/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_triangular-1_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:17:20,930 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:17:21,011 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:17:21,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:17:21,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:17:21,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:17:21,020 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:17:21,048 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:17:21,048 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:17:21,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:17:21,052 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:17:21,053 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:17:21,054 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:17:21,055 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:17:21,055 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:17:21,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:17:21,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:17:21,055 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:17:21,056 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:17:21,056 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:17:21,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:17:21,057 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:17:21,057 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:17:21,057 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:17:21,058 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:17:21,058 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:17:21,058 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:17:21,059 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:17:21,059 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:17:21,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:17:21,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:17:21,060 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:17:21,061 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:17:21,061 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:17:21,061 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:17:21,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:17:21,061 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:17:21,061 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:17:21,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:17:21,062 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:17:21,062 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:17:21,062 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:17:21,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:17:21,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:17:21,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:17:21,331 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:17:21,331 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:17:21,332 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread_triangular-1_bound2.i [2023-08-03 19:17:22,468 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:17:22,686 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:17:22,686 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread_triangular-1_bound2.i [2023-08-03 19:17:22,700 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5b8d2daa/2cc72430b3654286ad98d44934ff8e6e/FLAGc22ba7c28 [2023-08-03 19:17:22,712 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5b8d2daa/2cc72430b3654286ad98d44934ff8e6e [2023-08-03 19:17:22,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:17:22,716 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:17:22,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:17:22,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:17:22,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:17:22,720 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:17:22" (1/1) ... [2023-08-03 19:17:22,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@722a00c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:17:22, skipping insertion in model container [2023-08-03 19:17:22,721 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:17:22" (1/1) ... [2023-08-03 19:17:22,772 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:17:23,043 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_triangular-1_bound2.i[31034,31047] [2023-08-03 19:17:23,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:17:23,055 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:17:23,087 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-03 19:17:23,088 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-03 19:17:23,123 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_triangular-1_bound2.i[31034,31047] [2023-08-03 19:17:23,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:17:23,156 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 19:17:23,156 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 19:17:23,162 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:17:23,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:17:23 WrapperNode [2023-08-03 19:17:23,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:17:23,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:17:23,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:17:23,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:17:23,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:17:23" (1/1) ... [2023-08-03 19:17:23,182 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:17:23" (1/1) ... [2023-08-03 19:17:23,202 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2023-08-03 19:17:23,202 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:17:23,203 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:17:23,203 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:17:23,203 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:17:23,211 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:17:23" (1/1) ... [2023-08-03 19:17:23,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:17:23" (1/1) ... [2023-08-03 19:17:23,213 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:17:23" (1/1) ... [2023-08-03 19:17:23,214 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:17:23" (1/1) ... [2023-08-03 19:17:23,219 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:17:23" (1/1) ... [2023-08-03 19:17:23,222 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:17:23" (1/1) ... [2023-08-03 19:17:23,223 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:17:23" (1/1) ... [2023-08-03 19:17:23,224 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:17:23" (1/1) ... [2023-08-03 19:17:23,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:17:23,227 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:17:23,227 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:17:23,227 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:17:23,227 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:17:23" (1/1) ... [2023-08-03 19:17:23,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:17:23,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:17:23,255 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 19:17:23,261 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 19:17:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-03 19:17:23,283 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-03 19:17:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-03 19:17:23,283 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-03 19:17:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:17:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 19:17:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:17:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:17:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:17:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:17:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 19:17:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:17:23,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:17:23,285 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 19:17:23,388 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:17:23,390 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:17:23,525 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:17:23,531 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:17:23,531 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 19:17:23,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:17:23 BoogieIcfgContainer [2023-08-03 19:17:23,533 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:17:23,535 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:17:23,535 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:17:23,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:17:23,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:17:22" (1/3) ... [2023-08-03 19:17:23,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6776e2e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:17:23, skipping insertion in model container [2023-08-03 19:17:23,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:17:23" (2/3) ... [2023-08-03 19:17:23,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6776e2e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:17:23, skipping insertion in model container [2023-08-03 19:17:23,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:17:23" (3/3) ... [2023-08-03 19:17:23,540 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread_triangular-1_bound2.i [2023-08-03 19:17:23,547 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:17:23,556 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:17:23,556 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:17:23,556 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:17:23,602 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 19:17:23,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 80 transitions, 170 flow [2023-08-03 19:17:23,686 INFO L124 PetriNetUnfolderBase]: 16/165 cut-off events. [2023-08-03 19:17:23,686 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:17:23,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 165 events. 16/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 483 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 92. Up to 8 conditions per place. [2023-08-03 19:17:23,694 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 80 transitions, 170 flow [2023-08-03 19:17:23,698 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 80 transitions, 170 flow [2023-08-03 19:17:23,703 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:17:23,711 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 80 transitions, 170 flow [2023-08-03 19:17:23,713 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 80 transitions, 170 flow [2023-08-03 19:17:23,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 80 transitions, 170 flow [2023-08-03 19:17:23,761 INFO L124 PetriNetUnfolderBase]: 16/165 cut-off events. [2023-08-03 19:17:23,761 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:17:23,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 165 events. 16/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 483 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 92. Up to 8 conditions per place. [2023-08-03 19:17:23,769 INFO L119 LiptonReduction]: Number of co-enabled transitions 1694 [2023-08-03 19:17:25,617 INFO L134 LiptonReduction]: Checked pairs total: 1481 [2023-08-03 19:17:25,617 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-08-03 19:17:25,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:17:25,650 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;@62ff6eef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:17:25,650 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:17:25,658 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:17:25,658 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-08-03 19:17:25,658 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:17:25,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:25,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 19:17:25,660 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 19:17:25,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:25,665 INFO L85 PathProgramCache]: Analyzing trace with hash 9912496, now seen corresponding path program 1 times [2023-08-03 19:17:25,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:25,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559547617] [2023-08-03 19:17:25,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:25,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:25,875 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 19:17:25,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:25,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559547617] [2023-08-03 19:17:25,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559547617] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:17:25,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:17:25,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:17:25,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662147582] [2023-08-03 19:17:25,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:17:25,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:17:25,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:25,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:17:25,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:17:25,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 150 [2023-08-03 19:17:25,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 19:17:25,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:25,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 150 [2023-08-03 19:17:25,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:26,025 INFO L124 PetriNetUnfolderBase]: 124/210 cut-off events. [2023-08-03 19:17:26,026 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:17:26,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 210 events. 124/210 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 587 event pairs, 30 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 414. Up to 199 conditions per place. [2023-08-03 19:17:26,031 INFO L140 encePairwiseOnDemand]: 146/150 looper letters, 18 selfloop transitions, 2 changer transitions 1/23 dead transitions. [2023-08-03 19:17:26,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 23 transitions, 98 flow [2023-08-03 19:17:26,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:17:26,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:17:26,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-08-03 19:17:26,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044444444444445 [2023-08-03 19:17:26,050 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-08-03 19:17:26,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-08-03 19:17:26,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:26,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-08-03 19:17:26,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 19:17:26,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 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 19:17:26,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 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 19:17:26,067 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 50 flow. Second operand 3 states and 227 transitions. [2023-08-03 19:17:26,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 23 transitions, 98 flow [2023-08-03 19:17:26,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 23 transitions, 98 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:17:26,071 INFO L231 Difference]: Finished difference. Result has 25 places, 18 transitions, 54 flow [2023-08-03 19:17:26,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2023-08-03 19:17:26,078 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2023-08-03 19:17:26,079 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 54 flow [2023-08-03 19:17:26,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 19:17:26,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:26,080 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:17:26,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:17:26,080 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 19:17:26,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:26,081 INFO L85 PathProgramCache]: Analyzing trace with hash 958838678, now seen corresponding path program 1 times [2023-08-03 19:17:26,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:26,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161302353] [2023-08-03 19:17:26,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:26,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:17:26,125 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:17:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:17:26,180 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:17:26,180 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:17:26,181 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 19:17:26,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 19:17:26,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 19:17:26,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:17:26,183 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 19:17:26,186 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:17:26,186 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:17:26,217 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 19:17:26,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 104 transitions, 232 flow [2023-08-03 19:17:26,283 INFO L124 PetriNetUnfolderBase]: 37/358 cut-off events. [2023-08-03 19:17:26,284 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 19:17:26,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 358 events. 37/358 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1423 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 257. Up to 18 conditions per place. [2023-08-03 19:17:26,289 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 104 transitions, 232 flow [2023-08-03 19:17:26,291 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 104 transitions, 232 flow [2023-08-03 19:17:26,291 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:17:26,291 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 104 transitions, 232 flow [2023-08-03 19:17:26,291 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 104 transitions, 232 flow [2023-08-03 19:17:26,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 104 transitions, 232 flow [2023-08-03 19:17:26,322 INFO L124 PetriNetUnfolderBase]: 37/358 cut-off events. [2023-08-03 19:17:26,323 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 19:17:26,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 358 events. 37/358 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1423 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 257. Up to 18 conditions per place. [2023-08-03 19:17:26,330 INFO L119 LiptonReduction]: Number of co-enabled transitions 4444 [2023-08-03 19:17:28,044 INFO L134 LiptonReduction]: Checked pairs total: 4064 [2023-08-03 19:17:28,045 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-03 19:17:28,046 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:17:28,047 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;@62ff6eef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:17:28,048 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:17:28,049 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:17:28,049 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-08-03 19:17:28,049 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:17:28,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:28,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 19:17:28,050 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 19:17:28,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:28,050 INFO L85 PathProgramCache]: Analyzing trace with hash 16496236, now seen corresponding path program 1 times [2023-08-03 19:17:28,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:28,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445689801] [2023-08-03 19:17:28,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:28,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:28,098 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 19:17:28,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:28,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445689801] [2023-08-03 19:17:28,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445689801] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:17:28,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:17:28,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:17:28,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860956983] [2023-08-03 19:17:28,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:17:28,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:17:28,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:28,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:17:28,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:17:28,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 190 [2023-08-03 19:17:28,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 19:17:28,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:28,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 190 [2023-08-03 19:17:28,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:28,445 INFO L124 PetriNetUnfolderBase]: 3088/4138 cut-off events. [2023-08-03 19:17:28,445 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2023-08-03 19:17:28,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8415 conditions, 4138 events. 3088/4138 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 15433 event pairs, 1386 based on Foata normal form. 0/2737 useless extension candidates. Maximal degree in co-relation 2694. Up to 4045 conditions per place. [2023-08-03 19:17:28,464 INFO L140 encePairwiseOnDemand]: 186/190 looper letters, 27 selfloop transitions, 2 changer transitions 1/34 dead transitions. [2023-08-03 19:17:28,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 152 flow [2023-08-03 19:17:28,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:17:28,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:17:28,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-08-03 19:17:28,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519298245614035 [2023-08-03 19:17:28,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-08-03 19:17:28,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-08-03 19:17:28,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:28,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-08-03 19:17:28,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 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 19:17:28,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 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 19:17:28,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 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 19:17:28,474 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 84 flow. Second operand 3 states and 296 transitions. [2023-08-03 19:17:28,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 152 flow [2023-08-03 19:17:28,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 148 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 19:17:28,477 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 88 flow [2023-08-03 19:17:28,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, 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=88, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-08-03 19:17:28,478 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-03 19:17:28,478 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 88 flow [2023-08-03 19:17:28,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 19:17:28,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:28,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:17:28,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 19:17:28,479 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 19:17:28,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:28,479 INFO L85 PathProgramCache]: Analyzing trace with hash -305782320, now seen corresponding path program 1 times [2023-08-03 19:17:28,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:28,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101218807] [2023-08-03 19:17:28,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:28,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:28,578 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 19:17:28,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:28,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101218807] [2023-08-03 19:17:28,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101218807] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:17:28,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113448404] [2023-08-03 19:17:28,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:28,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:17:28,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:17:28,585 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 19:17:28,599 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 19:17:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:28,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:17:28,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:17:28,678 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 19:17:28,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:17:28,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113448404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:17:28,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:17:28,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:17:28,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286222107] [2023-08-03 19:17:28,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:17:28,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:17:28,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:28,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:17:28,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:17:28,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 190 [2023-08-03 19:17:28,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 19:17:28,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:28,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 190 [2023-08-03 19:17:28,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:28,931 INFO L124 PetriNetUnfolderBase]: 2521/3394 cut-off events. [2023-08-03 19:17:28,932 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-03 19:17:28,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6915 conditions, 3394 events. 2521/3394 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 12202 event pairs, 1120 based on Foata normal form. 0/2362 useless extension candidates. Maximal degree in co-relation 6879. Up to 3127 conditions per place. [2023-08-03 19:17:28,951 INFO L140 encePairwiseOnDemand]: 187/190 looper letters, 34 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-03 19:17:28,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 182 flow [2023-08-03 19:17:28,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:17:28,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:17:28,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2023-08-03 19:17:28,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2023-08-03 19:17:28,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2023-08-03 19:17:28,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2023-08-03 19:17:28,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:28,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2023-08-03 19:17:28,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 19:17:28,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 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 19:17:28,956 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 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 19:17:28,956 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 88 flow. Second operand 3 states and 300 transitions. [2023-08-03 19:17:28,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 182 flow [2023-08-03 19:17:28,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:17:28,960 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 98 flow [2023-08-03 19:17:28,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, 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=38, PETRI_TRANSITIONS=30} [2023-08-03 19:17:28,962 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-08-03 19:17:28,962 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 98 flow [2023-08-03 19:17:28,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 19:17:28,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:28,963 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:17:28,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 19:17:29,171 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 19:17:29,171 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:17:29,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:29,172 INFO L85 PathProgramCache]: Analyzing trace with hash 874904513, now seen corresponding path program 1 times [2023-08-03 19:17:29,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:29,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850802749] [2023-08-03 19:17:29,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:29,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:29,236 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 19:17:29,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:29,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850802749] [2023-08-03 19:17:29,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850802749] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:17:29,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223976932] [2023-08-03 19:17:29,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:29,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:17:29,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:17:29,246 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 19:17:29,272 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 19:17:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:29,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:17:29,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:17:29,357 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 19:17:29,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:17:29,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223976932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:17:29,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:17:29,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:17:29,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612446199] [2023-08-03 19:17:29,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:17:29,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:17:29,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:29,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:17:29,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:17:29,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 190 [2023-08-03 19:17:29,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 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 19:17:29,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:29,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 190 [2023-08-03 19:17:29,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:29,656 INFO L124 PetriNetUnfolderBase]: 2503/3364 cut-off events. [2023-08-03 19:17:29,656 INFO L125 PetriNetUnfolderBase]: For 351/351 co-relation queries the response was YES. [2023-08-03 19:17:29,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7189 conditions, 3364 events. 2503/3364 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 12136 event pairs, 744 based on Foata normal form. 9/2491 useless extension candidates. Maximal degree in co-relation 2266. Up to 3237 conditions per place. [2023-08-03 19:17:29,675 INFO L140 encePairwiseOnDemand]: 186/190 looper letters, 33 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-08-03 19:17:29,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 40 transitions, 195 flow [2023-08-03 19:17:29,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:17:29,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:17:29,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 472 transitions. [2023-08-03 19:17:29,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968421052631579 [2023-08-03 19:17:29,677 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 472 transitions. [2023-08-03 19:17:29,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 472 transitions. [2023-08-03 19:17:29,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:29,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 472 transitions. [2023-08-03 19:17:29,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 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 19:17:29,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 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 19:17:29,681 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 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 19:17:29,681 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 98 flow. Second operand 5 states and 472 transitions. [2023-08-03 19:17:29,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 40 transitions, 195 flow [2023-08-03 19:17:29,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 40 transitions, 191 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 19:17:29,683 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 114 flow [2023-08-03 19:17:29,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=35, 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=41, PETRI_TRANSITIONS=30} [2023-08-03 19:17:29,684 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-03 19:17:29,684 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 114 flow [2023-08-03 19:17:29,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 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 19:17:29,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:29,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:17:29,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 19:17:29,890 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 19:17:29,891 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 19:17:29,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:29,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1886690364, now seen corresponding path program 1 times [2023-08-03 19:17:29,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:29,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192807006] [2023-08-03 19:17:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:29,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:29,968 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 19:17:29,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:29,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192807006] [2023-08-03 19:17:29,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192807006] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:17:29,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520856372] [2023-08-03 19:17:29,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:29,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:17:29,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:17:29,973 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 19:17:29,978 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 19:17:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:30,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:17:30,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:17:30,056 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 19:17:30,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:17:30,071 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 19:17:30,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520856372] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:17:30,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:17:30,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:17:30,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97530887] [2023-08-03 19:17:30,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:17:30,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:17:30,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:30,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:17:30,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:17:30,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 190 [2023-08-03 19:17:30,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 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 19:17:30,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:30,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 190 [2023-08-03 19:17:30,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:30,285 INFO L124 PetriNetUnfolderBase]: 2026/2680 cut-off events. [2023-08-03 19:17:30,285 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2023-08-03 19:17:30,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5722 conditions, 2680 events. 2026/2680 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 8942 event pairs, 558 based on Foata normal form. 3/1971 useless extension candidates. Maximal degree in co-relation 2266. Up to 2575 conditions per place. [2023-08-03 19:17:30,298 INFO L140 encePairwiseOnDemand]: 187/190 looper letters, 33 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-08-03 19:17:30,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 198 flow [2023-08-03 19:17:30,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:17:30,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:17:30,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 384 transitions. [2023-08-03 19:17:30,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2023-08-03 19:17:30,300 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 384 transitions. [2023-08-03 19:17:30,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 384 transitions. [2023-08-03 19:17:30,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:30,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 384 transitions. [2023-08-03 19:17:30,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 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 19:17:30,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 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 19:17:30,303 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 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 19:17:30,303 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 114 flow. Second operand 4 states and 384 transitions. [2023-08-03 19:17:30,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 198 flow [2023-08-03 19:17:30,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 193 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 19:17:30,305 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 105 flow [2023-08-03 19:17:30,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=99, 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=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2023-08-03 19:17:30,306 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-03 19:17:30,306 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 105 flow [2023-08-03 19:17:30,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 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 19:17:30,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:30,307 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:17:30,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 19:17:30,512 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 19:17:30,512 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 19:17:30,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:30,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1950376889, now seen corresponding path program 1 times [2023-08-03 19:17:30,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:30,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542322301] [2023-08-03 19:17:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:30,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:30,559 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 19:17:30,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:30,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542322301] [2023-08-03 19:17:30,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542322301] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:17:30,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522493076] [2023-08-03 19:17:30,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:30,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:17:30,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:17:30,561 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 19:17:30,564 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 19:17:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:30,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:17:30,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:17:30,645 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 19:17:30,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:17:30,658 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 19:17:30,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522493076] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:17:30,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:17:30,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:17:30,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684241725] [2023-08-03 19:17:30,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:17:30,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:17:30,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:30,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:17:30,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:17:30,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 190 [2023-08-03 19:17:30,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 105 flow. Second operand has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 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 19:17:30,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:30,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 190 [2023-08-03 19:17:30,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:30,851 INFO L124 PetriNetUnfolderBase]: 1864/2464 cut-off events. [2023-08-03 19:17:30,851 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2023-08-03 19:17:30,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5266 conditions, 2464 events. 1864/2464 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7995 event pairs, 400 based on Foata normal form. 27/1833 useless extension candidates. Maximal degree in co-relation 2077. Up to 1282 conditions per place. [2023-08-03 19:17:30,864 INFO L140 encePairwiseOnDemand]: 186/190 looper letters, 45 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2023-08-03 19:17:30,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 249 flow [2023-08-03 19:17:30,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:17:30,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:17:30,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2023-08-03 19:17:30,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5223684210526316 [2023-08-03 19:17:30,866 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 397 transitions. [2023-08-03 19:17:30,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 397 transitions. [2023-08-03 19:17:30,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:30,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 397 transitions. [2023-08-03 19:17:30,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 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 19:17:30,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 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 19:17:30,869 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 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 19:17:30,869 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 105 flow. Second operand 4 states and 397 transitions. [2023-08-03 19:17:30,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 249 flow [2023-08-03 19:17:30,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 243 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:17:30,872 INFO L231 Difference]: Finished difference. Result has 44 places, 30 transitions, 119 flow [2023-08-03 19:17:30,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=99, 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=4, PETRI_FLOW=119, PETRI_PLACES=44, PETRI_TRANSITIONS=30} [2023-08-03 19:17:30,873 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2023-08-03 19:17:30,873 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 30 transitions, 119 flow [2023-08-03 19:17:30,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 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 19:17:30,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:30,875 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:17:30,883 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 19:17:31,083 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 19:17:31,084 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:17:31,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:31,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1188226024, now seen corresponding path program 1 times [2023-08-03 19:17:31,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:31,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118111049] [2023-08-03 19:17:31,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:31,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:31,160 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 19:17:31,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:31,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118111049] [2023-08-03 19:17:31,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118111049] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:17:31,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633059474] [2023-08-03 19:17:31,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:31,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:17:31,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:17:31,162 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 19:17:31,173 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 19:17:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:31,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:17:31,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:17:31,274 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 19:17:31,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:17:31,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633059474] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:17:31,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:17:31,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:17:31,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681891545] [2023-08-03 19:17:31,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:17:31,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:17:31,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:31,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:17:31,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:17:31,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 190 [2023-08-03 19:17:31,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 30 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 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 19:17:31,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:31,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 190 [2023-08-03 19:17:31,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:31,479 INFO L124 PetriNetUnfolderBase]: 1540/2032 cut-off events. [2023-08-03 19:17:31,479 INFO L125 PetriNetUnfolderBase]: For 784/784 co-relation queries the response was YES. [2023-08-03 19:17:31,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4714 conditions, 2032 events. 1540/2032 cut-off events. For 784/784 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6145 event pairs, 22 based on Foata normal form. 81/1563 useless extension candidates. Maximal degree in co-relation 1840. Up to 1215 conditions per place. [2023-08-03 19:17:31,486 INFO L140 encePairwiseOnDemand]: 187/190 looper letters, 51 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2023-08-03 19:17:31,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 275 flow [2023-08-03 19:17:31,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:17:31,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:17:31,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 489 transitions. [2023-08-03 19:17:31,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147368421052632 [2023-08-03 19:17:31,488 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 489 transitions. [2023-08-03 19:17:31,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 489 transitions. [2023-08-03 19:17:31,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:31,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 489 transitions. [2023-08-03 19:17:31,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 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 19:17:31,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 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 19:17:31,491 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 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 19:17:31,491 INFO L175 Difference]: Start difference. First operand has 44 places, 30 transitions, 119 flow. Second operand 5 states and 489 transitions. [2023-08-03 19:17:31,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 275 flow [2023-08-03 19:17:31,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 268 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 19:17:31,494 INFO L231 Difference]: Finished difference. Result has 44 places, 28 transitions, 108 flow [2023-08-03 19:17:31,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=44, PETRI_TRANSITIONS=28} [2023-08-03 19:17:31,494 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2023-08-03 19:17:31,494 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 28 transitions, 108 flow [2023-08-03 19:17:31,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 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 19:17:31,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:31,495 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:17:31,503 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 19:17:31,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:17:31,700 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:17:31,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:31,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1188225596, now seen corresponding path program 1 times [2023-08-03 19:17:31,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:31,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836711539] [2023-08-03 19:17:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:31,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:31,862 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 19:17:31,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:31,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836711539] [2023-08-03 19:17:31,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836711539] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:17:31,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:17:31,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:17:31,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128848043] [2023-08-03 19:17:31,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:17:31,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:17:31,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:31,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:17:31,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:17:31,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 190 [2023-08-03 19:17:31,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 28 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 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 19:17:31,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:31,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 190 [2023-08-03 19:17:31,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:32,114 INFO L124 PetriNetUnfolderBase]: 2458/3211 cut-off events. [2023-08-03 19:17:32,114 INFO L125 PetriNetUnfolderBase]: For 1747/1747 co-relation queries the response was YES. [2023-08-03 19:17:32,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7431 conditions, 3211 events. 2458/3211 cut-off events. For 1747/1747 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11140 event pairs, 640 based on Foata normal form. 81/2379 useless extension candidates. Maximal degree in co-relation 2920. Up to 1774 conditions per place. [2023-08-03 19:17:32,130 INFO L140 encePairwiseOnDemand]: 185/190 looper letters, 49 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-08-03 19:17:32,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 297 flow [2023-08-03 19:17:32,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:17:32,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:17:32,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 389 transitions. [2023-08-03 19:17:32,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5118421052631579 [2023-08-03 19:17:32,132 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 389 transitions. [2023-08-03 19:17:32,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 389 transitions. [2023-08-03 19:17:32,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:32,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 389 transitions. [2023-08-03 19:17:32,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 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 19:17:32,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 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 19:17:32,135 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 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 19:17:32,135 INFO L175 Difference]: Start difference. First operand has 44 places, 28 transitions, 108 flow. Second operand 4 states and 389 transitions. [2023-08-03 19:17:32,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 297 flow [2023-08-03 19:17:32,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 57 transitions, 289 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:17:32,137 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 144 flow [2023-08-03 19:17:32,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2023-08-03 19:17:32,138 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-08-03 19:17:32,138 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 144 flow [2023-08-03 19:17:32,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 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 19:17:32,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:32,139 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:17:32,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 19:17:32,139 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 19:17:32,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:32,139 INFO L85 PathProgramCache]: Analyzing trace with hash -489153497, now seen corresponding path program 1 times [2023-08-03 19:17:32,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:32,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923413640] [2023-08-03 19:17:32,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:32,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:32,235 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 19:17:32,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:32,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923413640] [2023-08-03 19:17:32,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923413640] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:17:32,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715652273] [2023-08-03 19:17:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:32,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:17:32,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:17:32,238 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 19:17:32,252 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 19:17:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:32,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-03 19:17:32,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:17:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 19:17:32,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:17:32,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715652273] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:17:32,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:17:32,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:17:32,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587305741] [2023-08-03 19:17:32,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:17:32,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:17:32,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:32,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:17:32,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-03 19:17:32,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2023-08-03 19:17:32,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 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 19:17:32,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:32,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2023-08-03 19:17:32,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:32,886 INFO L124 PetriNetUnfolderBase]: 5048/6567 cut-off events. [2023-08-03 19:17:32,886 INFO L125 PetriNetUnfolderBase]: For 3918/3918 co-relation queries the response was YES. [2023-08-03 19:17:32,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16813 conditions, 6567 events. 5048/6567 cut-off events. For 3918/3918 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 26265 event pairs, 957 based on Foata normal form. 136/5655 useless extension candidates. Maximal degree in co-relation 11987. Up to 3332 conditions per place. [2023-08-03 19:17:32,922 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 84 selfloop transitions, 14 changer transitions 0/100 dead transitions. [2023-08-03 19:17:32,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 100 transitions, 566 flow [2023-08-03 19:17:32,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 19:17:32,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 19:17:32,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 586 transitions. [2023-08-03 19:17:32,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5140350877192983 [2023-08-03 19:17:32,925 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 586 transitions. [2023-08-03 19:17:32,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 586 transitions. [2023-08-03 19:17:32,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:32,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 586 transitions. [2023-08-03 19:17:32,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.66666666666667) internal successors, (586), 6 states have internal predecessors, (586), 0 states have call successors, (0), 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 19:17:32,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 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 19:17:32,928 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 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 19:17:32,929 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 144 flow. Second operand 6 states and 586 transitions. [2023-08-03 19:17:32,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 100 transitions, 566 flow [2023-08-03 19:17:32,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 100 transitions, 566 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:17:32,936 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 271 flow [2023-08-03 19:17:32,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2023-08-03 19:17:32,937 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2023-08-03 19:17:32,937 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 271 flow [2023-08-03 19:17:32,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 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 19:17:32,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:32,937 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:17:32,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 19:17:33,143 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 19:17:33,143 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 19:17:33,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:33,143 INFO L85 PathProgramCache]: Analyzing trace with hash -489179537, now seen corresponding path program 2 times [2023-08-03 19:17:33,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:33,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825697865] [2023-08-03 19:17:33,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:33,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:33,258 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 19:17:33,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:33,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825697865] [2023-08-03 19:17:33,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825697865] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:17:33,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:17:33,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:17:33,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532626697] [2023-08-03 19:17:33,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:17:33,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:17:33,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:33,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:17:33,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:17:33,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2023-08-03 19:17:33,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 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 19:17:33,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:33,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2023-08-03 19:17:33,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:33,890 INFO L124 PetriNetUnfolderBase]: 5360/7025 cut-off events. [2023-08-03 19:17:33,890 INFO L125 PetriNetUnfolderBase]: For 7626/7626 co-relation queries the response was YES. [2023-08-03 19:17:33,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21029 conditions, 7025 events. 5360/7025 cut-off events. For 7626/7626 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 28545 event pairs, 1219 based on Foata normal form. 136/7151 useless extension candidates. Maximal degree in co-relation 16564. Up to 3588 conditions per place. [2023-08-03 19:17:33,927 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 86 selfloop transitions, 23 changer transitions 0/111 dead transitions. [2023-08-03 19:17:33,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 111 transitions, 731 flow [2023-08-03 19:17:33,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 19:17:33,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 19:17:33,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 581 transitions. [2023-08-03 19:17:33,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096491228070176 [2023-08-03 19:17:33,929 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 581 transitions. [2023-08-03 19:17:33,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 581 transitions. [2023-08-03 19:17:33,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:33,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 581 transitions. [2023-08-03 19:17:33,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.83333333333333) internal successors, (581), 6 states have internal predecessors, (581), 0 states have call successors, (0), 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 19:17:33,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 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 19:17:33,933 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 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 19:17:33,933 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 271 flow. Second operand 6 states and 581 transitions. [2023-08-03 19:17:33,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 111 transitions, 731 flow [2023-08-03 19:17:33,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 111 transitions, 721 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-03 19:17:33,958 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 438 flow [2023-08-03 19:17:33,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2023-08-03 19:17:33,959 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 30 predicate places. [2023-08-03 19:17:33,959 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 438 flow [2023-08-03 19:17:33,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 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 19:17:33,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:33,960 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 19:17:33,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 19:17:33,960 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 19:17:33,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:33,960 INFO L85 PathProgramCache]: Analyzing trace with hash -79811097, now seen corresponding path program 1 times [2023-08-03 19:17:33,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:33,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907952343] [2023-08-03 19:17:33,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:33,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:34,088 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 19:17:34,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:34,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907952343] [2023-08-03 19:17:34,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907952343] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:17:34,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494757777] [2023-08-03 19:17:34,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:34,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:17:34,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:17:34,091 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 19:17:34,093 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 19:17:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:34,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:17:34,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:17:34,204 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 19:17:34,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:17:34,309 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 19:17:34,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494757777] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:17:34,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:17:34,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-03 19:17:34,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492822532] [2023-08-03 19:17:34,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:17:34,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 19:17:34,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:34,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 19:17:34,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-03 19:17:34,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2023-08-03 19:17:34,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 438 flow. Second operand has 11 states, 11 states have (on average 86.0909090909091) internal successors, (947), 11 states have internal predecessors, (947), 0 states have call successors, (0), 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 19:17:34,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:34,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2023-08-03 19:17:34,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:35,399 INFO L124 PetriNetUnfolderBase]: 8096/10527 cut-off events. [2023-08-03 19:17:35,399 INFO L125 PetriNetUnfolderBase]: For 21086/21086 co-relation queries the response was YES. [2023-08-03 19:17:35,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35043 conditions, 10527 events. 8096/10527 cut-off events. For 21086/21086 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 45276 event pairs, 616 based on Foata normal form. 256/10773 useless extension candidates. Maximal degree in co-relation 29821. Up to 1627 conditions per place. [2023-08-03 19:17:35,475 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 161 selfloop transitions, 47 changer transitions 0/210 dead transitions. [2023-08-03 19:17:35,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 210 transitions, 1418 flow [2023-08-03 19:17:35,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-03 19:17:35,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-03 19:17:35,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1264 transitions. [2023-08-03 19:17:35,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117408906882591 [2023-08-03 19:17:35,480 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1264 transitions. [2023-08-03 19:17:35,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1264 transitions. [2023-08-03 19:17:35,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:35,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1264 transitions. [2023-08-03 19:17:35,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 97.23076923076923) internal successors, (1264), 13 states have internal predecessors, (1264), 0 states have call successors, (0), 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 19:17:35,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 190.0) internal successors, (2660), 14 states have internal predecessors, (2660), 0 states have call successors, (0), 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 19:17:35,487 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 190.0) internal successors, (2660), 14 states have internal predecessors, (2660), 0 states have call successors, (0), 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 19:17:35,488 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 438 flow. Second operand 13 states and 1264 transitions. [2023-08-03 19:17:35,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 210 transitions, 1418 flow [2023-08-03 19:17:35,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 210 transitions, 1397 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-03 19:17:35,544 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 739 flow [2023-08-03 19:17:35,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=739, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2023-08-03 19:17:35,545 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 48 predicate places. [2023-08-03 19:17:35,545 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 739 flow [2023-08-03 19:17:35,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 86.0909090909091) internal successors, (947), 11 states have internal predecessors, (947), 0 states have call successors, (0), 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 19:17:35,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:35,546 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:17:35,554 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 19:17:35,751 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 19:17:35,752 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 19:17:35,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:35,752 INFO L85 PathProgramCache]: Analyzing trace with hash 556400461, now seen corresponding path program 2 times [2023-08-03 19:17:35,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:35,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903150875] [2023-08-03 19:17:35,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:35,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:35,907 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 19:17:35,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:35,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903150875] [2023-08-03 19:17:35,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903150875] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:17:35,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689765919] [2023-08-03 19:17:35,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:17:35,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:17:35,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:17:35,909 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 19:17:35,925 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 19:17:35,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:17:35,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:17:35,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-03 19:17:35,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:17:36,051 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 19:17:36,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:17:36,161 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 19:17:36,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689765919] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:17:36,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:17:36,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-03 19:17:36,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324865946] [2023-08-03 19:17:36,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:17:36,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-03 19:17:36,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:36,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-03 19:17:36,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-03 19:17:36,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2023-08-03 19:17:36,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 739 flow. Second operand has 15 states, 15 states have (on average 85.53333333333333) internal successors, (1283), 15 states have internal predecessors, (1283), 0 states have call successors, (0), 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 19:17:36,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:36,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2023-08-03 19:17:36,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:38,014 INFO L124 PetriNetUnfolderBase]: 14224/18399 cut-off events. [2023-08-03 19:17:38,015 INFO L125 PetriNetUnfolderBase]: For 94681/94681 co-relation queries the response was YES. [2023-08-03 19:17:38,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77608 conditions, 18399 events. 14224/18399 cut-off events. For 94681/94681 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 84679 event pairs, 643 based on Foata normal form. 320/18709 useless extension candidates. Maximal degree in co-relation 71247. Up to 2935 conditions per place. [2023-08-03 19:17:38,158 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 247 selfloop transitions, 84 changer transitions 0/333 dead transitions. [2023-08-03 19:17:38,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 333 transitions, 2859 flow [2023-08-03 19:17:38,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-03 19:17:38,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-03 19:17:38,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1946 transitions. [2023-08-03 19:17:38,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121052631578947 [2023-08-03 19:17:38,166 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1946 transitions. [2023-08-03 19:17:38,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1946 transitions. [2023-08-03 19:17:38,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:38,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1946 transitions. [2023-08-03 19:17:38,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 97.3) internal successors, (1946), 20 states have internal predecessors, (1946), 0 states have call successors, (0), 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 19:17:38,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 190.0) internal successors, (3990), 21 states have internal predecessors, (3990), 0 states have call successors, (0), 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 19:17:38,178 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 190.0) internal successors, (3990), 21 states have internal predecessors, (3990), 0 states have call successors, (0), 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 19:17:38,178 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 739 flow. Second operand 20 states and 1946 transitions. [2023-08-03 19:17:38,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 333 transitions, 2859 flow [2023-08-03 19:17:38,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 333 transitions, 2649 flow, removed 76 selfloop flow, removed 8 redundant places. [2023-08-03 19:17:38,934 INFO L231 Difference]: Finished difference. Result has 103 places, 115 transitions, 1337 flow [2023-08-03 19:17:38,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1337, PETRI_PLACES=103, PETRI_TRANSITIONS=115} [2023-08-03 19:17:38,935 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 69 predicate places. [2023-08-03 19:17:38,935 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 115 transitions, 1337 flow [2023-08-03 19:17:38,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 85.53333333333333) internal successors, (1283), 15 states have internal predecessors, (1283), 0 states have call successors, (0), 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 19:17:38,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:38,936 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:17:38,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 19:17:39,144 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 19:17:39,145 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 19:17:39,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:39,145 INFO L85 PathProgramCache]: Analyzing trace with hash -403122141, now seen corresponding path program 3 times [2023-08-03 19:17:39,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:39,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588258083] [2023-08-03 19:17:39,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:39,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 19:17:39,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:39,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588258083] [2023-08-03 19:17:39,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588258083] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:17:39,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854798044] [2023-08-03 19:17:39,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-03 19:17:39,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:17:39,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:17:39,319 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:17:39,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 19:17:39,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-03 19:17:39,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:17:39,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-03 19:17:39,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:17:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 19:17:39,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:17:39,559 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 19:17:39,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854798044] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:17:39,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:17:39,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2023-08-03 19:17:39,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279176887] [2023-08-03 19:17:39,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:17:39,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-03 19:17:39,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:39,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-03 19:17:39,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-08-03 19:17:39,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2023-08-03 19:17:39,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 115 transitions, 1337 flow. Second operand has 16 states, 16 states have (on average 85.5) internal successors, (1368), 16 states have internal predecessors, (1368), 0 states have call successors, (0), 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 19:17:39,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:39,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2023-08-03 19:17:39,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:42,403 INFO L124 PetriNetUnfolderBase]: 19504/25183 cut-off events. [2023-08-03 19:17:42,404 INFO L125 PetriNetUnfolderBase]: For 293319/293319 co-relation queries the response was YES. [2023-08-03 19:17:42,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132265 conditions, 25183 events. 19504/25183 cut-off events. For 293319/293319 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 118082 event pairs, 616 based on Foata normal form. 384/25557 useless extension candidates. Maximal degree in co-relation 123401. Up to 3703 conditions per place. [2023-08-03 19:17:42,706 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 305 selfloop transitions, 116 changer transitions 0/423 dead transitions. [2023-08-03 19:17:42,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 423 transitions, 4483 flow [2023-08-03 19:17:42,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-03 19:17:42,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-03 19:17:42,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2430 transitions. [2023-08-03 19:17:42,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.511578947368421 [2023-08-03 19:17:42,718 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2430 transitions. [2023-08-03 19:17:42,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2430 transitions. [2023-08-03 19:17:42,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:42,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2430 transitions. [2023-08-03 19:17:42,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 97.2) internal successors, (2430), 25 states have internal predecessors, (2430), 0 states have call successors, (0), 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 19:17:42,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 190.0) internal successors, (4940), 26 states have internal predecessors, (4940), 0 states have call successors, (0), 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 19:17:42,734 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 190.0) internal successors, (4940), 26 states have internal predecessors, (4940), 0 states have call successors, (0), 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 19:17:42,734 INFO L175 Difference]: Start difference. First operand has 103 places, 115 transitions, 1337 flow. Second operand 25 states and 2430 transitions. [2023-08-03 19:17:42,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 423 transitions, 4483 flow [2023-08-03 19:17:45,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 423 transitions, 4021 flow, removed 213 selfloop flow, removed 5 redundant places. [2023-08-03 19:17:45,315 INFO L231 Difference]: Finished difference. Result has 133 places, 147 transitions, 2005 flow [2023-08-03 19:17:45,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=1059, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2005, PETRI_PLACES=133, PETRI_TRANSITIONS=147} [2023-08-03 19:17:45,316 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 99 predicate places. [2023-08-03 19:17:45,316 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 147 transitions, 2005 flow [2023-08-03 19:17:45,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 85.5) internal successors, (1368), 16 states have internal predecessors, (1368), 0 states have call successors, (0), 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 19:17:45,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:45,316 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:17:45,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-03 19:17:45,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 19:17:45,521 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:17:45,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:45,522 INFO L85 PathProgramCache]: Analyzing trace with hash 934532147, now seen corresponding path program 4 times [2023-08-03 19:17:45,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:45,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659959538] [2023-08-03 19:17:45,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:45,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 19:17:45,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:45,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659959538] [2023-08-03 19:17:45,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659959538] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:17:45,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659145974] [2023-08-03 19:17:45,765 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-03 19:17:45,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:17:45,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:17:45,767 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:17:45,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 19:17:45,854 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-03 19:17:45,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:17:45,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-03 19:17:45,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:17:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 19:17:45,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:17:46,088 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 19:17:46,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659145974] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:17:46,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:17:46,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-03 19:17:46,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264126356] [2023-08-03 19:17:46,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:17:46,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-03 19:17:46,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:46,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-03 19:17:46,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2023-08-03 19:17:46,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2023-08-03 19:17:46,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 147 transitions, 2005 flow. Second operand has 26 states, 26 states have (on average 84.88461538461539) internal successors, (2207), 26 states have internal predecessors, (2207), 0 states have call successors, (0), 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 19:17:46,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:46,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2023-08-03 19:17:46,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:17:49,961 INFO L124 PetriNetUnfolderBase]: 23088/29791 cut-off events. [2023-08-03 19:17:49,961 INFO L125 PetriNetUnfolderBase]: For 593327/593327 co-relation queries the response was YES. [2023-08-03 19:17:50,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183648 conditions, 29791 events. 23088/29791 cut-off events. For 593327/593327 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 141109 event pairs, 811 based on Foata normal form. 192/29973 useless extension candidates. Maximal degree in co-relation 180274. Up to 4195 conditions per place. [2023-08-03 19:17:50,392 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 350 selfloop transitions, 131 changer transitions 0/483 dead transitions. [2023-08-03 19:17:50,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 483 transitions, 5879 flow [2023-08-03 19:17:50,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-03 19:17:50,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-03 19:17:50,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2720 transitions. [2023-08-03 19:17:50,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5112781954887218 [2023-08-03 19:17:50,405 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2720 transitions. [2023-08-03 19:17:50,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2720 transitions. [2023-08-03 19:17:50,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:17:50,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2720 transitions. [2023-08-03 19:17:50,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 97.14285714285714) internal successors, (2720), 28 states have internal predecessors, (2720), 0 states have call successors, (0), 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 19:17:50,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 190.0) internal successors, (5510), 29 states have internal predecessors, (5510), 0 states have call successors, (0), 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 19:17:50,419 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 190.0) internal successors, (5510), 29 states have internal predecessors, (5510), 0 states have call successors, (0), 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 19:17:50,419 INFO L175 Difference]: Start difference. First operand has 133 places, 147 transitions, 2005 flow. Second operand 28 states and 2720 transitions. [2023-08-03 19:17:50,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 483 transitions, 5879 flow [2023-08-03 19:17:54,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 483 transitions, 5193 flow, removed 288 selfloop flow, removed 11 redundant places. [2023-08-03 19:17:54,737 INFO L231 Difference]: Finished difference. Result has 157 places, 169 transitions, 2303 flow [2023-08-03 19:17:54,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=1443, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2303, PETRI_PLACES=157, PETRI_TRANSITIONS=169} [2023-08-03 19:17:54,737 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 123 predicate places. [2023-08-03 19:17:54,738 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 169 transitions, 2303 flow [2023-08-03 19:17:54,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 84.88461538461539) internal successors, (2207), 26 states have internal predecessors, (2207), 0 states have call successors, (0), 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 19:17:54,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:17:54,739 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:17:54,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 19:17:54,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 19:17:54,944 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:17:54,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:17:54,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1931151278, now seen corresponding path program 5 times [2023-08-03 19:17:54,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:17:54,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615712276] [2023-08-03 19:17:54,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:17:54,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:17:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:17:55,033 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 19:17:55,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:17:55,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615712276] [2023-08-03 19:17:55,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615712276] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:17:55,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365618948] [2023-08-03 19:17:55,034 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-03 19:17:55,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:17:55,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:17:55,035 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:17:55,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 19:17:55,116 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-08-03 19:17:55,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:17:55,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-03 19:17:55,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:17:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 19:17:55,153 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:17:55,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365618948] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:17:55,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:17:55,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-08-03 19:17:55,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467652256] [2023-08-03 19:17:55,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:17:55,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 19:17:55,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:17:55,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 19:17:55,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-03 19:17:55,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 190 [2023-08-03 19:17:55,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 169 transitions, 2303 flow. Second operand has 8 states, 8 states have (on average 91.25) internal successors, (730), 8 states have internal predecessors, (730), 0 states have call successors, (0), 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 19:17:55,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:17:55,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 190 [2023-08-03 19:17:55,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:18:03,780 INFO L124 PetriNetUnfolderBase]: 59523/74832 cut-off events. [2023-08-03 19:18:03,780 INFO L125 PetriNetUnfolderBase]: For 2214640/2214640 co-relation queries the response was YES. [2023-08-03 19:18:04,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500206 conditions, 74832 events. 59523/74832 cut-off events. For 2214640/2214640 co-relation queries the response was YES. Maximal size of possible extension queue 1891. Compared 370038 event pairs, 6545 based on Foata normal form. 2129/76956 useless extension candidates. Maximal degree in co-relation 499743. Up to 28816 conditions per place. [2023-08-03 19:18:04,672 INFO L140 encePairwiseOnDemand]: 187/190 looper letters, 892 selfloop transitions, 122 changer transitions 0/1016 dead transitions. [2023-08-03 19:18:04,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 1016 transitions, 16281 flow [2023-08-03 19:18:04,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:18:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:18:04,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 852 transitions. [2023-08-03 19:18:04,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5605263157894737 [2023-08-03 19:18:04,679 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 852 transitions. [2023-08-03 19:18:04,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 852 transitions. [2023-08-03 19:18:04,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:18:04,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 852 transitions. [2023-08-03 19:18:04,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 106.5) internal successors, (852), 8 states have internal predecessors, (852), 0 states have call successors, (0), 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 19:18:04,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 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 19:18:04,690 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 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 19:18:04,691 INFO L175 Difference]: Start difference. First operand has 157 places, 169 transitions, 2303 flow. Second operand 8 states and 852 transitions. [2023-08-03 19:18:04,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 1016 transitions, 16281 flow [2023-08-03 19:18:43,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 1016 transitions, 12667 flow, removed 1294 selfloop flow, removed 19 redundant places. [2023-08-03 19:18:43,244 INFO L231 Difference]: Finished difference. Result has 145 places, 262 transitions, 2905 flow [2023-08-03 19:18:43,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=1737, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2905, PETRI_PLACES=145, PETRI_TRANSITIONS=262} [2023-08-03 19:18:43,244 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 111 predicate places. [2023-08-03 19:18:43,244 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 262 transitions, 2905 flow [2023-08-03 19:18:43,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 91.25) internal successors, (730), 8 states have internal predecessors, (730), 0 states have call successors, (0), 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 19:18:43,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:18:43,245 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:18:43,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 19:18:43,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-03 19:18:43,449 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:18:43,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:18:43,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1969986743, now seen corresponding path program 1 times [2023-08-03 19:18:43,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:18:43,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120147815] [2023-08-03 19:18:43,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:18:43,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:18:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:18:43,546 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:18:43,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:18:43,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120147815] [2023-08-03 19:18:43,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120147815] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:18:43,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011453634] [2023-08-03 19:18:43,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:18:43,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:18:43,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:18:43,549 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:18:43,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 19:18:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:18:43,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-03 19:18:43,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:18:43,670 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:18:43,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:18:43,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011453634] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:18:43,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:18:43,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-08-03 19:18:43,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636589640] [2023-08-03 19:18:43,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:18:43,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 19:18:43,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:18:43,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 19:18:43,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-03 19:18:43,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 190 [2023-08-03 19:18:43,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 262 transitions, 2905 flow. Second operand has 8 states, 8 states have (on average 91.125) internal successors, (729), 8 states have internal predecessors, (729), 0 states have call successors, (0), 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 19:18:43,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:18:43,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 190 [2023-08-03 19:18:43,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:19:06,135 INFO L124 PetriNetUnfolderBase]: 155725/191777 cut-off events. [2023-08-03 19:19:06,136 INFO L125 PetriNetUnfolderBase]: For 5414188/5414188 co-relation queries the response was YES. [2023-08-03 19:19:07,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1259749 conditions, 191777 events. 155725/191777 cut-off events. For 5414188/5414188 co-relation queries the response was YES. Maximal size of possible extension queue 4591. Compared 992858 event pairs, 5715 based on Foata normal form. 5720/197488 useless extension candidates. Maximal degree in co-relation 1234263. Up to 78882 conditions per place. [2023-08-03 19:19:08,266 INFO L140 encePairwiseOnDemand]: 187/190 looper letters, 1187 selfloop transitions, 121 changer transitions 117/1427 dead transitions. [2023-08-03 19:19:08,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 1427 transitions, 19023 flow [2023-08-03 19:19:08,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:19:08,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:19:08,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 838 transitions. [2023-08-03 19:19:08,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5513157894736842 [2023-08-03 19:19:08,268 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 838 transitions. [2023-08-03 19:19:08,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 838 transitions. [2023-08-03 19:19:08,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:19:08,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 838 transitions. [2023-08-03 19:19:08,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 104.75) internal successors, (838), 8 states have internal predecessors, (838), 0 states have call successors, (0), 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 19:19:08,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 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 19:19:08,271 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 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 19:19:08,271 INFO L175 Difference]: Start difference. First operand has 145 places, 262 transitions, 2905 flow. Second operand 8 states and 838 transitions. [2023-08-03 19:19:08,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 1427 transitions, 19023 flow [2023-08-03 19:21:36,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 1427 transitions, 17848 flow, removed 584 selfloop flow, removed 1 redundant places. [2023-08-03 19:21:36,387 INFO L231 Difference]: Finished difference. Result has 151 places, 353 transitions, 3832 flow [2023-08-03 19:21:36,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=2672, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3832, PETRI_PLACES=151, PETRI_TRANSITIONS=353} [2023-08-03 19:21:36,387 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 117 predicate places. [2023-08-03 19:21:36,387 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 353 transitions, 3832 flow [2023-08-03 19:21:36,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 91.125) internal successors, (729), 8 states have internal predecessors, (729), 0 states have call successors, (0), 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 19:21:36,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:21:36,388 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:21:36,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-03 19:21:36,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 19:21:36,588 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:21:36,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:21:36,589 INFO L85 PathProgramCache]: Analyzing trace with hash -121054771, now seen corresponding path program 1 times [2023-08-03 19:21:36,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:21:36,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350588831] [2023-08-03 19:21:36,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:21:36,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:21:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:21:36,604 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:21:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:21:36,623 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:21:36,624 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:21:36,624 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 19:21:36,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 19:21:36,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 19:21:36,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-03 19:21:36,624 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:21:36,628 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 19:21:36,628 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 19:21:36,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 07:21:36 BasicIcfg [2023-08-03 19:21:36,676 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 19:21:36,676 INFO L158 Benchmark]: Toolchain (without parser) took 253960.54ms. Allocated memory was 520.1MB in the beginning and 14.2GB in the end (delta: 13.7GB). Free memory was 472.1MB in the beginning and 9.8GB in the end (delta: -9.3GB). Peak memory consumption was 4.4GB. Max. memory is 16.0GB. [2023-08-03 19:21:36,676 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 358.6MB. Free memory was 307.1MB in the beginning and 307.0MB in the end (delta: 115.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:21:36,676 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.12ms. Allocated memory is still 520.1MB. Free memory was 471.7MB in the beginning and 452.4MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 19:21:36,677 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.68ms. Allocated memory is still 520.1MB. Free memory was 452.4MB in the beginning and 450.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:21:36,677 INFO L158 Benchmark]: Boogie Preprocessor took 23.23ms. Allocated memory is still 520.1MB. Free memory was 450.2MB in the beginning and 449.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:21:36,677 INFO L158 Benchmark]: RCFGBuilder took 306.52ms. Allocated memory is still 520.1MB. Free memory was 448.7MB in the beginning and 435.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 19:21:36,677 INFO L158 Benchmark]: TraceAbstraction took 253140.87ms. Allocated memory was 520.1MB in the beginning and 14.2GB in the end (delta: 13.7GB). Free memory was 434.8MB in the beginning and 9.8GB in the end (delta: -9.3GB). Peak memory consumption was 4.4GB. Max. memory is 16.0GB. [2023-08-03 19:21:36,679 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 358.6MB. Free memory was 307.1MB in the beginning and 307.0MB in the end (delta: 115.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 446.12ms. Allocated memory is still 520.1MB. Free memory was 471.7MB in the beginning and 452.4MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.68ms. Allocated memory is still 520.1MB. Free memory was 452.4MB in the beginning and 450.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.23ms. Allocated memory is still 520.1MB. Free memory was 450.2MB in the beginning and 449.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 306.52ms. Allocated memory is still 520.1MB. Free memory was 448.7MB in the beginning and 435.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 253140.87ms. Allocated memory was 520.1MB in the beginning and 14.2GB in the end (delta: 13.7GB). Free memory was 434.8MB in the beginning and 9.8GB in the end (delta: -9.3GB). Peak memory consumption was 4.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 78 PlacesBefore, 22 PlacesAfterwards, 80 TransitionsBefore, 20 TransitionsAfterwards, 1694 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 4 ChoiceCompositions, 70 TotalNumberOfCompositions, 1481 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1302, independent: 1275, independent conditional: 0, independent unconditional: 1275, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 895, independent: 881, independent conditional: 0, independent unconditional: 881, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1302, independent: 394, independent conditional: 0, independent unconditional: 394, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 895, unknown conditional: 0, unknown unconditional: 895] , Statistics on independence cache: Total cache size (in pairs): 22, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 102 PlacesBefore, 34 PlacesAfterwards, 104 TransitionsBefore, 30 TransitionsAfterwards, 4444 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 6 ChoiceCompositions, 86 TotalNumberOfCompositions, 4064 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3532, independent: 3496, independent conditional: 0, independent unconditional: 3496, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2267, independent: 2249, independent conditional: 0, independent unconditional: 2249, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3532, independent: 1247, independent conditional: 0, independent unconditional: 1247, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 2267, unknown conditional: 0, unknown unconditional: 2267] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1[2], id2[2]; [L713] 0 int asdf=0; VAL [\old(argc)=51, argc=51, argv={50:49}, argv={50:49}, asdf=0, i=3, id1={5:0}, id2={3:0}, j=6] [L713] COND TRUE 0 asdf<2 [L713] FCALL, FORK 0 pthread_create(&id1[asdf], ((void *)0), t1, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=0, i=3, id1={5:0}, id2={3:0}, j=6, pthread_create(&id1[asdf], ((void *)0), t1, ((void *)0))=9] [L713] 0 asdf++ VAL [\old(argc)=51, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=1, i=3, id1={5:0}, id2={3:0}, j=6] [L713] COND TRUE 0 asdf<2 [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L713] FCALL, FORK 0 pthread_create(&id1[asdf], ((void *)0), t1, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=1, i=7, id1={5:0}, id2={3:0}, j=6, k=1, pthread_create(&id1[asdf], ((void *)0), t1, ((void *)0))=10] [L713] 0 asdf++ VAL [\old(argc)=51, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=2, i=7, id1={5:0}, id2={3:0}, j=6, k=1] [L713] COND FALSE 0 !(asdf<2) [L714] 0 int asdf=0; VAL [\old(argc)=51, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=0, asdf=2, i=7, id1={5:0}, id2={3:0}, j=6, k=1] [L714] COND TRUE 0 asdf<2 [L714] FCALL, FORK 0 pthread_create(&id2[asdf], ((void *)0), t2, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=0, asdf=2, i=7, id1={5:0}, id2={3:0}, j=6, k=1, pthread_create(&id2[asdf], ((void *)0), t2, ((void *)0))=11] [L714] 0 asdf++ VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=1, asdf=2, i=7, id1={5:0}, id2={3:0}, j=6, k=1] [L714] COND TRUE 0 asdf<2 [L704] 3 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L704] COND TRUE 3 k < 5 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L714] FCALL, FORK 0 pthread_create(&id2[asdf], ((void *)0), t2, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=1, asdf=2, i=7, id1={5:0}, id2={3:0}, j=8, k=1, k=1, pthread_create(&id2[asdf], ((void *)0), t2, ((void *)0))=12] [L714] 0 asdf++ VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=2, asdf=2, i=7, id1={5:0}, id2={3:0}, j=8, k=1, k=1] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 3 k < 5 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 3 k < 5 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 3 k < 5 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 3 k < 5 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=0, k=5] [L696] COND TRUE 2 k < 5 [L698] 2 i = j + 1 [L696] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=1, k=5] [L714] COND FALSE 0 !(asdf<2) [L716] 0 int condI = i > (2*5 +6); VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=2, asdf=2, condI=1, i=17, id1={5:0}, id2={3:0}, j=16, k=1, k=5] [L719] 0 int condJ = j > (2*5 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=2, asdf=2, condI=1, condJ=0, i=17, id1={5:0}, id2={3:0}, j=16, k=1, k=5] - UnprovableResult [Line: 713]: 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: 714]: 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, 94 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: 2.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 40 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, 0.1s 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, 114 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: 250.4s, OverallIterations: 16, TraceHistogramMax: 6, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 242.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3050 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2949 mSDsluCounter, 280 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 274 mSDsCounter, 365 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3950 IncrementalHoareTripleChecker+Invalid, 4315 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 365 mSolverCounterUnsat, 6 mSDtfsCounter, 3950 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 535 GetRequests, 352 SyntacticMatches, 6 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1159 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3832occurred in iteration=15, InterpolantAutomatonStates: 142, 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, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 610 NumberOfCodeBlocks, 606 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 681 ConstructedInterpolants, 0 QuantifiedInterpolants, 2013 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1800 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 33 InterpolantComputations, 9 PerfectInterpolantSequences, 360/497 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 19:21:36,694 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...