, 94428 events. 40263/94428 cut-off events. For 1556468/1601855 co-relation queries the response was YES. Maximal size of possible extension queue 3679. Compared 1205734 event pairs, 5260 based on Foata normal form. 242/87284 useless extension candidates. Maximal degree in co-relation 281735. Up to 39558 conditions per place. [2022-12-06 17:28:51,458 INFO L137 encePairwiseOnDemand]: 176/207 looper letters, 4750 selfloop transitions, 440 changer transitions 855/6380 dead transitions. [2022-12-06 17:28:51,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 6380 transitions, 193268 flow [2022-12-06 17:28:51,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-06 17:28:51,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-06 17:28:51,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4297 transitions. [2022-12-06 17:28:51,463 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6919484702093398 [2022-12-06 17:28:51,465 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 432 predicate places. [2022-12-06 17:28:51,466 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 6380 transitions, 193268 flow [2022-12-06 17:28:51,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 134.6) internal successors, (2692), 20 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:28:51,467 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:28:51,467 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:28:51,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-06 17:28:51,467 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:28:51,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:28:51,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1874177341, now seen corresponding path program 9 times [2022-12-06 17:28:51,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:28:51,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4812980] [2022-12-06 17:28:51,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:28:51,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:28:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:28:52,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:28:52,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:28:52,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4812980] [2022-12-06 17:28:52,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4812980] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:28:52,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:28:52,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:28:52,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020079659] [2022-12-06 17:28:52,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:28:52,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:28:52,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:28:52,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:28:52,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:28:52,178 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 207 [2022-12-06 17:28:52,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 6380 transitions, 193268 flow. Second operand has 19 states, 19 states have (on average 134.73684210526315) internal successors, (2560), 19 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:28:52,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:28:52,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 207 [2022-12-06 17:28:52,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:31:03,762 INFO L130 PetriNetUnfolder]: 40983/96218 cut-off events. [2022-12-06 17:31:03,763 INFO L131 PetriNetUnfolder]: For 1649138/1702248 co-relation queries the response was YES. [2022-12-06 17:31:04,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975428 conditions, 96218 events. 40983/96218 cut-off events. For 1649138/1702248 co-relation queries the response was YES. Maximal size of possible extension queue 3695. Compared 1231028 event pairs, 6400 based on Foata normal form. 245/88885 useless extension candidates. Maximal degree in co-relation 308259. Up to 39625 conditions per place. [2022-12-06 17:31:04,773 INFO L137 encePairwiseOnDemand]: 175/207 looper letters, 4929 selfloop transitions, 441 changer transitions 855/6560 dead transitions. [2022-12-06 17:31:04,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 6560 transitions, 208482 flow [2022-12-06 17:31:04,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-06 17:31:04,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-06 17:31:04,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3254 transitions. [2022-12-06 17:31:04,792 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6834698592732619 [2022-12-06 17:31:04,792 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 454 predicate places. [2022-12-06 17:31:04,793 INFO L495 AbstractCegarLoop]: Abstraction has has 637 places, 6560 transitions, 208482 flow [2022-12-06 17:31:04,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 134.73684210526315) internal successors, (2560), 19 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:31:04,793 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:31:04,793 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:31:04,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-06 17:31:04,794 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:31:04,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:31:04,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1965673899, now seen corresponding path program 10 times [2022-12-06 17:31:04,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:31:04,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486940635] [2022-12-06 17:31:04,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:31:04,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:31:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:31:05,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:31:05,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:31:05,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486940635] [2022-12-06 17:31:05,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486940635] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:31:05,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309861243] [2022-12-06 17:31:05,300 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 17:31:05,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:31:05,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:31:05,303 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) [2022-12-06 17:31:05,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-06 17:31:05,387 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 17:31:05,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:31:05,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-06 17:31:05,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:31:05,528 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-06 17:31:05,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-12-06 17:31:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:31:05,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:31:05,702 INFO L321 Elim1Store]: treesize reduction 30, result has 58.9 percent of original size [2022-12-06 17:31:05,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 50 [2022-12-06 17:31:05,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:31:05,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309861243] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:31:05,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:31:05,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 9, 9] total 32 [2022-12-06 17:31:05,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057283266] [2022-12-06 17:31:05,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:31:05,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-06 17:31:05,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:31:05,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-06 17:31:05,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=855, Unknown=0, NotChecked=0, Total=992 [2022-12-06 17:31:05,731 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 207 [2022-12-06 17:31:05,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 6560 transitions, 208482 flow. Second operand has 32 states, 32 states have (on average 135.125) internal successors, (4324), 32 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:31:05,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:31:05,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 207 [2022-12-06 17:31:05,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:33:34,325 INFO L130 PetriNetUnfolder]: 45571/105786 cut-off events. [2022-12-06 17:33:34,326 INFO L131 PetriNetUnfolder]: For 1874215/1932368 co-relation queries the response was YES. [2022-12-06 17:33:34,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142046 conditions, 105786 events. 45571/105786 cut-off events. For 1874215/1932368 co-relation queries the response was YES. Maximal size of possible extension queue 4235. Compared 1361730 event pairs, 5433 based on Foata normal form. 410/98053 useless extension candidates. Maximal degree in co-relation 364080. Up to 44980 conditions per place. [2022-12-06 17:33:35,474 INFO L137 encePairwiseOnDemand]: 172/207 looper letters, 5474 selfloop transitions, 1046 changer transitions 855/7710 dead transitions. [2022-12-06 17:33:35,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 7710 transitions, 255264 flow [2022-12-06 17:33:35,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-06 17:33:35,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-06 17:33:35,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 6659 transitions. [2022-12-06 17:33:35,497 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6844485558639121 [2022-12-06 17:33:35,497 INFO L294 CegarLoopForPetriNet]: 183 programPoint places, 500 predicate places. [2022-12-06 17:33:35,498 INFO L495 AbstractCegarLoop]: Abstraction has has 683 places, 7710 transitions, 255264 flow [2022-12-06 17:33:35,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 135.125) internal successors, (4324), 32 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:33:35,499 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:35,499 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:33:35,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-06 17:33:35,703 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,SelfDestructingSolverStorable25 [2022-12-06 17:33:35,703 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:35,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:35,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1677681965, now seen corresponding path program 11 times [2022-12-06 17:33:35,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:35,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872941306] [2022-12-06 17:33:35,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:35,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:33:36,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:36,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872941306] [2022-12-06 17:33:36,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872941306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:33:36,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:33:36,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:33:36,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549919111] [2022-12-06 17:33:36,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:33:36,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:33:36,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:36,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:33:36,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:33:36,181 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 207 [2022-12-06 17:33:36,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 683 places, 7710 transitions, 255264 flow. Second operand has 19 states, 19 states have (on average 134.73684210526315) internal successors, (2560), 19 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:33:36,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:36,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 207 [2022-12-06 17:33:36,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-06 17:34:32,978 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 17:34:33,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-06 17:34:33,245 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-06 17:34:33,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-06 17:34:33,245 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (19states, 132/207 universal loopers) in iteration 27,while PetriNetUnfolder was constructing finite prefix that currently has 356860 conditions, 27495 events (13616/27494 cut-off events. For 437809/449254 co-relation queries the response was YES. Maximal size of possible extension queue 3684. Compared 313995 event pairs, 672 based on Foata normal form. 190/29142 useless extension candidates. Maximal degree in co-relation 194347. Up to 10584 conditions per place.). [2022-12-06 17:34:33,247 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-06 17:34:33,247 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-06 17:34:33,251 INFO L458 BasicCegarLoop]: Path program histogram: [11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:33,274 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 17:34:33,275 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 17:34:33,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:34:33 BasicIcfg [2022-12-06 17:34:33,277 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 17:34:33,277 INFO L158 Benchmark]: Toolchain (without parser) took 801972.10ms. Allocated memory was 181.4MB in the beginning and 4.2GB in the end (delta: 4.0GB). Free memory was 156.5MB in the beginning and 992.3MB in the end (delta: -835.7MB). Peak memory consumption was 3.9GB. Max. memory is 8.0GB. [2022-12-06 17:34:33,277 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 181.4MB. Free memory is still 158.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 17:34:33,278 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.06ms. Allocated memory is still 181.4MB. Free memory was 156.3MB in the beginning and 144.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-06 17:34:33,278 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.71ms. Allocated memory is still 181.4MB. Free memory was 144.3MB in the beginning and 142.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 17:34:33,278 INFO L158 Benchmark]: Boogie Preprocessor took 32.18ms. Allocated memory is still 181.4MB. Free memory was 142.7MB in the beginning and 140.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 17:34:33,278 INFO L158 Benchmark]: RCFGBuilder took 418.38ms. Allocated memory is still 181.4MB. Free memory was 140.6MB in the beginning and 122.2MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-06 17:34:33,278 INFO L158 Benchmark]: TraceAbstraction took 801262.57ms. Allocated memory was 181.4MB in the beginning and 4.2GB in the end (delta: 4.0GB). Free memory was 121.7MB in the beginning and 992.3MB in the end (delta: -870.6MB). Peak memory consumption was 3.9GB. Max. memory is 8.0GB. [2022-12-06 17:34:33,279 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 181.4MB. Free memory is still 158.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 216.06ms. Allocated memory is still 181.4MB. Free memory was 156.3MB in the beginning and 144.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.71ms. Allocated memory is still 181.4MB. Free memory was 144.3MB in the beginning and 142.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.18ms. Allocated memory is still 181.4MB. Free memory was 142.7MB in the beginning and 140.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 418.38ms. Allocated memory is still 181.4MB. Free memory was 140.6MB in the beginning and 122.2MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 801262.57ms. Allocated memory was 181.4MB in the beginning and 4.2GB in the end (delta: 4.0GB). Free memory was 121.7MB in the beginning and 992.3MB in the end (delta: -870.6MB). Peak memory consumption was 3.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (19states, 132/207 universal loopers) in iteration 27,while PetriNetUnfolder was constructing finite prefix that currently has 356860 conditions, 27495 events (13616/27494 cut-off events. For 437809/449254 co-relation queries the response was YES. Maximal size of possible extension queue 3684. Compared 313995 event pairs, 672 based on Foata normal form. 190/29142 useless extension candidates. Maximal degree in co-relation 194347. Up to 10584 conditions per place.). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (19states, 132/207 universal loopers) in iteration 27,while PetriNetUnfolder was constructing finite prefix that currently has 356860 conditions, 27495 events (13616/27494 cut-off events. For 437809/449254 co-relation queries the response was YES. Maximal size of possible extension queue 3684. Compared 313995 event pairs, 672 based on Foata normal form. 190/29142 useless extension candidates. Maximal degree in co-relation 194347. Up to 10584 conditions per place.). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (19states, 132/207 universal loopers) in iteration 27,while PetriNetUnfolder was constructing finite prefix that currently has 356860 conditions, 27495 events (13616/27494 cut-off events. For 437809/449254 co-relation queries the response was YES. Maximal size of possible extension queue 3684. Compared 313995 event pairs, 672 based on Foata normal form. 190/29142 useless extension candidates. Maximal degree in co-relation 194347. Up to 10584 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 241 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 801.1s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 780.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9798 SdHoareTripleChecker+Valid, 7.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9798 mSDsluCounter, 13252 SdHoareTripleChecker+Invalid, 6.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11482 mSDsCounter, 276 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17357 IncrementalHoareTripleChecker+Invalid, 17633 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 276 mSolverCounterUnsat, 1770 mSDtfsCounter, 17357 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3292 GetRequests, 2382 SyntacticMatches, 14 SemanticMatches, 896 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9279 ImplicationChecksByTransitivity, 12.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=255264occurred in iteration=26, InterpolantAutomatonStates: 528, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 16.6s InterpolantComputationTime, 5105 NumberOfCodeBlocks, 5066 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 6227 ConstructedInterpolants, 13 QuantifiedInterpolants, 27501 SizeOfPredicates, 134 NumberOfNonLiveVariables, 2800 ConjunctsInSsa, 221 ConjunctsInUnsatCore, 44 InterpolantComputations, 24 PerfectInterpolantSequences, 58/88 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown