/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-horseshoe.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 20:28:14,014 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 20:28:14,091 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 20:28:14,095 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 20:28:14,096 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 20:28:14,097 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 20:28:14,097 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 20:28:14,125 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 20:28:14,126 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 20:28:14,127 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 20:28:14,128 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 20:28:14,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 20:28:14,128 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 20:28:14,129 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 20:28:14,129 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 20:28:14,130 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 20:28:14,130 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 20:28:14,130 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 20:28:14,130 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 20:28:14,130 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 20:28:14,131 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 20:28:14,131 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 20:28:14,131 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 20:28:14,131 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 20:28:14,132 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 20:28:14,132 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 20:28:14,132 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 20:28:14,132 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 20:28:14,132 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 20:28:14,133 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 20:28:14,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:28:14,134 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 20:28:14,134 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 20:28:14,134 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 20:28:14,134 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 20:28:14,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 20:28:14,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 20:28:14,134 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 20:28:14,135 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 20:28:14,135 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 20:28:14,135 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 20:28:14,135 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 20:28:14,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 20:28:14,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 20:28:14,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 20:28:14,410 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 20:28:14,410 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 20:28:14,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-horseshoe.wvr_bound2.c [2023-08-03 20:28:15,471 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 20:28:15,621 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 20:28:15,622 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-horseshoe.wvr_bound2.c [2023-08-03 20:28:15,627 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7a1cc731/cf6ba744e1814683b22a78940a1af21f/FLAGafefb823d [2023-08-03 20:28:15,639 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7a1cc731/cf6ba744e1814683b22a78940a1af21f [2023-08-03 20:28:15,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 20:28:15,642 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 20:28:15,645 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 20:28:15,645 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 20:28:15,647 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 20:28:15,648 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:28:15" (1/1) ... [2023-08-03 20:28:15,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d09ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:15, skipping insertion in model container [2023-08-03 20:28:15,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:28:15" (1/1) ... [2023-08-03 20:28:15,680 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 20:28:15,851 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-horseshoe.wvr_bound2.c[3667,3680] [2023-08-03 20:28:15,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:28:15,869 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 20:28:15,907 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-horseshoe.wvr_bound2.c[3667,3680] [2023-08-03 20:28:15,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:28:15,923 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:28:15,923 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:28:15,929 INFO L206 MainTranslator]: Completed translation [2023-08-03 20:28:15,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:15 WrapperNode [2023-08-03 20:28:15,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 20:28:15,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 20:28:15,932 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 20:28:15,932 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 20:28:15,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:15" (1/1) ... [2023-08-03 20:28:15,951 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:15" (1/1) ... [2023-08-03 20:28:15,981 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 300 [2023-08-03 20:28:15,981 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 20:28:15,982 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 20:28:15,982 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 20:28:15,982 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 20:28:15,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:15" (1/1) ... [2023-08-03 20:28:15,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:15" (1/1) ... [2023-08-03 20:28:15,995 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:15" (1/1) ... [2023-08-03 20:28:15,996 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:15" (1/1) ... [2023-08-03 20:28:16,003 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:15" (1/1) ... [2023-08-03 20:28:16,025 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:15" (1/1) ... [2023-08-03 20:28:16,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:15" (1/1) ... [2023-08-03 20:28:16,028 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:15" (1/1) ... [2023-08-03 20:28:16,031 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 20:28:16,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 20:28:16,032 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 20:28:16,032 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 20:28:16,032 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:15" (1/1) ... [2023-08-03 20:28:16,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:28:16,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:28:16,071 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 20:28:16,083 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 20:28:16,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 20:28:16,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 20:28:16,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 20:28:16,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 20:28:16,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 20:28:16,106 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 20:28:16,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 20:28:16,106 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 20:28:16,107 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 20:28:16,107 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 20:28:16,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 20:28:16,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 20:28:16,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 20:28:16,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 20:28:16,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 20:28:16,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 20:28:16,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 20:28:16,109 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 20:28:16,198 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 20:28:16,201 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 20:28:16,593 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 20:28:16,724 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 20:28:16,724 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-03 20:28:16,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:28:16 BoogieIcfgContainer [2023-08-03 20:28:16,727 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 20:28:16,728 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 20:28:16,728 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 20:28:16,731 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 20:28:16,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 08:28:15" (1/3) ... [2023-08-03 20:28:16,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd8ab46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:28:16, skipping insertion in model container [2023-08-03 20:28:16,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:28:15" (2/3) ... [2023-08-03 20:28:16,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd8ab46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:28:16, skipping insertion in model container [2023-08-03 20:28:16,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:28:16" (3/3) ... [2023-08-03 20:28:16,733 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-horseshoe.wvr_bound2.c [2023-08-03 20:28:16,739 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 20:28:16,747 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 20:28:16,747 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 20:28:16,748 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 20:28:16,802 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 20:28:16,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 249 transitions, 540 flow [2023-08-03 20:28:17,006 INFO L124 PetriNetUnfolderBase]: 111/718 cut-off events. [2023-08-03 20:28:17,006 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:28:17,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 718 events. 111/718 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3261 event pairs, 0 based on Foata normal form. 0/597 useless extension candidates. Maximal degree in co-relation 431. Up to 16 conditions per place. [2023-08-03 20:28:17,016 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 249 transitions, 540 flow [2023-08-03 20:28:17,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 249 transitions, 540 flow [2023-08-03 20:28:17,031 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:28:17,051 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 249 transitions, 540 flow [2023-08-03 20:28:17,055 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 249 transitions, 540 flow [2023-08-03 20:28:17,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 249 transitions, 540 flow [2023-08-03 20:28:17,142 INFO L124 PetriNetUnfolderBase]: 111/718 cut-off events. [2023-08-03 20:28:17,142 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:28:17,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 718 events. 111/718 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3261 event pairs, 0 based on Foata normal form. 0/597 useless extension candidates. Maximal degree in co-relation 431. Up to 16 conditions per place. [2023-08-03 20:28:17,156 INFO L119 LiptonReduction]: Number of co-enabled transitions 5638 [2023-08-03 20:28:23,736 INFO L134 LiptonReduction]: Checked pairs total: 12408 [2023-08-03 20:28:23,736 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-08-03 20:28:23,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:28:23,754 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;@2b565db0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:28:23,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:28:23,760 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:28:23,760 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2023-08-03 20:28:23,760 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 20:28:23,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:28:23,761 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-03 20:28:23,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === 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 20:28:23,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:28:23,765 INFO L85 PathProgramCache]: Analyzing trace with hash 860637486, now seen corresponding path program 1 times [2023-08-03 20:28:23,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:28:23,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835900347] [2023-08-03 20:28:23,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:28:23,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:28:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:28:23,995 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 20:28:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:28:24,126 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 20:28:24,128 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 20:28:24,129 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 20:28:24,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 20:28:24,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 20:28:24,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 20:28:24,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 20:28:24,133 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 20:28:24,136 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 20:28:24,137 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 20:28:24,184 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 20:28:24,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 293 transitions, 676 flow [2023-08-03 20:28:24,847 INFO L124 PetriNetUnfolderBase]: 919/4212 cut-off events. [2023-08-03 20:28:24,847 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:28:24,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4886 conditions, 4212 events. 919/4212 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 33128 event pairs, 11 based on Foata normal form. 0/3537 useless extension candidates. Maximal degree in co-relation 2523. Up to 192 conditions per place. [2023-08-03 20:28:24,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 293 transitions, 676 flow [2023-08-03 20:28:24,918 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 293 transitions, 676 flow [2023-08-03 20:28:24,919 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:28:24,919 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 293 transitions, 676 flow [2023-08-03 20:28:24,919 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 293 transitions, 676 flow [2023-08-03 20:28:24,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 293 transitions, 676 flow [2023-08-03 20:28:25,477 INFO L124 PetriNetUnfolderBase]: 919/4212 cut-off events. [2023-08-03 20:28:25,477 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:28:25,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4886 conditions, 4212 events. 919/4212 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 33128 event pairs, 11 based on Foata normal form. 0/3537 useless extension candidates. Maximal degree in co-relation 2523. Up to 192 conditions per place. [2023-08-03 20:28:25,576 INFO L119 LiptonReduction]: Number of co-enabled transitions 14672 [2023-08-03 20:28:31,717 INFO L134 LiptonReduction]: Checked pairs total: 38800 [2023-08-03 20:28:31,717 INFO L136 LiptonReduction]: Total number of compositions: 258 [2023-08-03 20:28:31,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:28:31,721 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;@2b565db0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:28:31,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:28:31,724 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:28:31,724 INFO L124 PetriNetUnfolderBase]: 3/33 cut-off events. [2023-08-03 20:28:31,724 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 20:28:31,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:28:31,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:28:31,725 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 20:28:31,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:28:31,726 INFO L85 PathProgramCache]: Analyzing trace with hash 380457325, now seen corresponding path program 1 times [2023-08-03 20:28:31,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:28:31,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653277401] [2023-08-03 20:28:31,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:28:31,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:28:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:28:31,826 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 20:28:31,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:28:31,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653277401] [2023-08-03 20:28:31,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653277401] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:28:31,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:28:31,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 20:28:31,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137027608] [2023-08-03 20:28:31,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:28:31,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:28:31,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:28:31,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:28:31,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:28:31,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 551 [2023-08-03 20:28:31,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 85 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 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 20:28:31,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:28:31,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 551 [2023-08-03 20:28:31,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:29:51,468 INFO L124 PetriNetUnfolderBase]: 863260/1046375 cut-off events. [2023-08-03 20:29:51,468 INFO L125 PetriNetUnfolderBase]: For 114512/114512 co-relation queries the response was YES. [2023-08-03 20:29:54,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126254 conditions, 1046375 events. 863260/1046375 cut-off events. For 114512/114512 co-relation queries the response was YES. Maximal size of possible extension queue 19880. Compared 6026976 event pairs, 506238 based on Foata normal form. 0/723500 useless extension candidates. Maximal degree in co-relation 686954. Up to 1020030 conditions per place. [2023-08-03 20:29:58,182 INFO L140 encePairwiseOnDemand]: 543/551 looper letters, 67 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-03 20:29:58,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 84 transitions, 396 flow [2023-08-03 20:29:58,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:29:58,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:29:58,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 765 transitions. [2023-08-03 20:29:58,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627949183303085 [2023-08-03 20:29:58,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 765 transitions. [2023-08-03 20:29:58,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 765 transitions. [2023-08-03 20:29:58,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:29:58,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 765 transitions. [2023-08-03 20:29:58,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 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 20:29:58,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 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 20:29:58,214 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 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 20:29:58,216 INFO L175 Difference]: Start difference. First operand has 68 places, 85 transitions, 260 flow. Second operand 3 states and 765 transitions. [2023-08-03 20:29:58,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 84 transitions, 396 flow [2023-08-03 20:29:58,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 84 transitions, 396 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 20:29:58,484 INFO L231 Difference]: Finished difference. Result has 70 places, 81 transitions, 262 flow [2023-08-03 20:29:58,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=70, PETRI_TRANSITIONS=81} [2023-08-03 20:29:58,489 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2023-08-03 20:29:58,489 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 81 transitions, 262 flow [2023-08-03 20:29:58,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 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 20:29:58,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:29:58,490 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 20:29:58,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 20:29:58,490 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 20:29:58,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:29:58,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1785257585, now seen corresponding path program 1 times [2023-08-03 20:29:58,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:29:58,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55520664] [2023-08-03 20:29:58,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:29:58,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:29:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:29:58,604 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 20:29:58,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:29:58,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55520664] [2023-08-03 20:29:58,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55520664] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:29:58,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482282692] [2023-08-03 20:29:58,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:29:58,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:29:58,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:29:58,609 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 20:29:58,613 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 20:29:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:29:58,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:29:58,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:29:58,768 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 20:29:58,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:29:58,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482282692] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:29:58,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:29:58,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 20:29:58,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342659291] [2023-08-03 20:29:58,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:29:58,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:29:58,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:29:58,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:29:58,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:29:58,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 551 [2023-08-03 20:29:58,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 81 transitions, 262 flow. Second operand has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 0 states have call successors, (0), 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 20:29:58,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:29:58,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 551 [2023-08-03 20:29:58,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:31:16,961 INFO L124 PetriNetUnfolderBase]: 863170/1046291 cut-off events. [2023-08-03 20:31:16,962 INFO L125 PetriNetUnfolderBase]: For 114452/114452 co-relation queries the response was YES. [2023-08-03 20:31:20,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126072 conditions, 1046291 events. 863170/1046291 cut-off events. For 114452/114452 co-relation queries the response was YES. Maximal size of possible extension queue 19632. Compared 6006720 event pairs, 427679 based on Foata normal form. 9/723471 useless extension candidates. Maximal degree in co-relation 1231147. Up to 1019878 conditions per place. [2023-08-03 20:31:23,762 INFO L140 encePairwiseOnDemand]: 547/551 looper letters, 70 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2023-08-03 20:31:23,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 88 transitions, 422 flow [2023-08-03 20:31:23,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:31:23,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:31:23,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1220 transitions. [2023-08-03 20:31:23,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44283121597096187 [2023-08-03 20:31:23,768 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1220 transitions. [2023-08-03 20:31:23,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1220 transitions. [2023-08-03 20:31:23,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:31:23,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1220 transitions. [2023-08-03 20:31:23,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 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 20:31:23,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 551.0) internal successors, (3306), 6 states have internal predecessors, (3306), 0 states have call successors, (0), 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 20:31:23,778 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 551.0) internal successors, (3306), 6 states have internal predecessors, (3306), 0 states have call successors, (0), 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 20:31:23,778 INFO L175 Difference]: Start difference. First operand has 70 places, 81 transitions, 262 flow. Second operand 5 states and 1220 transitions. [2023-08-03 20:31:23,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 88 transitions, 422 flow [2023-08-03 20:31:23,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 88 transitions, 412 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 20:31:23,900 INFO L231 Difference]: Finished difference. Result has 72 places, 81 transitions, 267 flow [2023-08-03 20:31:23,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=267, PETRI_PLACES=72, PETRI_TRANSITIONS=81} [2023-08-03 20:31:23,901 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2023-08-03 20:31:23,901 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 81 transitions, 267 flow [2023-08-03 20:31:23,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 0 states have call successors, (0), 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 20:31:23,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:31:23,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:31:23,906 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 20:31:24,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:31:24,106 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 20:31:24,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:31:24,106 INFO L85 PathProgramCache]: Analyzing trace with hash 111308927, now seen corresponding path program 1 times [2023-08-03 20:31:24,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:31:24,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106653576] [2023-08-03 20:31:24,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:31:24,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:31:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:31:24,185 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 20:31:24,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:31:24,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106653576] [2023-08-03 20:31:24,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106653576] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:31:24,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:31:24,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 20:31:24,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696094103] [2023-08-03 20:31:24,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:31:24,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:31:24,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:31:24,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:31:24,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:31:24,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 551 [2023-08-03 20:31:24,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 81 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 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 20:31:24,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:31:24,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 551 [2023-08-03 20:31:24,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:32:42,161 INFO L124 PetriNetUnfolderBase]: 854038/1037709 cut-off events. [2023-08-03 20:32:42,161 INFO L125 PetriNetUnfolderBase]: For 95981/95981 co-relation queries the response was YES. [2023-08-03 20:32:45,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2097576 conditions, 1037709 events. 854038/1037709 cut-off events. For 95981/95981 co-relation queries the response was YES. Maximal size of possible extension queue 20179. Compared 6041672 event pairs, 462042 based on Foata normal form. 0/717914 useless extension candidates. Maximal degree in co-relation 713516. Up to 1008842 conditions per place. [2023-08-03 20:32:49,218 INFO L140 encePairwiseOnDemand]: 548/551 looper letters, 74 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2023-08-03 20:32:49,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 91 transitions, 441 flow [2023-08-03 20:32:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:32:49,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:32:49,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 766 transitions. [2023-08-03 20:32:49,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4633998790078645 [2023-08-03 20:32:49,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 766 transitions. [2023-08-03 20:32:49,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 766 transitions. [2023-08-03 20:32:49,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:32:49,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 766 transitions. [2023-08-03 20:32:49,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 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 20:32:49,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 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 20:32:49,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 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 20:32:49,228 INFO L175 Difference]: Start difference. First operand has 72 places, 81 transitions, 267 flow. Second operand 3 states and 766 transitions. [2023-08-03 20:32:49,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 91 transitions, 441 flow [2023-08-03 20:32:49,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 91 transitions, 434 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 20:32:49,295 INFO L231 Difference]: Finished difference. Result has 73 places, 82 transitions, 275 flow [2023-08-03 20:32:49,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=73, PETRI_TRANSITIONS=82} [2023-08-03 20:32:49,296 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 5 predicate places. [2023-08-03 20:32:49,296 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 82 transitions, 275 flow [2023-08-03 20:32:49,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 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 20:32:49,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:32:49,297 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 20:32:49,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 20:32:49,297 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 20:32:49,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:32:49,297 INFO L85 PathProgramCache]: Analyzing trace with hash -509427787, now seen corresponding path program 1 times [2023-08-03 20:32:49,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:32:49,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169163106] [2023-08-03 20:32:49,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:32:49,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:32:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:32:49,389 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 20:32:49,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:32:49,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169163106] [2023-08-03 20:32:49,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169163106] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:32:49,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116386507] [2023-08-03 20:32:49,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:32:49,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:32:49,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:32:49,396 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 20:32:49,397 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 20:32:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:32:49,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:32:49,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:32:49,506 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 20:32:49,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:32:49,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116386507] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:32:49,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:32:49,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 20:32:49,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674405928] [2023-08-03 20:32:49,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:32:49,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:32:49,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:32:49,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:32:49,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:32:49,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 551 [2023-08-03 20:32:49,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 82 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 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 20:32:49,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:32:49,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 551 [2023-08-03 20:32:49,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:34:10,187 INFO L124 PetriNetUnfolderBase]: 854542/1045245 cut-off events. [2023-08-03 20:34:10,187 INFO L125 PetriNetUnfolderBase]: For 79944/79944 co-relation queries the response was YES. [2023-08-03 20:34:13,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2105703 conditions, 1045245 events. 854542/1045245 cut-off events. For 79944/79944 co-relation queries the response was YES. Maximal size of possible extension queue 21304. Compared 6271185 event pairs, 474972 based on Foata normal form. 0/725004 useless extension candidates. Maximal degree in co-relation 717200. Up to 1000046 conditions per place. [2023-08-03 20:34:17,709 INFO L140 encePairwiseOnDemand]: 548/551 looper letters, 83 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-03 20:34:17,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 99 transitions, 479 flow [2023-08-03 20:34:17,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:34:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:34:17,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2023-08-03 20:34:17,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4676346037507562 [2023-08-03 20:34:17,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2023-08-03 20:34:17,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2023-08-03 20:34:17,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:34:17,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2023-08-03 20:34:17,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 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 20:34:17,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 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 20:34:17,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 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 20:34:17,718 INFO L175 Difference]: Start difference. First operand has 73 places, 82 transitions, 275 flow. Second operand 3 states and 773 transitions. [2023-08-03 20:34:17,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 99 transitions, 479 flow [2023-08-03 20:34:17,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 99 transitions, 476 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:34:17,763 INFO L231 Difference]: Finished difference. Result has 75 places, 83 transitions, 284 flow [2023-08-03 20:34:17,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=75, PETRI_TRANSITIONS=83} [2023-08-03 20:34:17,764 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2023-08-03 20:34:17,764 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 83 transitions, 284 flow [2023-08-03 20:34:17,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 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 20:34:17,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:34:17,765 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:34:17,776 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 20:34:17,969 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 20:34:17,970 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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 20:34:17,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:34:17,970 INFO L85 PathProgramCache]: Analyzing trace with hash -456727409, now seen corresponding path program 1 times [2023-08-03 20:34:17,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:34:17,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11116640] [2023-08-03 20:34:17,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:34:17,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:34:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:34:18,055 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 20:34:18,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:34:18,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11116640] [2023-08-03 20:34:18,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11116640] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:34:18,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623327575] [2023-08-03 20:34:18,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:34:18,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:34:18,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:34:18,063 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 20:34:18,065 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 20:34:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:34:18,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:34:18,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:34:18,191 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 20:34:18,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:34:18,212 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 20:34:18,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623327575] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:34:18,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:34:18,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:34:18,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213423618] [2023-08-03 20:34:18,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:34:18,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:34:18,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:34:18,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:34:18,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:34:18,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 551 [2023-08-03 20:34:18,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 83 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 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 20:34:18,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:34:18,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 551 [2023-08-03 20:34:18,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:35:47,039 INFO L124 PetriNetUnfolderBase]: 826986/1010822 cut-off events. [2023-08-03 20:35:47,039 INFO L125 PetriNetUnfolderBase]: For 84745/84745 co-relation queries the response was YES. [2023-08-03 20:35:50,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2047487 conditions, 1010822 events. 826986/1010822 cut-off events. For 84745/84745 co-relation queries the response was YES. Maximal size of possible extension queue 20873. Compared 5985990 event pairs, 412248 based on Foata normal form. 3/705574 useless extension candidates. Maximal degree in co-relation 585148. Up to 976541 conditions per place. [2023-08-03 20:35:54,719 INFO L140 encePairwiseOnDemand]: 548/551 looper letters, 72 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2023-08-03 20:35:54,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 89 transitions, 442 flow [2023-08-03 20:35:54,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:35:54,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:35:54,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 990 transitions. [2023-08-03 20:35:54,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44918330308529947 [2023-08-03 20:35:54,723 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 990 transitions. [2023-08-03 20:35:54,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 990 transitions. [2023-08-03 20:35:54,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:35:54,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 990 transitions. [2023-08-03 20:35:54,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 247.5) internal successors, (990), 4 states have internal predecessors, (990), 0 states have call successors, (0), 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 20:35:54,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 551.0) internal successors, (2755), 5 states have internal predecessors, (2755), 0 states have call successors, (0), 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 20:35:54,730 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 551.0) internal successors, (2755), 5 states have internal predecessors, (2755), 0 states have call successors, (0), 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 20:35:54,731 INFO L175 Difference]: Start difference. First operand has 75 places, 83 transitions, 284 flow. Second operand 4 states and 990 transitions. [2023-08-03 20:35:54,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 89 transitions, 442 flow [2023-08-03 20:35:54,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 89 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:35:54,834 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 280 flow [2023-08-03 20:35:54,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2023-08-03 20:35:54,835 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 9 predicate places. [2023-08-03 20:35:54,836 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 280 flow [2023-08-03 20:35:54,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 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 20:35:54,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:35:54,837 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:35:54,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 20:35:55,041 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 20:35:55,041 INFO L420 AbstractCegarLoop]: === Iteration 6 === 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 20:35:55,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:35:55,042 INFO L85 PathProgramCache]: Analyzing trace with hash 204235612, now seen corresponding path program 1 times [2023-08-03 20:35:55,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:35:55,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897252039] [2023-08-03 20:35:55,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:35:55,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:35:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:35:55,122 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 20:35:55,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:35:55,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897252039] [2023-08-03 20:35:55,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897252039] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:35:55,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73945153] [2023-08-03 20:35:55,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:35:55,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:35:55,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:35:55,124 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 20:35:55,125 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 20:35:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:35:55,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:35:55,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:35:55,241 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 20:35:55,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:35:55,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73945153] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:35:55,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:35:55,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 20:35:55,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575547061] [2023-08-03 20:35:55,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:35:55,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:35:55,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:35:55,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:35:55,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:35:55,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 551 [2023-08-03 20:35:55,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 280 flow. Second operand has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 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 20:35:55,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:35:55,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 551 [2023-08-03 20:35:55,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:37:10,468 INFO L124 PetriNetUnfolderBase]: 826047/1009496 cut-off events. [2023-08-03 20:37:10,469 INFO L125 PetriNetUnfolderBase]: For 83447/83447 co-relation queries the response was YES. [2023-08-03 20:37:14,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2043656 conditions, 1009496 events. 826047/1009496 cut-off events. For 83447/83447 co-relation queries the response was YES. Maximal size of possible extension queue 20880. Compared 5974831 event pairs, 196413 based on Foata normal form. 225/704746 useless extension candidates. Maximal degree in co-relation 876026. Up to 973788 conditions per place. [2023-08-03 20:37:17,879 INFO L140 encePairwiseOnDemand]: 547/551 looper letters, 90 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2023-08-03 20:37:17,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 107 transitions, 518 flow [2023-08-03 20:37:17,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:37:17,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:37:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1238 transitions. [2023-08-03 20:37:17,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44936479128856627 [2023-08-03 20:37:17,883 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1238 transitions. [2023-08-03 20:37:17,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1238 transitions. [2023-08-03 20:37:17,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:37:17,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1238 transitions. [2023-08-03 20:37:17,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.6) internal successors, (1238), 5 states have internal predecessors, (1238), 0 states have call successors, (0), 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 20:37:17,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 551.0) internal successors, (3306), 6 states have internal predecessors, (3306), 0 states have call successors, (0), 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 20:37:17,890 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 551.0) internal successors, (3306), 6 states have internal predecessors, (3306), 0 states have call successors, (0), 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 20:37:17,890 INFO L175 Difference]: Start difference. First operand has 77 places, 82 transitions, 280 flow. Second operand 5 states and 1238 transitions. [2023-08-03 20:37:17,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 107 transitions, 518 flow [2023-08-03 20:37:17,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 107 transitions, 504 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 20:37:17,925 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 283 flow [2023-08-03 20:37:17,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=283, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2023-08-03 20:37:17,926 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 9 predicate places. [2023-08-03 20:37:17,926 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 283 flow [2023-08-03 20:37:17,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 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 20:37:17,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:37:17,927 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 20:37:17,935 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 20:37:18,132 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 20:37:18,132 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 20:37:18,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:37:18,133 INFO L85 PathProgramCache]: Analyzing trace with hash -649395250, now seen corresponding path program 1 times [2023-08-03 20:37:18,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:37:18,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523051497] [2023-08-03 20:37:18,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:37:18,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:37:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:37:18,189 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 20:37:18,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:37:18,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523051497] [2023-08-03 20:37:18,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523051497] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:37:18,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378153249] [2023-08-03 20:37:18,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:37:18,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:37:18,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:37:18,192 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 20:37:18,194 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 20:37:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:37:18,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:37:18,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:37:18,291 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 20:37:18,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:37:18,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378153249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:37:18,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:37:18,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 20:37:18,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562320346] [2023-08-03 20:37:18,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:37:18,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:37:18,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:37:18,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:37:18,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:37:18,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 551 [2023-08-03 20:37:18,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 283 flow. Second operand has 3 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 0 states have call successors, (0), 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 20:37:18,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:37:18,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 551 [2023-08-03 20:37:18,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-03 20:38:21,817 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 20:38:21,817 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 20:38:22,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-03 20:38:22,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-03 20:38:24,811 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 20:38:24,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 20:38:24,811 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-03 20:38:24,811 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 20:38:24,812 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 20:38:24,812 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 20:38:24,812 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:38:24,814 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 20:38:24,814 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 20:38:24,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 08:38:24 BasicIcfg [2023-08-03 20:38:24,817 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 20:38:24,817 INFO L158 Benchmark]: Toolchain (without parser) took 609175.63ms. Allocated memory was 553.6MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 503.9MB in the beginning and 10.2GB in the end (delta: -9.7GB). Peak memory consumption was 8.2GB. Max. memory is 16.0GB. [2023-08-03 20:38:24,818 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 379.6MB. Free memory is still 329.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 20:38:24,818 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.12ms. Allocated memory is still 553.6MB. Free memory was 503.6MB in the beginning and 491.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 20:38:24,818 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.39ms. Allocated memory is still 553.6MB. Free memory was 491.0MB in the beginning and 488.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 20:38:24,818 INFO L158 Benchmark]: Boogie Preprocessor took 49.00ms. Allocated memory is still 553.6MB. Free memory was 488.5MB in the beginning and 486.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 20:38:24,818 INFO L158 Benchmark]: RCFGBuilder took 695.16ms. Allocated memory is still 553.6MB. Free memory was 486.5MB in the beginning and 515.5MB in the end (delta: -29.0MB). Peak memory consumption was 40.2MB. Max. memory is 16.0GB. [2023-08-03 20:38:24,819 INFO L158 Benchmark]: TraceAbstraction took 608088.86ms. Allocated memory was 553.6MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 515.5MB in the beginning and 10.2GB in the end (delta: -9.7GB). Peak memory consumption was 8.2GB. Max. memory is 16.0GB. [2023-08-03 20:38:24,820 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 379.6MB. Free memory is still 329.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 286.12ms. Allocated memory is still 553.6MB. Free memory was 503.6MB in the beginning and 491.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.39ms. Allocated memory is still 553.6MB. Free memory was 491.0MB in the beginning and 488.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 49.00ms. Allocated memory is still 553.6MB. Free memory was 488.5MB in the beginning and 486.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 695.16ms. Allocated memory is still 553.6MB. Free memory was 486.5MB in the beginning and 515.5MB in the end (delta: -29.0MB). Peak memory consumption was 40.2MB. Max. memory is 16.0GB. * TraceAbstraction took 608088.86ms. Allocated memory was 553.6MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 515.5MB in the beginning and 10.2GB in the end (delta: -9.7GB). Peak memory consumption was 8.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.7s, 223 PlacesBefore, 47 PlacesAfterwards, 249 TransitionsBefore, 56 TransitionsAfterwards, 5638 CoEnabledTransitionPairs, 7 FixpointIterations, 111 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 16 TrivialYvCompositions, 24 ConcurrentYvCompositions, 17 ChoiceCompositions, 230 TotalNumberOfCompositions, 12408 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8487, independent: 8337, independent conditional: 0, independent unconditional: 8337, dependent: 150, dependent conditional: 0, dependent unconditional: 150, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3051, independent: 3013, independent conditional: 0, independent unconditional: 3013, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8487, independent: 5324, independent conditional: 0, independent unconditional: 5324, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 3051, unknown conditional: 0, unknown unconditional: 3051] , Statistics on independence cache: Total cache size (in pairs): 289, Positive cache size: 277, Positive conditional cache size: 0, Positive unconditional cache size: 277, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.8s, 256 PlacesBefore, 68 PlacesAfterwards, 293 TransitionsBefore, 85 TransitionsAfterwards, 14672 CoEnabledTransitionPairs, 7 FixpointIterations, 110 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 34 ConcurrentYvCompositions, 20 ChoiceCompositions, 258 TotalNumberOfCompositions, 38800 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 26531, independent: 26263, independent conditional: 0, independent unconditional: 26263, dependent: 268, dependent conditional: 0, dependent unconditional: 268, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8175, independent: 8124, independent conditional: 0, independent unconditional: 8124, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 26531, independent: 18139, independent conditional: 0, independent unconditional: 18139, dependent: 217, dependent conditional: 0, dependent unconditional: 217, unknown: 8175, unknown conditional: 0, unknown unconditional: 8175] , Statistics on independence cache: Total cache size (in pairs): 977, Positive cache size: 959, Positive conditional cache size: 0, Positive unconditional cache size: 959, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 244 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.3s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.9s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 271 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 600.6s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 590.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 409 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 331 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1082 IncrementalHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 37 mSDtfsCounter, 1082 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 114 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=284occurred in iteration=4, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 212 NumberOfCodeBlocks, 212 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 217 ConstructedInterpolants, 0 QuantifiedInterpolants, 347 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1068 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 77/92 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown