/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_41-traces-ex-7_unknown_1_pos_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:02:41,791 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:02:41,841 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:02:41,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:02:41,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:02:41,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:02:41,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:02:41,866 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:02:41,867 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:02:41,867 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:02:41,868 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:02:41,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:02:41,868 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:02:41,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:02:41,869 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:02:41,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:02:41,870 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:02:41,870 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:02:41,870 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:02:41,870 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:02:41,871 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:02:41,874 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:02:41,874 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:02:41,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:02:41,878 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:02:41,878 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:02:41,878 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:02:41,878 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:02:41,879 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:02:41,879 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:02:41,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:02:41,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:02:41,880 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:02:41,880 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:02:41,880 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:02:41,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:02:41,881 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:02:41,881 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:02:41,881 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:02:41,881 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:02:41,881 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:02:41,882 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:02:42,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:02:42,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:02:42,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:02:42,094 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:02:42,094 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:02:42,095 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_41-traces-ex-7_unknown_1_pos_bound2.i [2023-08-03 16:02:43,258 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:02:43,470 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:02:43,470 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_41-traces-ex-7_unknown_1_pos_bound2.i [2023-08-03 16:02:43,483 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ebb24d4e/7c734ab1ae9147f2ac54c941bca241ec/FLAG115269fb2 [2023-08-03 16:02:43,497 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ebb24d4e/7c734ab1ae9147f2ac54c941bca241ec [2023-08-03 16:02:43,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:02:43,500 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:02:43,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:02:43,501 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:02:43,509 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:02:43,509 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:02:43" (1/1) ... [2023-08-03 16:02:43,510 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1624ccfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:43, skipping insertion in model container [2023-08-03 16:02:43,510 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:02:43" (1/1) ... [2023-08-03 16:02:43,544 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:02:43,699 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_41-traces-ex-7_unknown_1_pos_bound2.i[1097,1110] [2023-08-03 16:02:43,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:02:43,851 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:02:43,864 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_41-traces-ex-7_unknown_1_pos_bound2.i[1097,1110] [2023-08-03 16:02:43,876 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-03 16:02:43,878 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 16:02:43,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:02:43,923 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:02:43,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:43 WrapperNode [2023-08-03 16:02:43,924 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:02:43,925 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:02:43,925 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:02:43,925 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:02:43,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:43" (1/1) ... [2023-08-03 16:02:43,940 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:43" (1/1) ... [2023-08-03 16:02:43,955 INFO L138 Inliner]: procedures = 162, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2023-08-03 16:02:43,955 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:02:43,956 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:02:43,956 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:02:43,956 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:02:43,962 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:43" (1/1) ... [2023-08-03 16:02:43,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:43" (1/1) ... [2023-08-03 16:02:43,965 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:43" (1/1) ... [2023-08-03 16:02:43,965 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:43" (1/1) ... [2023-08-03 16:02:43,970 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:43" (1/1) ... [2023-08-03 16:02:43,972 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:43" (1/1) ... [2023-08-03 16:02:43,973 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:43" (1/1) ... [2023-08-03 16:02:43,974 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:43" (1/1) ... [2023-08-03 16:02:43,976 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:02:43,978 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:02:43,978 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:02:43,978 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:02:43,978 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:43" (1/1) ... [2023-08-03 16:02:43,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:02:43,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:02:44,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 16:02:44,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 16:02:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:02:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:02:44,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:02:44,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:02:44,041 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 16:02:44,041 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 16:02:44,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:02:44,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:02:44,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:02:44,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:02:44,044 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 16:02:44,189 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:02:44,191 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:02:44,350 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:02:44,355 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:02:44,356 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-03 16:02:44,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:02:44 BoogieIcfgContainer [2023-08-03 16:02:44,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:02:44,359 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:02:44,359 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:02:44,362 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:02:44,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:02:43" (1/3) ... [2023-08-03 16:02:44,362 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b12b1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:02:44, skipping insertion in model container [2023-08-03 16:02:44,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:43" (2/3) ... [2023-08-03 16:02:44,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b12b1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:02:44, skipping insertion in model container [2023-08-03 16:02:44,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:02:44" (3/3) ... [2023-08-03 16:02:44,364 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_41-traces-ex-7_unknown_1_pos_bound2.i [2023-08-03 16:02:44,370 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:02:44,378 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:02:44,378 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 16:02:44,378 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:02:44,409 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:02:44,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 139 flow [2023-08-03 16:02:44,471 INFO L124 PetriNetUnfolderBase]: 4/91 cut-off events. [2023-08-03 16:02:44,472 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:44,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 4/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 131 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2023-08-03 16:02:44,475 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 67 transitions, 139 flow [2023-08-03 16:02:44,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 59 transitions, 123 flow [2023-08-03 16:02:44,482 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:02:44,490 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 59 transitions, 123 flow [2023-08-03 16:02:44,491 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 59 transitions, 123 flow [2023-08-03 16:02:44,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 59 transitions, 123 flow [2023-08-03 16:02:44,509 INFO L124 PetriNetUnfolderBase]: 2/75 cut-off events. [2023-08-03 16:02:44,509 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:44,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 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 78 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. [2023-08-03 16:02:44,511 INFO L119 LiptonReduction]: Number of co-enabled transitions 440 [2023-08-03 16:02:46,386 INFO L134 LiptonReduction]: Checked pairs total: 947 [2023-08-03 16:02:46,387 INFO L136 LiptonReduction]: Total number of compositions: 46 [2023-08-03 16:02:46,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:02:46,403 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;@643155a3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:02:46,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:02:46,407 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:02:46,407 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-03 16:02:46,407 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:46,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:46,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 16:02:46,408 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:46,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:46,412 INFO L85 PathProgramCache]: Analyzing trace with hash 223642910, now seen corresponding path program 1 times [2023-08-03 16:02:46,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:46,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728944437] [2023-08-03 16:02:46,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:46,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:46,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:46,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:46,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728944437] [2023-08-03 16:02:46,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728944437] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:46,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:46,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:02:46,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470048334] [2023-08-03 16:02:46,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:46,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:02:46,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:46,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:02:46,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:02:46,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 113 [2023-08-03 16:02:46,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 33 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:46,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:46,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 113 [2023-08-03 16:02:46,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:46,719 INFO L124 PetriNetUnfolderBase]: 18/54 cut-off events. [2023-08-03 16:02:46,719 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:46,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 54 events. 18/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 165 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 92. Up to 43 conditions per place. [2023-08-03 16:02:46,721 INFO L140 encePairwiseOnDemand]: 110/113 looper letters, 13 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-08-03 16:02:46,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 18 transitions, 71 flow [2023-08-03 16:02:46,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:02:46,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:02:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-08-03 16:02:46,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5693215339233039 [2023-08-03 16:02:46,737 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-08-03 16:02:46,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-08-03 16:02:46,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:46,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-08-03 16:02:46,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:46,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:46,751 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:46,753 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 33 flow. Second operand 3 states and 193 transitions. [2023-08-03 16:02:46,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 18 transitions, 71 flow [2023-08-03 16:02:46,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 71 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:02:46,756 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 41 flow [2023-08-03 16:02:46,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=33, 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=41, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-03 16:02:46,762 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 3 predicate places. [2023-08-03 16:02:46,762 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 41 flow [2023-08-03 16:02:46,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:46,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:46,763 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:02:46,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:02:46,763 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:46,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:46,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1648431267, now seen corresponding path program 1 times [2023-08-03 16:02:46,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:46,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536011815] [2023-08-03 16:02:46,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:46,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:02:46,803 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:02:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:02:46,865 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:02:46,865 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:02:46,866 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 16:02:46,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-03 16:02:46,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:02:46,868 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 16:02:46,871 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:02:46,871 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:02:46,893 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:02:46,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 78 transitions, 168 flow [2023-08-03 16:02:46,930 INFO L124 PetriNetUnfolderBase]: 6/131 cut-off events. [2023-08-03 16:02:46,930 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:02:46,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 131 events. 6/131 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 242 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2023-08-03 16:02:46,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 78 transitions, 168 flow [2023-08-03 16:02:46,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 70 transitions, 152 flow [2023-08-03 16:02:46,932 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:02:46,932 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 70 transitions, 152 flow [2023-08-03 16:02:46,932 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 70 transitions, 152 flow [2023-08-03 16:02:46,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 70 transitions, 152 flow [2023-08-03 16:02:46,963 INFO L124 PetriNetUnfolderBase]: 3/107 cut-off events. [2023-08-03 16:02:46,963 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:02:46,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 107 events. 3/107 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 146 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2023-08-03 16:02:46,965 INFO L119 LiptonReduction]: Number of co-enabled transitions 1100 [2023-08-03 16:02:48,733 INFO L134 LiptonReduction]: Checked pairs total: 2724 [2023-08-03 16:02:48,733 INFO L136 LiptonReduction]: Total number of compositions: 50 [2023-08-03 16:02:48,735 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:02:48,736 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;@643155a3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:02:48,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:02:48,737 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:02:48,737 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-03 16:02:48,738 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:48,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:48,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 16:02:48,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:48,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:48,738 INFO L85 PathProgramCache]: Analyzing trace with hash 356291245, now seen corresponding path program 1 times [2023-08-03 16:02:48,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:48,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147114863] [2023-08-03 16:02:48,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:48,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:48,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:48,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147114863] [2023-08-03 16:02:48,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147114863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:48,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:48,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:02:48,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731974318] [2023-08-03 16:02:48,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:48,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:02:48,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:48,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:02:48,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:02:48,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 128 [2023-08-03 16:02:48,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:48,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:48,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 128 [2023-08-03 16:02:48,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:48,848 INFO L124 PetriNetUnfolderBase]: 219/428 cut-off events. [2023-08-03 16:02:48,849 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 16:02:48,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 428 events. 219/428 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1967 event pairs, 96 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 196. Up to 384 conditions per place. [2023-08-03 16:02:48,852 INFO L140 encePairwiseOnDemand]: 125/128 looper letters, 19 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-08-03 16:02:48,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 26 transitions, 106 flow [2023-08-03 16:02:48,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:02:48,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:02:48,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-08-03 16:02:48,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5963541666666666 [2023-08-03 16:02:48,855 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-08-03 16:02:48,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-08-03 16:02:48,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:48,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-08-03 16:02:48,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:48,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:48,858 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:48,858 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 3 states and 229 transitions. [2023-08-03 16:02:48,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 26 transitions, 106 flow [2023-08-03 16:02:48,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 104 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 16:02:48,859 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 64 flow [2023-08-03 16:02:48,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-08-03 16:02:48,860 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-03 16:02:48,860 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 64 flow [2023-08-03 16:02:48,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:48,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:48,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:48,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 16:02:48,861 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:48,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:48,861 INFO L85 PathProgramCache]: Analyzing trace with hash -544302196, now seen corresponding path program 1 times [2023-08-03 16:02:48,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:48,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505267324] [2023-08-03 16:02:48,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:48,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:48,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:48,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:48,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505267324] [2023-08-03 16:02:48,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505267324] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:02:48,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546103670] [2023-08-03 16:02:48,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:48,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:48,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:02:48,918 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:02:48,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 16:02:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:48,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:02:48,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:02:49,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:49,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:02:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:49,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546103670] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:02:49,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:02:49,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:02:49,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884503456] [2023-08-03 16:02:49,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:02:49,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:02:49,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:49,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:02:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:02:49,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 128 [2023-08-03 16:02:49,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:49,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:49,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 128 [2023-08-03 16:02:49,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:49,131 INFO L124 PetriNetUnfolderBase]: 207/380 cut-off events. [2023-08-03 16:02:49,131 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-03 16:02:49,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 380 events. 207/380 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1642 event pairs, 16 based on Foata normal form. 4/384 useless extension candidates. Maximal degree in co-relation 214. Up to 256 conditions per place. [2023-08-03 16:02:49,134 INFO L140 encePairwiseOnDemand]: 124/128 looper letters, 25 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2023-08-03 16:02:49,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 34 transitions, 146 flow [2023-08-03 16:02:49,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:02:49,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:02:49,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 302 transitions. [2023-08-03 16:02:49,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58984375 [2023-08-03 16:02:49,136 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 302 transitions. [2023-08-03 16:02:49,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 302 transitions. [2023-08-03 16:02:49,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:49,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 302 transitions. [2023-08-03 16:02:49,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:49,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:49,140 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:49,140 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 64 flow. Second operand 4 states and 302 transitions. [2023-08-03 16:02:49,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 34 transitions, 146 flow [2023-08-03 16:02:49,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 34 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:02:49,142 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 82 flow [2023-08-03 16:02:49,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-08-03 16:02:49,145 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-08-03 16:02:49,145 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 82 flow [2023-08-03 16:02:49,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:49,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:49,146 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:02:49,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 16:02:49,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:49,358 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:49,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:49,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1085522479, now seen corresponding path program 1 times [2023-08-03 16:02:49,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:49,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607346894] [2023-08-03 16:02:49,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:49,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:49,441 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:49,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:49,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607346894] [2023-08-03 16:02:49,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607346894] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:02:49,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780205594] [2023-08-03 16:02:49,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:49,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:49,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:02:49,447 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:02:49,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 16:02:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:49,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:02:49,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:02:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:49,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:02:49,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780205594] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:49,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:02:49,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:02:49,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508995459] [2023-08-03 16:02:49,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:49,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:02:49,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:49,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:02:49,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:02:49,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 128 [2023-08-03 16:02:49,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:49,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:49,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 128 [2023-08-03 16:02:49,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:49,636 INFO L124 PetriNetUnfolderBase]: 176/321 cut-off events. [2023-08-03 16:02:49,636 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-08-03 16:02:49,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 321 events. 176/321 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1287 event pairs, 6 based on Foata normal form. 20/341 useless extension candidates. Maximal degree in co-relation 187. Up to 255 conditions per place. [2023-08-03 16:02:49,639 INFO L140 encePairwiseOnDemand]: 125/128 looper letters, 25 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-08-03 16:02:49,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 152 flow [2023-08-03 16:02:49,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:02:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:02:49,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 369 transitions. [2023-08-03 16:02:49,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5765625 [2023-08-03 16:02:49,641 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 369 transitions. [2023-08-03 16:02:49,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 369 transitions. [2023-08-03 16:02:49,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:49,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 369 transitions. [2023-08-03 16:02:49,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:49,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:49,644 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:49,644 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 82 flow. Second operand 5 states and 369 transitions. [2023-08-03 16:02:49,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 152 flow [2023-08-03 16:02:49,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 145 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 16:02:49,651 INFO L231 Difference]: Finished difference. Result has 33 places, 21 transitions, 71 flow [2023-08-03 16:02:49,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=71, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2023-08-03 16:02:49,653 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-08-03 16:02:49,654 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 71 flow [2023-08-03 16:02:49,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:49,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:49,654 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:49,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 16:02:49,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:49,863 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:49,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:49,864 INFO L85 PathProgramCache]: Analyzing trace with hash -490121172, now seen corresponding path program 1 times [2023-08-03 16:02:49,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:49,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790268899] [2023-08-03 16:02:49,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:49,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:49,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:02:49,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:49,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790268899] [2023-08-03 16:02:49,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790268899] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:49,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:49,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 16:02:49,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145457719] [2023-08-03 16:02:49,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:49,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:02:49,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:49,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:02:49,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:02:49,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 128 [2023-08-03 16:02:49,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 71 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) [2023-08-03 16:02:49,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:49,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 128 [2023-08-03 16:02:49,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:49,996 INFO L124 PetriNetUnfolderBase]: 210/415 cut-off events. [2023-08-03 16:02:49,996 INFO L125 PetriNetUnfolderBase]: For 254/254 co-relation queries the response was YES. [2023-08-03 16:02:49,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 415 events. 210/415 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1800 event pairs, 80 based on Foata normal form. 9/424 useless extension candidates. Maximal degree in co-relation 487. Up to 255 conditions per place. [2023-08-03 16:02:49,998 INFO L140 encePairwiseOnDemand]: 124/128 looper letters, 28 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-08-03 16:02:49,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 180 flow [2023-08-03 16:02:49,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:02:49,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:02:49,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2023-08-03 16:02:49,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2023-08-03 16:02:50,000 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2023-08-03 16:02:50,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2023-08-03 16:02:50,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:50,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2023-08-03 16:02:50,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:50,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:50,002 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:50,002 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 71 flow. Second operand 3 states and 240 transitions. [2023-08-03 16:02:50,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 180 flow [2023-08-03 16:02:50,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:02:50,004 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 85 flow [2023-08-03 16:02:50,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-08-03 16:02:50,007 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-08-03 16:02:50,007 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 85 flow [2023-08-03 16:02:50,007 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) [2023-08-03 16:02:50,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:50,007 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:50,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 16:02:50,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:50,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:50,008 INFO L85 PathProgramCache]: Analyzing trace with hash 908471008, now seen corresponding path program 1 times [2023-08-03 16:02:50,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:50,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353729340] [2023-08-03 16:02:50,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:50,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:02:50,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:50,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353729340] [2023-08-03 16:02:50,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353729340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:50,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:50,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:02:50,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543819846] [2023-08-03 16:02:50,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:50,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 16:02:50,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:50,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 16:02:50,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 16:02:50,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 128 [2023-08-03 16:02:50,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:50,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:50,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 128 [2023-08-03 16:02:50,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:50,239 INFO L124 PetriNetUnfolderBase]: 38/140 cut-off events. [2023-08-03 16:02:50,241 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-08-03 16:02:50,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 140 events. 38/140 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 514 event pairs, 15 based on Foata normal form. 35/175 useless extension candidates. Maximal degree in co-relation 190. Up to 73 conditions per place. [2023-08-03 16:02:50,243 INFO L140 encePairwiseOnDemand]: 121/128 looper letters, 16 selfloop transitions, 7 changer transitions 0/28 dead transitions. [2023-08-03 16:02:50,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 157 flow [2023-08-03 16:02:50,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:02:50,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:02:50,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 283 transitions. [2023-08-03 16:02:50,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552734375 [2023-08-03 16:02:50,245 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 283 transitions. [2023-08-03 16:02:50,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 283 transitions. [2023-08-03 16:02:50,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:50,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 283 transitions. [2023-08-03 16:02:50,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:50,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:50,248 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:50,248 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 85 flow. Second operand 4 states and 283 transitions. [2023-08-03 16:02:50,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 157 flow [2023-08-03 16:02:50,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:02:50,249 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 96 flow [2023-08-03 16:02:50,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=82, 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=96, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2023-08-03 16:02:50,251 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2023-08-03 16:02:50,251 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 96 flow [2023-08-03 16:02:50,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:50,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:50,251 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:50,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 16:02:50,253 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:50,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:50,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1688223968, now seen corresponding path program 2 times [2023-08-03 16:02:50,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:50,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23721441] [2023-08-03 16:02:50,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:50,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:50,337 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:02:50,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:50,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23721441] [2023-08-03 16:02:50,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23721441] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:50,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:50,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:02:50,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326487808] [2023-08-03 16:02:50,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:50,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:02:50,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:50,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:02:50,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:02:50,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 128 [2023-08-03 16:02:50,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:50,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:50,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 128 [2023-08-03 16:02:50,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:50,438 INFO L124 PetriNetUnfolderBase]: 33/118 cut-off events. [2023-08-03 16:02:50,438 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-08-03 16:02:50,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 118 events. 33/118 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 403 event pairs, 22 based on Foata normal form. 6/124 useless extension candidates. Maximal degree in co-relation 239. Up to 64 conditions per place. [2023-08-03 16:02:50,439 INFO L140 encePairwiseOnDemand]: 122/128 looper letters, 20 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2023-08-03 16:02:50,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 178 flow [2023-08-03 16:02:50,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:02:50,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:02:50,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2023-08-03 16:02:50,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541015625 [2023-08-03 16:02:50,443 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 277 transitions. [2023-08-03 16:02:50,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 277 transitions. [2023-08-03 16:02:50,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:50,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 277 transitions. [2023-08-03 16:02:50,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:50,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:50,445 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:50,446 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 96 flow. Second operand 4 states and 277 transitions. [2023-08-03 16:02:50,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 178 flow [2023-08-03 16:02:50,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 169 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 16:02:50,449 INFO L231 Difference]: Finished difference. Result has 36 places, 23 transitions, 101 flow [2023-08-03 16:02:50,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2023-08-03 16:02:50,450 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-08-03 16:02:50,450 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 101 flow [2023-08-03 16:02:50,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:50,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:50,451 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:50,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 16:02:50,451 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:50,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:50,452 INFO L85 PathProgramCache]: Analyzing trace with hash -903699638, now seen corresponding path program 1 times [2023-08-03 16:02:50,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:50,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90114611] [2023-08-03 16:02:50,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:50,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:02:50,474 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:02:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:02:50,496 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:02:50,496 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:02:50,496 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-03 16:02:50,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 16:02:50,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 16:02:50,497 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-08-03 16:02:50,500 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:02:50,500 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:02:50,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:02:50 BasicIcfg [2023-08-03 16:02:50,545 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:02:50,545 INFO L158 Benchmark]: Toolchain (without parser) took 7045.41ms. Allocated memory was 362.8MB in the beginning and 578.8MB in the end (delta: 216.0MB). Free memory was 306.2MB in the beginning and 289.7MB in the end (delta: 16.5MB). Peak memory consumption was 234.3MB. Max. memory is 16.0GB. [2023-08-03 16:02:50,545 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 362.8MB. Free memory is still 315.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:02:50,546 INFO L158 Benchmark]: CACSL2BoogieTranslator took 423.17ms. Allocated memory is still 362.8MB. Free memory was 305.9MB in the beginning and 287.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 16:02:50,546 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.79ms. Allocated memory is still 362.8MB. Free memory was 287.0MB in the beginning and 284.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:02:50,546 INFO L158 Benchmark]: Boogie Preprocessor took 20.07ms. Allocated memory is still 362.8MB. Free memory was 284.9MB in the beginning and 283.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:02:50,546 INFO L158 Benchmark]: RCFGBuilder took 379.74ms. Allocated memory was 362.8MB in the beginning and 578.8MB in the end (delta: 216.0MB). Free memory was 283.4MB in the beginning and 537.6MB in the end (delta: -254.2MB). Peak memory consumption was 13.6MB. Max. memory is 16.0GB. [2023-08-03 16:02:50,547 INFO L158 Benchmark]: TraceAbstraction took 6185.71ms. Allocated memory is still 578.8MB. Free memory was 536.6MB in the beginning and 289.7MB in the end (delta: 246.9MB). Peak memory consumption was 245.8MB. Max. memory is 16.0GB. [2023-08-03 16:02:50,548 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 362.8MB. Free memory is still 315.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 423.17ms. Allocated memory is still 362.8MB. Free memory was 305.9MB in the beginning and 287.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 30.79ms. Allocated memory is still 362.8MB. Free memory was 287.0MB in the beginning and 284.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.07ms. Allocated memory is still 362.8MB. Free memory was 284.9MB in the beginning and 283.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 379.74ms. Allocated memory was 362.8MB in the beginning and 578.8MB in the end (delta: 216.0MB). Free memory was 283.4MB in the beginning and 537.6MB in the end (delta: -254.2MB). Peak memory consumption was 13.6MB. Max. memory is 16.0GB. * TraceAbstraction took 6185.71ms. Allocated memory is still 578.8MB. Free memory was 536.6MB in the beginning and 289.7MB in the end (delta: 246.9MB). Peak memory consumption was 245.8MB. 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, 440 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 46 TotalNumberOfCompositions, 947 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 553, independent: 465, independent conditional: 0, independent unconditional: 465, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 232, independent: 215, independent conditional: 0, independent unconditional: 215, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 553, independent: 250, independent conditional: 0, independent unconditional: 250, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 232, unknown conditional: 0, unknown unconditional: 232] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 74 PlacesBefore, 26 PlacesAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1100 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 50 TotalNumberOfCompositions, 2724 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1093, independent: 955, independent conditional: 0, independent unconditional: 955, dependent: 138, dependent conditional: 0, dependent unconditional: 138, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 511, independent: 486, independent conditional: 0, independent unconditional: 486, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1093, independent: 469, independent conditional: 0, independent unconditional: 469, dependent: 113, dependent conditional: 0, dependent unconditional: 113, unknown: 511, unknown conditional: 0, unknown unconditional: 511] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L681] 0 int g = 0; [L682] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t D = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L693] 0 pthread_t id[2]; [L694] 0 int asdf=0; VAL [A={3:0}, D={4:0}, asdf=0, g=0, id={5:0}] [L694] COND TRUE 0 asdf<2 [L694] FCALL, FORK 0 pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, D={4:0}, arg={0:0}, asdf=0, g=0, id={5:0}, pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0))=-2] [L694] 0 asdf++ VAL [A={3:0}, D={4:0}, arg={0:0}, asdf=1, g=0, id={5:0}] [L694] COND TRUE 0 asdf<2 [L687] 1 g = 17 VAL [A={3:0}, D={4:0}, arg={0:0}, arg={0:0}, g=17] [L694] FCALL, FORK 0 pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, D={4:0}, arg={0:0}, arg={0:0}, asdf=1, g=17, id={5:0}, pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0))=-1] [L694] 0 asdf++ VAL [A={3:0}, D={4:0}, arg={0:0}, arg={0:0}, asdf=2, g=17, id={5:0}] [L690] 1 return ((void *)0); [L694] COND FALSE 0 !(asdf<2) [L698] CALL 0 __VERIFIER_assert(g == 0) [L19] COND TRUE 0 !(cond) [L19] 0 reach_error() VAL [A={3:0}, D={4:0}, \old(cond)=0, \result={0:0}, arg={0:0}, arg={0:0}, cond=0, g=17] - UnprovableResult [Line: 694]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 77 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: 2.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28 IncrementalHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 28 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 88 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: 3.6s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 274 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 170 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 412 IncrementalHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 13 mSDtfsCounter, 412 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=6, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 313 SizeOfPredicates, 0 NumberOfNonLiveVariables, 235 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 29/37 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-03 16:02:50,579 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...