/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/pthread-wmm_safe010_tso_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:11:21,935 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:11:22,000 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:11:22,005 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:11:22,006 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:11:22,006 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:11:22,007 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:11:22,037 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:11:22,038 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:11:22,038 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:11:22,039 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:11:22,039 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:11:22,040 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:11:22,040 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:11:22,040 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:11:22,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:11:22,046 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:11:22,050 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:11:22,050 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:11:22,051 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:11:22,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:11:22,052 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:11:22,053 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:11:22,053 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:11:22,053 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:11:22,053 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:11:22,053 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:11:22,054 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:11:22,054 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:11:22,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:11:22,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:11:22,055 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:11:22,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:11:22,056 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:11:22,056 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:11:22,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:11:22,056 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:11:22,056 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:11:22,056 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:11:22,057 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:11:22,057 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:11:22,057 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:11:22,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:11:22,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:11:22,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:11:22,263 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:11:22,263 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:11:22,264 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe010_tso_bound2.i [2023-08-03 18:11:23,384 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:11:23,571 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:11:23,572 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe010_tso_bound2.i [2023-08-03 18:11:23,587 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe4785aee/f883eefb69fd4a3d9b63f34e1f94f047/FLAG8b385fc41 [2023-08-03 18:11:23,599 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe4785aee/f883eefb69fd4a3d9b63f34e1f94f047 [2023-08-03 18:11:23,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:11:23,602 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:11:23,603 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:11:23,603 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:11:23,606 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:11:23,607 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:11:23" (1/1) ... [2023-08-03 18:11:23,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c9aed42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:11:23, skipping insertion in model container [2023-08-03 18:11:23,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:11:23" (1/1) ... [2023-08-03 18:11:23,645 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:11:23,773 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe010_tso_bound2.i[945,958] [2023-08-03 18:11:23,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:11:23,941 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:11:23,951 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe010_tso_bound2.i[945,958] [2023-08-03 18:11:23,958 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:11:23,960 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:11:23,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:11:23,995 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:11:23,996 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:11:24,001 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:11:24,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:11:24 WrapperNode [2023-08-03 18:11:24,002 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:11:24,003 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:11:24,003 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:11:24,003 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:11:24,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:11:24" (1/1) ... [2023-08-03 18:11:24,020 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:11:24" (1/1) ... [2023-08-03 18:11:24,038 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2023-08-03 18:11:24,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:11:24,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:11:24,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:11:24,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:11:24,046 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:11:24" (1/1) ... [2023-08-03 18:11:24,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:11:24" (1/1) ... [2023-08-03 18:11:24,049 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:11:24" (1/1) ... [2023-08-03 18:11:24,049 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:11:24" (1/1) ... [2023-08-03 18:11:24,053 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:11:24" (1/1) ... [2023-08-03 18:11:24,056 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:11:24" (1/1) ... [2023-08-03 18:11:24,058 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:11:24" (1/1) ... [2023-08-03 18:11:24,059 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:11:24" (1/1) ... [2023-08-03 18:11:24,061 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:11:24,062 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:11:24,062 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:11:24,062 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:11:24,062 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:11:24" (1/1) ... [2023-08-03 18:11:24,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:11:24,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:11:24,091 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 18:11:24,097 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 18:11:24,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:11:24,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:11:24,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:11:24,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:11:24,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:11:24,124 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:11:24,124 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:11:24,124 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:11:24,125 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:11:24,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:11:24,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:11:24,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:11:24,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:11:24,126 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 18:11:24,224 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:11:24,226 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:11:24,355 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:11:24,360 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:11:24,361 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 18:11:24,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:11:24 BoogieIcfgContainer [2023-08-03 18:11:24,363 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:11:24,365 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:11:24,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:11:24,368 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:11:24,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:11:23" (1/3) ... [2023-08-03 18:11:24,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54bef30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:11:24, skipping insertion in model container [2023-08-03 18:11:24,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:11:24" (2/3) ... [2023-08-03 18:11:24,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54bef30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:11:24, skipping insertion in model container [2023-08-03 18:11:24,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:11:24" (3/3) ... [2023-08-03 18:11:24,371 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe010_tso_bound2.i [2023-08-03 18:11:24,378 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:11:24,387 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:11:24,387 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 18:11:24,387 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:11:24,477 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:11:24,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 81 transitions, 172 flow [2023-08-03 18:11:24,592 INFO L124 PetriNetUnfolderBase]: 14/192 cut-off events. [2023-08-03 18:11:24,593 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:11:24,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 192 events. 14/192 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 556 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 109. Up to 8 conditions per place. [2023-08-03 18:11:24,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 81 transitions, 172 flow [2023-08-03 18:11:24,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 71 transitions, 152 flow [2023-08-03 18:11:24,607 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:11:24,615 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 71 transitions, 152 flow [2023-08-03 18:11:24,617 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 71 transitions, 152 flow [2023-08-03 18:11:24,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 71 transitions, 152 flow [2023-08-03 18:11:24,644 INFO L124 PetriNetUnfolderBase]: 10/152 cut-off events. [2023-08-03 18:11:24,644 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:11:24,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 152 events. 10/152 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 386 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 89. Up to 8 conditions per place. [2023-08-03 18:11:24,646 INFO L119 LiptonReduction]: Number of co-enabled transitions 876 [2023-08-03 18:11:26,168 INFO L134 LiptonReduction]: Checked pairs total: 1658 [2023-08-03 18:11:26,168 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-08-03 18:11:26,180 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:11:26,186 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;@5bc5f064, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:11:26,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 18:11:26,189 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:11:26,189 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-03 18:11:26,189 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:11:26,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:11:26,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 18:11:26,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:11:26,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:11:26,194 INFO L85 PathProgramCache]: Analyzing trace with hash 9035706, now seen corresponding path program 1 times [2023-08-03 18:11:26,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:11:26,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138750780] [2023-08-03 18:11:26,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:26,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:11:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:26,415 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 18:11:26,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:11:26,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138750780] [2023-08-03 18:11:26,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138750780] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:11:26,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:11:26,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:11:26,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260623111] [2023-08-03 18:11:26,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:11:26,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:11:26,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:11:26,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:11:26,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:11:26,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 142 [2023-08-03 18:11:26,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 18:11:26,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:11:26,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 142 [2023-08-03 18:11:26,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:11:26,545 INFO L124 PetriNetUnfolderBase]: 66/155 cut-off events. [2023-08-03 18:11:26,546 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:11:26,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 155 events. 66/155 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 579 event pairs, 44 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 290. Up to 130 conditions per place. [2023-08-03 18:11:26,550 INFO L140 encePairwiseOnDemand]: 138/142 looper letters, 15 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-03 18:11:26,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 86 flow [2023-08-03 18:11:26,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:11:26,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:11:26,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-08-03 18:11:26,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375586854460094 [2023-08-03 18:11:26,570 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-08-03 18:11:26,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-08-03 18:11:26,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:11:26,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-08-03 18:11:26,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 18:11:26,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 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 18:11:26,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 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 18:11:26,582 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 48 flow. Second operand 3 states and 229 transitions. [2023-08-03 18:11:26,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 86 flow [2023-08-03 18:11:26,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 86 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 18:11:26,586 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 54 flow [2023-08-03 18:11:26,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-08-03 18:11:26,592 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2023-08-03 18:11:26,592 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 54 flow [2023-08-03 18:11:26,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 18:11:26,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:11:26,593 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:11:26,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:11:26,594 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] === [2023-08-03 18:11:26,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:11:26,595 INFO L85 PathProgramCache]: Analyzing trace with hash 97458738, now seen corresponding path program 1 times [2023-08-03 18:11:26,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:11:26,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56212603] [2023-08-03 18:11:26,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:26,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:11:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:11:26,618 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:11:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:11:26,644 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:11:26,645 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:11:26,646 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 18:11:26,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 18:11:26,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 18:11:26,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:11:26,648 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 18:11:26,650 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:11:26,651 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:11:26,669 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:11:26,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 95 transitions, 214 flow [2023-08-03 18:11:26,729 INFO L124 PetriNetUnfolderBase]: 30/411 cut-off events. [2023-08-03 18:11:26,729 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 18:11:26,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 411 events. 30/411 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1733 event pairs, 0 based on Foata normal form. 0/360 useless extension candidates. Maximal degree in co-relation 295. Up to 18 conditions per place. [2023-08-03 18:11:26,733 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 95 transitions, 214 flow [2023-08-03 18:11:26,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 85 transitions, 194 flow [2023-08-03 18:11:26,734 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:11:26,735 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 85 transitions, 194 flow [2023-08-03 18:11:26,736 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 85 transitions, 194 flow [2023-08-03 18:11:26,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 85 transitions, 194 flow [2023-08-03 18:11:26,770 INFO L124 PetriNetUnfolderBase]: 21/321 cut-off events. [2023-08-03 18:11:26,770 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 18:11:26,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 321 events. 21/321 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1185 event pairs, 0 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 235. Up to 18 conditions per place. [2023-08-03 18:11:26,778 INFO L119 LiptonReduction]: Number of co-enabled transitions 2088 [2023-08-03 18:11:28,236 INFO L134 LiptonReduction]: Checked pairs total: 4512 [2023-08-03 18:11:28,236 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-08-03 18:11:28,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:11:28,240 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;@5bc5f064, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:11:28,240 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 18:11:28,245 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:11:28,245 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-03 18:11:28,245 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:11:28,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:11:28,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 18:11:28,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:11:28,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:11:28,250 INFO L85 PathProgramCache]: Analyzing trace with hash 14392091, now seen corresponding path program 1 times [2023-08-03 18:11:28,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:11:28,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096800783] [2023-08-03 18:11:28,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:28,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:11:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:28,313 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 18:11:28,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:11:28,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096800783] [2023-08-03 18:11:28,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096800783] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:11:28,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:11:28,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:11:28,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728941628] [2023-08-03 18:11:28,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:11:28,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:11:28,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:11:28,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:11:28,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:11:28,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 160 [2023-08-03 18:11:28,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 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 18:11:28,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:11:28,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 160 [2023-08-03 18:11:28,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:11:28,545 INFO L124 PetriNetUnfolderBase]: 1674/2842 cut-off events. [2023-08-03 18:11:28,546 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2023-08-03 18:11:28,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5549 conditions, 2842 events. 1674/2842 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16981 event pairs, 1140 based on Foata normal form. 0/2649 useless extension candidates. Maximal degree in co-relation 1582. Up to 2476 conditions per place. [2023-08-03 18:11:28,565 INFO L140 encePairwiseOnDemand]: 156/160 looper letters, 22 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-08-03 18:11:28,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 136 flow [2023-08-03 18:11:28,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:11:28,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:11:28,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2023-08-03 18:11:28,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2023-08-03 18:11:28,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2023-08-03 18:11:28,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2023-08-03 18:11:28,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:11:28,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2023-08-03 18:11:28,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 18:11:28,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 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 18:11:28,571 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 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 18:11:28,571 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 82 flow. Second operand 3 states and 272 transitions. [2023-08-03 18:11:28,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 136 flow [2023-08-03 18:11:28,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 32 transitions, 132 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 18:11:28,573 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 88 flow [2023-08-03 18:11:28,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2023-08-03 18:11:28,574 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2023-08-03 18:11:28,574 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 88 flow [2023-08-03 18:11:28,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 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 18:11:28,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:11:28,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:11:28,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 18:11:28,575 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:11:28,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:11:28,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1259768777, now seen corresponding path program 1 times [2023-08-03 18:11:28,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:11:28,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702243912] [2023-08-03 18:11:28,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:28,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:11:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:28,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:11:28,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:11:28,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702243912] [2023-08-03 18:11:28,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702243912] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:11:28,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14823763] [2023-08-03 18:11:28,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:28,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:11:28,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:11:28,641 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 18:11:28,665 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 18:11:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:28,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:11:28,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:11:28,731 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 18:11:28,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:11:28,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14823763] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:11:28,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:11:28,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:11:28,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475213387] [2023-08-03 18:11:28,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:11:28,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:11:28,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:11:28,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:11:28,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:11:28,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 160 [2023-08-03 18:11:28,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 18:11:28,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:11:28,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 160 [2023-08-03 18:11:28,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:11:28,994 INFO L124 PetriNetUnfolderBase]: 1646/2732 cut-off events. [2023-08-03 18:11:28,995 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-03 18:11:28,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5378 conditions, 2732 events. 1646/2732 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 16008 event pairs, 1120 based on Foata normal form. 0/2575 useless extension candidates. Maximal degree in co-relation 5343. Up to 2299 conditions per place. [2023-08-03 18:11:29,010 INFO L140 encePairwiseOnDemand]: 157/160 looper letters, 27 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-03 18:11:29,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 162 flow [2023-08-03 18:11:29,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:11:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:11:29,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-08-03 18:11:29,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2023-08-03 18:11:29,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-08-03 18:11:29,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-08-03 18:11:29,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:11:29,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-08-03 18:11:29,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 18:11:29,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 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 18:11:29,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 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 18:11:29,015 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 88 flow. Second operand 3 states and 275 transitions. [2023-08-03 18:11:29,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 162 flow [2023-08-03 18:11:29,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:11:29,017 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 98 flow [2023-08-03 18:11:29,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2023-08-03 18:11:29,018 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2023-08-03 18:11:29,018 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 98 flow [2023-08-03 18:11:29,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 18:11:29,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:11:29,018 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 18:11:29,027 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 18:11:29,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:11:29,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:11:29,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:11:29,224 INFO L85 PathProgramCache]: Analyzing trace with hash -199359901, now seen corresponding path program 1 times [2023-08-03 18:11:29,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:11:29,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763531492] [2023-08-03 18:11:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:29,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:11:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:29,316 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 18:11:29,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:11:29,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763531492] [2023-08-03 18:11:29,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763531492] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:11:29,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239777070] [2023-08-03 18:11:29,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:29,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:11:29,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:11:29,326 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 18:11:29,356 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 18:11:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:29,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:11:29,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:11:29,431 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 18:11:29,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:11:29,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239777070] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:11:29,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:11:29,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 18:11:29,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052667881] [2023-08-03 18:11:29,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:11:29,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:11:29,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:11:29,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:11:29,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:11:29,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 160 [2023-08-03 18:11:29,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 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 18:11:29,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:11:29,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 160 [2023-08-03 18:11:29,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:11:29,677 INFO L124 PetriNetUnfolderBase]: 1634/2715 cut-off events. [2023-08-03 18:11:29,678 INFO L125 PetriNetUnfolderBase]: For 351/351 co-relation queries the response was YES. [2023-08-03 18:11:29,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5671 conditions, 2715 events. 1634/2715 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 15798 event pairs, 744 based on Foata normal form. 9/2711 useless extension candidates. Maximal degree in co-relation 1600. Up to 2377 conditions per place. [2023-08-03 18:11:29,696 INFO L140 encePairwiseOnDemand]: 156/160 looper letters, 26 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-08-03 18:11:29,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 175 flow [2023-08-03 18:11:29,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:11:29,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:11:29,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 435 transitions. [2023-08-03 18:11:29,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54375 [2023-08-03 18:11:29,698 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 435 transitions. [2023-08-03 18:11:29,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 435 transitions. [2023-08-03 18:11:29,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:11:29,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 435 transitions. [2023-08-03 18:11:29,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 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 18:11:29,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 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 18:11:29,702 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 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 18:11:29,702 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 98 flow. Second operand 5 states and 435 transitions. [2023-08-03 18:11:29,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 175 flow [2023-08-03 18:11:29,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 171 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 18:11:29,704 INFO L231 Difference]: Finished difference. Result has 45 places, 30 transitions, 114 flow [2023-08-03 18:11:29,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2023-08-03 18:11:29,705 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2023-08-03 18:11:29,705 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 114 flow [2023-08-03 18:11:29,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 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 18:11:29,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:11:29,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:11:29,713 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 18:11:29,910 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 18:11:29,910 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:11:29,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:11:29,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2000568283, now seen corresponding path program 1 times [2023-08-03 18:11:29,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:11:29,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212787255] [2023-08-03 18:11:29,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:29,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:11:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:29,953 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 18:11:29,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:11:29,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212787255] [2023-08-03 18:11:29,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212787255] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:11:29,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883317572] [2023-08-03 18:11:29,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:29,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:11:29,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:11:29,958 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 18:11:29,963 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 18:11:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:30,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:11:30,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:11:30,040 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 18:11:30,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:11:30,062 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 18:11:30,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883317572] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:11:30,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:11:30,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 18:11:30,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452465124] [2023-08-03 18:11:30,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:11:30,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:11:30,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:11:30,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:11:30,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:11:30,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 160 [2023-08-03 18:11:30,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 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 18:11:30,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:11:30,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 160 [2023-08-03 18:11:30,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:11:30,285 INFO L124 PetriNetUnfolderBase]: 1324/2144 cut-off events. [2023-08-03 18:11:30,286 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2023-08-03 18:11:30,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4484 conditions, 2144 events. 1324/2144 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11582 event pairs, 558 based on Foata normal form. 3/2137 useless extension candidates. Maximal degree in co-relation 1600. Up to 1882 conditions per place. [2023-08-03 18:11:30,299 INFO L140 encePairwiseOnDemand]: 157/160 looper letters, 26 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2023-08-03 18:11:30,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 36 transitions, 178 flow [2023-08-03 18:11:30,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:11:30,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:11:30,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2023-08-03 18:11:30,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5515625 [2023-08-03 18:11:30,302 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2023-08-03 18:11:30,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2023-08-03 18:11:30,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:11:30,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2023-08-03 18:11:30,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 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 18:11:30,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 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 18:11:30,305 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 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 18:11:30,305 INFO L175 Difference]: Start difference. First operand has 45 places, 30 transitions, 114 flow. Second operand 4 states and 353 transitions. [2023-08-03 18:11:30,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 36 transitions, 178 flow [2023-08-03 18:11:30,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 36 transitions, 173 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 18:11:30,307 INFO L231 Difference]: Finished difference. Result has 46 places, 29 transitions, 105 flow [2023-08-03 18:11:30,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=46, PETRI_TRANSITIONS=29} [2023-08-03 18:11:30,308 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2023-08-03 18:11:30,308 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 29 transitions, 105 flow [2023-08-03 18:11:30,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 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 18:11:30,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:11:30,309 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:11:30,320 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 18:11:30,514 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 18:11:30,514 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:11:30,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:11:30,515 INFO L85 PathProgramCache]: Analyzing trace with hash 229387872, now seen corresponding path program 1 times [2023-08-03 18:11:30,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:11:30,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908142000] [2023-08-03 18:11:30,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:30,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:11:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:30,587 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:11:30,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:11:30,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908142000] [2023-08-03 18:11:30,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908142000] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:11:30,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619503960] [2023-08-03 18:11:30,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:30,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:11:30,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:11:30,590 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 18:11:30,615 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 18:11:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:30,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:11:30,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:11:30,684 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:11:30,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:11:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:11:30,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619503960] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:11:30,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:11:30,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:11:30,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727745500] [2023-08-03 18:11:30,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:11:30,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:11:30,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:11:30,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:11:30,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:11:30,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 160 [2023-08-03 18:11:30,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 29 transitions, 105 flow. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 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 18:11:30,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:11:30,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 160 [2023-08-03 18:11:30,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:11:30,905 INFO L124 PetriNetUnfolderBase]: 1216/1888 cut-off events. [2023-08-03 18:11:30,905 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2023-08-03 18:11:30,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4042 conditions, 1888 events. 1216/1888 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9496 event pairs, 400 based on Foata normal form. 27/1905 useless extension candidates. Maximal degree in co-relation 1439. Up to 943 conditions per place. [2023-08-03 18:11:30,919 INFO L140 encePairwiseOnDemand]: 156/160 looper letters, 34 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-08-03 18:11:30,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 213 flow [2023-08-03 18:11:30,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:11:30,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:11:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 362 transitions. [2023-08-03 18:11:30,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565625 [2023-08-03 18:11:30,921 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 362 transitions. [2023-08-03 18:11:30,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 362 transitions. [2023-08-03 18:11:30,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:11:30,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 362 transitions. [2023-08-03 18:11:30,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 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 18:11:30,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 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 18:11:30,924 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 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 18:11:30,924 INFO L175 Difference]: Start difference. First operand has 46 places, 29 transitions, 105 flow. Second operand 4 states and 362 transitions. [2023-08-03 18:11:30,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 213 flow [2023-08-03 18:11:30,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 207 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:11:30,926 INFO L231 Difference]: Finished difference. Result has 48 places, 30 transitions, 119 flow [2023-08-03 18:11:30,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=30} [2023-08-03 18:11:30,927 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2023-08-03 18:11:30,927 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 30 transitions, 119 flow [2023-08-03 18:11:30,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 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 18:11:30,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:11:30,927 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:11:30,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 18:11:31,133 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 18:11:31,133 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:11:31,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:11:31,134 INFO L85 PathProgramCache]: Analyzing trace with hash -270052017, now seen corresponding path program 1 times [2023-08-03 18:11:31,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:11:31,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396528315] [2023-08-03 18:11:31,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:31,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:11:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:11:31,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:11:31,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396528315] [2023-08-03 18:11:31,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396528315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:11:31,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:11:31,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 18:11:31,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415797074] [2023-08-03 18:11:31,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:11:31,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:11:31,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:11:31,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:11:31,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:11:31,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 160 [2023-08-03 18:11:31,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 30 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 18:11:31,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:11:31,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 160 [2023-08-03 18:11:31,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:11:31,434 INFO L124 PetriNetUnfolderBase]: 1186/1921 cut-off events. [2023-08-03 18:11:31,435 INFO L125 PetriNetUnfolderBase]: For 1270/1270 co-relation queries the response was YES. [2023-08-03 18:11:31,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4492 conditions, 1921 events. 1186/1921 cut-off events. For 1270/1270 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10312 event pairs, 274 based on Foata normal form. 9/1929 useless extension candidates. Maximal degree in co-relation 1588. Up to 1471 conditions per place. [2023-08-03 18:11:31,449 INFO L140 encePairwiseOnDemand]: 156/160 looper letters, 32 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-03 18:11:31,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 239 flow [2023-08-03 18:11:31,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:11:31,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:11:31,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-08-03 18:11:31,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2023-08-03 18:11:31,451 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-08-03 18:11:31,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-08-03 18:11:31,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:11:31,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-08-03 18:11:31,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 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 18:11:31,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 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 18:11:31,454 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 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 18:11:31,455 INFO L175 Difference]: Start difference. First operand has 48 places, 30 transitions, 119 flow. Second operand 3 states and 280 transitions. [2023-08-03 18:11:31,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 239 flow [2023-08-03 18:11:31,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 232 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-03 18:11:31,458 INFO L231 Difference]: Finished difference. Result has 50 places, 32 transitions, 134 flow [2023-08-03 18:11:31,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=50, PETRI_TRANSITIONS=32} [2023-08-03 18:11:31,459 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 13 predicate places. [2023-08-03 18:11:31,459 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 32 transitions, 134 flow [2023-08-03 18:11:31,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 18:11:31,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:11:31,460 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:11:31,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 18:11:31,460 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:11:31,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:11:31,460 INFO L85 PathProgramCache]: Analyzing trace with hash -270051835, now seen corresponding path program 1 times [2023-08-03 18:11:31,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:11:31,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936055585] [2023-08-03 18:11:31,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:31,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:11:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:31,515 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 18:11:31,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:11:31,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936055585] [2023-08-03 18:11:31,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936055585] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:11:31,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366627656] [2023-08-03 18:11:31,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:31,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:11:31,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:11:31,517 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 18:11:31,520 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 18:11:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:31,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:11:31,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:11:31,609 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 18:11:31,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:11:31,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366627656] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:11:31,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:11:31,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:11:31,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264010851] [2023-08-03 18:11:31,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:11:31,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:11:31,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:11:31,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:11:31,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:11:31,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 160 [2023-08-03 18:11:31,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 32 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 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 18:11:31,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:11:31,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 160 [2023-08-03 18:11:31,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:11:31,812 INFO L124 PetriNetUnfolderBase]: 970/1498 cut-off events. [2023-08-03 18:11:31,812 INFO L125 PetriNetUnfolderBase]: For 604/604 co-relation queries the response was YES. [2023-08-03 18:11:31,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3892 conditions, 1498 events. 970/1498 cut-off events. For 604/604 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 6951 event pairs, 22 based on Foata normal form. 81/1569 useless extension candidates. Maximal degree in co-relation 1369. Up to 852 conditions per place. [2023-08-03 18:11:31,820 INFO L140 encePairwiseOnDemand]: 157/160 looper letters, 42 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-08-03 18:11:31,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 271 flow [2023-08-03 18:11:31,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:11:31,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:11:31,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 446 transitions. [2023-08-03 18:11:31,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575 [2023-08-03 18:11:31,821 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 446 transitions. [2023-08-03 18:11:31,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 446 transitions. [2023-08-03 18:11:31,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:11:31,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 446 transitions. [2023-08-03 18:11:31,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 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 18:11:31,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 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 18:11:31,824 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 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 18:11:31,824 INFO L175 Difference]: Start difference. First operand has 50 places, 32 transitions, 134 flow. Second operand 5 states and 446 transitions. [2023-08-03 18:11:31,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 271 flow [2023-08-03 18:11:31,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 262 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:11:31,827 INFO L231 Difference]: Finished difference. Result has 50 places, 30 transitions, 124 flow [2023-08-03 18:11:31,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=50, PETRI_TRANSITIONS=30} [2023-08-03 18:11:31,827 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 13 predicate places. [2023-08-03 18:11:31,827 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 30 transitions, 124 flow [2023-08-03 18:11:31,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 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 18:11:31,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:11:31,828 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:11:31,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 18:11:32,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:11:32,034 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:11:32,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:11:32,034 INFO L85 PathProgramCache]: Analyzing trace with hash 353576784, now seen corresponding path program 1 times [2023-08-03 18:11:32,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:11:32,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073063523] [2023-08-03 18:11:32,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:32,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:11:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:32,174 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 18:11:32,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:11:32,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073063523] [2023-08-03 18:11:32,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073063523] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:11:32,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039570986] [2023-08-03 18:11:32,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:32,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:11:32,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:11:32,178 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:11:32,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 18:11:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:32,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 18:11:32,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:11:32,285 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:11:32,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:11:32,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039570986] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:11:32,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:11:32,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-03 18:11:32,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823352541] [2023-08-03 18:11:32,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:11:32,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:11:32,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:11:32,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:11:32,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:11:32,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 160 [2023-08-03 18:11:32,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 30 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 18:11:32,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:11:32,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 160 [2023-08-03 18:11:32,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:11:32,417 INFO L124 PetriNetUnfolderBase]: 858/1323 cut-off events. [2023-08-03 18:11:32,417 INFO L125 PetriNetUnfolderBase]: For 1192/1192 co-relation queries the response was YES. [2023-08-03 18:11:32,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3462 conditions, 1323 events. 858/1323 cut-off events. For 1192/1192 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5519 event pairs, 204 based on Foata normal form. 16/1334 useless extension candidates. Maximal degree in co-relation 2214. Up to 1090 conditions per place. [2023-08-03 18:11:32,425 INFO L140 encePairwiseOnDemand]: 154/160 looper letters, 39 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2023-08-03 18:11:32,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 303 flow [2023-08-03 18:11:32,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:11:32,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:11:32,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-08-03 18:11:32,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2023-08-03 18:11:32,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-08-03 18:11:32,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-08-03 18:11:32,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:11:32,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-08-03 18:11:32,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 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 18:11:32,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 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 18:11:32,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 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 18:11:32,429 INFO L175 Difference]: Start difference. First operand has 50 places, 30 transitions, 124 flow. Second operand 3 states and 280 transitions. [2023-08-03 18:11:32,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 303 flow [2023-08-03 18:11:32,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 293 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:11:32,431 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 152 flow [2023-08-03 18:11:32,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2023-08-03 18:11:32,431 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 13 predicate places. [2023-08-03 18:11:32,432 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 152 flow [2023-08-03 18:11:32,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 18:11:32,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:11:32,432 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:11:32,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-03 18:11:32,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:11:32,637 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:11:32,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:11:32,638 INFO L85 PathProgramCache]: Analyzing trace with hash 316815773, now seen corresponding path program 1 times [2023-08-03 18:11:32,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:11:32,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426149538] [2023-08-03 18:11:32,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:32,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:11:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:32,742 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 18:11:32,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:11:32,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426149538] [2023-08-03 18:11:32,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426149538] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:11:32,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:11:32,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:11:32,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477454247] [2023-08-03 18:11:32,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:11:32,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:11:32,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:11:32,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:11:32,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:11:32,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 160 [2023-08-03 18:11:32,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 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 18:11:32,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:11:32,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 160 [2023-08-03 18:11:32,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:11:33,000 INFO L124 PetriNetUnfolderBase]: 2242/3435 cut-off events. [2023-08-03 18:11:33,000 INFO L125 PetriNetUnfolderBase]: For 2892/2892 co-relation queries the response was YES. [2023-08-03 18:11:33,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10162 conditions, 3435 events. 2242/3435 cut-off events. For 2892/2892 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 19154 event pairs, 603 based on Foata normal form. 88/3517 useless extension candidates. Maximal degree in co-relation 10080. Up to 2109 conditions per place. [2023-08-03 18:11:33,020 INFO L140 encePairwiseOnDemand]: 152/160 looper letters, 48 selfloop transitions, 9 changer transitions 0/61 dead transitions. [2023-08-03 18:11:33,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 61 transitions, 392 flow [2023-08-03 18:11:33,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:11:33,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:11:33,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2023-08-03 18:11:33,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2023-08-03 18:11:33,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2023-08-03 18:11:33,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2023-08-03 18:11:33,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:11:33,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2023-08-03 18:11:33,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 18:11:33,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 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 18:11:33,024 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 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 18:11:33,024 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 152 flow. Second operand 3 states and 276 transitions. [2023-08-03 18:11:33,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 61 transitions, 392 flow [2023-08-03 18:11:33,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 61 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:11:33,028 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 225 flow [2023-08-03 18:11:33,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=53, PETRI_TRANSITIONS=42} [2023-08-03 18:11:33,029 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 16 predicate places. [2023-08-03 18:11:33,029 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 225 flow [2023-08-03 18:11:33,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 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 18:11:33,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:11:33,029 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:11:33,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 18:11:33,030 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:11:33,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:11:33,030 INFO L85 PathProgramCache]: Analyzing trace with hash 524619251, now seen corresponding path program 1 times [2023-08-03 18:11:33,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:11:33,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980967465] [2023-08-03 18:11:33,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:33,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:11:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:33,112 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 18:11:33,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:11:33,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980967465] [2023-08-03 18:11:33,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980967465] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:11:33,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402063163] [2023-08-03 18:11:33,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:33,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:11:33,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:11:33,115 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:11:33,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 18:11:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:33,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-03 18:11:33,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:11:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 18:11:33,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:11:33,467 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 18:11:33,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402063163] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:11:33,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:11:33,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-08-03 18:11:33,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884101138] [2023-08-03 18:11:33,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:11:33,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-03 18:11:33,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:11:33,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-03 18:11:33,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-08-03 18:11:33,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 160 [2023-08-03 18:11:33,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 225 flow. Second operand has 14 states, 14 states have (on average 72.64285714285714) internal successors, (1017), 14 states have internal predecessors, (1017), 0 states have call successors, (0), 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 18:11:33,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:11:33,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 160 [2023-08-03 18:11:33,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:11:34,689 INFO L124 PetriNetUnfolderBase]: 5086/7483 cut-off events. [2023-08-03 18:11:34,689 INFO L125 PetriNetUnfolderBase]: For 10862/10862 co-relation queries the response was YES. [2023-08-03 18:11:34,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25284 conditions, 7483 events. 5086/7483 cut-off events. For 10862/10862 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 42902 event pairs, 145 based on Foata normal form. 368/7848 useless extension candidates. Maximal degree in co-relation 25181. Up to 2580 conditions per place. [2023-08-03 18:11:34,724 INFO L140 encePairwiseOnDemand]: 145/160 looper letters, 164 selfloop transitions, 177 changer transitions 9/352 dead transitions. [2023-08-03 18:11:34,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 352 transitions, 2449 flow [2023-08-03 18:11:34,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-03 18:11:34,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-03 18:11:34,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2072 transitions. [2023-08-03 18:11:34,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518 [2023-08-03 18:11:34,730 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2072 transitions. [2023-08-03 18:11:34,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2072 transitions. [2023-08-03 18:11:34,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:11:34,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2072 transitions. [2023-08-03 18:11:34,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 82.88) internal successors, (2072), 25 states have internal predecessors, (2072), 0 states have call successors, (0), 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 18:11:34,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 160.0) internal successors, (4160), 26 states have internal predecessors, (4160), 0 states have call successors, (0), 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 18:11:34,742 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 160.0) internal successors, (4160), 26 states have internal predecessors, (4160), 0 states have call successors, (0), 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 18:11:34,742 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 225 flow. Second operand 25 states and 2072 transitions. [2023-08-03 18:11:34,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 352 transitions, 2449 flow [2023-08-03 18:11:34,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 352 transitions, 2307 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 18:11:34,755 INFO L231 Difference]: Finished difference. Result has 92 places, 214 transitions, 1666 flow [2023-08-03 18:11:34,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1666, PETRI_PLACES=92, PETRI_TRANSITIONS=214} [2023-08-03 18:11:34,756 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 55 predicate places. [2023-08-03 18:11:34,756 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 214 transitions, 1666 flow [2023-08-03 18:11:34,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 72.64285714285714) internal successors, (1017), 14 states have internal predecessors, (1017), 0 states have call successors, (0), 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 18:11:34,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:11:34,756 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:11:34,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 18:11:34,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:11:34,962 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:11:34,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:11:34,963 INFO L85 PathProgramCache]: Analyzing trace with hash 593742114, now seen corresponding path program 1 times [2023-08-03 18:11:34,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:11:34,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820940810] [2023-08-03 18:11:34,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:34,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:11:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-03 18:11:35,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:11:35,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820940810] [2023-08-03 18:11:35,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820940810] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:11:35,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436321258] [2023-08-03 18:11:35,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:35,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:11:35,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:11:35,124 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:11:35,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 18:11:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:11:35,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-03 18:11:35,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:11:35,307 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 18:11:35,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:11:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 18:11:35,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436321258] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:11:35,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:11:35,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5, 5] total 12 [2023-08-03 18:11:35,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838784972] [2023-08-03 18:11:35,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:11:35,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-03 18:11:35,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:11:35,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-03 18:11:35,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-08-03 18:11:35,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 160 [2023-08-03 18:11:35,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 214 transitions, 1666 flow. Second operand has 14 states, 14 states have (on average 78.85714285714286) internal successors, (1104), 14 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:11:35,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:11:35,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 160 [2023-08-03 18:11:35,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:11:37,620 INFO L124 PetriNetUnfolderBase]: 9881/15297 cut-off events. [2023-08-03 18:11:37,621 INFO L125 PetriNetUnfolderBase]: For 88557/88836 co-relation queries the response was YES. [2023-08-03 18:11:37,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79828 conditions, 15297 events. 9881/15297 cut-off events. For 88557/88836 co-relation queries the response was YES. Maximal size of possible extension queue 1112. Compared 107340 event pairs, 120 based on Foata normal form. 209/15464 useless extension candidates. Maximal degree in co-relation 67995. Up to 6600 conditions per place. [2023-08-03 18:11:37,788 INFO L140 encePairwiseOnDemand]: 149/160 looper letters, 307 selfloop transitions, 380 changer transitions 139/876 dead transitions. [2023-08-03 18:11:37,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 876 transitions, 8827 flow [2023-08-03 18:11:37,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-03 18:11:37,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-03 18:11:37,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1822 transitions. [2023-08-03 18:11:37,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5422619047619047 [2023-08-03 18:11:37,794 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1822 transitions. [2023-08-03 18:11:37,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1822 transitions. [2023-08-03 18:11:37,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:11:37,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1822 transitions. [2023-08-03 18:11:37,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 86.76190476190476) internal successors, (1822), 21 states have internal predecessors, (1822), 0 states have call successors, (0), 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 18:11:37,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 160.0) internal successors, (3520), 22 states have internal predecessors, (3520), 0 states have call successors, (0), 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 18:11:37,804 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 160.0) internal successors, (3520), 22 states have internal predecessors, (3520), 0 states have call successors, (0), 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 18:11:37,804 INFO L175 Difference]: Start difference. First operand has 92 places, 214 transitions, 1666 flow. Second operand 21 states and 1822 transitions. [2023-08-03 18:11:37,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 876 transitions, 8827 flow [2023-08-03 18:11:39,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 876 transitions, 8054 flow, removed 318 selfloop flow, removed 2 redundant places. [2023-08-03 18:11:39,215 INFO L231 Difference]: Finished difference. Result has 126 places, 561 transitions, 5525 flow [2023-08-03 18:11:39,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1461, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5525, PETRI_PLACES=126, PETRI_TRANSITIONS=561} [2023-08-03 18:11:39,216 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 89 predicate places. [2023-08-03 18:11:39,216 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 561 transitions, 5525 flow [2023-08-03 18:11:39,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 78.85714285714286) internal successors, (1104), 14 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:11:39,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:11:39,217 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:11:39,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-03 18:11:39,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 18:11:39,423 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:11:39,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:11:39,423 INFO L85 PathProgramCache]: Analyzing trace with hash -490534004, now seen corresponding path program 1 times [2023-08-03 18:11:39,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:11:39,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166717851] [2023-08-03 18:11:39,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:11:39,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:11:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:11:39,441 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:11:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:11:39,475 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:11:39,475 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:11:39,475 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 18:11:39,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 18:11:39,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 18:11:39,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-03 18:11:39,476 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:11:39,486 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 18:11:39,486 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 18:11:39,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 06:11:39 BasicIcfg [2023-08-03 18:11:39,558 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 18:11:39,559 INFO L158 Benchmark]: Toolchain (without parser) took 15956.66ms. Allocated memory was 463.5MB in the beginning and 1.2GB in the end (delta: 757.1MB). Free memory was 413.9MB in the beginning and 909.4MB in the end (delta: -495.5MB). Peak memory consumption was 264.7MB. Max. memory is 16.0GB. [2023-08-03 18:11:39,559 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 333.4MB. Free memory is still 283.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 18:11:39,559 INFO L158 Benchmark]: CACSL2BoogieTranslator took 399.06ms. Allocated memory is still 463.5MB. Free memory was 413.6MB in the beginning and 393.4MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 18:11:39,560 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.24ms. Allocated memory is still 463.5MB. Free memory was 393.4MB in the beginning and 391.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 18:11:39,560 INFO L158 Benchmark]: Boogie Preprocessor took 22.06ms. Allocated memory is still 463.5MB. Free memory was 391.3MB in the beginning and 389.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 18:11:39,560 INFO L158 Benchmark]: RCFGBuilder took 301.25ms. Allocated memory is still 463.5MB. Free memory was 389.9MB in the beginning and 376.5MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 18:11:39,560 INFO L158 Benchmark]: TraceAbstraction took 15193.54ms. Allocated memory was 463.5MB in the beginning and 1.2GB in the end (delta: 757.1MB). Free memory was 375.9MB in the beginning and 909.4MB in the end (delta: -533.6MB). Peak memory consumption was 224.9MB. Max. memory is 16.0GB. [2023-08-03 18:11:39,563 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 333.4MB. Free memory is still 283.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 399.06ms. Allocated memory is still 463.5MB. Free memory was 413.6MB in the beginning and 393.4MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 35.24ms. Allocated memory is still 463.5MB. Free memory was 393.4MB in the beginning and 391.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.06ms. Allocated memory is still 463.5MB. Free memory was 391.3MB in the beginning and 389.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 301.25ms. Allocated memory is still 463.5MB. Free memory was 389.9MB in the beginning and 376.5MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 15193.54ms. Allocated memory was 463.5MB in the beginning and 1.2GB in the end (delta: 757.1MB). Free memory was 375.9MB in the beginning and 909.4MB in the end (delta: -533.6MB). Peak memory consumption was 224.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 73 PlacesBefore, 23 PlacesAfterwards, 71 TransitionsBefore, 19 TransitionsAfterwards, 876 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 61 TotalNumberOfCompositions, 1658 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1044, independent: 986, independent conditional: 0, independent unconditional: 986, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 495, independent: 471, independent conditional: 0, independent unconditional: 471, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1044, independent: 515, independent conditional: 0, independent unconditional: 515, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 495, unknown conditional: 0, unknown unconditional: 495] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 91 PlacesBefore, 37 PlacesAfterwards, 85 TransitionsBefore, 29 TransitionsAfterwards, 2088 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 65 TotalNumberOfCompositions, 4512 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2133, independent: 2028, independent conditional: 0, independent unconditional: 2028, dependent: 105, dependent conditional: 0, dependent unconditional: 105, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1071, independent: 1036, independent conditional: 0, independent unconditional: 1036, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2133, independent: 992, independent conditional: 0, independent unconditional: 992, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 1071, unknown conditional: 0, unknown unconditional: 1071] , Statistics on independence cache: Total cache size (in pairs): 89, Positive cache size: 76, Positive conditional cache size: 0, Positive unconditional cache size: 76, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L711] 0 _Bool main$tmp_guard0; [L712] 0 _Bool main$tmp_guard1; [L714] 0 int x = 0; [L716] 0 int y = 0; [L758] 0 pthread_t t2021[2]; [L759] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t2021={5:0}, x=0, y=0] [L759] COND TRUE 0 asdf<2 [L759] FCALL, FORK 0 pthread_create(&t2021[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2021[asdf], ((void *)0), P0, ((void *)0))=-3, t2021={5:0}, x=0, y=0] [L759] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t2021={5:0}, x=0, y=0] [L759] COND TRUE 0 asdf<2 [L720] 1 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L759] FCALL, FORK 0 pthread_create(&t2021[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2021[asdf], ((void *)0), P0, ((void *)0))=-2, t2021={5:0}, x=0, y=2] [L759] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2021={5:0}, x=0, y=2] [L720] 2 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L759] COND FALSE 0 !(asdf<2) [L760] 0 pthread_t t2022[2]; [L761] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2021={5:0}, t2022={3:0}, x=0, y=2] [L761] COND TRUE 0 asdf<2 [L761] FCALL, FORK 0 pthread_create(&t2022[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2022[asdf], ((void *)0), P1, ((void *)0))=-1, t2021={5:0}, t2022={3:0}, x=0, y=2] [L761] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2021={5:0}, t2022={3:0}, x=0, y=2] [L761] COND TRUE 0 asdf<2 [L761] FCALL, FORK 0 pthread_create(&t2022[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2022[asdf], ((void *)0), P1, ((void *)0))=0, t2021={5:0}, t2022={3:0}, x=0, y=2] [L761] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2021={5:0}, t2022={3:0}, x=0, y=2] [L723] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L728] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L730] 1 return 0; [L728] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L730] 2 return 0; [L761] COND FALSE 0 !(asdf<2) [L763] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L765] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) VAL [\old(cond)=1, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, cond=1, main$tmp_guard0=1, main$tmp_guard1=0, x=1, y=2] [L735] 3 __unbuffered_p1_EAX = x VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, x=1, y=2] [L765] RET 0 assume_abort_if_not(main$tmp_guard0) [L769] 0 main$tmp_guard1 = !(y == 2 && __unbuffered_p1_EAX == 1) [L771] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, x=1, y=2] - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 92 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.1s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38 IncrementalHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 7 mSDtfsCounter, 38 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=1, InterpolantAutomatonStates: 3, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 7 procedures, 106 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.8s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 736 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 648 mSDsluCounter, 215 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 172 mSDsCounter, 265 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1776 IncrementalHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 265 mSolverCounterUnsat, 43 mSDtfsCounter, 1776 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 264 GetRequests, 183 SyntacticMatches, 5 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5525occurred in iteration=11, InterpolantAutomatonStates: 79, 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, 1.5s InterpolantComputationTime, 350 NumberOfCodeBlocks, 350 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 378 ConstructedInterpolants, 0 QuantifiedInterpolants, 1308 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1075 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 23 InterpolantComputations, 7 PerfectInterpolantSequences, 155/193 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 proved your program to be incorrect! [2023-08-03 18:11:39,591 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 Received shutdown request...