/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-array-sum2.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 20:34:43,448 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 20:34:43,524 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 20:34:43,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 20:34:43,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 20:34:43,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 20:34:43,531 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 20:34:43,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 20:34:43,558 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 20:34:43,561 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 20:34:43,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 20:34:43,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 20:34:43,562 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 20:34:43,563 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 20:34:43,564 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 20:34:43,564 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 20:34:43,565 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 20:34:43,565 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 20:34:43,565 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 20:34:43,565 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 20:34:43,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 20:34:43,566 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 20:34:43,566 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 20:34:43,566 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 20:34:43,567 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 20:34:43,567 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 20:34:43,567 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 20:34:43,568 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 20:34:43,568 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 20:34:43,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 20:34:43,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:34:43,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 20:34:43,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 20:34:43,570 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 20:34:43,570 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 20:34:43,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 20:34:43,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 20:34:43,570 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 20:34:43,570 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 20:34:43,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 20:34:43,571 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 20:34:43,571 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 20:34:43,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 20:34:43,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 20:34:43,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 20:34:43,829 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 20:34:43,829 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 20:34:43,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-array-sum2.wvr_bound2.c [2023-08-03 20:34:45,095 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 20:34:45,261 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 20:34:45,262 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-array-sum2.wvr_bound2.c [2023-08-03 20:34:45,268 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c2a6fe47/b837934a43e3494a9427ccc349f272dd/FLAGdbd3d11e2 [2023-08-03 20:34:45,279 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c2a6fe47/b837934a43e3494a9427ccc349f272dd [2023-08-03 20:34:45,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 20:34:45,282 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 20:34:45,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 20:34:45,283 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 20:34:45,286 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 20:34:45,287 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:34:45" (1/1) ... [2023-08-03 20:34:45,287 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e7c8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:34:45, skipping insertion in model container [2023-08-03 20:34:45,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:34:45" (1/1) ... [2023-08-03 20:34:45,307 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 20:34:45,478 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-array-sum2.wvr_bound2.c[2842,2855] [2023-08-03 20:34:45,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:34:45,497 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 20:34:45,524 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-array-sum2.wvr_bound2.c[2842,2855] [2023-08-03 20:34:45,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:34:45,535 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:34:45,536 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:34:45,542 INFO L206 MainTranslator]: Completed translation [2023-08-03 20:34:45,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:34:45 WrapperNode [2023-08-03 20:34:45,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 20:34:45,543 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 20:34:45,543 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 20:34:45,544 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 20:34:45,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:34:45" (1/1) ... [2023-08-03 20:34:45,557 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:34:45" (1/1) ... [2023-08-03 20:34:45,583 INFO L138 Inliner]: procedures = 25, calls = 52, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 323 [2023-08-03 20:34:45,584 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 20:34:45,584 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 20:34:45,584 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 20:34:45,584 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 20:34:45,592 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:34:45" (1/1) ... [2023-08-03 20:34:45,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:34:45" (1/1) ... [2023-08-03 20:34:45,596 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:34:45" (1/1) ... [2023-08-03 20:34:45,597 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:34:45" (1/1) ... [2023-08-03 20:34:45,606 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:34:45" (1/1) ... [2023-08-03 20:34:45,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:34:45" (1/1) ... [2023-08-03 20:34:45,613 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:34:45" (1/1) ... [2023-08-03 20:34:45,614 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:34:45" (1/1) ... [2023-08-03 20:34:45,618 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 20:34:45,619 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 20:34:45,625 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 20:34:45,625 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 20:34:45,626 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:34:45" (1/1) ... [2023-08-03 20:34:45,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:34:45,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:34:45,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 20:34:45,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 20:34:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 20:34:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 20:34:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 20:34:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 20:34:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 20:34:45,712 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 20:34:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 20:34:45,712 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 20:34:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 20:34:45,714 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 20:34:45,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 20:34:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 20:34:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 20:34:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 20:34:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 20:34:45,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 20:34:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 20:34:45,717 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 20:34:45,880 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 20:34:45,882 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 20:34:46,304 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 20:34:46,532 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 20:34:46,532 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-03 20:34:46,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:34:46 BoogieIcfgContainer [2023-08-03 20:34:46,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 20:34:46,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 20:34:46,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 20:34:46,540 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 20:34:46,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 08:34:45" (1/3) ... [2023-08-03 20:34:46,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7636a0ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:34:46, skipping insertion in model container [2023-08-03 20:34:46,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:34:45" (2/3) ... [2023-08-03 20:34:46,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7636a0ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:34:46, skipping insertion in model container [2023-08-03 20:34:46,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:34:46" (3/3) ... [2023-08-03 20:34:46,543 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-more-array-sum2.wvr_bound2.c [2023-08-03 20:34:46,551 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 20:34:46,559 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 20:34:46,559 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 20:34:46,560 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 20:34:46,638 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 20:34:46,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 228 transitions, 498 flow [2023-08-03 20:34:46,879 INFO L124 PetriNetUnfolderBase]: 105/696 cut-off events. [2023-08-03 20:34:46,879 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:34:46,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 696 events. 105/696 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3258 event pairs, 0 based on Foata normal form. 0/581 useless extension candidates. Maximal degree in co-relation 407. Up to 16 conditions per place. [2023-08-03 20:34:46,891 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 228 transitions, 498 flow [2023-08-03 20:34:46,902 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 228 transitions, 498 flow [2023-08-03 20:34:46,905 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:34:46,923 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 228 transitions, 498 flow [2023-08-03 20:34:46,927 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 228 transitions, 498 flow [2023-08-03 20:34:46,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 228 transitions, 498 flow [2023-08-03 20:34:47,014 INFO L124 PetriNetUnfolderBase]: 105/696 cut-off events. [2023-08-03 20:34:47,015 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:34:47,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 696 events. 105/696 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3258 event pairs, 0 based on Foata normal form. 0/581 useless extension candidates. Maximal degree in co-relation 407. Up to 16 conditions per place. [2023-08-03 20:34:47,027 INFO L119 LiptonReduction]: Number of co-enabled transitions 5220 [2023-08-03 20:34:53,674 INFO L134 LiptonReduction]: Checked pairs total: 8777 [2023-08-03 20:34:53,674 INFO L136 LiptonReduction]: Total number of compositions: 210 [2023-08-03 20:34:53,685 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:34:53,691 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=true, 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;@3b543a25, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:34:53,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:34:53,696 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:34:53,697 INFO L124 PetriNetUnfolderBase]: 5/35 cut-off events. [2023-08-03 20:34:53,697 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 20:34:53,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:34:53,698 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-03 20:34:53,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:34:53,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:34:53,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1422071651, now seen corresponding path program 1 times [2023-08-03 20:34:53,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:34:53,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925995074] [2023-08-03 20:34:53,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:34:53,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:34:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:34:54,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 20:34:54,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:34:54,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925995074] [2023-08-03 20:34:54,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925995074] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:34:54,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:34:54,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 20:34:54,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330063182] [2023-08-03 20:34:54,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:34:54,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 20:34:54,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:34:54,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 20:34:54,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 20:34:54,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 438 [2023-08-03 20:34:54,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 51 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:34:54,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:34:54,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 438 [2023-08-03 20:34:54,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:34:54,674 INFO L124 PetriNetUnfolderBase]: 2295/3244 cut-off events. [2023-08-03 20:34:54,674 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2023-08-03 20:34:54,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6552 conditions, 3244 events. 2295/3244 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15176 event pairs, 1048 based on Foata normal form. 0/1870 useless extension candidates. Maximal degree in co-relation 4989. Up to 3071 conditions per place. [2023-08-03 20:34:54,694 INFO L140 encePairwiseOnDemand]: 432/438 looper letters, 39 selfloop transitions, 4 changer transitions 3/55 dead transitions. [2023-08-03 20:34:54,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 244 flow [2023-08-03 20:34:54,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:34:54,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:34:54,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 975 transitions. [2023-08-03 20:34:54,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452054794520548 [2023-08-03 20:34:54,711 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 975 transitions. [2023-08-03 20:34:54,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 975 transitions. [2023-08-03 20:34:54,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:34:54,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 975 transitions. [2023-08-03 20:34:54,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 195.0) internal successors, (975), 5 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:34:54,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:34:54,729 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:34:54,730 INFO L175 Difference]: Start difference. First operand has 44 places, 51 transitions, 144 flow. Second operand 5 states and 975 transitions. [2023-08-03 20:34:54,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 244 flow [2023-08-03 20:34:54,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 244 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 20:34:54,737 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 170 flow [2023-08-03 20:34:54,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2023-08-03 20:34:54,741 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2023-08-03 20:34:54,741 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 170 flow [2023-08-03 20:34:54,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:34:54,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:34:54,742 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:34:54,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 20:34:54,743 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:34:54,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:34:54,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1086534716, now seen corresponding path program 1 times [2023-08-03 20:34:54,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:34:54,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080906255] [2023-08-03 20:34:54,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:34:54,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:34:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:34:54,778 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 20:34:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:34:54,842 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 20:34:54,842 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 20:34:54,843 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 20:34:54,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 20:34:54,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 20:34:54,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 20:34:54,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 20:34:54,846 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 20:34:54,848 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 20:34:54,849 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 20:34:54,898 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 20:34:54,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 270 transitions, 630 flow [2023-08-03 20:34:55,483 INFO L124 PetriNetUnfolderBase]: 895/4185 cut-off events. [2023-08-03 20:34:55,483 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:34:55,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4859 conditions, 4185 events. 