/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe033_tso_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:52:51,158 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:52:51,220 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:52:51,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:52:51,224 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:52:51,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:52:51,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:52:51,244 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:52:51,245 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:52:51,248 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:52:51,248 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:52:51,249 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:52:51,249 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:52:51,250 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:52:51,250 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:52:51,250 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:52:51,250 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:52:51,250 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:52:51,251 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:52:51,251 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:52:51,251 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:52:51,251 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:52:51,251 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:52:51,252 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:52:51,252 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:52:51,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:52:51,253 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:52:51,253 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:52:51,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:52:51,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:52:51,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:52:51,254 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:52:51,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:52:51,255 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:52:51,255 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:52:51,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:52:51,255 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:52:51,255 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:52:51,255 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:52:51,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:52:51,256 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:52:51,256 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:52:51,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:52:51,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:52:51,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:52:51,457 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:52:51,457 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:52:51,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe033_tso_bound2.i [2023-08-03 18:52:52,305 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:52:52,543 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:52:52,543 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe033_tso_bound2.i [2023-08-03 18:52:52,555 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57efbcdd/511187abb36647aaa2f54bd0b1ae8730/FLAGa14a558f1 [2023-08-03 18:52:52,564 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57efbcdd/511187abb36647aaa2f54bd0b1ae8730 [2023-08-03 18:52:52,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:52:52,566 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:52:52,567 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:52:52,567 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:52:52,571 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:52:52,571 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:52:52" (1/1) ... [2023-08-03 18:52:52,572 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b51310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:52:52, skipping insertion in model container [2023-08-03 18:52:52,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:52:52" (1/1) ... [2023-08-03 18:52:52,604 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:52:52,703 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe033_tso_bound2.i[945,958] [2023-08-03 18:52:52,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:52:52,808 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:52:52,816 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe033_tso_bound2.i[945,958] [2023-08-03 18:52:52,822 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:52:52,823 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:52:52,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:52:52,851 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:52:52,852 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:52:52,856 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:52:52,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:52:52 WrapperNode [2023-08-03 18:52:52,857 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:52:52,858 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:52:52,858 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:52:52,858 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:52:52,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:52:52" (1/1) ... [2023-08-03 18:52:52,871 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:52:52" (1/1) ... [2023-08-03 18:52:52,885 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2023-08-03 18:52:52,885 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:52:52,886 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:52:52,886 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:52:52,886 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:52:52,891 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:52:52" (1/1) ... [2023-08-03 18:52:52,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:52:52" (1/1) ... [2023-08-03 18:52:52,893 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:52:52" (1/1) ... [2023-08-03 18:52:52,893 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:52:52" (1/1) ... [2023-08-03 18:52:52,897 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:52:52" (1/1) ... [2023-08-03 18:52:52,899 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:52:52" (1/1) ... [2023-08-03 18:52:52,900 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:52:52" (1/1) ... [2023-08-03 18:52:52,901 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:52:52" (1/1) ... [2023-08-03 18:52:52,903 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:52:52,903 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:52:52,903 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:52:52,903 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:52:52,904 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:52:52" (1/1) ... [2023-08-03 18:52:52,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:52:52,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:52:52,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 18:52:52,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 18:52:52,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:52:52,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:52:52,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:52:52,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:52:52,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:52:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:52:52,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:52:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:52:52,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:52:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:52:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:52:52,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:52:52,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:52:52,978 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 18:52:53,054 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:52:53,055 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:52:53,151 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:52:53,155 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:52:53,155 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 18:52:53,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:52:53 BoogieIcfgContainer [2023-08-03 18:52:53,157 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:52:53,158 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:52:53,158 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:52:53,160 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:52:53,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:52:52" (1/3) ... [2023-08-03 18:52:53,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88d4d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:52:53, skipping insertion in model container [2023-08-03 18:52:53,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:52:52" (2/3) ... [2023-08-03 18:52:53,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88d4d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:52:53, skipping insertion in model container [2023-08-03 18:52:53,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:52:53" (3/3) ... [2023-08-03 18:52:53,162 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe033_tso_bound2.i [2023-08-03 18:52:53,167 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:52:53,172 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:52:53,172 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 18:52:53,172 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:52:53,200 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:52:53,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 81 transitions, 172 flow [2023-08-03 18:52:53,264 INFO L124 PetriNetUnfolderBase]: 14/192 cut-off events. [2023-08-03 18:52:53,264 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:52:53,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 192 events. 14/192 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 560 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 109. Up to 8 conditions per place. [2023-08-03 18:52:53,267 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 81 transitions, 172 flow [2023-08-03 18:52:53,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 71 transitions, 152 flow [2023-08-03 18:52:53,272 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:52:53,277 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 71 transitions, 152 flow [2023-08-03 18:52:53,279 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 71 transitions, 152 flow [2023-08-03 18:52:53,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 71 transitions, 152 flow [2023-08-03 18:52:53,306 INFO L124 PetriNetUnfolderBase]: 10/152 cut-off events. [2023-08-03 18:52:53,306 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:52:53,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 152 events. 10/152 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 391 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 89. Up to 8 conditions per place. [2023-08-03 18:52:53,308 INFO L119 LiptonReduction]: Number of co-enabled transitions 876 [2023-08-03 18:52:54,589 INFO L134 LiptonReduction]: Checked pairs total: 1725 [2023-08-03 18:52:54,589 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-08-03 18:52:54,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:52:54,603 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;@590abffe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:52:54,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 18:52:54,605 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:52:54,605 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-03 18:52:54,605 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:52:54,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:52:54,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 18:52:54,606 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:52:54,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:52:54,609 INFO L85 PathProgramCache]: Analyzing trace with hash 9035770, now seen corresponding path program 1 times [2023-08-03 18:52:54,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:52:54,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853626377] [2023-08-03 18:52:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:54,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:52:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:52:54,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:52:54,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853626377] [2023-08-03 18:52:54,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853626377] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:52:54,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:52:54,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:52:54,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434437648] [2023-08-03 18:52:54,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:52:54,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:52:54,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:52:54,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:52:54,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:52:54,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 142 [2023-08-03 18:52:54,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:54,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:52:54,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 142 [2023-08-03 18:52:54,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:52:54,802 INFO L124 PetriNetUnfolderBase]: 66/155 cut-off events. [2023-08-03 18:52:54,802 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 18:52:54,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 155 events. 66/155 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 585 event pairs, 44 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 290. Up to 130 conditions per place. [2023-08-03 18:52:54,803 INFO L140 encePairwiseOnDemand]: 138/142 looper letters, 15 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-03 18:52:54,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 86 flow [2023-08-03 18:52:54,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:52:54,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:52:54,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-08-03 18:52:54,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375586854460094 [2023-08-03 18:52:54,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-08-03 18:52:54,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-08-03 18:52:54,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:52:54,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-08-03 18:52:54,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:54,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:54,821 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:54,822 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 48 flow. Second operand 3 states and 229 transitions. [2023-08-03 18:52:54,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 86 flow [2023-08-03 18:52:54,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 86 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 18:52:54,824 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 54 flow [2023-08-03 18:52:54,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-08-03 18:52:54,827 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2023-08-03 18:52:54,827 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 54 flow [2023-08-03 18:52:54,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:54,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:52:54,828 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:52:54,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:52:54,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:52:54,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:52:54,832 INFO L85 PathProgramCache]: Analyzing trace with hash 101154868, now seen corresponding path program 1 times [2023-08-03 18:52:54,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:52:54,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590806559] [2023-08-03 18:52:54,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:54,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:52:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:52:54,867 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:52:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:52:54,897 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:52:54,897 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:52:54,899 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 18:52:54,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 18:52:54,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 18:52:54,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:52:54,900 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 18:52:54,904 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:52:54,904 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:52:54,916 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:52:54,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 95 transitions, 214 flow [2023-08-03 18:52:54,966 INFO L124 PetriNetUnfolderBase]: 30/411 cut-off events. [2023-08-03 18:52:54,967 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 18:52:54,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 411 events. 30/411 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1720 event pairs, 0 based on Foata normal form. 0/360 useless extension candidates. Maximal degree in co-relation 295. Up to 18 conditions per place. [2023-08-03 18:52:54,968 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 95 transitions, 214 flow [2023-08-03 18:52:54,969 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 85 transitions, 194 flow [2023-08-03 18:52:54,969 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:52:54,970 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 85 transitions, 194 flow [2023-08-03 18:52:54,970 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 85 transitions, 194 flow [2023-08-03 18:52:54,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 85 transitions, 194 flow [2023-08-03 18:52:54,990 INFO L124 PetriNetUnfolderBase]: 21/321 cut-off events. [2023-08-03 18:52:54,990 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 18:52:54,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 321 events. 21/321 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1188 event pairs, 0 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 235. Up to 18 conditions per place. [2023-08-03 18:52:54,996 INFO L119 LiptonReduction]: Number of co-enabled transitions 2088 [2023-08-03 18:52:56,263 INFO L134 LiptonReduction]: Checked pairs total: 4582 [2023-08-03 18:52:56,263 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-08-03 18:52:56,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:52:56,265 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;@590abffe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:52:56,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 18:52:56,267 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:52:56,285 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-03 18:52:56,285 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:52:56,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:52:56,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 18:52:56,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:52:56,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:52:56,286 INFO L85 PathProgramCache]: Analyzing trace with hash 14393146, now seen corresponding path program 1 times [2023-08-03 18:52:56,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:52:56,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018673137] [2023-08-03 18:52:56,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:56,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:52:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:56,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:52:56,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:52:56,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018673137] [2023-08-03 18:52:56,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018673137] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:52:56,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:52:56,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:52:56,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263562112] [2023-08-03 18:52:56,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:52:56,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:52:56,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:52:56,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:52:56,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:52:56,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 160 [2023-08-03 18:52:56,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:56,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:52:56,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 160 [2023-08-03 18:52:56,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:52:56,511 INFO L124 PetriNetUnfolderBase]: 1674/2842 cut-off events. [2023-08-03 18:52:56,511 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2023-08-03 18:52:56,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5549 conditions, 2842 events. 1674/2842 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 17028 event pairs, 1140 based on Foata normal form. 0/2650 useless extension candidates. Maximal degree in co-relation 1582. Up to 2476 conditions per place. [2023-08-03 18:52:56,525 INFO L140 encePairwiseOnDemand]: 156/160 looper letters, 22 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-08-03 18:52:56,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 136 flow [2023-08-03 18:52:56,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:52:56,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:52:56,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2023-08-03 18:52:56,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2023-08-03 18:52:56,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2023-08-03 18:52:56,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2023-08-03 18:52:56,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:52:56,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2023-08-03 18:52:56,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:56,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:56,535 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:56,535 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 82 flow. Second operand 3 states and 272 transitions. [2023-08-03 18:52:56,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 136 flow [2023-08-03 18:52:56,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 32 transitions, 132 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 18:52:56,538 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 88 flow [2023-08-03 18:52:56,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2023-08-03 18:52:56,540 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2023-08-03 18:52:56,540 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 88 flow [2023-08-03 18:52:56,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:56,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:52:56,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:52:56,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 18:52:56,540 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:52:56,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:52:56,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1449783310, now seen corresponding path program 1 times [2023-08-03 18:52:56,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:52:56,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95114982] [2023-08-03 18:52:56,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:56,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:52:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:56,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:52:56,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:52:56,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95114982] [2023-08-03 18:52:56,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95114982] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:52:56,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097436668] [2023-08-03 18:52:56,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:56,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:52:56,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:52:56,633 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:52:56,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 18:52:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:56,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:52:56,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:52:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:52:56,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:52:56,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097436668] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:52:56,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:52:56,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:52:56,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172086002] [2023-08-03 18:52:56,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:52:56,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:52:56,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:52:56,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:52:56,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:52:56,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 160 [2023-08-03 18:52:56,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:56,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:52:56,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 160 [2023-08-03 18:52:56,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:52:56,887 INFO L124 PetriNetUnfolderBase]: 1646/2732 cut-off events. [2023-08-03 18:52:56,888 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-03 18:52:56,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5378 conditions, 2732 events. 1646/2732 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 16055 event pairs, 1120 based on Foata normal form. 0/2576 useless extension candidates. Maximal degree in co-relation 5343. Up to 2299 conditions per place. [2023-08-03 18:52:56,901 INFO L140 encePairwiseOnDemand]: 157/160 looper letters, 27 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-03 18:52:56,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 162 flow [2023-08-03 18:52:56,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:52:56,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:52:56,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-08-03 18:52:56,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2023-08-03 18:52:56,903 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-08-03 18:52:56,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-08-03 18:52:56,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:52:56,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-08-03 18:52:56,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:56,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:56,905 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:56,906 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 88 flow. Second operand 3 states and 275 transitions. [2023-08-03 18:52:56,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 162 flow [2023-08-03 18:52:56,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:52:56,908 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 98 flow [2023-08-03 18:52:56,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2023-08-03 18:52:56,910 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2023-08-03 18:52:56,910 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 98 flow [2023-08-03 18:52:56,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:56,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:52:56,910 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 18:52:56,923 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 18:52:57,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:52:57,119 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 18:52:57,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:52:57,120 INFO L85 PathProgramCache]: Analyzing trace with hash 507478352, now seen corresponding path program 1 times [2023-08-03 18:52:57,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:52:57,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404093819] [2023-08-03 18:52:57,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:57,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:52:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:52:57,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:52:57,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404093819] [2023-08-03 18:52:57,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404093819] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:52:57,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432601941] [2023-08-03 18:52:57,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:57,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:52:57,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:52:57,255 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:52:57,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 18:52:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:57,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:52:57,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:52:57,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:52:57,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:52:57,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432601941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:52:57,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:52:57,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 18:52:57,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350685797] [2023-08-03 18:52:57,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:52:57,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:52:57,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:52:57,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:52:57,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:52:57,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 160 [2023-08-03 18:52:57,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:57,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:52:57,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 160 [2023-08-03 18:52:57,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:52:57,516 INFO L124 PetriNetUnfolderBase]: 1634/2715 cut-off events. [2023-08-03 18:52:57,516 INFO L125 PetriNetUnfolderBase]: For 351/351 co-relation queries the response was YES. [2023-08-03 18:52:57,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5671 conditions, 2715 events. 1634/2715 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 15838 event pairs, 744 based on Foata normal form. 9/2712 useless extension candidates. Maximal degree in co-relation 1600. Up to 2377 conditions per place. [2023-08-03 18:52:57,531 INFO L140 encePairwiseOnDemand]: 156/160 looper letters, 26 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-08-03 18:52:57,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 175 flow [2023-08-03 18:52:57,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:52:57,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:52:57,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 435 transitions. [2023-08-03 18:52:57,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54375 [2023-08-03 18:52:57,532 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 435 transitions. [2023-08-03 18:52:57,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 435 transitions. [2023-08-03 18:52:57,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:52:57,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 435 transitions. [2023-08-03 18:52:57,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:57,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:57,535 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:57,535 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 98 flow. Second operand 5 states and 435 transitions. [2023-08-03 18:52:57,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 175 flow [2023-08-03 18:52:57,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 171 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 18:52:57,537 INFO L231 Difference]: Finished difference. Result has 45 places, 30 transitions, 114 flow [2023-08-03 18:52:57,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2023-08-03 18:52:57,537 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2023-08-03 18:52:57,538 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 114 flow [2023-08-03 18:52:57,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:57,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:52:57,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:52:57,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 18:52:57,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:52:57,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:52:57,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:52:57,743 INFO L85 PathProgramCache]: Analyzing trace with hash 852373513, now seen corresponding path program 1 times [2023-08-03 18:52:57,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:52:57,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918648530] [2023-08-03 18:52:57,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:57,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:52:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:57,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:52:57,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:52:57,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918648530] [2023-08-03 18:52:57,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918648530] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:52:57,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222390181] [2023-08-03 18:52:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:57,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:52:57,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:52:57,811 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:52:57,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 18:52:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:57,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:52:57,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:52:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:52:57,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:52:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:52:57,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222390181] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:52:57,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:52:57,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 18:52:57,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032853751] [2023-08-03 18:52:57,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:52:57,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:52:57,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:52:57,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:52:57,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:52:57,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 160 [2023-08-03 18:52:57,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:57,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:52:57,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 160 [2023-08-03 18:52:57,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:52:58,028 INFO L124 PetriNetUnfolderBase]: 1324/2144 cut-off events. [2023-08-03 18:52:58,029 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2023-08-03 18:52:58,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4484 conditions, 2144 events. 1324/2144 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11623 event pairs, 558 based on Foata normal form. 3/2138 useless extension candidates. Maximal degree in co-relation 1600. Up to 1882 conditions per place. [2023-08-03 18:52:58,039 INFO L140 encePairwiseOnDemand]: 157/160 looper letters, 26 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2023-08-03 18:52:58,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 36 transitions, 178 flow [2023-08-03 18:52:58,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:52:58,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:52:58,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2023-08-03 18:52:58,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5515625 [2023-08-03 18:52:58,041 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2023-08-03 18:52:58,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2023-08-03 18:52:58,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:52:58,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2023-08-03 18:52:58,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:58,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:58,043 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:58,043 INFO L175 Difference]: Start difference. First operand has 45 places, 30 transitions, 114 flow. Second operand 4 states and 353 transitions. [2023-08-03 18:52:58,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 36 transitions, 178 flow [2023-08-03 18:52:58,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 36 transitions, 173 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 18:52:58,044 INFO L231 Difference]: Finished difference. Result has 46 places, 29 transitions, 105 flow [2023-08-03 18:52:58,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=46, PETRI_TRANSITIONS=29} [2023-08-03 18:52:58,045 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2023-08-03 18:52:58,045 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 29 transitions, 105 flow [2023-08-03 18:52:58,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:58,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:52:58,046 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:52:58,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 18:52:58,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:52:58,272 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:52:58,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:52:58,272 INFO L85 PathProgramCache]: Analyzing trace with hash 973200892, now seen corresponding path program 1 times [2023-08-03 18:52:58,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:52:58,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620442070] [2023-08-03 18:52:58,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:58,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:52:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:58,330 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:52:58,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:52:58,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620442070] [2023-08-03 18:52:58,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620442070] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:52:58,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208205269] [2023-08-03 18:52:58,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:58,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:52:58,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:52:58,333 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:52:58,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 18:52:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:58,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:52:58,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:52:58,406 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:52:58,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:52:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:52:58,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208205269] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:52:58,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:52:58,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:52:58,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076931970] [2023-08-03 18:52:58,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:52:58,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:52:58,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:52:58,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:52:58,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:52:58,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 160 [2023-08-03 18:52:58,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 29 transitions, 105 flow. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:58,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:52:58,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 160 [2023-08-03 18:52:58,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:52:58,564 INFO L124 PetriNetUnfolderBase]: 1216/1888 cut-off events. [2023-08-03 18:52:58,564 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2023-08-03 18:52:58,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4042 conditions, 1888 events. 1216/1888 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9515 event pairs, 400 based on Foata normal form. 27/1906 useless extension candidates. Maximal degree in co-relation 1439. Up to 943 conditions per place. [2023-08-03 18:52:58,573 INFO L140 encePairwiseOnDemand]: 156/160 looper letters, 34 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-08-03 18:52:58,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 213 flow [2023-08-03 18:52:58,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:52:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:52:58,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 362 transitions. [2023-08-03 18:52:58,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565625 [2023-08-03 18:52:58,575 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 362 transitions. [2023-08-03 18:52:58,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 362 transitions. [2023-08-03 18:52:58,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:52:58,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 362 transitions. [2023-08-03 18:52:58,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:58,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:58,577 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:58,577 INFO L175 Difference]: Start difference. First operand has 46 places, 29 transitions, 105 flow. Second operand 4 states and 362 transitions. [2023-08-03 18:52:58,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 213 flow [2023-08-03 18:52:58,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 207 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:52:58,579 INFO L231 Difference]: Finished difference. Result has 48 places, 30 transitions, 119 flow [2023-08-03 18:52:58,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=30} [2023-08-03 18:52:58,581 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2023-08-03 18:52:58,581 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 30 transitions, 119 flow [2023-08-03 18:52:58,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:58,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:52:58,582 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:52:58,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-03 18:52:58,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:52:58,786 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 18:52:58,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:52:58,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1949331822, now seen corresponding path program 1 times [2023-08-03 18:52:58,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:52:58,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670374646] [2023-08-03 18:52:58,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:58,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:52:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:52:58,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:52:58,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670374646] [2023-08-03 18:52:58,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670374646] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:52:58,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284376540] [2023-08-03 18:52:58,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:58,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:52:58,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:52:58,862 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:52:58,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 18:52:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:58,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:52:58,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:52:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:52:58,940 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:52:58,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284376540] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:52:58,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:52:58,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:52:58,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652545218] [2023-08-03 18:52:58,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:52:58,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:52:58,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:52:58,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:52:58,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:52:58,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 160 [2023-08-03 18:52:58,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 30 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:58,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:52:58,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 160 [2023-08-03 18:52:58,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:52:59,062 INFO L124 PetriNetUnfolderBase]: 1000/1537 cut-off events. [2023-08-03 18:52:59,062 INFO L125 PetriNetUnfolderBase]: For 784/784 co-relation queries the response was YES. [2023-08-03 18:52:59,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3679 conditions, 1537 events. 1000/1537 cut-off events. For 784/784 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7162 event pairs, 22 based on Foata normal form. 81/1609 useless extension candidates. Maximal degree in co-relation 1301. Up to 891 conditions per place. [2023-08-03 18:52:59,069 INFO L140 encePairwiseOnDemand]: 157/160 looper letters, 38 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-08-03 18:52:59,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 231 flow [2023-08-03 18:52:59,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:52:59,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:52:59,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 446 transitions. [2023-08-03 18:52:59,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575 [2023-08-03 18:52:59,071 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 446 transitions. [2023-08-03 18:52:59,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 446 transitions. [2023-08-03 18:52:59,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:52:59,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 446 transitions. [2023-08-03 18:52:59,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:59,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:59,073 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:59,073 INFO L175 Difference]: Start difference. First operand has 48 places, 30 transitions, 119 flow. Second operand 5 states and 446 transitions. [2023-08-03 18:52:59,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 231 flow [2023-08-03 18:52:59,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 224 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 18:52:59,075 INFO L231 Difference]: Finished difference. Result has 48 places, 28 transitions, 108 flow [2023-08-03 18:52:59,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, 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=48, PETRI_TRANSITIONS=28} [2023-08-03 18:52:59,075 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2023-08-03 18:52:59,076 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 28 transitions, 108 flow [2023-08-03 18:52:59,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:59,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:52:59,076 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:52:59,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-03 18:52:59,280 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 18:52:59,280 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 18:52:59,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:52:59,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1949331848, now seen corresponding path program 1 times [2023-08-03 18:52:59,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:52:59,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094892453] [2023-08-03 18:52:59,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:59,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:52:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:59,374 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:52:59,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:52:59,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094892453] [2023-08-03 18:52:59,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094892453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:52:59,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:52:59,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 18:52:59,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414442503] [2023-08-03 18:52:59,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:52:59,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:52:59,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:52:59,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:52:59,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:52:59,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 160 [2023-08-03 18:52:59,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 28 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:59,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:52:59,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 160 [2023-08-03 18:52:59,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:52:59,755 INFO L124 PetriNetUnfolderBase]: 5131/7256 cut-off events. [2023-08-03 18:52:59,755 INFO L125 PetriNetUnfolderBase]: For 4821/4821 co-relation queries the response was YES. [2023-08-03 18:52:59,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17075 conditions, 7256 events. 5131/7256 cut-off events. For 4821/4821 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 37739 event pairs, 1846 based on Foata normal form. 196/7446 useless extension candidates. Maximal degree in co-relation 16988. Up to 4673 conditions per place. [2023-08-03 18:52:59,787 INFO L140 encePairwiseOnDemand]: 152/160 looper letters, 42 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2023-08-03 18:52:59,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 51 transitions, 299 flow [2023-08-03 18:52:59,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:52:59,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:52:59,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-08-03 18:52:59,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2023-08-03 18:52:59,789 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-08-03 18:52:59,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-08-03 18:52:59,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:52:59,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-08-03 18:52:59,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:59,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:59,790 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:59,790 INFO L175 Difference]: Start difference. First operand has 48 places, 28 transitions, 108 flow. Second operand 3 states and 280 transitions. [2023-08-03 18:52:59,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 51 transitions, 299 flow [2023-08-03 18:52:59,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 289 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:52:59,800 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 157 flow [2023-08-03 18:52:59,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2023-08-03 18:52:59,801 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2023-08-03 18:52:59,801 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 157 flow [2023-08-03 18:52:59,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:59,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:52:59,801 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:52:59,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 18:52:59,802 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:52:59,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:52:59,802 INFO L85 PathProgramCache]: Analyzing trace with hash -299746011, now seen corresponding path program 1 times [2023-08-03 18:52:59,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:52:59,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254768533] [2023-08-03 18:52:59,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:59,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:52:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:52:59,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:52:59,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254768533] [2023-08-03 18:52:59,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254768533] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:52:59,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:52:59,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:52:59,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446512460] [2023-08-03 18:52:59,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:52:59,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:52:59,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:52:59,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:52:59,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:52:59,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 160 [2023-08-03 18:52:59,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:59,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:52:59,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 160 [2023-08-03 18:52:59,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:53:00,105 INFO L124 PetriNetUnfolderBase]: 2711/4158 cut-off events. [2023-08-03 18:53:00,105 INFO L125 PetriNetUnfolderBase]: For 3514/3530 co-relation queries the response was YES. [2023-08-03 18:53:00,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11403 conditions, 4158 events. 2711/4158 cut-off events. For 3514/3530 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 23692 event pairs, 685 based on Foata normal form. 43/3834 useless extension candidates. Maximal degree in co-relation 6440. Up to 3208 conditions per place. [2023-08-03 18:53:00,127 INFO L140 encePairwiseOnDemand]: 154/160 looper letters, 39 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2023-08-03 18:53:00,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 335 flow [2023-08-03 18:53:00,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:53:00,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:53:00,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-08-03 18:53:00,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2023-08-03 18:53:00,128 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-08-03 18:53:00,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-08-03 18:53:00,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:53:00,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-08-03 18:53:00,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:53:00,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:53:00,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:53:00,130 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 157 flow. Second operand 3 states and 280 transitions. [2023-08-03 18:53:00,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 335 flow [2023-08-03 18:53:00,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 54 transitions, 317 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 18:53:00,134 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 176 flow [2023-08-03 18:53:00,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2023-08-03 18:53:00,135 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 13 predicate places. [2023-08-03 18:53:00,135 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 176 flow [2023-08-03 18:53:00,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:53:00,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:53:00,135 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:53:00,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 18:53:00,135 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:53:00,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:53:00,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1593062632, now seen corresponding path program 1 times [2023-08-03 18:53:00,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:53:00,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931696558] [2023-08-03 18:53:00,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:53:00,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:53:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:53:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-03 18:53:00,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:53:00,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931696558] [2023-08-03 18:53:00,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931696558] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:53:00,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032389448] [2023-08-03 18:53:00,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:53:00,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:53:00,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:53:00,222 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:53:00,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 18:53:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:53:00,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-03 18:53:00,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:53:00,409 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 18:53:00,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:53:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 18:53:00,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032389448] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:53:00,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:53:00,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-03 18:53:00,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239192570] [2023-08-03 18:53:00,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:53:00,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-03 18:53:00,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:53:00,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-03 18:53:00,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-08-03 18:53:00,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 160 [2023-08-03 18:53:00,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 176 flow. Second operand has 13 states, 13 states have (on average 73.53846153846153) internal successors, (956), 13 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:53:00,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:53:00,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 160 [2023-08-03 18:53:00,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:53:01,439 INFO L124 PetriNetUnfolderBase]: 5665/8362 cut-off events. [2023-08-03 18:53:01,439 INFO L125 PetriNetUnfolderBase]: For 9509/9509 co-relation queries the response was YES. [2023-08-03 18:53:01,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26889 conditions, 8362 events. 5665/8362 cut-off events. For 9509/9509 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 48720 event pairs, 59 based on Foata normal form. 519/8879 useless extension candidates. Maximal degree in co-relation 26786. Up to 2988 conditions per place. [2023-08-03 18:53:01,478 INFO L140 encePairwiseOnDemand]: 145/160 looper letters, 188 selfloop transitions, 188 changer transitions 17/395 dead transitions. [2023-08-03 18:53:01,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 395 transitions, 2528 flow [2023-08-03 18:53:01,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-03 18:53:01,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-03 18:53:01,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2192 transitions. [2023-08-03 18:53:01,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269230769230769 [2023-08-03 18:53:01,483 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2192 transitions. [2023-08-03 18:53:01,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2192 transitions. [2023-08-03 18:53:01,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:53:01,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2192 transitions. [2023-08-03 18:53:01,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 84.3076923076923) internal successors, (2192), 26 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:53:01,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 160.0) internal successors, (4320), 27 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:53:01,491 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 160.0) internal successors, (4320), 27 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:53:01,491 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 176 flow. Second operand 26 states and 2192 transitions. [2023-08-03 18:53:01,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 395 transitions, 2528 flow [2023-08-03 18:53:01,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 395 transitions, 2515 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:53:01,500 INFO L231 Difference]: Finished difference. Result has 90 places, 245 transitions, 1693 flow [2023-08-03 18:53:01,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1693, PETRI_PLACES=90, PETRI_TRANSITIONS=245} [2023-08-03 18:53:01,501 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 53 predicate places. [2023-08-03 18:53:01,501 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 245 transitions, 1693 flow [2023-08-03 18:53:01,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 73.53846153846153) internal successors, (956), 13 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:53:01,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:53:01,501 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:53:01,511 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 18:53:01,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:53:01,706 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 18:53:01,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:53:01,706 INFO L85 PathProgramCache]: Analyzing trace with hash -737884233, now seen corresponding path program 1 times [2023-08-03 18:53:01,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:53:01,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794196991] [2023-08-03 18:53:01,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:53:01,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:53:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:53:01,717 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:53:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:53:01,730 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:53:01,730 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:53:01,730 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 18:53:01,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 18:53:01,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 18:53:01,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 18:53:01,731 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:53:01,734 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 18:53:01,734 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 18:53:01,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 06:53:01 BasicIcfg [2023-08-03 18:53:01,761 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 18:53:01,761 INFO L158 Benchmark]: Toolchain (without parser) took 9194.93ms. Allocated memory was 331.4MB in the beginning and 530.6MB in the end (delta: 199.2MB). Free memory was 295.4MB in the beginning and 196.0MB in the end (delta: 99.5MB). Peak memory consumption was 301.4MB. Max. memory is 16.0GB. [2023-08-03 18:53:01,761 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 331.4MB. Free memory is still 288.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 18:53:01,761 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.99ms. Allocated memory is still 331.4MB. Free memory was 295.4MB in the beginning and 275.3MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 18:53:01,762 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.76ms. Allocated memory is still 331.4MB. Free memory was 275.3MB in the beginning and 273.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 18:53:01,762 INFO L158 Benchmark]: Boogie Preprocessor took 16.94ms. Allocated memory is still 331.4MB. Free memory was 273.1MB in the beginning and 271.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 18:53:01,762 INFO L158 Benchmark]: RCFGBuilder took 253.72ms. Allocated memory is still 331.4MB. Free memory was 271.6MB in the beginning and 258.6MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 18:53:01,762 INFO L158 Benchmark]: TraceAbstraction took 8602.63ms. Allocated memory was 331.4MB in the beginning and 530.6MB in the end (delta: 199.2MB). Free memory was 257.8MB in the beginning and 196.0MB in the end (delta: 61.8MB). Peak memory consumption was 263.7MB. Max. memory is 16.0GB. [2023-08-03 18:53:01,763 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 331.4MB. Free memory is still 288.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 289.99ms. Allocated memory is still 331.4MB. Free memory was 295.4MB in the beginning and 275.3MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.76ms. Allocated memory is still 331.4MB. Free memory was 275.3MB in the beginning and 273.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 16.94ms. Allocated memory is still 331.4MB. Free memory was 273.1MB in the beginning and 271.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 253.72ms. Allocated memory is still 331.4MB. Free memory was 271.6MB in the beginning and 258.6MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 8602.63ms. Allocated memory was 331.4MB in the beginning and 530.6MB in the end (delta: 199.2MB). Free memory was 257.8MB in the beginning and 196.0MB in the end (delta: 61.8MB). Peak memory consumption was 263.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3s, 73 PlacesBefore, 23 PlacesAfterwards, 71 TransitionsBefore, 19 TransitionsAfterwards, 876 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 61 TotalNumberOfCompositions, 1725 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1114, independent: 1055, independent conditional: 0, independent unconditional: 1055, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 481, independent: 463, independent conditional: 0, independent unconditional: 463, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1114, independent: 592, independent conditional: 0, independent unconditional: 592, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 481, unknown conditional: 0, unknown unconditional: 481] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3s, 91 PlacesBefore, 37 PlacesAfterwards, 85 TransitionsBefore, 29 TransitionsAfterwards, 2088 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 65 TotalNumberOfCompositions, 4582 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2151, independent: 2045, independent conditional: 0, independent unconditional: 2045, dependent: 106, dependent conditional: 0, dependent unconditional: 106, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1054, independent: 1024, independent conditional: 0, independent unconditional: 1024, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2151, independent: 1021, independent conditional: 0, independent unconditional: 1021, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 1054, unknown conditional: 0, unknown unconditional: 1054] , Statistics on independence cache: Total cache size (in pairs): 88, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p0_EAX = 0; [L711] 0 _Bool main$tmp_guard0; [L712] 0 _Bool main$tmp_guard1; [L714] 0 int x = 0; [L716] 0 int y = 0; [L760] 0 pthread_t t2573[2]; [L761] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t2573={5:0}, x=0, y=0] [L761] COND TRUE 0 asdf<2 [L761] FCALL, FORK 0 pthread_create(&t2573[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2573[asdf], ((void *)0), P0, ((void *)0))=-1, t2573={5:0}, x=0, y=0] [L761] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t2573={5:0}, x=0, y=0] [L761] COND TRUE 0 asdf<2 [L761] FCALL, FORK 0 pthread_create(&t2573[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2573[asdf], ((void *)0), P0, ((void *)0))=0, t2573={5:0}, x=0, y=0] [L761] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2573={5:0}, x=0, y=0] [L761] COND FALSE 0 !(asdf<2) [L762] 0 pthread_t t2574[2]; [L763] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2573={5:0}, t2574={3:0}, x=0, y=0] [L763] COND TRUE 0 asdf<2 [L763] FCALL, FORK 0 pthread_create(&t2574[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2574[asdf], ((void *)0), P1, ((void *)0))=1, t2573={5:0}, t2574={3:0}, x=0, y=0] [L763] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2573={5:0}, t2574={3:0}, x=0, y=0] [L763] COND TRUE 0 asdf<2 [L763] FCALL, FORK 0 pthread_create(&t2574[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2574[asdf], ((void *)0), P1, ((void *)0))=2, t2573={5:0}, t2574={3:0}, x=0, y=0] [L720] 1 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L720] 2 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L763] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2573={5:0}, t2574={3:0}, x=0, y=2] [L725] 1 __unbuffered_p0_EAX = x VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L730] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L732] 1 return 0; [L730] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L732] 2 return 0; [L763] COND FALSE 0 !(asdf<2) [L765] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L767] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) VAL [\old(cond)=1, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, cond=1, main$tmp_guard0=1, main$tmp_guard1=0, x=0, y=2] [L767] RET 0 assume_abort_if_not(main$tmp_guard0) [L771] 0 main$tmp_guard1 = !(y == 2 && __unbuffered_p0_EAX == 0) [L773] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, x=0, y=2] - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 763]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 92 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38 IncrementalHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 7 mSDtfsCounter, 38 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 106 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.8s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 507 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 444 mSDsluCounter, 68 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 144 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1015 IncrementalHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 144 mSolverCounterUnsat, 21 mSDtfsCounter, 1015 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 124 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1693occurred in iteration=9, InterpolantAutomatonStates: 56, 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, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 251 NumberOfCodeBlocks, 251 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 258 ConstructedInterpolants, 0 QuantifiedInterpolants, 1021 SizeOfPredicates, 1 NumberOfNonLiveVariables, 737 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 105/133 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-03 18:53:01,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...