/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 PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_40-traces-ex-6_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:33:32,618 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:33:32,693 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:33:32,698 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:33:32,698 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:33:32,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:33:32,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:33:32,715 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:33:32,716 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:33:32,716 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:33:32,717 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:33:32,717 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:33:32,717 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:33:32,718 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:33:32,718 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:33:32,718 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:33:32,719 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:33:32,719 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:33:32,719 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:33:32,720 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:33:32,720 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:33:32,723 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:33:32,723 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:33:32,724 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:33:32,726 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:33:32,726 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:33:32,726 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:33:32,726 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:33:32,727 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:33:32,727 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:33:32,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:33:32,727 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:33:32,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:33:32,728 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:33:32,728 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:33:32,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:33:32,728 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:33:32,728 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:33:32,729 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:33:32,729 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:33:32,729 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:33:32,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:33:32,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:33:32,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:33:32,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:33:32,989 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:33:32,989 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:33:32,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_40-traces-ex-6_true_bound2.i [2023-08-04 04:33:34,137 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:33:34,397 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:33:34,398 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_40-traces-ex-6_true_bound2.i [2023-08-04 04:33:34,423 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23306acce/0035035b65564ac281d5152fbe53fd85/FLAG1899d0d23 [2023-08-04 04:33:34,439 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23306acce/0035035b65564ac281d5152fbe53fd85 [2023-08-04 04:33:34,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:33:34,443 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:33:34,444 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:33:34,444 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:33:34,449 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:33:34,450 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:33:34" (1/1) ... [2023-08-04 04:33:34,451 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5573cf41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:34, skipping insertion in model container [2023-08-04 04:33:34,451 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:33:34" (1/1) ... [2023-08-04 04:33:34,498 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:33:34,621 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_40-traces-ex-6_true_bound2.i[1088,1101] [2023-08-04 04:33:34,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:33:34,746 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:33:34,763 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_40-traces-ex-6_true_bound2.i[1088,1101] [2023-08-04 04:33:34,781 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-04 04:33:34,793 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-04 04:33:34,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:33:34,845 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:33:34,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:34 WrapperNode [2023-08-04 04:33:34,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:33:34,847 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:33:34,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:33:34,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:33:34,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:34" (1/1) ... [2023-08-04 04:33:34,870 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:34" (1/1) ... [2023-08-04 04:33:34,895 INFO L138 Inliner]: procedures = 162, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2023-08-04 04:33:34,895 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:33:34,896 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:33:34,896 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:33:34,896 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:33:34,903 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:34" (1/1) ... [2023-08-04 04:33:34,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:34" (1/1) ... [2023-08-04 04:33:34,916 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:34" (1/1) ... [2023-08-04 04:33:34,916 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:34" (1/1) ... [2023-08-04 04:33:34,927 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:34" (1/1) ... [2023-08-04 04:33:34,930 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:34" (1/1) ... [2023-08-04 04:33:34,931 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:34" (1/1) ... [2023-08-04 04:33:34,932 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:34" (1/1) ... [2023-08-04 04:33:34,944 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:33:34,945 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:33:34,945 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:33:34,945 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:33:34,946 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:34" (1/1) ... [2023-08-04 04:33:34,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:33:34,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:33:34,997 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) [2023-08-04 04:33:35,007 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 [2023-08-04 04:33:35,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:33:35,034 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:33:35,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:33:35,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:33:35,034 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-04 04:33:35,034 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-04 04:33:35,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:33:35,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:33:35,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:33:35,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:33:35,038 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 04:33:35,155 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:33:35,157 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:33:35,279 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:33:35,285 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:33:35,286 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-04 04:33:35,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:33:35 BoogieIcfgContainer [2023-08-04 04:33:35,287 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:33:35,289 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:33:35,289 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:33:35,292 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:33:35,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:33:34" (1/3) ... [2023-08-04 04:33:35,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f46689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:33:35, skipping insertion in model container [2023-08-04 04:33:35,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:34" (2/3) ... [2023-08-04 04:33:35,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f46689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:33:35, skipping insertion in model container [2023-08-04 04:33:35,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:33:35" (3/3) ... [2023-08-04 04:33:35,294 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_40-traces-ex-6_true_bound2.i [2023-08-04 04:33:35,302 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:33:35,309 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:33:35,309 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 04:33:35,309 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:33:35,360 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:33:35,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 68 transitions, 141 flow [2023-08-04 04:33:35,430 INFO L124 PetriNetUnfolderBase]: 4/92 cut-off events. [2023-08-04 04:33:35,430 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:35,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 92 events. 4/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 132 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2023-08-04 04:33:35,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 68 transitions, 141 flow [2023-08-04 04:33:35,437 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 59 transitions, 121 flow [2023-08-04 04:33:35,440 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:33:35,448 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 59 transitions, 121 flow [2023-08-04 04:33:35,451 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 59 transitions, 121 flow [2023-08-04 04:33:35,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 59 transitions, 121 flow [2023-08-04 04:33:35,470 INFO L124 PetriNetUnfolderBase]: 2/75 cut-off events. [2023-08-04 04:33:35,470 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:35,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 75 events. 2/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 42. Up to 4 conditions per place. [2023-08-04 04:33:35,471 INFO L119 LiptonReduction]: Number of co-enabled transitions 462 [2023-08-04 04:33:37,374 INFO L134 LiptonReduction]: Checked pairs total: 908 [2023-08-04 04:33:37,375 INFO L136 LiptonReduction]: Total number of compositions: 46 [2023-08-04 04:33:37,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:33:37,391 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;@3327b844, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:33:37,391 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:33:37,394 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:33:37,394 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-04 04:33:37,394 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:37,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:37,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 04:33:37,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:33:37,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:37,399 INFO L85 PathProgramCache]: Analyzing trace with hash 226507501, now seen corresponding path program 1 times [2023-08-04 04:33:37,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:37,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243557533] [2023-08-04 04:33:37,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:37,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:37,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:33:37,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:33:37,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243557533] [2023-08-04 04:33:37,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243557533] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:33:37,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:33:37,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:33:37,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696079076] [2023-08-04 04:33:37,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:33:37,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:33:37,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:33:37,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:33:37,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:33:37,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 114 [2023-08-04 04:33:37,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 31 flow. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:37,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:33:37,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 114 [2023-08-04 04:33:37,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:33:37,690 INFO L124 PetriNetUnfolderBase]: 18/51 cut-off events. [2023-08-04 04:33:37,691 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:37,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 51 events. 18/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 135 event pairs, 5 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 93. Up to 43 conditions per place. [2023-08-04 04:33:37,692 INFO L140 encePairwiseOnDemand]: 111/114 looper letters, 12 selfloop transitions, 2 changer transitions 1/18 dead transitions. [2023-08-04 04:33:37,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 18 transitions, 69 flow [2023-08-04 04:33:37,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:33:37,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:33:37,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2023-08-04 04:33:37,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5730994152046783 [2023-08-04 04:33:37,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 196 transitions. [2023-08-04 04:33:37,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 196 transitions. [2023-08-04 04:33:37,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:33:37,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 196 transitions. [2023-08-04 04:33:37,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:37,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:37,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:37,715 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 31 flow. Second operand 3 states and 196 transitions. [2023-08-04 04:33:37,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 18 transitions, 69 flow [2023-08-04 04:33:37,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 69 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:33:37,718 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 39 flow [2023-08-04 04:33:37,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-04 04:33:37,723 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 3 predicate places. [2023-08-04 04:33:37,723 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 39 flow [2023-08-04 04:33:37,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:37,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:37,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:33:37,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:33:37,724 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:33:37,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:37,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1719660698, now seen corresponding path program 1 times [2023-08-04 04:33:37,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:37,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349952191] [2023-08-04 04:33:37,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:37,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:33:37,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:33:37,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349952191] [2023-08-04 04:33:37,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349952191] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:33:37,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543909997] [2023-08-04 04:33:37,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:37,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:33:37,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:33:37,859 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) [2023-08-04 04:33:37,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 04:33:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:37,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:33:37,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:33:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:33:37,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:33:37,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:33:37,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543909997] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:33:37,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:33:37,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:33:37,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788170144] [2023-08-04 04:33:37,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:33:37,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:33:37,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:33:37,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:33:37,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:33:38,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 114 [2023-08-04 04:33:38,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 39 flow. Second operand has 5 states, 5 states have (on average 61.4) internal successors, (307), 5 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:38,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:33:38,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 114 [2023-08-04 04:33:38,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:33:38,038 INFO L124 PetriNetUnfolderBase]: 6/23 cut-off events. [2023-08-04 04:33:38,038 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-04 04:33:38,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 23 events. 6/23 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 1 based on Foata normal form. 4/26 useless extension candidates. Maximal degree in co-relation 45. Up to 14 conditions per place. [2023-08-04 04:33:38,039 INFO L140 encePairwiseOnDemand]: 111/114 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2023-08-04 04:33:38,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 14 transitions, 59 flow [2023-08-04 04:33:38,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:33:38,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:33:38,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2023-08-04 04:33:38,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2023-08-04 04:33:38,042 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 248 transitions. [2023-08-04 04:33:38,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 248 transitions. [2023-08-04 04:33:38,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:33:38,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 248 transitions. [2023-08-04 04:33:38,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:38,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:38,045 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:38,045 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 39 flow. Second operand 4 states and 248 transitions. [2023-08-04 04:33:38,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 14 transitions, 59 flow [2023-08-04 04:33:38,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 14 transitions, 53 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:33:38,047 INFO L231 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2023-08-04 04:33:38,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2023-08-04 04:33:38,048 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -1 predicate places. [2023-08-04 04:33:38,048 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2023-08-04 04:33:38,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.4) internal successors, (307), 5 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:38,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 04:33:38,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 04:33:38,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:33:38,257 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 04:33:38,261 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 04:33:38,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 68 transitions, 141 flow [2023-08-04 04:33:38,282 INFO L124 PetriNetUnfolderBase]: 4/92 cut-off events. [2023-08-04 04:33:38,283 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:38,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 92 events. 4/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 132 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2023-08-04 04:33:38,283 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 68 transitions, 141 flow [2023-08-04 04:33:38,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 48 transitions, 101 flow [2023-08-04 04:33:38,284 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:33:38,284 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 48 transitions, 101 flow [2023-08-04 04:33:38,289 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 48 transitions, 101 flow [2023-08-04 04:33:38,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 101 flow [2023-08-04 04:33:38,296 INFO L124 PetriNetUnfolderBase]: 0/52 cut-off events. [2023-08-04 04:33:38,296 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:38,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 52 events. 0/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-04 04:33:38,297 INFO L119 LiptonReduction]: Number of co-enabled transitions 220 [2023-08-04 04:33:40,164 INFO L134 LiptonReduction]: Checked pairs total: 154 [2023-08-04 04:33:40,164 INFO L136 LiptonReduction]: Total number of compositions: 46 [2023-08-04 04:33:40,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:33:40,167 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;@3327b844, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:33:40,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:33:40,169 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:33:40,169 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-04 04:33:40,169 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:40,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:40,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 04:33:40,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:33:40,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:40,170 INFO L85 PathProgramCache]: Analyzing trace with hash 8653966, now seen corresponding path program 1 times [2023-08-04 04:33:40,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:40,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639817535] [2023-08-04 04:33:40,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:40,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:33:40,195 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:33:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:33:40,219 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:33:40,219 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:33:40,220 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:33:40,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 04:33:40,220 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:33:40,221 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:33:40,221 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:33:40,221 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:33:40,254 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:33:40,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 80 transitions, 172 flow [2023-08-04 04:33:40,270 INFO L124 PetriNetUnfolderBase]: 6/133 cut-off events. [2023-08-04 04:33:40,271 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:33:40,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 133 events. 6/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 252 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 93. Up to 6 conditions per place. [2023-08-04 04:33:40,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 80 transitions, 172 flow [2023-08-04 04:33:40,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 71 transitions, 150 flow [2023-08-04 04:33:40,272 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:33:40,272 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 71 transitions, 150 flow [2023-08-04 04:33:40,273 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 71 transitions, 150 flow [2023-08-04 04:33:40,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 71 transitions, 150 flow [2023-08-04 04:33:40,283 INFO L124 PetriNetUnfolderBase]: 3/108 cut-off events. [2023-08-04 04:33:40,283 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:33:40,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 108 events. 3/108 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 153 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 77. Up to 6 conditions per place. [2023-08-04 04:33:40,284 INFO L119 LiptonReduction]: Number of co-enabled transitions 1188 [2023-08-04 04:33:41,971 INFO L134 LiptonReduction]: Checked pairs total: 3280 [2023-08-04 04:33:41,971 INFO L136 LiptonReduction]: Total number of compositions: 50 [2023-08-04 04:33:41,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:33:41,974 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;@3327b844, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:33:41,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:33:41,976 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:33:41,976 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-04 04:33:41,976 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:41,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:41,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 04:33:41,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:33:41,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:41,977 INFO L85 PathProgramCache]: Analyzing trace with hash 405914794, now seen corresponding path program 1 times [2023-08-04 04:33:41,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:41,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665775618] [2023-08-04 04:33:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:41,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:42,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:33:42,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:33:42,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665775618] [2023-08-04 04:33:42,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665775618] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:33:42,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:33:42,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:33:42,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419150897] [2023-08-04 04:33:42,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:33:42,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:33:42,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:33:42,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:33:42,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:33:42,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 130 [2023-08-04 04:33:42,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:42,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:33:42,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 130 [2023-08-04 04:33:42,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:33:42,089 INFO L124 PetriNetUnfolderBase]: 219/453 cut-off events. [2023-08-04 04:33:42,089 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-04 04:33:42,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 453 events. 219/453 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2241 event pairs, 96 based on Foata normal form. 0/426 useless extension candidates. Maximal degree in co-relation 204. Up to 384 conditions per place. [2023-08-04 04:33:42,093 INFO L140 encePairwiseOnDemand]: 127/130 looper letters, 19 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-08-04 04:33:42,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 104 flow [2023-08-04 04:33:42,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:33:42,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:33:42,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-08-04 04:33:42,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6025641025641025 [2023-08-04 04:33:42,095 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-08-04 04:33:42,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-08-04 04:33:42,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:33:42,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-08-04 04:33:42,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:42,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:42,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:42,098 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 52 flow. Second operand 3 states and 235 transitions. [2023-08-04 04:33:42,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 104 flow [2023-08-04 04:33:42,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 27 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:33:42,099 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 64 flow [2023-08-04 04:33:42,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-08-04 04:33:42,100 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2023-08-04 04:33:42,100 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 64 flow [2023-08-04 04:33:42,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:42,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:42,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:33:42,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:33:42,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:33:42,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:42,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1200748567, now seen corresponding path program 1 times [2023-08-04 04:33:42,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:42,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743769150] [2023-08-04 04:33:42,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:42,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:42,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:33:42,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:33:42,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743769150] [2023-08-04 04:33:42,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743769150] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:33:42,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428277778] [2023-08-04 04:33:42,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:42,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:33:42,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:33:42,149 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) [2023-08-04 04:33:42,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 04:33:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:42,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:33:42,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:33:42,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:33:42,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:33:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:33:42,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428277778] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:33:42,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:33:42,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:33:42,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898657356] [2023-08-04 04:33:42,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:33:42,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:33:42,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:33:42,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:33:42,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:33:42,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 130 [2023-08-04 04:33:42,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 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) [2023-08-04 04:33:42,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:33:42,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 130 [2023-08-04 04:33:42,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:33:42,332 INFO L124 PetriNetUnfolderBase]: 207/385 cut-off events. [2023-08-04 04:33:42,332 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-08-04 04:33:42,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 385 events. 207/385 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1742 event pairs, 28 based on Foata normal form. 4/387 useless extension candidates. Maximal degree in co-relation 215. Up to 256 conditions per place. [2023-08-04 04:33:42,335 INFO L140 encePairwiseOnDemand]: 126/130 looper letters, 25 selfloop transitions, 3 changer transitions 1/35 dead transitions. [2023-08-04 04:33:42,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 35 transitions, 146 flow [2023-08-04 04:33:42,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:33:42,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:33:42,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2023-08-04 04:33:42,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2023-08-04 04:33:42,336 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 310 transitions. [2023-08-04 04:33:42,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 310 transitions. [2023-08-04 04:33:42,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:33:42,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 310 transitions. [2023-08-04 04:33:42,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:42,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:42,339 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:42,339 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 64 flow. Second operand 4 states and 310 transitions. [2023-08-04 04:33:42,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 35 transitions, 146 flow [2023-08-04 04:33:42,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:33:42,341 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 76 flow [2023-08-04 04:33:42,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2023-08-04 04:33:42,342 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-08-04 04:33:42,342 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 76 flow [2023-08-04 04:33:42,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 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) [2023-08-04 04:33:42,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:42,342 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:33:42,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 04:33:42,546 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 [2023-08-04 04:33:42,546 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:33:42,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:42,547 INFO L85 PathProgramCache]: Analyzing trace with hash -796465083, now seen corresponding path program 1 times [2023-08-04 04:33:42,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:42,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573654145] [2023-08-04 04:33:42,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:42,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:42,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:33:42,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:33:42,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573654145] [2023-08-04 04:33:42,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573654145] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:33:42,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:33:42,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 04:33:42,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661017402] [2023-08-04 04:33:42,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:33:42,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:33:42,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:33:42,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:33:42,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:33:42,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 130 [2023-08-04 04:33:42,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:42,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:33:42,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 130 [2023-08-04 04:33:42,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:33:42,740 INFO L124 PetriNetUnfolderBase]: 334/648 cut-off events. [2023-08-04 04:33:42,740 INFO L125 PetriNetUnfolderBase]: For 405/405 co-relation queries the response was YES. [2023-08-04 04:33:42,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1482 conditions, 648 events. 334/648 cut-off events. For 405/405 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3107 event pairs, 221 based on Foata normal form. 29/676 useless extension candidates. Maximal degree in co-relation 600. Up to 422 conditions per place. [2023-08-04 04:33:42,745 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 32 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-08-04 04:33:42,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 206 flow [2023-08-04 04:33:42,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:33:42,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:33:42,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-08-04 04:33:42,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6307692307692307 [2023-08-04 04:33:42,748 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-08-04 04:33:42,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-08-04 04:33:42,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:33:42,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-08-04 04:33:42,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-08-04 04:33:42,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:42,750 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:42,750 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 76 flow. Second operand 3 states and 246 transitions. [2023-08-04 04:33:42,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 206 flow [2023-08-04 04:33:42,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 40 transitions, 194 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-04 04:33:42,755 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 107 flow [2023-08-04 04:33:42,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-08-04 04:33:42,756 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-08-04 04:33:42,756 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 107 flow [2023-08-04 04:33:42,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:42,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:42,757 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:33:42,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 04:33:42,759 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:33:42,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:42,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1657928773, now seen corresponding path program 1 times [2023-08-04 04:33:42,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:42,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832302850] [2023-08-04 04:33:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:42,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:33:42,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:33:42,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832302850] [2023-08-04 04:33:42,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832302850] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:33:42,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:33:42,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:33:42,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208050856] [2023-08-04 04:33:42,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:33:42,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:33:42,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:33:42,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:33:42,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:33:43,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 130 [2023-08-04 04:33:43,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 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) [2023-08-04 04:33:43,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:33:43,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 130 [2023-08-04 04:33:43,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:33:43,068 INFO L124 PetriNetUnfolderBase]: 31/146 cut-off events. [2023-08-04 04:33:43,068 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2023-08-04 04:33:43,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 146 events. 31/146 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 558 event pairs, 8 based on Foata normal form. 35/179 useless extension candidates. Maximal degree in co-relation 196. Up to 69 conditions per place. [2023-08-04 04:33:43,069 INFO L140 encePairwiseOnDemand]: 123/130 looper letters, 14 selfloop transitions, 7 changer transitions 0/27 dead transitions. [2023-08-04 04:33:43,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 27 transitions, 154 flow [2023-08-04 04:33:43,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:33:43,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:33:43,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 290 transitions. [2023-08-04 04:33:43,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2023-08-04 04:33:43,071 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 290 transitions. [2023-08-04 04:33:43,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 290 transitions. [2023-08-04 04:33:43,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:33:43,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 290 transitions. [2023-08-04 04:33:43,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:43,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:43,073 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:43,073 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 107 flow. Second operand 4 states and 290 transitions. [2023-08-04 04:33:43,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 27 transitions, 154 flow [2023-08-04 04:33:43,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 27 transitions, 139 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:33:43,075 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 90 flow [2023-08-04 04:33:43,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2023-08-04 04:33:43,076 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-08-04 04:33:43,076 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 90 flow [2023-08-04 04:33:43,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 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) [2023-08-04 04:33:43,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:43,076 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:33:43,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 04:33:43,077 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:33:43,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:43,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2092610565, now seen corresponding path program 2 times [2023-08-04 04:33:43,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:43,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329394720] [2023-08-04 04:33:43,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:43,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:43,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:33:43,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:33:43,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329394720] [2023-08-04 04:33:43,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329394720] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:33:43,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:33:43,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:33:43,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635457128] [2023-08-04 04:33:43,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:33:43,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:33:43,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:33:43,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:33:43,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:33:43,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 130 [2023-08-04 04:33:43,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:43,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:33:43,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 130 [2023-08-04 04:33:43,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:33:43,307 INFO L124 PetriNetUnfolderBase]: 31/121 cut-off events. [2023-08-04 04:33:43,307 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-08-04 04:33:43,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 121 events. 31/121 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 442 event pairs, 22 based on Foata normal form. 4/123 useless extension candidates. Maximal degree in co-relation 230. Up to 64 conditions per place. [2023-08-04 04:33:43,308 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-08-04 04:33:43,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 163 flow [2023-08-04 04:33:43,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:33:43,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:33:43,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 284 transitions. [2023-08-04 04:33:43,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461538461538461 [2023-08-04 04:33:43,309 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 284 transitions. [2023-08-04 04:33:43,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 284 transitions. [2023-08-04 04:33:43,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:33:43,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 284 transitions. [2023-08-04 04:33:43,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:43,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:43,311 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:43,311 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 90 flow. Second operand 4 states and 284 transitions. [2023-08-04 04:33:43,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 163 flow [2023-08-04 04:33:43,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 149 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:33:43,315 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2023-08-04 04:33:43,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2023-08-04 04:33:43,316 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-08-04 04:33:43,316 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2023-08-04 04:33:43,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:43,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 04:33:43,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 04:33:43,317 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-08-04 04:33:43,318 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 04:33:43,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 80 transitions, 172 flow [2023-08-04 04:33:43,329 INFO L124 PetriNetUnfolderBase]: 6/133 cut-off events. [2023-08-04 04:33:43,329 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:33:43,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 133 events. 6/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 252 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 93. Up to 6 conditions per place. [2023-08-04 04:33:43,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 80 transitions, 172 flow [2023-08-04 04:33:43,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 60 transitions, 132 flow [2023-08-04 04:33:43,330 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:33:43,331 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 60 transitions, 132 flow [2023-08-04 04:33:43,331 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 60 transitions, 132 flow [2023-08-04 04:33:43,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 60 transitions, 132 flow [2023-08-04 04:33:43,338 INFO L124 PetriNetUnfolderBase]: 0/73 cut-off events. [2023-08-04 04:33:43,338 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:33:43,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 0/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-08-04 04:33:43,339 INFO L119 LiptonReduction]: Number of co-enabled transitions 704 [2023-08-04 04:33:45,061 INFO L134 LiptonReduction]: Checked pairs total: 2041 [2023-08-04 04:33:45,061 INFO L136 LiptonReduction]: Total number of compositions: 45 [2023-08-04 04:33:45,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:33:45,063 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;@3327b844, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:33:45,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:33:45,065 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:33:45,065 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-04 04:33:45,065 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:33:45,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:45,065 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-08-04 04:33:45,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:33:45,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:45,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1310174561, now seen corresponding path program 1 times [2023-08-04 04:33:45,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:45,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773554498] [2023-08-04 04:33:45,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:45,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:45,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:33:45,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:33:45,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773554498] [2023-08-04 04:33:45,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773554498] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:33:45,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:33:45,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:33:45,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12534097] [2023-08-04 04:33:45,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:33:45,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:33:45,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:33:45,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:33:45,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:33:45,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 125 [2023-08-04 04:33:45,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:45,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:33:45,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 125 [2023-08-04 04:33:45,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:33:45,147 INFO L124 PetriNetUnfolderBase]: 18/63 cut-off events. [2023-08-04 04:33:45,148 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-04 04:33:45,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 63 events. 18/63 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 173 event pairs, 0 based on Foata normal form. 20/81 useless extension candidates. Maximal degree in co-relation 30. Up to 42 conditions per place. [2023-08-04 04:33:45,148 INFO L140 encePairwiseOnDemand]: 123/125 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-04 04:33:45,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 20 transitions, 76 flow [2023-08-04 04:33:45,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:33:45,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:33:45,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 299 transitions. [2023-08-04 04:33:45,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.598 [2023-08-04 04:33:45,150 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 299 transitions. [2023-08-04 04:33:45,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 299 transitions. [2023-08-04 04:33:45,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:33:45,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 299 transitions. [2023-08-04 04:33:45,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:45,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:45,153 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:45,153 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 48 flow. Second operand 4 states and 299 transitions. [2023-08-04 04:33:45,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 20 transitions, 76 flow [2023-08-04 04:33:45,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 20 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:33:45,154 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-08-04 04:33:45,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2023-08-04 04:33:45,155 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2023-08-04 04:33:45,155 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-08-04 04:33:45,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:33:45,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:33:45,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 04:33:45,156 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:33:45,156 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2023-08-04 04:33:45,156 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:33:45,156 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:33:45,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:33:45 BasicIcfg [2023-08-04 04:33:45,162 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:33:45,162 INFO L158 Benchmark]: Toolchain (without parser) took 10719.27ms. Allocated memory was 337.6MB in the beginning and 501.2MB in the end (delta: 163.6MB). Free memory was 280.7MB in the beginning and 206.1MB in the end (delta: 74.5MB). Peak memory consumption was 239.9MB. Max. memory is 16.0GB. [2023-08-04 04:33:45,162 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 337.6MB. Free memory was 291.2MB in the beginning and 291.0MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:33:45,163 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.51ms. Allocated memory is still 337.6MB. Free memory was 280.4MB in the beginning and 261.3MB in the end (delta: 19.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-04 04:33:45,163 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.98ms. Allocated memory is still 337.6MB. Free memory was 261.3MB in the beginning and 259.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:33:45,163 INFO L158 Benchmark]: Boogie Preprocessor took 48.38ms. Allocated memory is still 337.6MB. Free memory was 259.4MB in the beginning and 258.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:33:45,163 INFO L158 Benchmark]: RCFGBuilder took 342.63ms. Allocated memory was 337.6MB in the beginning and 501.2MB in the end (delta: 163.6MB). Free memory was 258.0MB in the beginning and 459.6MB in the end (delta: -201.7MB). Peak memory consumption was 8.6MB. Max. memory is 16.0GB. [2023-08-04 04:33:45,164 INFO L158 Benchmark]: TraceAbstraction took 9872.64ms. Allocated memory is still 501.2MB. Free memory was 459.6MB in the beginning and 206.1MB in the end (delta: 253.5MB). Peak memory consumption was 252.3MB. Max. memory is 16.0GB. [2023-08-04 04:33:45,165 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 337.6MB. Free memory was 291.2MB in the beginning and 291.0MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 402.51ms. Allocated memory is still 337.6MB. Free memory was 280.4MB in the beginning and 261.3MB in the end (delta: 19.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.98ms. Allocated memory is still 337.6MB. Free memory was 261.3MB in the beginning and 259.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 48.38ms. Allocated memory is still 337.6MB. Free memory was 259.4MB in the beginning and 258.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 342.63ms. Allocated memory was 337.6MB in the beginning and 501.2MB in the end (delta: 163.6MB). Free memory was 258.0MB in the beginning and 459.6MB in the end (delta: -201.7MB). Peak memory consumption was 8.6MB. Max. memory is 16.0GB. * TraceAbstraction took 9872.64ms. Allocated memory is still 501.2MB. Free memory was 459.6MB in the beginning and 206.1MB in the end (delta: 253.5MB). Peak memory consumption was 252.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 61 PlacesBefore, 17 PlacesAfterwards, 59 TransitionsBefore, 14 TransitionsAfterwards, 462 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 46 TotalNumberOfCompositions, 908 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 587, independent: 504, independent conditional: 0, independent unconditional: 504, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 249, independent: 232, independent conditional: 0, independent unconditional: 232, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 587, independent: 272, independent conditional: 0, independent unconditional: 272, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 249, unknown conditional: 0, unknown unconditional: 249] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 51 PlacesBefore, 8 PlacesAfterwards, 48 TransitionsBefore, 5 TransitionsAfterwards, 220 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 46 TotalNumberOfCompositions, 154 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 154, independent: 154, independent conditional: 0, independent unconditional: 154, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 116, independent: 116, independent conditional: 0, independent unconditional: 116, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 154, independent: 38, independent conditional: 0, independent unconditional: 38, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 116, unknown conditional: 0, unknown unconditional: 116] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 75 PlacesBefore, 27 PlacesAfterwards, 71 TransitionsBefore, 22 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 50 TotalNumberOfCompositions, 3280 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1219, independent: 1053, independent conditional: 0, independent unconditional: 1053, dependent: 166, dependent conditional: 0, dependent unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 543, independent: 513, independent conditional: 0, independent unconditional: 513, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1219, independent: 540, independent conditional: 0, independent unconditional: 540, dependent: 136, dependent conditional: 0, dependent unconditional: 136, unknown: 543, unknown conditional: 0, unknown unconditional: 543] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 65 PlacesBefore, 23 PlacesAfterwards, 60 TransitionsBefore, 18 TransitionsAfterwards, 704 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 45 TotalNumberOfCompositions, 2041 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 812, independent: 682, independent conditional: 0, independent unconditional: 682, dependent: 130, dependent conditional: 0, dependent unconditional: 130, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 342, independent: 324, independent conditional: 0, independent unconditional: 324, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 812, independent: 358, independent conditional: 0, independent unconditional: 358, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 342, unknown conditional: 0, unknown unconditional: 342] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 79 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71 IncrementalHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 7 mSDtfsCounter, 71 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=1, InterpolantAutomatonStates: 7, 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, 0.3s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 51 SizeOfPredicates, 0 NumberOfNonLiveVariables, 116 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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 4 procedures, 91 locations, 2 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: 3.1s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 203 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 114 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 344 IncrementalHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 10 mSDtfsCounter, 344 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=3, InterpolantAutomatonStates: 18, 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, 0.5s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 370 SizeOfPredicates, 0 NumberOfNonLiveVariables, 117 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 18/21 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 for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 79 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.0s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 91 locations, 2 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: 1.8s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 5/5 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-04 04:33:45,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...