895/4185 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 33261 event pairs, 22 based on Foata normal form. 0/3534 useless extension candidates. Maximal degree in co-relation 2502. Up to 192 conditions per place. [2023-08-03 20:34:55,514 INFO L82 GeneralOperation]: Start removeDead. Operand has 237 places, 270 transitions, 630 flow [2023-08-03 20:34:55,539 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 270 transitions, 630 flow [2023-08-03 20:34:55,539 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:34:55,540 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 270 transitions, 630 flow [2023-08-03 20:34:55,540 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 270 transitions, 630 flow [2023-08-03 20:34:55,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 270 transitions, 630 flow [2023-08-03 20:34:56,056 INFO L124 PetriNetUnfolderBase]: 895/4185 cut-off events. [2023-08-03 20:34:56,056 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:34:56,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4859 conditions, 4185 events. 895/4185 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 33261 event pairs, 22 based on Foata normal form. 0/3534 useless extension candidates. Maximal degree in co-relation 2502. Up to 192 conditions per place. [2023-08-03 20:34:56,178 INFO L119 LiptonReduction]: Number of co-enabled transitions 13500 [2023-08-03 20:35:03,003 INFO L134 LiptonReduction]: Checked pairs total: 26841 [2023-08-03 20:35:03,003 INFO L136 LiptonReduction]: Total number of compositions: 233 [2023-08-03 20:35:03,005 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:35:03,006 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=true, 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;@3b543a25, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:35:03,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:35:03,009 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:35:03,010 INFO L124 PetriNetUnfolderBase]: 5/35 cut-off events. [2023-08-03 20:35:03,010 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 20:35:03,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:35:03,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:35:03,010 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:35:03,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:35:03,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1616545615, now seen corresponding path program 1 times [2023-08-03 20:35:03,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:35:03,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211436472] [2023-08-03 20:35:03,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:35:03,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:35:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:35:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:35:03,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:35:03,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211436472] [2023-08-03 20:35:03,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211436472] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:35:03,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:35:03,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 20:35:03,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500960542] [2023-08-03 20:35:03,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:35:03,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:35:03,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:35:03,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:35:03,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:35:03,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 503 [2023-08-03 20:35:03,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 75 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:35:03,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:35:03,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 503 [2023-08-03 20:35:03,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:35:29,732 INFO L124 PetriNetUnfolderBase]: 282560/337067 cut-off events. [2023-08-03 20:35:29,733 INFO L125 PetriNetUnfolderBase]: For 35646/35646 co-relation queries the response was YES. [2023-08-03 20:35:30,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685347 conditions, 337067 events. 282560/337067 cut-off events. For 35646/35646 co-relation queries the response was YES. Maximal size of possible extension queue 6293. Compared 1586094 event pairs, 121223 based on Foata normal form. 0/188808 useless extension candidates. Maximal degree in co-relation 224681. Up to 327395 conditions per place. [2023-08-03 20:35:31,895 INFO L140 encePairwiseOnDemand]: 499/503 looper letters, 61 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-08-03 20:35:31,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 78 transitions, 372 flow [2023-08-03 20:35:31,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:35:31,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:35:31,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 710 transitions. [2023-08-03 20:35:31,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47051027170311466 [2023-08-03 20:35:31,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 710 transitions. [2023-08-03 20:35:31,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 710 transitions. [2023-08-03 20:35:31,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:35:31,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 710 transitions. [2023-08-03 20:35:31,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:35:31,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:35:31,904 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:35:31,904 INFO L175 Difference]: Start difference. First operand has 62 places, 75 transitions, 240 flow. Second operand 3 states and 710 transitions. [2023-08-03 20:35:31,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 78 transitions, 372 flow [2023-08-03 20:35:31,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 20:35:31,938 INFO L231 Difference]: Finished difference. Result has 64 places, 75 transitions, 250 flow [2023-08-03 20:35:31,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=64, PETRI_TRANSITIONS=75} [2023-08-03 20:35:31,939 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2023-08-03 20:35:31,939 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 75 transitions, 250 flow [2023-08-03 20:35:31,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:35:31,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:35:31,940 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 20:35:31,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 20:35:31,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:35:31,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:35:31,941 INFO L85 PathProgramCache]: Analyzing trace with hash 708228215, now seen corresponding path program 1 times [2023-08-03 20:35:31,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:35:31,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688004441] [2023-08-03 20:35:31,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:35:31,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:35:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:35:32,040 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:35:32,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:35:32,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688004441] [2023-08-03 20:35:32,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688004441] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:35:32,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768112111] [2023-08-03 20:35:32,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:35:32,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:35:32,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:35:32,045 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:35:32,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 20:35:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:35:32,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:35:32,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:35:32,256 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:35:32,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:35:32,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768112111] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:35:32,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:35:32,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 20:35:32,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209429001] [2023-08-03 20:35:32,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:35:32,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:35:32,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:35:32,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:35:32,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:35:32,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 503 [2023-08-03 20:35:32,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 216.0) internal successors, (1080), 5 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:35:32,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:35:32,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 503 [2023-08-03 20:35:32,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:35:57,161 INFO L124 PetriNetUnfolderBase]: 282564/337056 cut-off events. [2023-08-03 20:35:57,161 INFO L125 PetriNetUnfolderBase]: For 35717/35717 co-relation queries the response was YES. [2023-08-03 20:35:58,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685353 conditions, 337056 events. 282564/337056 cut-off events. For 35717/35717 co-relation queries the response was YES. Maximal size of possible extension queue 6401. Compared 1587000 event pairs, 98679 based on Foata normal form. 9/188817 useless extension candidates. Maximal degree in co-relation 392153. Up to 327358 conditions per place. [2023-08-03 20:35:59,551 INFO L140 encePairwiseOnDemand]: 499/503 looper letters, 64 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2023-08-03 20:35:59,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 82 transitions, 398 flow [2023-08-03 20:35:59,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:35:59,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:35:59,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1139 transitions. [2023-08-03 20:35:59,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45288270377733597 [2023-08-03 20:35:59,560 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1139 transitions. [2023-08-03 20:35:59,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1139 transitions. [2023-08-03 20:35:59,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:35:59,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1139 transitions. [2023-08-03 20:35:59,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.8) internal successors, (1139), 5 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:35:59,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:35:59,571 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:35:59,571 INFO L175 Difference]: Start difference. First operand has 64 places, 75 transitions, 250 flow. Second operand 5 states and 1139 transitions. [2023-08-03 20:35:59,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 82 transitions, 398 flow [2023-08-03 20:35:59,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 82 transitions, 388 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 20:35:59,614 INFO L231 Difference]: Finished difference. Result has 66 places, 75 transitions, 255 flow [2023-08-03 20:35:59,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=66, PETRI_TRANSITIONS=75} [2023-08-03 20:35:59,616 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 4 predicate places. [2023-08-03 20:35:59,616 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 75 transitions, 255 flow [2023-08-03 20:35:59,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.0) internal successors, (1080), 5 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:35:59,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:35:59,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:35:59,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 20:35:59,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:35:59,823 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:35:59,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:35:59,823 INFO L85 PathProgramCache]: Analyzing trace with hash -552988373, now seen corresponding path program 1 times [2023-08-03 20:35:59,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:35:59,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618500508] [2023-08-03 20:35:59,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:35:59,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:35:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:35:59,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:35:59,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:35:59,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618500508] [2023-08-03 20:35:59,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618500508] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:35:59,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287453011] [2023-08-03 20:35:59,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:35:59,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:35:59,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:35:59,874 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:35:59,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 20:35:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:35:59,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:35:59,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:35:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 20:35:59,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:35:59,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287453011] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:35:59,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:35:59,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 20:35:59,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9968215] [2023-08-03 20:35:59,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:35:59,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:35:59,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:35:59,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:35:59,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:35:59,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 503 [2023-08-03 20:35:59,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 75 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:35:59,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:35:59,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 503 [2023-08-03 20:35:59,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:36:24,514 INFO L124 PetriNetUnfolderBase]: 278778/332619 cut-off events. [2023-08-03 20:36:24,514 INFO L125 PetriNetUnfolderBase]: For 29987/29987 co-relation queries the response was YES. [2023-08-03 20:36:25,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673659 conditions, 332619 events. 278778/332619 cut-off events. For 29987/29987 co-relation queries the response was YES. Maximal size of possible extension queue 6575. Compared 1580195 event pairs, 119869 based on Foata normal form. 0/186402 useless extension candidates. Maximal degree in co-relation 231660. Up to 322783 conditions per place. [2023-08-03 20:36:26,584 INFO L140 encePairwiseOnDemand]: 500/503 looper letters, 66 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-08-03 20:36:26,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 83 transitions, 409 flow [2023-08-03 20:36:26,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:36:26,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:36:26,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 713 transitions. [2023-08-03 20:36:26,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47249834327369117 [2023-08-03 20:36:26,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 713 transitions. [2023-08-03 20:36:26,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 713 transitions. [2023-08-03 20:36:26,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:36:26,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 713 transitions. [2023-08-03 20:36:26,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:36:26,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:36:26,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:36:26,593 INFO L175 Difference]: Start difference. First operand has 66 places, 75 transitions, 255 flow. Second operand 3 states and 713 transitions. [2023-08-03 20:36:26,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 83 transitions, 409 flow [2023-08-03 20:36:26,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 402 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 20:36:26,608 INFO L231 Difference]: Finished difference. Result has 67 places, 76 transitions, 263 flow [2023-08-03 20:36:26,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=67, PETRI_TRANSITIONS=76} [2023-08-03 20:36:26,609 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 5 predicate places. [2023-08-03 20:36:26,609 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 76 transitions, 263 flow [2023-08-03 20:36:26,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:36:26,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:36:26,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:36:26,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 20:36:26,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:36:26,816 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:36:26,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:36:26,816 INFO L85 PathProgramCache]: Analyzing trace with hash 792002943, now seen corresponding path program 1 times [2023-08-03 20:36:26,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:36:26,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442671364] [2023-08-03 20:36:26,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:36:26,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:36:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:36:26,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 20:36:26,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:36:26,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442671364] [2023-08-03 20:36:26,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442671364] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:36:26,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348656030] [2023-08-03 20:36:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:36:26,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:36:26,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:36:26,860 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:36:26,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 20:36:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:36:26,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:36:26,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:36:26,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 20:36:26,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:36:26,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348656030] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:36:26,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:36:26,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 20:36:26,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500107897] [2023-08-03 20:36:26,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:36:26,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:36:26,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:36:26,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:36:26,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:36:26,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 503 [2023-08-03 20:36:26,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 76 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:36:26,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:36:26,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 503 [2023-08-03 20:36:26,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:36:53,867 INFO L124 PetriNetUnfolderBase]: 278154/334083 cut-off events. [2023-08-03 20:36:53,867 INFO L125 PetriNetUnfolderBase]: For 21408/21408 co-relation queries the response was YES. [2023-08-03 20:36:54,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674694 conditions, 334083 events. 278154/334083 cut-off events. For 21408/21408 co-relation queries the response was YES. Maximal size of possible extension queue 7103. Compared 1676402 event pairs, 118825 based on Foata normal form. 0/188394 useless extension candidates. Maximal degree in co-relation 232257. Up to 318851 conditions per place. [2023-08-03 20:36:56,186 INFO L140 encePairwiseOnDemand]: 500/503 looper letters, 72 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-03 20:36:56,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 88 transitions, 435 flow [2023-08-03 20:36:56,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:36:56,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:36:56,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 717 transitions. [2023-08-03 20:36:56,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47514910536779326 [2023-08-03 20:36:56,188 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 717 transitions. [2023-08-03 20:36:56,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 717 transitions. [2023-08-03 20:36:56,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:36:56,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 717 transitions. [2023-08-03 20:36:56,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:36:56,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:36:56,193 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:36:56,193 INFO L175 Difference]: Start difference. First operand has 67 places, 76 transitions, 263 flow. Second operand 3 states and 717 transitions. [2023-08-03 20:36:56,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 88 transitions, 435 flow [2023-08-03 20:36:56,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 88 transitions, 432 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:36:56,200 INFO L231 Difference]: Finished difference. Result has 69 places, 77 transitions, 272 flow [2023-08-03 20:36:56,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=69, PETRI_TRANSITIONS=77} [2023-08-03 20:36:56,201 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 7 predicate places. [2023-08-03 20:36:56,201 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 77 transitions, 272 flow [2023-08-03 20:36:56,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:36:56,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:36:56,201 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:36:56,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 20:36:56,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:36:56,402 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:36:56,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:36:56,403 INFO L85 PathProgramCache]: Analyzing trace with hash -204722031, now seen corresponding path program 1 times [2023-08-03 20:36:56,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:36:56,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611395001] [2023-08-03 20:36:56,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:36:56,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:36:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:36:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:36:56,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:36:56,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611395001] [2023-08-03 20:36:56,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611395001] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:36:56,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240036914] [2023-08-03 20:36:56,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:36:56,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:36:56,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:36:56,466 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:36:56,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 20:36:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:36:56,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:36:56,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:36:56,572 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:36:56,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:36:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:36:56,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240036914] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:36:56,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:36:56,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:36:56,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813302808] [2023-08-03 20:36:56,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:36:56,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:36:56,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:36:56,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:36:56,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:36:56,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 503 [2023-08-03 20:36:56,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 77 transitions, 272 flow. Second operand has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:36:56,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:36:56,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 503 [2023-08-03 20:36:56,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:37:20,394 INFO L124 PetriNetUnfolderBase]: 270980/325100 cut-off events. [2023-08-03 20:37:20,394 INFO L125 PetriNetUnfolderBase]: For 22798/22798 co-relation queries the response was YES. [2023-08-03 20:37:21,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659102 conditions, 325100 events. 270980/325100 cut-off events. For 22798/22798 co-relation queries the response was YES. Maximal size of possible extension queue 7112. Compared 1612529 event pairs, 95892 based on Foata normal form. 3/184669 useless extension candidates. Maximal degree in co-relation 186197. Up to 313778 conditions per place. [2023-08-03 20:37:22,786 INFO L140 encePairwiseOnDemand]: 500/503 looper letters, 66 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-08-03 20:37:22,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 83 transitions, 418 flow [2023-08-03 20:37:22,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:37:22,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:37:22,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 924 transitions. [2023-08-03 20:37:22,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592445328031809 [2023-08-03 20:37:22,789 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 924 transitions. [2023-08-03 20:37:22,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 924 transitions. [2023-08-03 20:37:22,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:37:22,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 924 transitions. [2023-08-03 20:37:22,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:37:22,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:37:22,794 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:37:22,795 INFO L175 Difference]: Start difference. First operand has 69 places, 77 transitions, 272 flow. Second operand 4 states and 924 transitions. [2023-08-03 20:37:22,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 83 transitions, 418 flow [2023-08-03 20:37:22,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 83 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:37:22,813 INFO L231 Difference]: Finished difference. Result has 71 places, 76 transitions, 268 flow [2023-08-03 20:37:22,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=71, PETRI_TRANSITIONS=76} [2023-08-03 20:37:22,814 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 9 predicate places. [2023-08-03 20:37:22,814 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 76 transitions, 268 flow [2023-08-03 20:37:22,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:37:22,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:37:22,814 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:37:22,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-03 20:37:23,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:37:23,019 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:37:23,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:37:23,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1393538314, now seen corresponding path program 1 times [2023-08-03 20:37:23,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:37:23,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892035013] [2023-08-03 20:37:23,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:37:23,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:37:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:37:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 20:37:23,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:37:23,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892035013] [2023-08-03 20:37:23,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892035013] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:37:23,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497783486] [2023-08-03 20:37:23,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:37:23,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:37:23,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:37:23,105 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:37:23,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 20:37:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:37:23,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:37:23,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:37:23,235 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 20:37:23,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:37:23,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497783486] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:37:23,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:37:23,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 20:37:23,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410035483] [2023-08-03 20:37:23,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:37:23,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:37:23,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:37:23,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:37:23,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:37:23,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 503 [2023-08-03 20:37:23,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 76 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:37:23,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:37:23,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 503 [2023-08-03 20:37:23,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:37:47,291 INFO L124 PetriNetUnfolderBase]: 270386/324425 cut-off events. [2023-08-03 20:37:47,291 INFO L125 PetriNetUnfolderBase]: For 22292/22292 co-relation queries the response was YES. [2023-08-03 20:37:48,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657383 conditions, 324425 events. 270386/324425 cut-off events. For 22292/22292 co-relation queries the response was YES. Maximal size of possible extension queue 7086. Compared 1609566 event pairs, 52863 based on Foata normal form. 81/184369 useless extension candidates. Maximal degree in co-relation 286135. Up to 312342 conditions per place. [2023-08-03 20:37:49,498 INFO L140 encePairwiseOnDemand]: 499/503 looper letters, 78 selfloop transitions, 4 changer transitions 0/95 dead transitions. [2023-08-03 20:37:49,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 95 transitions, 470 flow [2023-08-03 20:37:49,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:37:49,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:37:49,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1151 transitions. [2023-08-03 20:37:49,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45765407554671966 [2023-08-03 20:37:49,501 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1151 transitions. [2023-08-03 20:37:49,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1151 transitions. [2023-08-03 20:37:49,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:37:49,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1151 transitions. [2023-08-03 20:37:49,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 230.2) internal successors, (1151), 5 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:37:49,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:37:49,508 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:37:49,508 INFO L175 Difference]: Start difference. First operand has 71 places, 76 transitions, 268 flow. Second operand 5 states and 1151 transitions. [2023-08-03 20:37:49,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 95 transitions, 470 flow [2023-08-03 20:37:49,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 95 transitions, 456 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 20:37:49,534 INFO L231 Difference]: Finished difference. Result has 71 places, 76 transitions, 271 flow [2023-08-03 20:37:49,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=271, PETRI_PLACES=71, PETRI_TRANSITIONS=76} [2023-08-03 20:37:49,535 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 9 predicate places. [2023-08-03 20:37:49,535 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 76 transitions, 271 flow [2023-08-03 20:37:49,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:37:49,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:37:49,536 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:37:49,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 20:37:49,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:37:49,741 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:37:49,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:37:49,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1393790356, now seen corresponding path program 1 times [2023-08-03 20:37:49,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:37:49,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512836291] [2023-08-03 20:37:49,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:37:49,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:37:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:37:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 20:37:49,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:37:49,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512836291] [2023-08-03 20:37:49,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512836291] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:37:49,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264405470] [2023-08-03 20:37:49,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:37:49,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:37:49,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:37:49,806 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:37:49,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 20:37:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:37:50,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:37:50,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:37:50,065 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:37:50,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:37:50,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264405470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:37:50,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:37:50,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 20:37:50,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000850213] [2023-08-03 20:37:50,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:37:50,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:37:50,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:37:50,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:37:50,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:37:50,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 503 [2023-08-03 20:37:50,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 76 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:37:50,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:37:50,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 503 [2023-08-03 20:37:50,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:38:13,079 INFO L124 PetriNetUnfolderBase]: 230669/278066 cut-off events. [2023-08-03 20:38:13,080 INFO L125 PetriNetUnfolderBase]: For 14878/14878 co-relation queries the response was YES. [2023-08-03 20:38:14,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562566 conditions, 278066 events. 230669/278066 cut-off events. For 14878/14878 co-relation queries the response was YES. Maximal size of possible extension queue 6404. Compared 1394339 event pairs, 92028 based on Foata normal form. 0/158692 useless extension candidates. Maximal degree in co-relation 253648. Up to 230761 conditions per place. [2023-08-03 20:38:15,041 INFO L140 encePairwiseOnDemand]: 500/503 looper letters, 81 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2023-08-03 20:38:15,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 96 transitions, 491 flow [2023-08-03 20:38:15,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:38:15,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:38:15,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 725 transitions. [2023-08-03 20:38:15,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804506295559973 [2023-08-03 20:38:15,044 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 725 transitions. [2023-08-03 20:38:15,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 725 transitions. [2023-08-03 20:38:15,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:38:15,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 725 transitions. [2023-08-03 20:38:15,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:38:15,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:38:15,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:38:15,048 INFO L175 Difference]: Start difference. First operand has 71 places, 76 transitions, 271 flow. Second operand 3 states and 725 transitions. [2023-08-03 20:38:15,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 96 transitions, 491 flow [2023-08-03 20:38:15,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 96 transitions, 484 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 20:38:15,057 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 276 flow [2023-08-03 20:38:15,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=72, PETRI_TRANSITIONS=77} [2023-08-03 20:38:15,058 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 10 predicate places. [2023-08-03 20:38:15,058 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 276 flow [2023-08-03 20:38:15,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:38:15,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:38:15,059 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:38:15,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 20:38:15,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:38:15,264 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:38:15,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:38:15,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1578435084, now seen corresponding path program 1 times [2023-08-03 20:38:15,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:38:15,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557334177] [2023-08-03 20:38:15,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:38:15,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:38:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:38:15,314 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:38:15,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:38:15,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557334177] [2023-08-03 20:38:15,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557334177] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:38:15,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006182350] [2023-08-03 20:38:15,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:38:15,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:38:15,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:38:15,316 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:38:15,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 20:38:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:38:15,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:38:15,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:38:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:38:15,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:38:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:38:15,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006182350] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:38:15,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:38:15,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:38:15,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772426525] [2023-08-03 20:38:15,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:38:15,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:38:15,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:38:15,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:38:15,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:38:15,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 503 [2023-08-03 20:38:15,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 276 flow. Second operand has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:38:15,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:38:15,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 503 [2023-08-03 20:38:15,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:38:35,720 INFO L124 PetriNetUnfolderBase]: 218492/263162 cut-off events. [2023-08-03 20:38:35,720 INFO L125 PetriNetUnfolderBase]: For 21905/21905 co-relation queries the response was YES. [2023-08-03 20:38:36,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541887 conditions, 263162 events. 218492/263162 cut-off events. For 21905/21905 co-relation queries the response was YES. Maximal size of possible extension queue 6409. Compared 1318827 event pairs, 78674 based on Foata normal form. 27/153122 useless extension candidates. Maximal degree in co-relation 248918. Up to 253903 conditions per place. [2023-08-03 20:38:37,568 INFO L140 encePairwiseOnDemand]: 500/503 looper letters, 75 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2023-08-03 20:38:37,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 456 flow [2023-08-03 20:38:37,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:38:37,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:38:37,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 932 transitions. [2023-08-03 20:38:37,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46322067594433397 [2023-08-03 20:38:37,571 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 932 transitions. [2023-08-03 20:38:37,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 932 transitions. [2023-08-03 20:38:37,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:38:37,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 932 transitions. [2023-08-03 20:38:37,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:38:37,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:38:37,576 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:38:37,576 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 276 flow. Second operand 4 states and 932 transitions. [2023-08-03 20:38:37,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 456 flow [2023-08-03 20:38:37,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 91 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:38:37,682 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 272 flow [2023-08-03 20:38:37,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=272, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2023-08-03 20:38:37,683 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 12 predicate places. [2023-08-03 20:38:37,683 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 272 flow [2023-08-03 20:38:37,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:38:37,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:38:37,683 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:38:37,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-03 20:38:37,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:38:37,884 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:38:37,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:38:37,884 INFO L85 PathProgramCache]: Analyzing trace with hash 674204007, now seen corresponding path program 1 times [2023-08-03 20:38:37,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:38:37,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235247192] [2023-08-03 20:38:37,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:38:37,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:38:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:38:37,960 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 20:38:37,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:38:37,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235247192] [2023-08-03 20:38:37,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235247192] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:38:37,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732797873] [2023-08-03 20:38:37,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:38:37,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:38:37,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:38:37,962 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:38:37,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 20:38:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:38:38,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:38:38,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:38:38,092 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 20:38:38,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:38:38,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732797873] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:38:38,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:38:38,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 20:38:38,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127967440] [2023-08-03 20:38:38,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:38:38,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:38:38,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:38:38,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:38:38,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:38:38,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 503 [2023-08-03 20:38:38,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 272 flow. Second operand has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:38:38,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:38:38,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 503 [2023-08-03 20:38:38,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:38:57,479 INFO L124 PetriNetUnfolderBase]: 212660/255833 cut-off events. [2023-08-03 20:38:57,479 INFO L125 PetriNetUnfolderBase]: For 19327/19327 co-relation queries the response was YES. [2023-08-03 20:38:58,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525729 conditions, 255833 events. 212660/255833 cut-off events. For 19327/19327 co-relation queries the response was YES. Maximal size of possible extension queue 6359. Compared 1265120 event pairs, 10590 based on Foata normal form. 729/149411 useless extension candidates. Maximal degree in co-relation 243836. Up to 237039 conditions per place. [2023-08-03 20:38:59,408 INFO L140 encePairwiseOnDemand]: 499/503 looper letters, 91 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2023-08-03 20:38:59,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 107 transitions, 524 flow [2023-08-03 20:38:59,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:38:59,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:38:59,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1163 transitions. [2023-08-03 20:38:59,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46242544731610336 [2023-08-03 20:38:59,412 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1163 transitions. [2023-08-03 20:38:59,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1163 transitions. [2023-08-03 20:38:59,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:38:59,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1163 transitions. [2023-08-03 20:38:59,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 232.6) internal successors, (1163), 5 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:38:59,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:38:59,418 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:38:59,418 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 272 flow. Second operand 5 states and 1163 transitions. [2023-08-03 20:38:59,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 107 transitions, 524 flow [2023-08-03 20:38:59,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 107 transitions, 510 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 20:38:59,540 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 275 flow [2023-08-03 20:38:59,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=275, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2023-08-03 20:38:59,540 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 12 predicate places. [2023-08-03 20:38:59,540 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 275 flow [2023-08-03 20:38:59,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:38:59,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:38:59,541 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:38:59,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-03 20:38:59,746 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,SelfDestructingSolverStorable10 [2023-08-03 20:38:59,747 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:38:59,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:38:59,747 INFO L85 PathProgramCache]: Analyzing trace with hash 576649756, now seen corresponding path program 1 times [2023-08-03 20:38:59,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:38:59,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718940917] [2023-08-03 20:38:59,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:38:59,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:38:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:38:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 20:38:59,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:38:59,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718940917] [2023-08-03 20:38:59,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718940917] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:38:59,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495625938] [2023-08-03 20:38:59,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:38:59,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:38:59,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:38:59,823 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) [2023-08-03 20:38:59,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 20:38:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:38:59,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:38:59,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:38:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:38:59,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:38:59,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495625938] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:38:59,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:38:59,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 20:38:59,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860165684] [2023-08-03 20:38:59,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:38:59,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:38:59,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:38:59,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:38:59,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:38:59,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 503 [2023-08-03 20:38:59,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:38:59,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:38:59,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 503 [2023-08-03 20:38:59,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:39:18,074 INFO L124 PetriNetUnfolderBase]: 195529/237629 cut-off events. [2023-08-03 20:39:18,075 INFO L125 PetriNetUnfolderBase]: For 21455/21455 co-relation queries the response was YES. [2023-08-03 20:39:18,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489075 conditions, 237629 events. 195529/237629 cut-off events. For 21455/21455 co-relation queries the response was YES. Maximal size of possible extension queue 5067. Compared 1211580 event pairs, 71309 based on Foata normal form. 0/140918 useless extension candidates. Maximal degree in co-relation 235371. Up to 171901 conditions per place. [2023-08-03 20:39:19,806 INFO L140 encePairwiseOnDemand]: 500/503 looper letters, 82 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2023-08-03 20:39:19,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 96 transitions, 495 flow [2023-08-03 20:39:19,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:39:19,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:39:19,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 725 transitions. [2023-08-03 20:39:19,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804506295559973 [2023-08-03 20:39:19,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 725 transitions. [2023-08-03 20:39:19,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 725 transitions. [2023-08-03 20:39:19,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:39:19,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 725 transitions. [2023-08-03 20:39:19,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:39:19,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:39:19,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:39:19,813 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 275 flow. Second operand 3 states and 725 transitions. [2023-08-03 20:39:19,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 96 transitions, 495 flow [2023-08-03 20:39:19,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 96 transitions, 488 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 20:39:19,896 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 280 flow [2023-08-03 20:39:19,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2023-08-03 20:39:19,896 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 13 predicate places. [2023-08-03 20:39:19,897 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 280 flow [2023-08-03 20:39:19,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:39:19,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:39:19,897 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:39:19,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 20:39:20,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:39:20,103 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:39:20,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:39:20,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1079516197, now seen corresponding path program 1 times [2023-08-03 20:39:20,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:39:20,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236701200] [2023-08-03 20:39:20,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:39:20,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:39:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:39:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:39:20,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:39:20,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236701200] [2023-08-03 20:39:20,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236701200] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:39:20,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4097891] [2023-08-03 20:39:20,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:39:20,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:39:20,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:39:20,185 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) [2023-08-03 20:39:20,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 20:39:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:39:20,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:39:20,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:39:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 20:39:20,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:39:20,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4097891] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:39:20,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:39:20,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 20:39:20,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182931328] [2023-08-03 20:39:20,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:39:20,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:39:20,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:39:20,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:39:20,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:39:20,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 503 [2023-08-03 20:39:20,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:39:20,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:39:20,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 503 [2023-08-03 20:39:20,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:39:40,198 INFO L124 PetriNetUnfolderBase]: 194463/237044 cut-off events. [2023-08-03 20:39:40,198 INFO L125 PetriNetUnfolderBase]: For 25124/25124 co-relation queries the response was YES. [2023-08-03 20:39:41,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497048 conditions, 237044 events. 194463/237044 cut-off events. For 25124/25124 co-relation queries the response was YES. Maximal size of possible extension queue 4829. Compared 1217488 event pairs, 84459 based on Foata normal form. 0/143961 useless extension candidates. Maximal degree in co-relation 242597. Up to 202428 conditions per place. [2023-08-03 20:39:41,817 INFO L140 encePairwiseOnDemand]: 500/503 looper letters, 83 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2023-08-03 20:39:41,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 502 flow [2023-08-03 20:39:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:39:41,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:39:41,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 725 transitions. [2023-08-03 20:39:41,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804506295559973 [2023-08-03 20:39:41,819 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 725 transitions. [2023-08-03 20:39:41,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 725 transitions. [2023-08-03 20:39:41,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:39:41,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 725 transitions. [2023-08-03 20:39:41,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:39:41,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:39:41,823 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:39:41,823 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 280 flow. Second operand 3 states and 725 transitions. [2023-08-03 20:39:41,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 502 flow [2023-08-03 20:39:46,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 97 transitions, 500 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:39:46,553 INFO L231 Difference]: Finished difference. Result has 77 places, 78 transitions, 290 flow [2023-08-03 20:39:46,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=77, PETRI_TRANSITIONS=78} [2023-08-03 20:39:46,553 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 15 predicate places. [2023-08-03 20:39:46,554 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 290 flow [2023-08-03 20:39:46,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:39:46,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:39:46,554 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:39:46,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 20:39:46,761 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,SelfDestructingSolverStorable12 [2023-08-03 20:39:46,761 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)] === [2023-08-03 20:39:46,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:39:46,762 INFO L85 PathProgramCache]: Analyzing trace with hash 519591526, now seen corresponding path program 1 times [2023-08-03 20:39:46,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:39:46,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443612054] [2023-08-03 20:39:46,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:39:46,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:39:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:39:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 20:39:46,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:39:46,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443612054] [2023-08-03 20:39:46,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443612054] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:39:46,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31055080] [2023-08-03 20:39:46,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:39:46,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:39:46,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:39:46,839 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) [2023-08-03 20:39:46,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 20:39:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:39:46,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:39:46,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:39:46,969 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 20:39:46,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:39:46,983 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 20:39:46,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31055080] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:39:46,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:39:46,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:39:46,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673519863] [2023-08-03 20:39:46,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:39:46,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:39:46,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:39:46,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:39:46,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:39:47,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 503 [2023-08-03 20:39:47,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 290 flow. Second operand has 5 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:39:47,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:39:47,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 503 [2023-08-03 20:39:47,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:40:05,576 INFO L124 PetriNetUnfolderBase]: 188658/229943 cut-off events. [2023-08-03 20:40:05,576 INFO L125 PetriNetUnfolderBase]: For 22003/22003 co-relation queries the response was YES. [2023-08-03 20:40:06,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484111 conditions, 229943 events. 188658/229943 cut-off events. For 22003/22003 co-relation queries the response was YES. Maximal size of possible extension queue 5073. Compared 1202217 event pairs, 67625 based on Foata normal form. 243/140497 useless extension candidates. Maximal degree in co-relation 400637. Up to 212651 conditions per place. [2023-08-03 20:40:07,289 INFO L140 encePairwiseOnDemand]: 500/503 looper letters, 85 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2023-08-03 20:40:07,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 100 transitions, 506 flow [2023-08-03 20:40:07,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:40:07,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:40:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 940 transitions. [2023-08-03 20:40:07,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671968190854871 [2023-08-03 20:40:07,291 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 940 transitions. [2023-08-03 20:40:07,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 940 transitions. [2023-08-03 20:40:07,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:40:07,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 940 transitions. [2023-08-03 20:40:07,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:07,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:07,296 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:07,296 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 290 flow. Second operand 4 states and 940 transitions. [2023-08-03 20:40:07,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 100 transitions, 506 flow [2023-08-03 20:40:12,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 100 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:40:13,000 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 286 flow [2023-08-03 20:40:13,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2023-08-03 20:40:13,001 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 17 predicate places. [2023-08-03 20:40:13,001 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 286 flow [2023-08-03 20:40:13,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:13,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:40:13,002 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:40:13,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 20:40:13,203 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,SelfDestructingSolverStorable13 [2023-08-03 20:40:13,203 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)] === [2023-08-03 20:40:13,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:40:13,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1891641127, now seen corresponding path program 1 times [2023-08-03 20:40:13,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:40:13,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000159412] [2023-08-03 20:40:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:40:13,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:40:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:40:13,263 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 20:40:13,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:40:13,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000159412] [2023-08-03 20:40:13,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000159412] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:40:13,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004771618] [2023-08-03 20:40:13,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:40:13,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:40:13,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:40:13,265 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) [2023-08-03 20:40:13,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 20:40:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:40:13,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:40:13,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:40:13,424 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 20:40:13,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:40:13,440 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 20:40:13,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004771618] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:40:13,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:40:13,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:40:13,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045513741] [2023-08-03 20:40:13,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:40:13,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:40:13,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:40:13,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:40:13,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:40:13,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 503 [2023-08-03 20:40:13,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 221.4) internal successors, (1107), 5 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:13,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:40:13,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 503 [2023-08-03 20:40:13,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:40:24,985 INFO L124 PetriNetUnfolderBase]: 121203/148232 cut-off events. [2023-08-03 20:40:24,985 INFO L125 PetriNetUnfolderBase]: For 17583/17583 co-relation queries the response was YES. [2023-08-03 20:40:25,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311733 conditions, 148232 events. 121203/148232 cut-off events. For 17583/17583 co-relation queries the response was YES. Maximal size of possible extension queue 2636. Compared 719989 event pairs, 29065 based on Foata normal form. 1458/91501 useless extension candidates. Maximal degree in co-relation 290963. Up to 71818 conditions per place. [2023-08-03 20:40:26,038 INFO L140 encePairwiseOnDemand]: 499/503 looper letters, 93 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2023-08-03 20:40:26,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 109 transitions, 556 flow [2023-08-03 20:40:26,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:40:26,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:40:26,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 949 transitions. [2023-08-03 20:40:26,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716699801192843 [2023-08-03 20:40:26,040 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 949 transitions. [2023-08-03 20:40:26,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 949 transitions. [2023-08-03 20:40:26,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:40:26,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 949 transitions. [2023-08-03 20:40:26,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 237.25) internal successors, (949), 4 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:26,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:26,045 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:26,045 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 286 flow. Second operand 4 states and 949 transitions. [2023-08-03 20:40:26,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 109 transitions, 556 flow [2023-08-03 20:40:27,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 109 transitions, 550 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 20:40:27,723 INFO L231 Difference]: Finished difference. Result has 81 places, 78 transitions, 300 flow [2023-08-03 20:40:27,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=81, PETRI_TRANSITIONS=78} [2023-08-03 20:40:27,723 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 19 predicate places. [2023-08-03 20:40:27,723 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 78 transitions, 300 flow [2023-08-03 20:40:27,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.4) internal successors, (1107), 5 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:27,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:40:27,724 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:40:27,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 20:40:27,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 20:40:27,925 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)] === [2023-08-03 20:40:27,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:40:27,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1744772344, now seen corresponding path program 1 times [2023-08-03 20:40:27,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:40:27,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028368590] [2023-08-03 20:40:27,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:40:27,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:40:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:40:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 20:40:27,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:40:27,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028368590] [2023-08-03 20:40:27,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028368590] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:40:27,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356324771] [2023-08-03 20:40:27,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:40:27,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:40:27,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:40:27,987 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:40:28,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 20:40:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:40:28,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:40:28,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:40:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 20:40:28,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:40:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 20:40:28,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356324771] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:40:28,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:40:28,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:40:28,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537666777] [2023-08-03 20:40:28,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:40:28,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:40:28,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:40:28,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:40:28,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:40:28,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 503 [2023-08-03 20:40:28,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 300 flow. Second operand has 5 states, 5 states have (on average 221.8) internal successors, (1109), 5 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:28,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:40:28,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 503 [2023-08-03 20:40:28,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:40:39,707 INFO L124 PetriNetUnfolderBase]: 115308/140700 cut-off events. [2023-08-03 20:40:39,707 INFO L125 PetriNetUnfolderBase]: For 34166/34166 co-relation queries the response was YES. [2023-08-03 20:40:40,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309059 conditions, 140700 events. 115308/140700 cut-off events. For 34166/34166 co-relation queries the response was YES. Maximal size of possible extension queue 2636. Compared 672261 event pairs, 44506 based on Foata normal form. 694/85905 useless extension candidates. Maximal degree in co-relation 305958. Up to 101422 conditions per place. [2023-08-03 20:40:40,918 INFO L140 encePairwiseOnDemand]: 499/503 looper letters, 94 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2023-08-03 20:40:40,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 110 transitions, 572 flow [2023-08-03 20:40:40,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:40:40,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:40:40,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 949 transitions. [2023-08-03 20:40:40,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716699801192843 [2023-08-03 20:40:40,921 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 949 transitions. [2023-08-03 20:40:40,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 949 transitions. [2023-08-03 20:40:40,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:40:40,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 949 transitions. [2023-08-03 20:40:40,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 237.25) internal successors, (949), 4 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:40,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:40,925 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:40,926 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 300 flow. Second operand 4 states and 949 transitions. [2023-08-03 20:40:40,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 110 transitions, 572 flow [2023-08-03 20:40:42,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 110 transitions, 568 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 20:40:42,412 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 316 flow [2023-08-03 20:40:42,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=316, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2023-08-03 20:40:42,413 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 23 predicate places. [2023-08-03 20:40:42,413 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 316 flow [2023-08-03 20:40:42,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.8) internal successors, (1109), 5 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:42,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:40:42,414 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:40:42,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-03 20:40:42,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-03 20:40:42,619 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)] === [2023-08-03 20:40:42,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:40:42,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1943200933, now seen corresponding path program 1 times [2023-08-03 20:40:42,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:40:42,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725845109] [2023-08-03 20:40:42,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:40:42,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:40:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:40:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 20:40:42,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:40:42,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725845109] [2023-08-03 20:40:42,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725845109] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:40:42,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007686246] [2023-08-03 20:40:42,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:40:42,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:40:42,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:40:42,691 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:40:42,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-03 20:40:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:40:42,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:40:42,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:40:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 20:40:42,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:40:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 20:40:42,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007686246] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:40:42,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:40:42,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 20:40:42,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783306789] [2023-08-03 20:40:42,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:40:42,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:40:42,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:40:42,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:40:42,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:40:42,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 503 [2023-08-03 20:40:42,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 222.2) internal successors, (1111), 5 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:42,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:40:42,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 503 [2023-08-03 20:40:42,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:40:54,659 INFO L124 PetriNetUnfolderBase]: 115284/140659 cut-off events. [2023-08-03 20:40:54,659 INFO L125 PetriNetUnfolderBase]: For 34032/34032 co-relation queries the response was YES. [2023-08-03 20:40:55,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314208 conditions, 140659 events. 115284/140659 cut-off events. For 34032/34032 co-relation queries the response was YES. Maximal size of possible extension queue 2636. Compared 672661 event pairs, 57259 based on Foata normal form. 19/85201 useless extension candidates. Maximal degree in co-relation 311051. Up to 134408 conditions per place. [2023-08-03 20:40:55,726 INFO L140 encePairwiseOnDemand]: 499/503 looper letters, 93 selfloop transitions, 3 changer transitions 3/111 dead transitions. [2023-08-03 20:40:55,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 111 transitions, 590 flow [2023-08-03 20:40:55,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:40:55,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:40:55,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 949 transitions. [2023-08-03 20:40:55,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716699801192843 [2023-08-03 20:40:55,728 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 949 transitions. [2023-08-03 20:40:55,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 949 transitions. [2023-08-03 20:40:55,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:40:55,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 949 transitions. [2023-08-03 20:40:55,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 237.25) internal successors, (949), 4 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:55,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:55,733 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:55,733 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 316 flow. Second operand 4 states and 949 transitions. [2023-08-03 20:40:55,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 111 transitions, 590 flow [2023-08-03 20:40:58,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 111 transitions, 586 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 20:40:58,953 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 314 flow [2023-08-03 20:40:58,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2023-08-03 20:40:58,954 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 27 predicate places. [2023-08-03 20:40:58,954 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 314 flow [2023-08-03 20:40:58,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.2) internal successors, (1111), 5 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:58,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:40:58,954 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:40:58,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-03 20:40:59,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:40:59,160 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)] === [2023-08-03 20:40:59,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:40:59,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1083389876, now seen corresponding path program 1 times [2023-08-03 20:40:59,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:40:59,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178285100] [2023-08-03 20:40:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:40:59,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:40:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:40:59,298 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-08-03 20:40:59,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:40:59,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178285100] [2023-08-03 20:40:59,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178285100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:40:59,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:40:59,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 20:40:59,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207904059] [2023-08-03 20:40:59,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:40:59,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:40:59,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:40:59,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:40:59,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:40:59,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 503 [2023-08-03 20:40:59,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:40:59,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:40:59,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 503 [2023-08-03 20:40:59,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:41:10,829 INFO L124 PetriNetUnfolderBase]: 107109/126549 cut-off events. [2023-08-03 20:41:10,829 INFO L125 PetriNetUnfolderBase]: For 53452/53452 co-relation queries the response was YES. [2023-08-03 20:41:11,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282632 conditions, 126549 events. 107109/126549 cut-off events. For 53452/53452 co-relation queries the response was YES. Maximal size of possible extension queue 2176. Compared 515875 event pairs, 9073 based on Foata normal form. 1/74385 useless extension candidates. Maximal degree in co-relation 282209. Up to 116374 conditions per place. [2023-08-03 20:41:11,917 INFO L140 encePairwiseOnDemand]: 495/503 looper letters, 115 selfloop transitions, 7 changer transitions 1/135 dead transitions. [2023-08-03 20:41:11,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 135 transitions, 827 flow [2023-08-03 20:41:11,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:41:11,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:41:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 763 transitions. [2023-08-03 20:41:11,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056328694499669 [2023-08-03 20:41:11,919 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 763 transitions. [2023-08-03 20:41:11,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 763 transitions. [2023-08-03 20:41:11,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:41:11,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 763 transitions. [2023-08-03 20:41:11,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:41:11,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:41:11,922 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:41:11,922 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 314 flow. Second operand 3 states and 763 transitions. [2023-08-03 20:41:11,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 135 transitions, 827 flow [2023-08-03 20:41:12,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 135 transitions, 807 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-03 20:41:12,332 INFO L231 Difference]: Finished difference. Result has 88 places, 83 transitions, 351 flow [2023-08-03 20:41:12,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=351, PETRI_PLACES=88, PETRI_TRANSITIONS=83} [2023-08-03 20:41:12,333 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 26 predicate places. [2023-08-03 20:41:12,333 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 83 transitions, 351 flow [2023-08-03 20:41:12,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:41:12,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:41:12,333 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:41:12,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-03 20:41:12,333 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)] === [2023-08-03 20:41:12,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:41:12,333 INFO L85 PathProgramCache]: Analyzing trace with hash 42587644, now seen corresponding path program 1 times [2023-08-03 20:41:12,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:41:12,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638110597] [2023-08-03 20:41:12,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:41:12,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:41:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:41:12,462 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 20:41:12,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:41:12,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638110597] [2023-08-03 20:41:12,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638110597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:41:12,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:41:12,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 20:41:12,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656072723] [2023-08-03 20:41:12,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:41:12,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:41:12,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:41:12,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:41:12,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:41:12,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 503 [2023-08-03 20:41:12,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 351 flow. Second operand has 5 states, 5 states have (on average 214.6) internal successors, (1073), 5 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:41:12,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:41:12,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 503 [2023-08-03 20:41:12,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:41:24,242 INFO L124 PetriNetUnfolderBase]: 104659/128684 cut-off events. [2023-08-03 20:41:24,242 INFO L125 PetriNetUnfolderBase]: For 71845/71845 co-relation queries the response was YES. [2023-08-03 20:41:24,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337469 conditions, 128684 events. 104659/128684 cut-off events. For 71845/71845 co-relation queries the response was YES. Maximal size of possible extension queue 2586. Compared 623777 event pairs, 48831 based on Foata normal form. 3/128685 useless extension candidates. Maximal degree in co-relation 336997. Up to 123539 conditions per place. [2023-08-03 20:41:25,510 INFO L140 encePairwiseOnDemand]: 498/503 looper letters, 70 selfloop transitions, 4 changer transitions 3/88 dead transitions. [2023-08-03 20:41:25,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 88 transitions, 515 flow [2023-08-03 20:41:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:41:25,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:41:25,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1098 transitions. [2023-08-03 20:41:25,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43658051689860833 [2023-08-03 20:41:25,513 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1098 transitions. [2023-08-03 20:41:25,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1098 transitions. [2023-08-03 20:41:25,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:41:25,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1098 transitions. [2023-08-03 20:41:25,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 219.6) internal successors, (1098), 5 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:41:25,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:41:25,517 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:41:25,517 INFO L175 Difference]: Start difference. First operand has 88 places, 83 transitions, 351 flow. Second operand 5 states and 1098 transitions. [2023-08-03 20:41:25,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 88 transitions, 515 flow [2023-08-03 20:41:26,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 88 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:41:26,804 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 372 flow [2023-08-03 20:41:26,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=372, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2023-08-03 20:41:26,804 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 32 predicate places. [2023-08-03 20:41:26,804 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 372 flow [2023-08-03 20:41:26,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 214.6) internal successors, (1073), 5 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:41:26,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:41:26,805 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:41:26,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-03 20:41:26,805 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:41:26,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:41:26,805 INFO L85 PathProgramCache]: Analyzing trace with hash -670160801, now seen corresponding path program 1 times [2023-08-03 20:41:26,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:41:26,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060636362] [2023-08-03 20:41:26,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:41:26,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:41:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:41:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-08-03 20:41:26,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:41:26,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060636362] [2023-08-03 20:41:26,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060636362] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:41:26,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396334902] [2023-08-03 20:41:26,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:41:26,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:41:26,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:41:26,934 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:41:26,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-03 20:41:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:41:27,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 20:41:27,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:41:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-08-03 20:41:27,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:41:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-08-03 20:41:27,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396334902] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-03 20:41:27,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-03 20:41:27,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-03 20:41:27,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895850739] [2023-08-03 20:41:27,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:41:27,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:41:27,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:41:27,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:41:27,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-03 20:41:27,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 503 [2023-08-03 20:41:27,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 372 flow. Second operand has 5 states, 5 states have (on average 209.6) internal successors, (1048), 5 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:41:27,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:41:27,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 503 [2023-08-03 20:41:27,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:41:40,965 INFO L124 PetriNetUnfolderBase]: 120323/146880 cut-off events. [2023-08-03 20:41:40,965 INFO L125 PetriNetUnfolderBase]: For 84215/84215 co-relation queries the response was YES. [2023-08-03 20:41:41,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379928 conditions, 146880 events. 120323/146880 cut-off events. For 84215/84215 co-relation queries the response was YES. Maximal size of possible extension queue 2798. Compared 704427 event pairs, 44500 based on Foata normal form. 4817/151697 useless extension candidates. Maximal degree in co-relation 379885. Up to 109018 conditions per place. [2023-08-03 20:41:42,291 INFO L140 encePairwiseOnDemand]: 498/503 looper letters, 124 selfloop transitions, 5 changer transitions 0/140 dead transitions. [2023-08-03 20:41:42,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 140 transitions, 888 flow [2023-08-03 20:41:42,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:41:42,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:41:42,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1113 transitions. [2023-08-03 20:41:42,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44254473161033797 [2023-08-03 20:41:42,293 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1113 transitions. [2023-08-03 20:41:42,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1113 transitions. [2023-08-03 20:41:42,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:41:42,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1113 transitions. [2023-08-03 20:41:42,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 222.6) internal successors, (1113), 5 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:41:42,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:41:42,297 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:41:42,297 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 372 flow. Second operand 5 states and 1113 transitions. [2023-08-03 20:41:42,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 140 transitions, 888 flow [2023-08-03 20:41:43,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 140 transitions, 878 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-03 20:41:43,955 INFO L231 Difference]: Finished difference. Result has 94 places, 86 transitions, 383 flow [2023-08-03 20:41:43,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=94, PETRI_TRANSITIONS=86} [2023-08-03 20:41:43,956 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 32 predicate places. [2023-08-03 20:41:43,956 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 86 transitions, 383 flow [2023-08-03 20:41:43,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 209.6) internal successors, (1048), 5 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:41:43,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:41:43,956 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:41:43,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-03 20:41:44,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:41:44,162 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:41:44,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:41:44,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1810927294, now seen corresponding path program 1 times [2023-08-03 20:41:44,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:41:44,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740259775] [2023-08-03 20:41:44,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:41:44,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:41:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:41:44,307 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-03 20:41:44,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:41:44,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740259775] [2023-08-03 20:41:44,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740259775] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:41:44,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602025673] [2023-08-03 20:41:44,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:41:44,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:41:44,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:41:44,309 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:41:44,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-03 20:41:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:41:44,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 20:41:44,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:41:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-03 20:41:44,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:41:44,548 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-03 20:41:44,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602025673] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-03 20:41:44,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-03 20:41:44,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-03 20:41:44,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227460369] [2023-08-03 20:41:44,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:41:44,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:41:44,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:41:44,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:41:44,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-03 20:41:44,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 503 [2023-08-03 20:41:44,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 86 transitions, 383 flow. Second operand has 5 states, 5 states have (on average 209.8) internal successors, (1049), 5 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:41:44,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:41:44,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 503 [2023-08-03 20:41:44,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:41:57,659 INFO L124 PetriNetUnfolderBase]: 110069/135047 cut-off events. [2023-08-03 20:41:57,660 INFO L125 PetriNetUnfolderBase]: For 109359/119697 co-relation queries the response was YES. [2023-08-03 20:41:58,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372811 conditions, 135047 events. 110069/135047 cut-off events. For 109359/119697 co-relation queries the response was YES. Maximal size of possible extension queue 2667. Compared 653633 event pairs, 47815 based on Foata normal form. 14541/149587 useless extension candidates. Maximal degree in co-relation 372762. Up to 101831 conditions per place. [2023-08-03 20:41:58,868 INFO L140 encePairwiseOnDemand]: 498/503 looper letters, 129 selfloop transitions, 5 changer transitions 0/145 dead transitions. [2023-08-03 20:41:58,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 145 transitions, 932 flow [2023-08-03 20:41:58,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:41:58,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:41:58,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1115 transitions. [2023-08-03 20:41:58,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4433399602385686 [2023-08-03 20:41:58,870 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1115 transitions. [2023-08-03 20:41:58,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1115 transitions. [2023-08-03 20:41:58,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:41:58,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1115 transitions. [2023-08-03 20:41:58,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:41:58,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:41:58,874 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:41:58,874 INFO L175 Difference]: Start difference. First operand has 94 places, 86 transitions, 383 flow. Second operand 5 states and 1115 transitions. [2023-08-03 20:41:58,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 145 transitions, 932 flow [2023-08-03 20:42:00,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 145 transitions, 915 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-03 20:42:00,199 INFO L231 Difference]: Finished difference. Result has 97 places, 87 transitions, 393 flow [2023-08-03 20:42:00,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=393, PETRI_PLACES=97, PETRI_TRANSITIONS=87} [2023-08-03 20:42:00,200 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 35 predicate places. [2023-08-03 20:42:00,200 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 87 transitions, 393 flow [2023-08-03 20:42:00,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 209.8) internal successors, (1049), 5 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:42:00,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:42:00,200 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:42:00,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-03 20:42:00,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:42:00,401 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:42:00,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:42:00,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1060998749, now seen corresponding path program 1 times [2023-08-03 20:42:00,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:42:00,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439699278] [2023-08-03 20:42:00,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:42:00,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:42:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:42:00,700 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 20:42:00,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:42:00,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439699278] [2023-08-03 20:42:00,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439699278] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:42:00,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45286370] [2023-08-03 20:42:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:42:00,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:42:00,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:42:00,703 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:42:00,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-03 20:42:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:42:00,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 20:42:00,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:42:00,999 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 20:42:00,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:42:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 20:42:01,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45286370] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:42:01,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:42:01,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2023-08-03 20:42:01,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036038485] [2023-08-03 20:42:01,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:42:01,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-03 20:42:01,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:42:01,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-03 20:42:01,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-08-03 20:42:01,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 503 [2023-08-03 20:42:01,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 87 transitions, 393 flow. Second operand has 14 states, 14 states have (on average 200.21428571428572) internal successors, (2803), 14 states have internal predecessors, (2803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:42:01,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:42:01,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 503 [2023-08-03 20:42:01,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:42:23,981 INFO L124 PetriNetUnfolderBase]: 183243/223757 cut-off events. [2023-08-03 20:42:23,981 INFO L125 PetriNetUnfolderBase]: For 234552/271409 co-relation queries the response was YES. [2023-08-03 20:42:25,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651412 conditions, 223757 events. 183243/223757 cut-off events. For 234552/271409 co-relation queries the response was YES. Maximal size of possible extension queue 3957. Compared 1144857 event pairs, 15982 based on Foata normal form. 45611/269367 useless extension candidates. Maximal degree in co-relation 651362. Up to 97240 conditions per place. [2023-08-03 20:42:26,325 INFO L140 encePairwiseOnDemand]: 492/503 looper letters, 427 selfloop transitions, 26 changer transitions 0/463 dead transitions. [2023-08-03 20:42:26,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 463 transitions, 3057 flow [2023-08-03 20:42:26,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-03 20:42:26,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-03 20:42:26,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3102 transitions. [2023-08-03 20:42:26,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44049985799488783 [2023-08-03 20:42:26,331 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3102 transitions. [2023-08-03 20:42:26,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3102 transitions. [2023-08-03 20:42:26,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:42:26,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3102 transitions. [2023-08-03 20:42:26,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 221.57142857142858) internal successors, (3102), 14 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:42:26,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 503.0) internal successors, (7545), 15 states have internal predecessors, (7545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:42:26,341 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 503.0) internal successors, (7545), 15 states have internal predecessors, (7545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:42:26,341 INFO L175 Difference]: Start difference. First operand has 97 places, 87 transitions, 393 flow. Second operand 14 states and 3102 transitions. [2023-08-03 20:42:26,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 463 transitions, 3057 flow [2023-08-03 20:42:29,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 463 transitions, 3004 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-03 20:42:29,719 INFO L231 Difference]: Finished difference. Result has 113 places, 107 transitions, 556 flow [2023-08-03 20:42:29,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=556, PETRI_PLACES=113, PETRI_TRANSITIONS=107} [2023-08-03 20:42:29,719 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 51 predicate places. [2023-08-03 20:42:29,719 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 107 transitions, 556 flow [2023-08-03 20:42:29,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 200.21428571428572) internal successors, (2803), 14 states have internal predecessors, (2803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:42:29,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:42:29,720 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:42:29,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-03 20:42:29,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:42:29,921 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:42:29,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:42:29,921 INFO L85 PathProgramCache]: Analyzing trace with hash 19662037, now seen corresponding path program 1 times [2023-08-03 20:42:29,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:42:29,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751083689] [2023-08-03 20:42:29,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:42:29,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:42:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:42:29,999 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-08-03 20:42:30,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:42:30,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751083689] [2023-08-03 20:42:30,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751083689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:42:30,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:42:30,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 20:42:30,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157844313] [2023-08-03 20:42:30,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:42:30,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:42:30,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:42:30,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:42:30,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:42:30,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 503 [2023-08-03 20:42:30,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 107 transitions, 556 flow. Second operand has 5 states, 5 states have (on average 216.4) internal successors, (1082), 5 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:42:30,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:42:30,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 503 [2023-08-03 20:42:30,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:43:05,432 INFO L124 PetriNetUnfolderBase]: 248951/307671 cut-off events. [2023-08-03 20:43:05,432 INFO L125 PetriNetUnfolderBase]: For 588878/652194 co-relation queries the response was YES. [2023-08-03 20:43:07,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036286 conditions, 307671 events. 248951/307671 cut-off events. For 588878/652194 co-relation queries the response was YES. Maximal size of possible extension queue 5740. Compared 1732175 event pairs, 15252 based on Foata normal form. 71016/378687 useless extension candidates. Maximal degree in co-relation 1036227. Up to 130962 conditions per place. [2023-08-03 20:43:08,687 INFO L140 encePairwiseOnDemand]: 497/503 looper letters, 282 selfloop transitions, 12 changer transitions 3/308 dead transitions. [2023-08-03 20:43:08,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 308 transitions, 2166 flow [2023-08-03 20:43:08,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 20:43:08,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 20:43:08,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1449 transitions. [2023-08-03 20:43:08,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801192842942346 [2023-08-03 20:43:08,691 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1449 transitions. [2023-08-03 20:43:08,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1449 transitions. [2023-08-03 20:43:08,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:43:08,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1449 transitions. [2023-08-03 20:43:08,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:43:08,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 503.0) internal successors, (3521), 7 states have internal predecessors, (3521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:43:08,697 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 503.0) internal successors, (3521), 7 states have internal predecessors, (3521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:43:08,697 INFO L175 Difference]: Start difference. First operand has 113 places, 107 transitions, 556 flow. Second operand 6 states and 1449 transitions. [2023-08-03 20:43:08,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 308 transitions, 2166 flow [2023-08-03 20:43:36,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 308 transitions, 2097 flow, removed 31 selfloop flow, removed 3 redundant places. [2023-08-03 20:43:36,918 INFO L231 Difference]: Finished difference. Result has 118 places, 115 transitions, 637 flow [2023-08-03 20:43:36,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=637, PETRI_PLACES=118, PETRI_TRANSITIONS=115} [2023-08-03 20:43:36,919 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 56 predicate places. [2023-08-03 20:43:36,919 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 115 transitions, 637 flow [2023-08-03 20:43:36,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.4) internal successors, (1082), 5 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:43:36,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:43:36,920 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:43:36,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-03 20:43:36,920 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:43:36,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:43:36,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1677820633, now seen corresponding path program 2 times [2023-08-03 20:43:36,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:43:36,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803590712] [2023-08-03 20:43:36,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:43:36,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:43:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:43:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-03 20:43:37,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:43:37,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803590712] [2023-08-03 20:43:37,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803590712] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:43:37,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786863674] [2023-08-03 20:43:37,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 20:43:37,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:43:37,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:43:37,098 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:43:37,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-03 20:43:37,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 20:43:37,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 20:43:37,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-03 20:43:37,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:43:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-08-03 20:43:37,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:43:37,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786863674] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:43:37,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:43:37,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-08-03 20:43:37,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982498034] [2023-08-03 20:43:37,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:43:37,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 20:43:37,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:43:37,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 20:43:37,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-03 20:43:37,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 503 [2023-08-03 20:43:37,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 115 transitions, 637 flow. Second operand has 4 states, 4 states have (on average 222.25) internal successors, (889), 4 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:43:37,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:43:37,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 503 [2023-08-03 20:43:37,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:44:18,383 INFO L124 PetriNetUnfolderBase]: 267808/336299 cut-off events. [2023-08-03 20:44:18,383 INFO L125 PetriNetUnfolderBase]: For 1008044/1087772 co-relation queries the response was YES. [2023-08-03 20:44:21,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213524 conditions, 336299 events. 267808/336299 cut-off events. For 1008044/1087772 co-relation queries the response was YES. Maximal size of possible extension queue 6623. Compared 1963169 event pairs, 92030 based on Foata normal form. 86261/422325 useless extension candidates. Maximal degree in co-relation 1213466. Up to 248023 conditions per place. [2023-08-03 20:44:22,613 INFO L140 encePairwiseOnDemand]: 499/503 looper letters, 151 selfloop transitions, 9 changer transitions 0/175 dead transitions. [2023-08-03 20:44:22,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 175 transitions, 1294 flow [2023-08-03 20:44:22,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:44:22,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:44:22,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 941 transitions. [2023-08-03 20:44:22,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4676938369781312 [2023-08-03 20:44:22,616 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 941 transitions. [2023-08-03 20:44:22,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 941 transitions. [2023-08-03 20:44:22,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:44:22,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 941 transitions. [2023-08-03 20:44:22,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 235.25) internal successors, (941), 4 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:44:22,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:44:22,620 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:44:22,620 INFO L175 Difference]: Start difference. First operand has 118 places, 115 transitions, 637 flow. Second operand 4 states and 941 transitions. [2023-08-03 20:44:22,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 175 transitions, 1294 flow [2023-08-03 20:45:13,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 175 transitions, 1254 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-08-03 20:45:13,108 INFO L231 Difference]: Finished difference. Result has 122 places, 115 transitions, 643 flow [2023-08-03 20:45:13,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=643, PETRI_PLACES=122, PETRI_TRANSITIONS=115} [2023-08-03 20:45:13,109 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 60 predicate places. [2023-08-03 20:45:13,109 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 115 transitions, 643 flow [2023-08-03 20:45:13,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 222.25) internal successors, (889), 4 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:45:13,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:45:13,109 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:45:13,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-03 20:45:13,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:45:13,310 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:45:13,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:45:13,310 INFO L85 PathProgramCache]: Analyzing trace with hash -458524193, now seen corresponding path program 1 times [2023-08-03 20:45:13,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:45:13,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108300123] [2023-08-03 20:45:13,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:45:13,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:45:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:45:14,443 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-08-03 20:45:14,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:45:14,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108300123] [2023-08-03 20:45:14,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108300123] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:45:14,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171907428] [2023-08-03 20:45:14,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:45:14,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:45:14,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:45:14,445 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:45:14,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-03 20:45:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:45:15,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 106 conjunts are in the unsatisfiable core [2023-08-03 20:45:15,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:45:15,298 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-03 20:45:15,451 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-03 20:45:15,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 20:45:15,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 20:45:15,749 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-03 20:45:15,750 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-08-03 20:45:16,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 20:45:16,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 20:45:16,175 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-03 20:45:16,175 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 29 [2023-08-03 20:45:16,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 20:45:16,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 20:45:16,325 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-03 20:45:16,325 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 29 [2023-08-03 20:45:16,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 20:45:16,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 20:45:16,522 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-03 20:45:16,522 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 29 [2023-08-03 20:45:16,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 20:45:16,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 20:45:16,621 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-03 20:45:16,621 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 29 [2023-08-03 20:45:16,991 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-03 20:45:17,007 INFO L322 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2023-08-03 20:45:17,007 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 33 [2023-08-03 20:45:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 20:45:17,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:45:17,389 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1184 (Array Int Int))) (= c_~res1~0 (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1184)) (.cse1 (* 4 c_~M~0))) (+ (* 2 (select (select .cse0 c_~B~0.base) (+ .cse1 c_~B~0.offset))) (* 2 (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1))) c_~res2~0)))) is different from false [2023-08-03 20:45:26,099 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1180 (Array Int Int)) (v_ArrVal_1184 (Array Int Int)) (v_ArrVal_1182 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1180))) (= (+ (select (select .cse0 c_~A~0.base) c_~A~0.offset) c_~res1~0 (select (select .cse0 c_~B~0.base) c_~B~0.offset)) (let ((.cse1 (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1182) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1184)) (.cse2 (* 4 c_~M~0))) (+ c_~res2~0 (* (select (select .cse1 c_~B~0.base) (+ .cse2 c_~B~0.offset)) 2) (* (select (select .cse1 c_~A~0.base) (+ c_~A~0.offset .cse2)) 2)))))) is different from false [2023-08-03 20:45:26,128 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1180 (Array Int Int)) (v_ArrVal_1184 (Array Int Int)) (v_ArrVal_1182 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1180))) (= (let ((.cse0 (store (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1182) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1184)) (.cse1 (* 4 c_~M~0))) (+ c_~res2~0 (* (select (select .cse0 c_~B~0.base) (+ .cse1 c_~B~0.offset)) 2) (* (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)) 2))) (let ((.cse3 (* |c_thread1Thread1of2ForFork1_~i~0#1| 4))) (+ (select (select .cse2 c_~A~0.base) c_~A~0.offset) c_~res1~0 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset .cse3)) (select (select |c_#memory_int| c_~B~0.base) (+ .cse3 c_~B~0.offset)) (select (select .cse2 c_~B~0.base) c_~B~0.offset)))))) is different from false [2023-08-03 20:45:26,141 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1180 (Array Int Int)) (v_ArrVal_1184 (Array Int Int)) (v_ArrVal_1182 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1180))) (= (+ (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) (select (select .cse0 c_~A~0.base) c_~A~0.offset) (select (select |c_#memory_int| c_~B~0.base) c_~B~0.offset) c_~res1~0 (select (select .cse0 c_~B~0.base) c_~B~0.offset)) (let ((.cse1 (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1182) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1184)) (.cse2 (* 4 c_~M~0))) (+ c_~res2~0 (* (select (select .cse1 c_~B~0.base) (+ .cse2 c_~B~0.offset)) 2) (* (select (select .cse1 c_~A~0.base) (+ c_~A~0.offset .cse2)) 2)))))) is different from false [2023-08-03 20:45:26,163 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1180 (Array Int Int)) (v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1184 (Array Int Int)) (v_ArrVal_1182 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1180))) (= (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1179))) (+ (select (select .cse0 c_~A~0.base) c_~A~0.offset) (select (select .cse1 c_~A~0.base) c_~A~0.offset) c_~res1~0 (select (select .cse1 c_~B~0.base) c_~B~0.offset) (select (select .cse0 c_~B~0.base) c_~B~0.offset))) (let ((.cse2 (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1182) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1184)) (.cse3 (* 4 c_~M~0))) (+ c_~res2~0 (* (select (select .cse2 c_~B~0.base) (+ .cse3 c_~B~0.offset)) 2) (* (select (select .cse2 c_~A~0.base) (+ c_~A~0.offset .cse3)) 2)))))) is different from false [2023-08-03 20:45:26,193 WARN L839 $PredicateComparison]: unable to prove that (forall ((~M~0 Int)) (or (< ~M~0 0) (forall ((v_ArrVal_1180 (Array Int Int)) (v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1184 (Array Int Int)) (v_ArrVal_1182 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1180))) (= (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1179))) (+ (select (select .cse0 c_~A~0.base) c_~A~0.offset) (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (select (select .cse1 c_~A~0.base) c_~A~0.offset) c_~res1~0 (select (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (let ((.cse2 (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1182) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1184)) (.cse3 (* ~M~0 4))) (+ (* (select (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2) c_~res2~0 (* (select (select .cse2 c_~A~0.base) (+ c_~A~0.offset .cse3)) 2)))))) (<= c_~N~0 ~M~0))) is different from false [2023-08-03 20:45:26,209 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 20:45:26,209 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 149 treesize of output 90 [2023-08-03 20:45:26,455 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 20:45:26,458 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 393206 treesize of output 327738 [2023-08-03 20:45:26,956 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 20:45:26,957 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2582 treesize of output 2398 [2023-08-03 20:45:27,063 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 20:45:27,064 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2390 treesize of output 2222 [2023-08-03 20:45:27,127 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 20:45:27,127 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2166 treesize of output 2046 [2023-08-03 20:45:27,195 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 20:45:27,196 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2038 treesize of output 1662 [2023-08-03 20:45:28,256 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-03 20:45:28,304 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-03 20:45:28,372 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-03 20:45:28,425 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-03 20:45:28,478 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-03 20:45:28,770 WARN L667 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-03 20:45:28,859 WARN L667 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-03 20:45:28,882 WARN L667 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-03 20:45:29,015 WARN L667 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-03 20:45:29,248 WARN L667 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-03 20:45:29,348 WARN L667 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-03 20:45:29,518 WARN L667 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-03 20:45:29,632 WARN L667 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-03 20:45:29,669 WARN L667 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-03 20:45:29,862 WARN L667 sPolynomialRelations]: Constructing 16384(two to the power of 14 dual juncts. [2023-08-03 20:45:29,999 WARN L667 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-03 20:45:30,064 WARN L667 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-03 20:45:30,137 WARN L667 sPolynomialRelations]: Constructing 16384(two to the power of 14 dual juncts. [2023-08-03 20:45:30,294 WARN L667 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-03 20:45:31,342 WARN L667 sPolynomialRelations]: Constructing 32768(two to the power of 15 dual juncts. [2023-08-03 20:45:31,513 WARN L667 sPolynomialRelations]: Constructing 16384(two to the power of 14 dual juncts. [2023-08-03 20:45:31,545 WARN L667 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-03 20:45:33,869 WARN L667 sPolynomialRelations]: Constructing 16384(two to the power of 14 dual juncts. [2023-08-03 20:45:33,919 WARN L667 sPolynomialRelations]: Constructing 65536(two to the power of 16 dual juncts. [2023-08-03 20:45:34,064 WARN L667 sPolynomialRelations]: Constructing 32768(two to the power of 15 dual juncts. [2023-08-03 20:45:34,141 WARN L667 sPolynomialRelations]: Constructing 131072(two to the power of 17 dual juncts. [2023-08-03 20:45:34,359 WARN L667 sPolynomialRelations]: Constructing 131072(two to the power of 17 dual juncts. [2023-08-03 20:45:34,551 WARN L667 sPolynomialRelations]: Constructing 262144(two to the power of 18 dual juncts. [2023-08-03 20:45:34,818 WARN L667 sPolynomialRelations]: Constructing 32768(two to the power of 15 dual juncts. [2023-08-03 20:45:34,850 WARN L667 sPolynomialRelations]: Constructing 65536(two to the power of 16 dual juncts. [2023-08-03 20:45:35,074 WARN L667 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts.