/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 21:03:00,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 21:03:00,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 21:03:00,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 21:03:00,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 21:03:00,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 21:03:00,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 21:03:00,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 21:03:00,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 21:03:00,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 21:03:00,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 21:03:00,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 21:03:00,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 21:03:00,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 21:03:00,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 21:03:00,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 21:03:00,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 21:03:00,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 21:03:00,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 21:03:00,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 21:03:00,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 21:03:00,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 21:03:00,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 21:03:00,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 21:03:00,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 21:03:00,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 21:03:00,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 21:03:00,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 21:03:00,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 21:03:00,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-12-05 21:03:00,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 21:03:00,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 21:03:00,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 21:03:00,634 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-SemanticLbe.epf [2022-12-05 21:03:00,660 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 21:03:00,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 21:03:00,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 21:03:00,661 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 21:03:00,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 21:03:00,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 21:03:00,663 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 21:03:00,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 21:03:00,663 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 21:03:00,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 21:03:00,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 21:03:00,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 21:03:00,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 21:03:00,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 21:03:00,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 21:03:00,664 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 21:03:00,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 21:03:00,664 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 21:03:00,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 21:03:00,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 21:03:00,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 21:03:00,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 21:03:00,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 21:03:00,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:03:00,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 21:03:00,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 21:03:00,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 21:03:00,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 21:03:00,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 21:03:00,666 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 21:03:00,666 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 21:03:00,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 21:03:00,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 21:03:00,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 21:03:00,956 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 21:03:00,956 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 21:03:00,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c [2022-12-05 21:03:01,899 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 21:03:02,079 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 21:03:02,079 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c [2022-12-05 21:03:02,084 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa34656f0/1f2d9dbe713240f69a3537327a4d8056/FLAGb42ee5b07 [2022-12-05 21:03:02,095 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa34656f0/1f2d9dbe713240f69a3537327a4d8056 [2022-12-05 21:03:02,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 21:03:02,099 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 21:03:02,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 21:03:02,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 21:03:02,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 21:03:02,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:03:02" (1/1) ... [2022-12-05 21:03:02,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf7ba5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:02, skipping insertion in model container [2022-12-05 21:03:02,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:03:02" (1/1) ... [2022-12-05 21:03:02,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 21:03:02,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 21:03:02,292 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-name-comparator-trans.wvr.c[4788,4801] [2022-12-05 21:03:02,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:03:02,306 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 21:03:02,339 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-name-comparator-trans.wvr.c[4788,4801] [2022-12-05 21:03:02,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:03:02,364 INFO L208 MainTranslator]: Completed translation [2022-12-05 21:03:02,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:02 WrapperNode [2022-12-05 21:03:02,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 21:03:02,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 21:03:02,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 21:03:02,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 21:03:02,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:02" (1/1) ... [2022-12-05 21:03:02,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:02" (1/1) ... [2022-12-05 21:03:02,425 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 297 [2022-12-05 21:03:02,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 21:03:02,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 21:03:02,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 21:03:02,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 21:03:02,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:02" (1/1) ... [2022-12-05 21:03:02,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:02" (1/1) ... [2022-12-05 21:03:02,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:02" (1/1) ... [2022-12-05 21:03:02,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:02" (1/1) ... [2022-12-05 21:03:02,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:02" (1/1) ... [2022-12-05 21:03:02,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:02" (1/1) ... [2022-12-05 21:03:02,454 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:02" (1/1) ... [2022-12-05 21:03:02,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:02" (1/1) ... [2022-12-05 21:03:02,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 21:03:02,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 21:03:02,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 21:03:02,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 21:03:02,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:02" (1/1) ... [2022-12-05 21:03:02,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:03:02,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:03:02,492 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) [2022-12-05 21:03:02,499 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 [2022-12-05 21:03:02,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 21:03:02,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 21:03:02,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 21:03:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 21:03:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 21:03:02,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 21:03:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 21:03:02,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 21:03:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 21:03:02,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 21:03:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 21:03:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 21:03:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 21:03:02,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 21:03:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 21:03:02,525 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 21:03:02,671 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 21:03:02,673 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 21:03:03,005 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 21:03:03,014 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 21:03:03,014 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-05 21:03:03,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:03:03 BoogieIcfgContainer [2022-12-05 21:03:03,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 21:03:03,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 21:03:03,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 21:03:03,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 21:03:03,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:03:02" (1/3) ... [2022-12-05 21:03:03,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa3981d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:03:03, skipping insertion in model container [2022-12-05 21:03:03,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:02" (2/3) ... [2022-12-05 21:03:03,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa3981d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:03:03, skipping insertion in model container [2022-12-05 21:03:03,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:03:03" (3/3) ... [2022-12-05 21:03:03,046 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2022-12-05 21:03:03,058 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 21:03:03,059 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 21:03:03,059 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 21:03:03,201 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-05 21:03:03,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 341 transitions, 706 flow [2022-12-05 21:03:03,375 INFO L130 PetriNetUnfolder]: 26/338 cut-off events. [2022-12-05 21:03:03,378 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 21:03:03,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 338 events. 26/338 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 791 event pairs, 0 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 250. Up to 2 conditions per place. [2022-12-05 21:03:03,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 341 transitions, 706 flow [2022-12-05 21:03:03,407 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 328 transitions, 674 flow [2022-12-05 21:03:03,409 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 21:03:03,424 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 312 places, 328 transitions, 674 flow [2022-12-05 21:03:03,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 328 transitions, 674 flow [2022-12-05 21:03:03,477 INFO L130 PetriNetUnfolder]: 26/328 cut-off events. [2022-12-05 21:03:03,477 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 21:03:03,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 328 events. 26/328 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 786 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 250. Up to 2 conditions per place. [2022-12-05 21:03:03,502 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 312 places, 328 transitions, 674 flow [2022-12-05 21:03:03,502 INFO L188 LiptonReduction]: Number of co-enabled transitions 27528 [2022-12-05 21:03:16,410 INFO L203 LiptonReduction]: Total number of compositions: 304 [2022-12-05 21:03:16,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 21:03:16,425 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;@5aac7b44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 21:03:16,426 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 21:03:16,430 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2022-12-05 21:03:16,430 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 21:03:16,430 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:16,431 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] [2022-12-05 21:03:16,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:16,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:16,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1174101351, now seen corresponding path program 1 times [2022-12-05 21:03:16,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:16,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020783366] [2022-12-05 21:03:16,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:16,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:03:16,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:16,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020783366] [2022-12-05 21:03:16,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020783366] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:16,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:16,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 21:03:16,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343935714] [2022-12-05 21:03:16,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:16,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 21:03:16,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:16,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 21:03:16,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 21:03:16,764 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:03:16,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:16,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:16,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:03:16,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:16,860 INFO L130 PetriNetUnfolder]: 221/328 cut-off events. [2022-12-05 21:03:16,861 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-12-05 21:03:16,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 328 events. 221/328 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 771 event pairs, 138 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 534. Up to 328 conditions per place. [2022-12-05 21:03:16,865 INFO L137 encePairwiseOnDemand]: 21/24 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2022-12-05 21:03:16,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 118 flow [2022-12-05 21:03:16,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 21:03:16,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 21:03:16,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 26 transitions. [2022-12-05 21:03:16,876 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2022-12-05 21:03:16,877 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 3 states and 26 transitions. [2022-12-05 21:03:16,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 118 flow [2022-12-05 21:03:16,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 106 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-05 21:03:16,883 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 66 flow [2022-12-05 21:03:16,884 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2022-12-05 21:03:16,887 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2022-12-05 21:03:16,888 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 66 flow [2022-12-05 21:03:16,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:16,889 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:16,889 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] [2022-12-05 21:03:16,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 21:03:16,889 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:16,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:16,892 INFO L85 PathProgramCache]: Analyzing trace with hash 972370288, now seen corresponding path program 1 times [2022-12-05 21:03:16,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:16,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961972934] [2022-12-05 21:03:16,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:16,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:17,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:03:17,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:17,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961972934] [2022-12-05 21:03:17,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961972934] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:03:17,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097868805] [2022-12-05 21:03:17,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:17,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:03:17,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:03:17,031 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) [2022-12-05 21:03:17,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 21:03:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:17,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-05 21:03:17,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:03:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:03:17,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:03:17,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:03:17,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097868805] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:03:17,192 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:03:17,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-12-05 21:03:17,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950767723] [2022-12-05 21:03:17,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:03:17,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 21:03:17,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:17,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 21:03:17,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-12-05 21:03:17,194 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:03:17,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 66 flow. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:17,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:17,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:03:17,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:17,314 INFO L130 PetriNetUnfolder]: 221/330 cut-off events. [2022-12-05 21:03:17,315 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-05 21:03:17,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 330 events. 221/330 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 775 event pairs, 138 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 673. Up to 328 conditions per place. [2022-12-05 21:03:17,317 INFO L137 encePairwiseOnDemand]: 21/24 looper letters, 23 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2022-12-05 21:03:17,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 128 flow [2022-12-05 21:03:17,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:03:17,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:03:17,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2022-12-05 21:03:17,319 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.24166666666666667 [2022-12-05 21:03:17,319 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 66 flow. Second operand 5 states and 29 transitions. [2022-12-05 21:03:17,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 128 flow [2022-12-05 21:03:17,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 124 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-05 21:03:17,320 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 88 flow [2022-12-05 21:03:17,320 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2022-12-05 21:03:17,321 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2022-12-05 21:03:17,322 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 88 flow [2022-12-05 21:03:17,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:17,325 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:17,325 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:03:17,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-05 21:03:17,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:03:17,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:17,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:17,532 INFO L85 PathProgramCache]: Analyzing trace with hash 242031376, now seen corresponding path program 2 times [2022-12-05 21:03:17,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:17,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703812087] [2022-12-05 21:03:17,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:17,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:17,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:17,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703812087] [2022-12-05 21:03:17,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703812087] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:17,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:17,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:03:17,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939892028] [2022-12-05 21:03:17,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:17,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 21:03:17,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:17,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 21:03:17,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-05 21:03:17,823 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:03:17,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 88 flow. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:17,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:17,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:03:17,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:17,983 INFO L130 PetriNetUnfolder]: 381/567 cut-off events. [2022-12-05 21:03:17,984 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-05 21:03:17,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 567 events. 381/567 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1742 event pairs, 138 based on Foata normal form. 1/418 useless extension candidates. Maximal degree in co-relation 1148. Up to 331 conditions per place. [2022-12-05 21:03:17,986 INFO L137 encePairwiseOnDemand]: 20/24 looper letters, 37 selfloop transitions, 2 changer transitions 17/56 dead transitions. [2022-12-05 21:03:17,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 56 transitions, 265 flow [2022-12-05 21:03:17,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 21:03:17,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 21:03:17,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 54 transitions. [2022-12-05 21:03:17,987 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5625 [2022-12-05 21:03:17,988 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 88 flow. Second operand 4 states and 54 transitions. [2022-12-05 21:03:17,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 56 transitions, 265 flow [2022-12-05 21:03:17,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 56 transitions, 255 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-05 21:03:17,989 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 92 flow [2022-12-05 21:03:17,989 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2022-12-05 21:03:17,990 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2022-12-05 21:03:17,990 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 92 flow [2022-12-05 21:03:17,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:17,990 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:17,990 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:03:17,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 21:03:17,991 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:17,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:17,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1538061267, now seen corresponding path program 1 times [2022-12-05 21:03:17,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:17,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654697259] [2022-12-05 21:03:17,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:17,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:18,335 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:18,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:18,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654697259] [2022-12-05 21:03:18,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654697259] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:18,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:18,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 21:03:18,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493722516] [2022-12-05 21:03:18,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:18,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:03:18,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:18,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:03:18,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:03:18,337 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:03:18,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 92 flow. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:18,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:18,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:03:18,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:18,603 INFO L130 PetriNetUnfolder]: 396/591 cut-off events. [2022-12-05 21:03:18,604 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2022-12-05 21:03:18,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 591 events. 396/591 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1924 event pairs, 20 based on Foata normal form. 0/441 useless extension candidates. Maximal degree in co-relation 1374. Up to 264 conditions per place. [2022-12-05 21:03:18,606 INFO L137 encePairwiseOnDemand]: 16/24 looper letters, 77 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2022-12-05 21:03:18,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 84 transitions, 398 flow [2022-12-05 21:03:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 21:03:18,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 21:03:18,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2022-12-05 21:03:18,607 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2022-12-05 21:03:18,608 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 92 flow. Second operand 7 states and 82 transitions. [2022-12-05 21:03:18,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 84 transitions, 398 flow [2022-12-05 21:03:18,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 84 transitions, 390 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-05 21:03:18,609 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 133 flow [2022-12-05 21:03:18,610 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=133, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2022-12-05 21:03:18,610 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2022-12-05 21:03:18,610 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 133 flow [2022-12-05 21:03:18,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:18,610 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:18,611 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:03:18,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 21:03:18,611 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:18,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:18,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1413644111, now seen corresponding path program 2 times [2022-12-05 21:03:18,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:18,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289593024] [2022-12-05 21:03:18,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:18,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:19,030 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:19,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:19,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289593024] [2022-12-05 21:03:19,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289593024] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:19,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:19,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 21:03:19,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833363669] [2022-12-05 21:03:19,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:19,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 21:03:19,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:19,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 21:03:19,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-05 21:03:19,035 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:03:19,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 133 flow. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:19,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:19,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:03:19,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:19,349 INFO L130 PetriNetUnfolder]: 623/939 cut-off events. [2022-12-05 21:03:19,349 INFO L131 PetriNetUnfolder]: For 580/580 co-relation queries the response was YES. [2022-12-05 21:03:19,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2759 conditions, 939 events. 623/939 cut-off events. For 580/580 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3368 event pairs, 163 based on Foata normal form. 1/718 useless extension candidates. Maximal degree in co-relation 2731. Up to 438 conditions per place. [2022-12-05 21:03:19,354 INFO L137 encePairwiseOnDemand]: 18/24 looper letters, 56 selfloop transitions, 6 changer transitions 21/83 dead transitions. [2022-12-05 21:03:19,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 83 transitions, 467 flow [2022-12-05 21:03:19,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 21:03:19,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 21:03:19,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2022-12-05 21:03:19,355 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2022-12-05 21:03:19,355 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 133 flow. Second operand 6 states and 73 transitions. [2022-12-05 21:03:19,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 83 transitions, 467 flow [2022-12-05 21:03:19,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 83 transitions, 453 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-05 21:03:19,358 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 164 flow [2022-12-05 21:03:19,358 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2022-12-05 21:03:19,359 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2022-12-05 21:03:19,359 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 164 flow [2022-12-05 21:03:19,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:19,359 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:19,359 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:03:19,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 21:03:19,359 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:19,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:19,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1221392349, now seen corresponding path program 3 times [2022-12-05 21:03:19,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:19,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133784027] [2022-12-05 21:03:19,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:19,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-05 21:03:19,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:19,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133784027] [2022-12-05 21:03:19,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133784027] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:19,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:19,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:03:19,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819072571] [2022-12-05 21:03:19,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:19,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:03:19,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:19,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:03:19,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:03:19,548 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:03:19,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 164 flow. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:19,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:19,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:03:19,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:19,718 INFO L130 PetriNetUnfolder]: 570/847 cut-off events. [2022-12-05 21:03:19,718 INFO L131 PetriNetUnfolder]: For 1046/1046 co-relation queries the response was YES. [2022-12-05 21:03:19,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2873 conditions, 847 events. 570/847 cut-off events. For 1046/1046 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2906 event pairs, 163 based on Foata normal form. 2/683 useless extension candidates. Maximal degree in co-relation 2854. Up to 438 conditions per place. [2022-12-05 21:03:19,723 INFO L137 encePairwiseOnDemand]: 20/24 looper letters, 39 selfloop transitions, 4 changer transitions 18/61 dead transitions. [2022-12-05 21:03:19,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 376 flow [2022-12-05 21:03:19,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 21:03:19,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 21:03:19,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 51 transitions. [2022-12-05 21:03:19,724 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.53125 [2022-12-05 21:03:19,724 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 164 flow. Second operand 4 states and 51 transitions. [2022-12-05 21:03:19,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 376 flow [2022-12-05 21:03:19,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 358 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-12-05 21:03:19,727 INFO L231 Difference]: Finished difference. Result has 49 places, 31 transitions, 132 flow [2022-12-05 21:03:19,727 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=49, PETRI_TRANSITIONS=31} [2022-12-05 21:03:19,728 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2022-12-05 21:03:19,728 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 31 transitions, 132 flow [2022-12-05 21:03:19,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:19,728 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:19,728 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:03:19,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 21:03:19,728 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:19,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:19,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1456359398, now seen corresponding path program 1 times [2022-12-05 21:03:19,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:19,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144058273] [2022-12-05 21:03:19,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:19,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:20,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:03:20,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:20,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144058273] [2022-12-05 21:03:20,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144058273] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:03:20,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785792722] [2022-12-05 21:03:20,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:20,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:03:20,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:03:20,906 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) [2022-12-05 21:03:20,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 21:03:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:21,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-05 21:03:21,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:03:21,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 139 [2022-12-05 21:03:21,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:21,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:03:22,641 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:03:22,642 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 182 treesize of output 114 [2022-12-05 21:03:22,857 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:22,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785792722] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:03:22,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:03:22,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 32 [2022-12-05 21:03:22,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661775664] [2022-12-05 21:03:22,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:03:22,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-05 21:03:22,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:22,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-05 21:03:22,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2022-12-05 21:03:22,859 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:03:22,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 31 transitions, 132 flow. Second operand has 33 states, 32 states have (on average 2.21875) internal successors, (71), 33 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:22,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:22,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:03:22,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:28,695 INFO L130 PetriNetUnfolder]: 1481/2189 cut-off events. [2022-12-05 21:03:28,696 INFO L131 PetriNetUnfolder]: For 1622/1622 co-relation queries the response was YES. [2022-12-05 21:03:28,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6526 conditions, 2189 events. 1481/2189 cut-off events. For 1622/1622 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9313 event pairs, 83 based on Foata normal form. 3/1604 useless extension candidates. Maximal degree in co-relation 6495. Up to 551 conditions per place. [2022-12-05 21:03:28,706 INFO L137 encePairwiseOnDemand]: 12/24 looper letters, 204 selfloop transitions, 99 changer transitions 32/335 dead transitions. [2022-12-05 21:03:28,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 335 transitions, 1872 flow [2022-12-05 21:03:28,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-05 21:03:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-05 21:03:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 319 transitions. [2022-12-05 21:03:28,709 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.35923423423423423 [2022-12-05 21:03:28,709 INFO L175 Difference]: Start difference. First operand has 49 places, 31 transitions, 132 flow. Second operand 37 states and 319 transitions. [2022-12-05 21:03:28,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 335 transitions, 1872 flow [2022-12-05 21:03:28,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 335 transitions, 1648 flow, removed 88 selfloop flow, removed 6 redundant places. [2022-12-05 21:03:28,721 INFO L231 Difference]: Finished difference. Result has 95 places, 125 transitions, 864 flow [2022-12-05 21:03:28,721 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=864, PETRI_PLACES=95, PETRI_TRANSITIONS=125} [2022-12-05 21:03:28,722 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2022-12-05 21:03:28,722 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 125 transitions, 864 flow [2022-12-05 21:03:28,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.21875) internal successors, (71), 33 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:28,722 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:28,722 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:03:28,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 21:03:28,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-05 21:03:28,930 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:28,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:28,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1488275074, now seen corresponding path program 2 times [2022-12-05 21:03:28,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:28,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899486373] [2022-12-05 21:03:28,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:28,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:29,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:29,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899486373] [2022-12-05 21:03:29,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899486373] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:03:29,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829629218] [2022-12-05 21:03:29,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 21:03:29,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:03:29,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:03:29,727 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) [2022-12-05 21:03:29,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 21:03:29,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 21:03:29,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:03:29,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-05 21:03:29,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:03:30,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 139 [2022-12-05 21:03:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:30,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:03:31,514 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:03:31,515 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 191 treesize of output 113 [2022-12-05 21:03:31,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:31,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829629218] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:03:31,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:03:31,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 27 [2022-12-05 21:03:31,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36525293] [2022-12-05 21:03:31,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:03:31,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-05 21:03:31,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:31,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-05 21:03:31,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2022-12-05 21:03:31,588 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:03:31,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 125 transitions, 864 flow. Second operand has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 28 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:31,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:31,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:03:31,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:54,586 INFO L130 PetriNetUnfolder]: 5092/8072 cut-off events. [2022-12-05 21:03:54,586 INFO L131 PetriNetUnfolder]: For 93199/93199 co-relation queries the response was YES. [2022-12-05 21:03:54,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46231 conditions, 8072 events. 5092/8072 cut-off events. For 93199/93199 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 49745 event pairs, 442 based on Foata normal form. 17/7798 useless extension candidates. Maximal degree in co-relation 46182. Up to 2481 conditions per place. [2022-12-05 21:03:54,648 INFO L137 encePairwiseOnDemand]: 11/24 looper letters, 680 selfloop transitions, 392 changer transitions 89/1161 dead transitions. [2022-12-05 21:03:54,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 1161 transitions, 10079 flow [2022-12-05 21:03:54,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-05 21:03:54,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2022-12-05 21:03:54,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 935 transitions. [2022-12-05 21:03:54,651 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4058159722222222 [2022-12-05 21:03:54,651 INFO L175 Difference]: Start difference. First operand has 95 places, 125 transitions, 864 flow. Second operand 96 states and 935 transitions. [2022-12-05 21:03:54,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 1161 transitions, 10079 flow [2022-12-05 21:03:54,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 1161 transitions, 9162 flow, removed 420 selfloop flow, removed 7 redundant places. [2022-12-05 21:03:54,831 INFO L231 Difference]: Finished difference. Result has 227 places, 528 transitions, 5993 flow [2022-12-05 21:03:54,832 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=96, PETRI_FLOW=5993, PETRI_PLACES=227, PETRI_TRANSITIONS=528} [2022-12-05 21:03:54,832 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2022-12-05 21:03:54,832 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 528 transitions, 5993 flow [2022-12-05 21:03:54,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 28 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:54,833 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:54,833 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:03:54,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 21:03:55,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:03:55,037 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:55,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:55,038 INFO L85 PathProgramCache]: Analyzing trace with hash 405168918, now seen corresponding path program 3 times [2022-12-05 21:03:55,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:55,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631183976] [2022-12-05 21:03:55,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:55,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:03:56,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:56,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631183976] [2022-12-05 21:03:56,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631183976] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:03:56,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905264948] [2022-12-05 21:03:56,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 21:03:56,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:03:56,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:03:56,080 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) [2022-12-05 21:03:56,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 21:03:56,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-05 21:03:56,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:03:56,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-05 21:03:56,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:03:56,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 142 [2022-12-05 21:03:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:03:57,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:03:58,122 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:03:58,123 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 186 treesize of output 108 [2022-12-05 21:03:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:58,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905264948] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:03:58,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:03:58,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 9] total 34 [2022-12-05 21:03:58,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178700133] [2022-12-05 21:03:58,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:03:58,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-05 21:03:58,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:58,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-05 21:03:58,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1069, Unknown=0, NotChecked=0, Total=1190 [2022-12-05 21:03:58,301 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:03:58,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 528 transitions, 5993 flow. Second operand has 35 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 35 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:58,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:58,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:03:58,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:04:17,018 INFO L130 PetriNetUnfolder]: 10186/16616 cut-off events. [2022-12-05 21:04:17,018 INFO L131 PetriNetUnfolder]: For 1119847/1119847 co-relation queries the response was YES. [2022-12-05 21:04:17,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156782 conditions, 16616 events. 10186/16616 cut-off events. For 1119847/1119847 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 121435 event pairs, 870 based on Foata normal form. 33/16430 useless extension candidates. Maximal degree in co-relation 156690. Up to 6004 conditions per place. [2022-12-05 21:04:17,204 INFO L137 encePairwiseOnDemand]: 12/24 looper letters, 759 selfloop transitions, 714 changer transitions 149/1622 dead transitions. [2022-12-05 21:04:17,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 1622 transitions, 23876 flow [2022-12-05 21:04:17,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-12-05 21:04:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2022-12-05 21:04:17,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 613 transitions. [2022-12-05 21:04:17,208 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.32745726495726496 [2022-12-05 21:04:17,208 INFO L175 Difference]: Start difference. First operand has 227 places, 528 transitions, 5993 flow. Second operand 78 states and 613 transitions. [2022-12-05 21:04:17,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 1622 transitions, 23876 flow [2022-12-05 21:04:24,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 1622 transitions, 18093 flow, removed 2855 selfloop flow, removed 12 redundant places. [2022-12-05 21:04:24,211 INFO L231 Difference]: Finished difference. Result has 328 places, 971 transitions, 11374 flow [2022-12-05 21:04:24,211 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3865, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=11374, PETRI_PLACES=328, PETRI_TRANSITIONS=971} [2022-12-05 21:04:24,212 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2022-12-05 21:04:24,212 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 971 transitions, 11374 flow [2022-12-05 21:04:24,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 35 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:04:24,212 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:04:24,212 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:04:24,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-05 21:04:24,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:04:24,417 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:04:24,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:04:24,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1347986446, now seen corresponding path program 4 times [2022-12-05 21:04:24,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:04:24,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131242532] [2022-12-05 21:04:24,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:04:24,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:04:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:04:24,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:04:24,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:04:24,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131242532] [2022-12-05 21:04:24,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131242532] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:04:24,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729036848] [2022-12-05 21:04:24,986 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-05 21:04:24,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:04:24,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:04:24,987 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) [2022-12-05 21:04:25,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-05 21:04:25,121 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-05 21:04:25,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:04:25,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-05 21:04:25,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:04:25,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 87 [2022-12-05 21:04:25,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:04:25,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:04:25,887 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-12-05 21:04:25,887 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 137 treesize of output 74 [2022-12-05 21:04:25,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:04:25,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729036848] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:04:25,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:04:25,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 21 [2022-12-05 21:04:25,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270649077] [2022-12-05 21:04:25,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:04:25,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-05 21:04:25,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:04:25,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-05 21:04:25,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2022-12-05 21:04:25,940 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:04:25,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 971 transitions, 11374 flow. Second operand has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 22 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:04:25,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:04:25,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:04:25,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:04:33,422 INFO L130 PetriNetUnfolder]: 11488/19001 cut-off events. [2022-12-05 21:04:33,422 INFO L131 PetriNetUnfolder]: For 1886268/1886268 co-relation queries the response was YES. [2022-12-05 21:04:33,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193390 conditions, 19001 events. 11488/19001 cut-off events. For 1886268/1886268 co-relation queries the response was YES. Maximal size of possible extension queue 1015. Compared 143137 event pairs, 2362 based on Foata normal form. 31/18897 useless extension candidates. Maximal degree in co-relation 193258. Up to 8568 conditions per place. [2022-12-05 21:04:33,666 INFO L137 encePairwiseOnDemand]: 14/24 looper letters, 885 selfloop transitions, 400 changer transitions 190/1475 dead transitions. [2022-12-05 21:04:33,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 1475 transitions, 21046 flow [2022-12-05 21:04:33,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-05 21:04:33,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-05 21:04:33,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 214 transitions. [2022-12-05 21:04:33,667 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4246031746031746 [2022-12-05 21:04:33,667 INFO L175 Difference]: Start difference. First operand has 328 places, 971 transitions, 11374 flow. Second operand 21 states and 214 transitions. [2022-12-05 21:04:33,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 1475 transitions, 21046 flow [2022-12-05 21:04:40,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 1475 transitions, 19081 flow, removed 979 selfloop flow, removed 13 redundant places. [2022-12-05 21:04:40,786 INFO L231 Difference]: Finished difference. Result has 335 places, 1051 transitions, 12051 flow [2022-12-05 21:04:40,787 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9951, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=971, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=319, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=12051, PETRI_PLACES=335, PETRI_TRANSITIONS=1051} [2022-12-05 21:04:40,788 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2022-12-05 21:04:40,788 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 1051 transitions, 12051 flow [2022-12-05 21:04:40,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 22 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:04:40,788 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:04:40,788 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:04:40,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-05 21:04:40,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-05 21:04:40,992 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:04:40,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:04:40,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1156205962, now seen corresponding path program 5 times [2022-12-05 21:04:40,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:04:40,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391733597] [2022-12-05 21:04:40,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:04:40,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:04:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:04:41,689 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:04:41,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:04:41,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391733597] [2022-12-05 21:04:41,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391733597] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:04:41,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598447622] [2022-12-05 21:04:41,690 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-05 21:04:41,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:04:41,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:04:41,696 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) [2022-12-05 21:04:41,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-05 21:04:41,799 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-05 21:04:41,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:04:41,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-05 21:04:41,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:04:42,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 45 [2022-12-05 21:04:42,209 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:04:42,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:04:42,663 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-12-05 21:04:42,663 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 194 treesize of output 99 [2022-12-05 21:04:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:04:42,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598447622] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:04:42,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:04:42,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 23 [2022-12-05 21:04:42,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727435855] [2022-12-05 21:04:42,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:04:42,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-05 21:04:42,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:04:42,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-05 21:04:42,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-12-05 21:04:42,723 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:04:42,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 1051 transitions, 12051 flow. Second operand has 24 states, 23 states have (on average 2.608695652173913) internal successors, (60), 24 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:04:42,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:04:42,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:04:42,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:04:54,574 INFO L130 PetriNetUnfolder]: 13308/21888 cut-off events. [2022-12-05 21:04:54,575 INFO L131 PetriNetUnfolder]: For 2150856/2150856 co-relation queries the response was YES. [2022-12-05 21:04:54,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223001 conditions, 21888 events. 13308/21888 cut-off events. For 2150856/2150856 co-relation queries the response was YES. Maximal size of possible extension queue 1165. Compared 167182 event pairs, 2047 based on Foata normal form. 46/21934 useless extension candidates. Maximal degree in co-relation 222870. Up to 7125 conditions per place. [2022-12-05 21:04:54,998 INFO L137 encePairwiseOnDemand]: 11/24 looper letters, 954 selfloop transitions, 562 changer transitions 261/1777 dead transitions. [2022-12-05 21:04:54,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 1777 transitions, 24624 flow [2022-12-05 21:04:54,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-05 21:04:54,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-05 21:04:55,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 510 transitions. [2022-12-05 21:04:55,002 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4427083333333333 [2022-12-05 21:04:55,002 INFO L175 Difference]: Start difference. First operand has 335 places, 1051 transitions, 12051 flow. Second operand 48 states and 510 transitions. [2022-12-05 21:04:55,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 1777 transitions, 24624 flow [2022-12-05 21:05:03,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 1777 transitions, 24181 flow, removed 220 selfloop flow, removed 8 redundant places. [2022-12-05 21:05:03,043 INFO L231 Difference]: Finished difference. Result has 398 places, 1117 transitions, 14812 flow [2022-12-05 21:05:03,043 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11846, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1051, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=420, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=14812, PETRI_PLACES=398, PETRI_TRANSITIONS=1117} [2022-12-05 21:05:03,044 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 368 predicate places. [2022-12-05 21:05:03,044 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 1117 transitions, 14812 flow [2022-12-05 21:05:03,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.608695652173913) internal successors, (60), 24 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:05:03,044 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:05:03,044 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:05:03,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-05 21:05:03,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:05:03,249 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:05:03,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:05:03,249 INFO L85 PathProgramCache]: Analyzing trace with hash 370668748, now seen corresponding path program 6 times [2022-12-05 21:05:03,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:05:03,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347746572] [2022-12-05 21:05:03,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:05:03,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:05:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:05:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:05:03,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:05:03,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347746572] [2022-12-05 21:05:03,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347746572] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:05:03,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541076480] [2022-12-05 21:05:03,966 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-05 21:05:03,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:05:03,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:05:03,967 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) [2022-12-05 21:05:03,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-05 21:05:04,199 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-05 21:05:04,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:05:04,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-05 21:05:04,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:05:04,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 21:05:04,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2022-12-05 21:05:04,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 97 [2022-12-05 21:05:04,969 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:05:04,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:05:05,761 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:05:05,762 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 215 treesize of output 125 [2022-12-05 21:05:05,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-12-05 21:05:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:05:05,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541076480] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:05:05,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:05:05,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 31 [2022-12-05 21:05:05,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235277372] [2022-12-05 21:05:05,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:05:05,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-05 21:05:05,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:05:05,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-05 21:05:05,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=937, Unknown=6, NotChecked=0, Total=1056 [2022-12-05 21:05:05,937 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:05:05,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 1117 transitions, 14812 flow. Second operand has 33 states, 32 states have (on average 2.15625) internal successors, (69), 32 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:05:05,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:05:05,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:05:05,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:05:23,052 INFO L130 PetriNetUnfolder]: 14966/24604 cut-off events. [2022-12-05 21:05:23,053 INFO L131 PetriNetUnfolder]: For 2762318/2762318 co-relation queries the response was YES. [2022-12-05 21:05:23,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272106 conditions, 24604 events. 14966/24604 cut-off events. For 2762318/2762318 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 191141 event pairs, 1964 based on Foata normal form. 20/24624 useless extension candidates. Maximal degree in co-relation 271970. Up to 8301 conditions per place. [2022-12-05 21:05:23,451 INFO L137 encePairwiseOnDemand]: 13/24 looper letters, 1009 selfloop transitions, 825 changer transitions 106/1940 dead transitions. [2022-12-05 21:05:23,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 1940 transitions, 32146 flow [2022-12-05 21:05:23,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-05 21:05:23,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-05 21:05:23,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 422 transitions. [2022-12-05 21:05:23,454 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3516666666666667 [2022-12-05 21:05:23,454 INFO L175 Difference]: Start difference. First operand has 398 places, 1117 transitions, 14812 flow. Second operand 50 states and 422 transitions. [2022-12-05 21:05:23,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 1940 transitions, 32146 flow [2022-12-05 21:05:37,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 1940 transitions, 29963 flow, removed 997 selfloop flow, removed 24 redundant places. [2022-12-05 21:05:37,282 INFO L231 Difference]: Finished difference. Result has 423 places, 1355 transitions, 20143 flow [2022-12-05 21:05:37,283 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=14061, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=613, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=20143, PETRI_PLACES=423, PETRI_TRANSITIONS=1355} [2022-12-05 21:05:37,283 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 393 predicate places. [2022-12-05 21:05:37,284 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 1355 transitions, 20143 flow [2022-12-05 21:05:37,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.15625) internal successors, (69), 32 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:05:37,284 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:05:37,284 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:05:37,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-05 21:05:37,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:05:37,487 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:05:37,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:05:37,488 INFO L85 PathProgramCache]: Analyzing trace with hash -55005688, now seen corresponding path program 7 times [2022-12-05 21:05:37,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:05:37,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432072931] [2022-12-05 21:05:37,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:05:37,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:05:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:05:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:05:38,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:05:38,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432072931] [2022-12-05 21:05:38,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432072931] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:05:38,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377153973] [2022-12-05 21:05:38,073 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-05 21:05:38,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:05:38,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:05:38,075 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) [2022-12-05 21:05:38,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-05 21:05:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:05:38,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-05 21:05:38,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:05:38,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 21:05:38,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2022-12-05 21:05:38,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 21:05:38,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2022-12-05 21:05:38,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 110 [2022-12-05 21:05:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:05:38,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:05:39,470 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:05:39,470 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 194 treesize of output 136 [2022-12-05 21:05:39,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2022-12-05 21:05:39,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 46 [2022-12-05 21:05:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:05:39,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377153973] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:05:39,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:05:39,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 33 [2022-12-05 21:05:39,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155152673] [2022-12-05 21:05:39,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:05:39,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-05 21:05:39,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:05:39,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-05 21:05:39,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1055, Unknown=6, NotChecked=0, Total=1190 [2022-12-05 21:05:39,633 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:05:39,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 1355 transitions, 20143 flow. Second operand has 35 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 34 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:05:39,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:05:39,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:05:39,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:05:57,496 INFO L130 PetriNetUnfolder]: 21669/36059 cut-off events. [2022-12-05 21:05:57,496 INFO L131 PetriNetUnfolder]: For 5126562/5126562 co-relation queries the response was YES. [2022-12-05 21:05:58,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445579 conditions, 36059 events. 21669/36059 cut-off events. For 5126562/5126562 co-relation queries the response was YES. Maximal size of possible extension queue 1982. Compared 300383 event pairs, 2731 based on Foata normal form. 35/36094 useless extension candidates. Maximal degree in co-relation 445437. Up to 12419 conditions per place. [2022-12-05 21:05:58,386 INFO L137 encePairwiseOnDemand]: 13/24 looper letters, 1565 selfloop transitions, 739 changer transitions 82/2386 dead transitions. [2022-12-05 21:05:58,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 2386 transitions, 42506 flow [2022-12-05 21:05:58,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-05 21:05:58,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-05 21:05:58,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 280 transitions. [2022-12-05 21:05:58,388 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.40229885057471265 [2022-12-05 21:05:58,388 INFO L175 Difference]: Start difference. First operand has 423 places, 1355 transitions, 20143 flow. Second operand 29 states and 280 transitions. [2022-12-05 21:05:58,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 2386 transitions, 42506 flow [2022-12-05 21:06:44,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 2386 transitions, 39874 flow, removed 1145 selfloop flow, removed 14 redundant places. [2022-12-05 21:06:44,050 INFO L231 Difference]: Finished difference. Result has 446 places, 1622 transitions, 25292 flow [2022-12-05 21:06:44,051 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=18349, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=491, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=818, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=25292, PETRI_PLACES=446, PETRI_TRANSITIONS=1622} [2022-12-05 21:06:44,052 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 416 predicate places. [2022-12-05 21:06:44,052 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 1622 transitions, 25292 flow [2022-12-05 21:06:44,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 34 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:06:44,052 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:06:44,052 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:06:44,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-05 21:06:44,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-05 21:06:44,253 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:06:44,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:06:44,253 INFO L85 PathProgramCache]: Analyzing trace with hash 151380656, now seen corresponding path program 8 times [2022-12-05 21:06:44,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:06:44,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827037417] [2022-12-05 21:06:44,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:06:44,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:06:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:06:44,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:06:44,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:06:44,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827037417] [2022-12-05 21:06:44,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827037417] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:06:44,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614997712] [2022-12-05 21:06:44,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 21:06:44,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:06:44,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:06:44,863 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) [2022-12-05 21:06:44,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-05 21:06:44,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 21:06:44,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:06:44,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-05 21:06:44,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:06:45,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 113 [2022-12-05 21:06:45,416 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:06:45,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:06:45,829 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:06:45,830 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 203 treesize of output 111 [2022-12-05 21:06:45,934 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:06:45,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614997712] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:06:45,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:06:45,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 23 [2022-12-05 21:06:45,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704632118] [2022-12-05 21:06:45,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:06:45,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-05 21:06:45,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:06:45,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-05 21:06:45,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2022-12-05 21:06:45,935 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:06:45,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 1622 transitions, 25292 flow. Second operand has 24 states, 23 states have (on average 2.608695652173913) internal successors, (60), 24 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:06:45,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:06:45,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:06:45,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:07:10,395 INFO L130 PetriNetUnfolder]: 26329/44277 cut-off events. [2022-12-05 21:07:10,395 INFO L131 PetriNetUnfolder]: For 6764260/6764260 co-relation queries the response was YES. [2022-12-05 21:07:11,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 567200 conditions, 44277 events. 26329/44277 cut-off events. For 6764260/6764260 co-relation queries the response was YES. Maximal size of possible extension queue 2488. Compared 386226 event pairs, 5071 based on Foata normal form. 88/44365 useless extension candidates. Maximal degree in co-relation 567056. Up to 15802 conditions per place. [2022-12-05 21:07:11,516 INFO L137 encePairwiseOnDemand]: 12/24 looper letters, 1581 selfloop transitions, 776 changer transitions 324/2681 dead transitions. [2022-12-05 21:07:11,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 2681 transitions, 49942 flow [2022-12-05 21:07:11,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-12-05 21:07:11,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-12-05 21:07:11,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 502 transitions. [2022-12-05 21:07:11,518 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.37351190476190477 [2022-12-05 21:07:11,518 INFO L175 Difference]: Start difference. First operand has 446 places, 1622 transitions, 25292 flow. Second operand 56 states and 502 transitions. [2022-12-05 21:07:11,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 2681 transitions, 49942 flow [2022-12-05 21:08:54,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 2681 transitions, 48243 flow, removed 592 selfloop flow, removed 7 redundant places. [2022-12-05 21:08:54,510 INFO L231 Difference]: Finished difference. Result has 540 places, 1838 transitions, 30814 flow [2022-12-05 21:08:54,511 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=24047, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=581, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=979, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=30814, PETRI_PLACES=540, PETRI_TRANSITIONS=1838} [2022-12-05 21:08:54,511 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 510 predicate places. [2022-12-05 21:08:54,511 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 1838 transitions, 30814 flow [2022-12-05 21:08:54,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.608695652173913) internal successors, (60), 24 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:08:54,512 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:08:54,512 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:08:54,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-05 21:08:54,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-05 21:08:54,717 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:08:54,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:08:54,717 INFO L85 PathProgramCache]: Analyzing trace with hash -80976076, now seen corresponding path program 9 times [2022-12-05 21:08:54,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:08:54,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31395382] [2022-12-05 21:08:54,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:08:54,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:08:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:08:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:08:55,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:08:55,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31395382] [2022-12-05 21:08:55,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31395382] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:08:55,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140863606] [2022-12-05 21:08:55,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 21:08:55,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:08:55,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:08:55,384 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:08:55,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-05 21:08:55,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-05 21:08:55,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:08:55,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-05 21:08:55,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:08:56,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 136 [2022-12-05 21:08:56,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:08:56,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:08:56,961 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:08:56,961 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 182 treesize of output 114 [2022-12-05 21:08:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:08:57,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140863606] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:08:57,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:08:57,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 27 [2022-12-05 21:08:57,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472854304] [2022-12-05 21:08:57,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:08:57,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-05 21:08:57,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:08:57,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-05 21:08:57,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=631, Unknown=0, NotChecked=0, Total=756 [2022-12-05 21:08:57,117 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:08:57,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 1838 transitions, 30814 flow. Second operand has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 28 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:08:57,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:08:57,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:08:57,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:09:25,642 INFO L130 PetriNetUnfolder]: 26909/45201 cut-off events. [2022-12-05 21:09:25,643 INFO L131 PetriNetUnfolder]: For 8972709/8972709 co-relation queries the response was YES. [2022-12-05 21:09:26,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638061 conditions, 45201 events. 26909/45201 cut-off events. For 8972709/8972709 co-relation queries the response was YES. Maximal size of possible extension queue 2494. Compared 394167 event pairs, 5964 based on Foata normal form. 4/45205 useless extension candidates. Maximal degree in co-relation 637873. Up to 17205 conditions per place. [2022-12-05 21:09:27,202 INFO L137 encePairwiseOnDemand]: 11/24 looper letters, 1645 selfloop transitions, 848 changer transitions 46/2539 dead transitions. [2022-12-05 21:09:27,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 2539 transitions, 48607 flow [2022-12-05 21:09:27,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-05 21:09:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-05 21:09:27,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 349 transitions. [2022-12-05 21:09:27,204 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.32314814814814813 [2022-12-05 21:09:27,204 INFO L175 Difference]: Start difference. First operand has 540 places, 1838 transitions, 30814 flow. Second operand 45 states and 349 transitions. [2022-12-05 21:09:27,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 2539 transitions, 48607 flow [2022-12-05 21:11:25,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 2539 transitions, 46661 flow, removed 896 selfloop flow, removed 22 redundant places. [2022-12-05 21:11:25,134 INFO L231 Difference]: Finished difference. Result has 568 places, 2034 transitions, 36045 flow [2022-12-05 21:11:25,136 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=29586, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1838, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=669, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=36045, PETRI_PLACES=568, PETRI_TRANSITIONS=2034} [2022-12-05 21:11:25,136 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 538 predicate places. [2022-12-05 21:11:25,136 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 2034 transitions, 36045 flow [2022-12-05 21:11:25,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 28 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:11:25,136 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:11:25,137 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:11:25,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-05 21:11:25,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-05 21:11:25,341 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:11:25,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:11:25,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1662005446, now seen corresponding path program 10 times [2022-12-05 21:11:25,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:11:25,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390597482] [2022-12-05 21:11:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:11:25,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:11:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:11:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:11:25,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:11:25,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390597482] [2022-12-05 21:11:25,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390597482] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:11:25,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391469717] [2022-12-05 21:11:25,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-05 21:11:25,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:11:25,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:11:25,952 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:11:25,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-05 21:11:26,050 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-05 21:11:26,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:11:26,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-05 21:11:26,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:11:26,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 100 [2022-12-05 21:11:26,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:11:26,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:11:26,793 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:11:26,794 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 195 treesize of output 111 [2022-12-05 21:11:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:11:26,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391469717] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:11:26,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:11:26,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 23 [2022-12-05 21:11:26,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187506351] [2022-12-05 21:11:26,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:11:26,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-05 21:11:26,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:11:26,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-05 21:11:26,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2022-12-05 21:11:26,914 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:11:26,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 2034 transitions, 36045 flow. Second operand has 24 states, 23 states have (on average 2.608695652173913) internal successors, (60), 24 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:11:26,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:11:26,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:11:26,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:11:55,614 INFO L130 PetriNetUnfolder]: 28029/46806 cut-off events. [2022-12-05 21:11:55,614 INFO L131 PetriNetUnfolder]: For 10591519/10591519 co-relation queries the response was YES. [2022-12-05 21:11:56,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692638 conditions, 46806 events. 28029/46806 cut-off events. For 10591519/10591519 co-relation queries the response was YES. Maximal size of possible extension queue 2614. Compared 406264 event pairs, 6121 based on Foata normal form. 25/46831 useless extension candidates. Maximal degree in co-relation 692442. Up to 16168 conditions per place. [2022-12-05 21:11:57,049 INFO L137 encePairwiseOnDemand]: 11/24 looper letters, 1670 selfloop transitions, 850 changer transitions 110/2630 dead transitions. [2022-12-05 21:11:57,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 2630 transitions, 52871 flow [2022-12-05 21:11:57,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-05 21:11:57,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-05 21:11:57,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 308 transitions. [2022-12-05 21:11:57,052 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.34684684684684686 [2022-12-05 21:11:57,052 INFO L175 Difference]: Start difference. First operand has 568 places, 2034 transitions, 36045 flow. Second operand 37 states and 308 transitions. [2022-12-05 21:11:57,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 2630 transitions, 52871 flow [2022-12-05 21:15:07,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 2630 transitions, 51303 flow, removed 774 selfloop flow, removed 4 redundant places. [2022-12-05 21:15:07,642 INFO L231 Difference]: Finished difference. Result has 615 places, 2125 transitions, 38517 flow [2022-12-05 21:15:07,643 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=34627, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2033, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=745, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=38517, PETRI_PLACES=615, PETRI_TRANSITIONS=2125} [2022-12-05 21:15:07,643 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 585 predicate places. [2022-12-05 21:15:07,643 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 2125 transitions, 38517 flow [2022-12-05 21:15:07,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.608695652173913) internal successors, (60), 24 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:15:07,644 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:15:07,644 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:15:07,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-05 21:15:07,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-05 21:15:07,844 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:15:07,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:15:07,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2073236462, now seen corresponding path program 11 times [2022-12-05 21:15:07,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:15:07,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369137549] [2022-12-05 21:15:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:15:07,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:15:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:15:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:15:08,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:15:08,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369137549] [2022-12-05 21:15:08,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369137549] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:15:08,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760181793] [2022-12-05 21:15:08,513 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-05 21:15:08,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:15:08,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:15:08,514 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:15:08,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-05 21:15:08,614 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-05 21:15:08,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:15:08,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-05 21:15:08,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:15:08,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 21:15:08,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 34 [2022-12-05 21:15:08,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 80 [2022-12-05 21:15:09,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:15:09,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:15:09,474 WARN L837 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_744 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_744) c_~nondet_0~0.base) (+ (* 4 c_~i_9~0) c_~nondet_0~0.offset)) c_~name_2~0))) (< c_~i_9~0 2)) (<= 3 c_~i_9~0) (and (or (<= c_~name_1~0 c_~name_2~0) (< (+ 2147483647 c_~name_2~0) c_~name_1~0) (< c_~i_5~0 3)) (<= c_~result_4~0 0))) is different from false [2022-12-05 21:15:09,511 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:15:09,512 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 128 treesize of output 84 [2022-12-05 21:15:09,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2022-12-05 21:15:09,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:15:09,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760181793] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:15:09,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:15:09,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 29 [2022-12-05 21:15:09,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865496985] [2022-12-05 21:15:09,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:15:09,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-05 21:15:09,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:15:09,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-05 21:15:09,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=766, Unknown=1, NotChecked=56, Total=930 [2022-12-05 21:15:09,667 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:15:09,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 2125 transitions, 38517 flow. Second operand has 31 states, 30 states have (on average 2.3) internal successors, (69), 30 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:15:09,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:15:09,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:15:09,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:15:44,943 INFO L130 PetriNetUnfolder]: 29686/49652 cut-off events. [2022-12-05 21:15:44,943 INFO L131 PetriNetUnfolder]: For 12429729/12429729 co-relation queries the response was YES. [2022-12-05 21:15:46,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 769897 conditions, 49652 events. 29686/49652 cut-off events. For 12429729/12429729 co-relation queries the response was YES. Maximal size of possible extension queue 2783. Compared 436244 event pairs, 6245 based on Foata normal form. 28/49680 useless extension candidates. Maximal degree in co-relation 769684. Up to 18318 conditions per place. [2022-12-05 21:15:47,156 INFO L137 encePairwiseOnDemand]: 13/24 looper letters, 1790 selfloop transitions, 999 changer transitions 134/2923 dead transitions. [2022-12-05 21:15:47,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 660 places, 2923 transitions, 61175 flow [2022-12-05 21:15:47,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-12-05 21:15:47,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-12-05 21:15:47,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 431 transitions. [2022-12-05 21:15:47,158 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.32068452380952384 [2022-12-05 21:15:47,158 INFO L175 Difference]: Start difference. First operand has 615 places, 2125 transitions, 38517 flow. Second operand 56 states and 431 transitions. [2022-12-05 21:15:47,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 660 places, 2923 transitions, 61175 flow Received shutdown request... [2022-12-05 21:16:38,286 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 [2022-12-05 21:16:38,286 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-05 21:16:39,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-05 21:16:39,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 [2022-12-05 21:16:40,198 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-05 21:16:40,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-05 21:16:40,198 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2022-12-05 21:16:40,199 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-05 21:16:40,199 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-05 21:16:40,200 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-05 21:16:40,200 INFO L458 BasicCegarLoop]: Path program histogram: [11, 3, 2, 1] [2022-12-05 21:16:40,202 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 21:16:40,202 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 21:16:40,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:16:40 BasicIcfg [2022-12-05 21:16:40,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 21:16:40,204 INFO L158 Benchmark]: Toolchain (without parser) took 818104.49ms. Allocated memory was 181.4MB in the beginning and 7.3GB in the end (delta: 7.1GB). Free memory was 160.2MB in the beginning and 986.8MB in the end (delta: -826.6MB). Peak memory consumption was 6.6GB. Max. memory is 8.0GB. [2022-12-05 21:16:40,204 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 127.9MB. Free memory was 107.2MB in the beginning and 107.1MB in the end (delta: 89.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 21:16:40,204 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.01ms. Allocated memory is still 181.4MB. Free memory was 159.8MB in the beginning and 146.9MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-05 21:16:40,204 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.19ms. Allocated memory is still 181.4MB. Free memory was 146.9MB in the beginning and 144.1MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-05 21:16:40,204 INFO L158 Benchmark]: Boogie Preprocessor took 31.71ms. Allocated memory is still 181.4MB. Free memory was 144.1MB in the beginning and 142.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 21:16:40,204 INFO L158 Benchmark]: RCFGBuilder took 557.30ms. Allocated memory is still 181.4MB. Free memory was 142.0MB in the beginning and 148.8MB in the end (delta: -6.8MB). Peak memory consumption was 18.8MB. Max. memory is 8.0GB. [2022-12-05 21:16:40,204 INFO L158 Benchmark]: TraceAbstraction took 817185.86ms. Allocated memory was 181.4MB in the beginning and 7.3GB in the end (delta: 7.1GB). Free memory was 148.2MB in the beginning and 986.8MB in the end (delta: -838.6MB). Peak memory consumption was 6.6GB. Max. memory is 8.0GB. [2022-12-05 21:16:40,205 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 127.9MB. Free memory was 107.2MB in the beginning and 107.1MB in the end (delta: 89.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 265.01ms. Allocated memory is still 181.4MB. Free memory was 159.8MB in the beginning and 146.9MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 60.19ms. Allocated memory is still 181.4MB. Free memory was 146.9MB in the beginning and 144.1MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.71ms. Allocated memory is still 181.4MB. Free memory was 144.1MB in the beginning and 142.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 557.30ms. Allocated memory is still 181.4MB. Free memory was 142.0MB in the beginning and 148.8MB in the end (delta: -6.8MB). Peak memory consumption was 18.8MB. Max. memory is 8.0GB. * TraceAbstraction took 817185.86ms. Allocated memory was 181.4MB in the beginning and 7.3GB in the end (delta: 7.1GB). Free memory was 148.2MB in the beginning and 986.8MB in the end (delta: -838.6MB). Peak memory consumption was 6.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.9s, 312 PlacesBefore, 30 PlacesAfterwards, 328 TransitionsBefore, 24 TransitionsAfterwards, 27528 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 111 TrivialYvCompositions, 171 ConcurrentYvCompositions, 22 ChoiceCompositions, 304 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 17613, independent: 17605, independent conditional: 17605, independent unconditional: 0, dependent: 8, dependent conditional: 8, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 17613, independent: 17605, independent conditional: 0, independent unconditional: 17605, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 17613, independent: 17605, independent conditional: 0, independent unconditional: 17605, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 17613, independent: 17605, independent conditional: 0, independent unconditional: 17605, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 15631, independent: 15623, independent conditional: 0, independent unconditional: 15623, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 15631, independent: 15623, independent conditional: 0, independent unconditional: 15623, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 27, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 17613, independent: 1982, independent conditional: 0, independent unconditional: 1982, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 15631, unknown conditional: 0, unknown unconditional: 15631] , Statistics on independence cache: Total cache size (in pairs): 33839, Positive cache size: 33831, Positive conditional cache size: 0, Positive unconditional cache size: 33831, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 134]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 487 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 817.0s, OverallIterations: 17, TraceHistogramMax: 3, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 775.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5394 SdHoareTripleChecker+Valid, 16.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5394 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 14.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 125 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 739 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27767 IncrementalHoareTripleChecker+Invalid, 28631 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 739 mSolverCounterUnsat, 0 mSDtfsCounter, 27767 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1440 GetRequests, 583 SyntacticMatches, 1 SemanticMatches, 856 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 16765 ImplicationChecksByTransitivity, 73.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38517occurred in iteration=16, InterpolantAutomatonStates: 526, 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, 1.3s SatisfiabilityAnalysisTime, 24.0s InterpolantComputationTime, 707 NumberOfCodeBlocks, 706 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 962 ConstructedInterpolants, 7 QuantifiedInterpolants, 17282 SizeOfPredicates, 610 NumberOfNonLiveVariables, 3209 ConjunctsInSsa, 484 ConjunctsInUnsatCore, 41 InterpolantComputations, 5 PerfectInterpolantSequences, 207/294 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