/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_19-publish-precision_unknown_2_pos_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:00:48,271 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:00:48,344 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:00:48,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:00:48,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:00:48,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:00:48,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:00:48,375 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:00:48,377 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:00:48,380 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:00:48,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:00:48,381 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:00:48,382 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:00:48,383 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:00:48,383 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:00:48,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:00:48,383 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:00:48,384 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:00:48,384 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:00:48,384 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:00:48,384 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:00:48,385 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:00:48,385 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:00:48,385 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:00:48,386 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:00:48,386 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:00:48,386 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:00:48,387 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:00:48,387 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:00:48,387 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:00:48,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:00:48,388 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:00:48,388 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:00:48,388 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:00:48,389 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:00:48,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:00:48,389 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:00:48,389 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:00:48,389 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:00:48,389 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:00:48,390 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:00:48,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:00:48,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:00:48,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:00:48,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:00:48,631 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:00:48,632 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:00:48,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_19-publish-precision_unknown_2_pos_bound2.i [2023-08-03 16:00:49,801 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:00:49,998 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:00:49,999 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_19-publish-precision_unknown_2_pos_bound2.i [2023-08-03 16:00:50,013 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d322ee4cf/1143a0ee9da849e3bd248f6ed720f32e/FLAGe639a234d [2023-08-03 16:00:50,024 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d322ee4cf/1143a0ee9da849e3bd248f6ed720f32e [2023-08-03 16:00:50,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:00:50,027 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:00:50,028 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:00:50,028 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:00:50,031 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:00:50,031 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:00:50" (1/1) ... [2023-08-03 16:00:50,032 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a7775f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:50, skipping insertion in model container [2023-08-03 16:00:50,032 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:00:50" (1/1) ... [2023-08-03 16:00:50,067 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:00:50,207 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_19-publish-precision_unknown_2_pos_bound2.i[1103,1116] [2023-08-03 16:00:50,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:00:50,325 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:00:50,335 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_19-publish-precision_unknown_2_pos_bound2.i[1103,1116] [2023-08-03 16:00:50,342 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-03 16:00:50,343 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 16:00:50,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:00:50,386 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:00:50,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:50 WrapperNode [2023-08-03 16:00:50,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:00:50,387 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:00:50,387 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:00:50,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:00:50,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:50" (1/1) ... [2023-08-03 16:00:50,403 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:50" (1/1) ... [2023-08-03 16:00:50,419 INFO L138 Inliner]: procedures = 162, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2023-08-03 16:00:50,420 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:00:50,420 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:00:50,420 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:00:50,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:00:50,427 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:50" (1/1) ... [2023-08-03 16:00:50,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:50" (1/1) ... [2023-08-03 16:00:50,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:50" (1/1) ... [2023-08-03 16:00:50,430 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:50" (1/1) ... [2023-08-03 16:00:50,434 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:50" (1/1) ... [2023-08-03 16:00:50,437 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:50" (1/1) ... [2023-08-03 16:00:50,438 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:50" (1/1) ... [2023-08-03 16:00:50,439 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:50" (1/1) ... [2023-08-03 16:00:50,441 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:00:50,441 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:00:50,442 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:00:50,442 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:00:50,442 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:50" (1/1) ... [2023-08-03 16:00:50,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:00:50,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:00:50,470 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 16:00:50,497 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 16:00:50,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 16:00:50,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:00:50,513 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:00:50,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:00:50,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:00:50,514 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 16:00:50,514 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 16:00:50,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:00:50,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:00:50,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:00:50,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:00:50,517 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 16:00:50,636 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:00:50,637 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:00:50,768 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:00:50,774 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:00:50,774 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 16:00:50,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:00:50 BoogieIcfgContainer [2023-08-03 16:00:50,778 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:00:50,780 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:00:50,780 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:00:50,783 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:00:50,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:00:50" (1/3) ... [2023-08-03 16:00:50,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1f100e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:00:50, skipping insertion in model container [2023-08-03 16:00:50,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:00:50" (2/3) ... [2023-08-03 16:00:50,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1f100e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:00:50, skipping insertion in model container [2023-08-03 16:00:50,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:00:50" (3/3) ... [2023-08-03 16:00:50,785 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_19-publish-precision_unknown_2_pos_bound2.i [2023-08-03 16:00:50,792 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:00:50,799 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:00:50,800 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 16:00:50,800 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:00:50,844 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 16:00:50,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 79 transitions, 166 flow [2023-08-03 16:00:50,914 INFO L124 PetriNetUnfolderBase]: 7/106 cut-off events. [2023-08-03 16:00:50,914 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 16:00:50,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 106 events. 7/106 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 169 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2023-08-03 16:00:50,918 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 79 transitions, 166 flow [2023-08-03 16:00:50,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 60 transitions, 125 flow [2023-08-03 16:00:50,924 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:00:50,932 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 60 transitions, 125 flow [2023-08-03 16:00:50,935 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 60 transitions, 125 flow [2023-08-03 16:00:50,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 60 transitions, 125 flow [2023-08-03 16:00:50,953 INFO L124 PetriNetUnfolderBase]: 2/73 cut-off events. [2023-08-03 16:00:50,953 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:00:50,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 39. Up to 4 conditions per place. [2023-08-03 16:00:50,955 INFO L119 LiptonReduction]: Number of co-enabled transitions 532 [2023-08-03 16:00:52,908 INFO L134 LiptonReduction]: Checked pairs total: 1212 [2023-08-03 16:00:52,908 INFO L136 LiptonReduction]: Total number of compositions: 46 [2023-08-03 16:00:52,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:00:52,926 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;@7cc81c0d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:00:52,926 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:00:52,929 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:00:52,929 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-03 16:00:52,929 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:00:52,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:00:52,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-03 16:00:52,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:00:52,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:00:52,935 INFO L85 PathProgramCache]: Analyzing trace with hash 270432, now seen corresponding path program 1 times [2023-08-03 16:00:52,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:00:52,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912747657] [2023-08-03 16:00:52,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:52,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:00:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:53,120 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 16:00:53,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:00:53,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912747657] [2023-08-03 16:00:53,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912747657] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:00:53,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:00:53,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:00:53,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808611340] [2023-08-03 16:00:53,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:00:53,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:00:53,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:00:53,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:00:53,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:00:53,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 125 [2023-08-03 16:00:53,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 15 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states 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 16:00:53,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:00:53,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 125 [2023-08-03 16:00:53,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:00:53,232 INFO L124 PetriNetUnfolderBase]: 16/52 cut-off events. [2023-08-03 16:00:53,232 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:00:53,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 52 events. 16/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 151 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 84. Up to 37 conditions per place. [2023-08-03 16:00:53,234 INFO L140 encePairwiseOnDemand]: 122/125 looper letters, 13 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-08-03 16:00:53,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 20 transitions, 75 flow [2023-08-03 16:00:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:00:53,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:00:53,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-08-03 16:00:53,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5946666666666667 [2023-08-03 16:00:53,249 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-08-03 16:00:53,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-08-03 16:00:53,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:00:53,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-08-03 16:00:53,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 16:00:53,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 16:00:53,269 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 16:00:53,270 INFO L175 Difference]: Start difference. First operand has 18 places, 15 transitions, 35 flow. Second operand 3 states and 223 transitions. [2023-08-03 16:00:53,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 20 transitions, 75 flow [2023-08-03 16:00:53,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 75 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:00:53,273 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 43 flow [2023-08-03 16:00:53,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=43, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-03 16:00:53,278 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2023-08-03 16:00:53,279 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 43 flow [2023-08-03 16:00:53,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states 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 16:00:53,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:00:53,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 16:00:53,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:00:53,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:00:53,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:00:53,282 INFO L85 PathProgramCache]: Analyzing trace with hash -519673387, now seen corresponding path program 1 times [2023-08-03 16:00:53,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:00:53,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843049380] [2023-08-03 16:00:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:53,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:00:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:53,389 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 16:00:53,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:00:53,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843049380] [2023-08-03 16:00:53,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843049380] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:00:53,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605380008] [2023-08-03 16:00:53,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:53,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:00:53,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:00:53,413 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 16:00:53,466 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 16:00:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:53,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:00:53,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:00:53,549 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 16:00:53,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:00:53,566 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 16:00:53,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605380008] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:00:53,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:00:53,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-03 16:00:53,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557270861] [2023-08-03 16:00:53,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:00:53,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 16:00:53,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:00:53,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 16:00:53,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 16:00:53,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 125 [2023-08-03 16:00:53,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 43 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 16:00:53,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:00:53,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 125 [2023-08-03 16:00:53,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:00:53,618 INFO L124 PetriNetUnfolderBase]: 8/34 cut-off events. [2023-08-03 16:00:53,618 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-03 16:00:53,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 34 events. 8/34 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 61 event pairs, 0 based on Foata normal form. 5/37 useless extension candidates. Maximal degree in co-relation 58. Up to 18 conditions per place. [2023-08-03 16:00:53,619 INFO L140 encePairwiseOnDemand]: 122/125 looper letters, 11 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-08-03 16:00:53,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 18 transitions, 73 flow [2023-08-03 16:00:53,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:00:53,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:00:53,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 286 transitions. [2023-08-03 16:00:53,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.572 [2023-08-03 16:00:53,628 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 286 transitions. [2023-08-03 16:00:53,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 286 transitions. [2023-08-03 16:00:53,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:00:53,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 286 transitions. [2023-08-03 16:00:53,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states 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 16:00:53,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:53,635 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:53,635 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 43 flow. Second operand 4 states and 286 transitions. [2023-08-03 16:00:53,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 18 transitions, 73 flow [2023-08-03 16:00:53,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 67 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:00:53,636 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 35 flow [2023-08-03 16:00:53,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=35, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2023-08-03 16:00:53,637 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2023-08-03 16:00:53,637 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 35 flow [2023-08-03 16:00:53,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 16:00:53,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:00:53,638 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:00:53,648 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 16:00:53,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:00:53,838 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:00:53,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:00:53,839 INFO L85 PathProgramCache]: Analyzing trace with hash -519672932, now seen corresponding path program 1 times [2023-08-03 16:00:53,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:00:53,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626999095] [2023-08-03 16:00:53,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:53,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:00:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:00:53,859 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:00:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:00:53,884 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:00:53,884 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:00:53,885 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 16:00:53,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-03 16:00:53,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 16:00:53,887 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 16:00:53,889 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:00:53,889 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:00:53,904 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 16:00:53,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 95 transitions, 208 flow [2023-08-03 16:00:53,941 INFO L124 PetriNetUnfolderBase]: 13/173 cut-off events. [2023-08-03 16:00:53,941 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 16:00:53,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 173 events. 13/173 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 376 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 108. Up to 8 conditions per place. [2023-08-03 16:00:53,942 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 95 transitions, 208 flow [2023-08-03 16:00:53,943 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 75 transitions, 162 flow [2023-08-03 16:00:53,943 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:00:53,943 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 75 transitions, 162 flow [2023-08-03 16:00:53,943 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 75 transitions, 162 flow [2023-08-03 16:00:53,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 75 transitions, 162 flow [2023-08-03 16:00:53,968 INFO L124 PetriNetUnfolderBase]: 3/106 cut-off events. [2023-08-03 16:00:53,968 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:00:53,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 106 events. 3/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 147 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 74. Up to 6 conditions per place. [2023-08-03 16:00:53,971 INFO L119 LiptonReduction]: Number of co-enabled transitions 1484 [2023-08-03 16:00:55,712 INFO L134 LiptonReduction]: Checked pairs total: 4472 [2023-08-03 16:00:55,712 INFO L136 LiptonReduction]: Total number of compositions: 51 [2023-08-03 16:00:55,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:00:55,715 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;@7cc81c0d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:00:55,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:00:55,717 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:00:55,717 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-03 16:00:55,717 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:00:55,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:00:55,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-03 16:00:55,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:00:55,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:00:55,717 INFO L85 PathProgramCache]: Analyzing trace with hash 431299, now seen corresponding path program 1 times [2023-08-03 16:00:55,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:00:55,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371575990] [2023-08-03 16:00:55,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:55,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:00:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:55,748 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 16:00:55,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:00:55,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371575990] [2023-08-03 16:00:55,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371575990] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:00:55,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:00:55,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:00:55,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29914518] [2023-08-03 16:00:55,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:00:55,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:00:55,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:00:55,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:00:55,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:00:55,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 146 [2023-08-03 16:00:55,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 16:00:55,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:00:55,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 146 [2023-08-03 16:00:55,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:00:55,824 INFO L124 PetriNetUnfolderBase]: 236/503 cut-off events. [2023-08-03 16:00:55,824 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-03 16:00:55,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 503 events. 236/503 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2561 event pairs, 100 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 177. Up to 407 conditions per place. [2023-08-03 16:00:55,829 INFO L140 encePairwiseOnDemand]: 143/146 looper letters, 20 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-03 16:00:55,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 118 flow [2023-08-03 16:00:55,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:00:55,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:00:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2023-08-03 16:00:55,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6210045662100456 [2023-08-03 16:00:55,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2023-08-03 16:00:55,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2023-08-03 16:00:55,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:00:55,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2023-08-03 16:00:55,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:55,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 16:00:55,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 16:00:55,833 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 62 flow. Second operand 3 states and 272 transitions. [2023-08-03 16:00:55,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 118 flow [2023-08-03 16:00:55,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 116 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 16:00:55,835 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 72 flow [2023-08-03 16:00:55,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-08-03 16:00:55,835 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-08-03 16:00:55,835 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 72 flow [2023-08-03 16:00:55,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 16:00:55,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:00:55,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:00:55,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 16:00:55,836 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:00:55,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:00:55,837 INFO L85 PathProgramCache]: Analyzing trace with hash -696369992, now seen corresponding path program 1 times [2023-08-03 16:00:55,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:00:55,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083012204] [2023-08-03 16:00:55,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:55,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:00:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:55,878 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 16:00:55,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:00:55,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083012204] [2023-08-03 16:00:55,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083012204] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:00:55,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776942636] [2023-08-03 16:00:55,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:55,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:00:55,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:00:55,880 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 16:00:55,906 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 16:00:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:00:55,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:00:55,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:00:55,963 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 16:00:55,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:00:55,979 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 16:00:55,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776942636] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:00:55,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:00:55,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:00:55,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875880200] [2023-08-03 16:00:55,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:00:55,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:00:55,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:00:55,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:00:55,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:00:55,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 146 [2023-08-03 16:00:55,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 72 flow. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:55,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:00:55,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 146 [2023-08-03 16:00:55,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:00:56,075 INFO L124 PetriNetUnfolderBase]: 228/441 cut-off events. [2023-08-03 16:00:56,075 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-03 16:00:56,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 441 events. 228/441 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2150 event pairs, 51 based on Foata normal form. 5/443 useless extension candidates. Maximal degree in co-relation 510. Up to 238 conditions per place. [2023-08-03 16:00:56,079 INFO L140 encePairwiseOnDemand]: 142/146 looper letters, 28 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2023-08-03 16:00:56,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 41 transitions, 166 flow [2023-08-03 16:00:56,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:00:56,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:00:56,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 361 transitions. [2023-08-03 16:00:56,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6181506849315068 [2023-08-03 16:00:56,081 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 361 transitions. [2023-08-03 16:00:56,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 361 transitions. [2023-08-03 16:00:56,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:00:56,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 361 transitions. [2023-08-03 16:00:56,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states 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 16:00:56,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:56,084 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:56,085 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 72 flow. Second operand 4 states and 361 transitions. [2023-08-03 16:00:56,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 41 transitions, 166 flow [2023-08-03 16:00:56,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:00:56,087 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 90 flow [2023-08-03 16:00:56,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2023-08-03 16:00:56,088 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2023-08-03 16:00:56,088 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 90 flow [2023-08-03 16:00:56,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:00:56,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:00:56,089 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-08-03 16:00:56,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 16:00:56,294 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 16:00:56,294 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:00:56,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:00:56,295 INFO L85 PathProgramCache]: Analyzing trace with hash -665519698, now seen corresponding path program 1 times [2023-08-03 16:00:56,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:00:56,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288125734] [2023-08-03 16:00:56,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:00:56,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:00:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:00:56,317 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:00:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:00:56,330 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:00:56,331 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:00:56,331 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-03 16:00:56,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 16:00:56,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 16:00:56,331 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 16:00:56,334 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:00:56,334 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:00:56,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:00:56 BasicIcfg [2023-08-03 16:00:56,357 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:00:56,357 INFO L158 Benchmark]: Toolchain (without parser) took 6330.12ms. Allocated memory is still 518.0MB. Free memory was 467.5MB in the beginning and 355.4MB in the end (delta: 112.1MB). Peak memory consumption was 112.5MB. Max. memory is 16.0GB. [2023-08-03 16:00:56,357 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 358.6MB. Free memory is still 310.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:00:56,358 INFO L158 Benchmark]: CACSL2BoogieTranslator took 358.76ms. Allocated memory is still 518.0MB. Free memory was 467.0MB in the beginning and 448.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 16:00:56,358 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.55ms. Allocated memory is still 518.0MB. Free memory was 447.7MB in the beginning and 446.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:00:56,358 INFO L158 Benchmark]: Boogie Preprocessor took 20.56ms. Allocated memory is still 518.0MB. Free memory was 446.1MB in the beginning and 444.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:00:56,359 INFO L158 Benchmark]: RCFGBuilder took 336.33ms. Allocated memory is still 518.0MB. Free memory was 444.4MB in the beginning and 431.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 16:00:56,359 INFO L158 Benchmark]: TraceAbstraction took 5576.98ms. Allocated memory is still 518.0MB. Free memory was 430.1MB in the beginning and 355.4MB in the end (delta: 74.7MB). Peak memory consumption was 76.8MB. Max. memory is 16.0GB. [2023-08-03 16:00:56,361 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 358.6MB. Free memory is still 310.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 358.76ms. Allocated memory is still 518.0MB. Free memory was 467.0MB in the beginning and 448.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.55ms. Allocated memory is still 518.0MB. Free memory was 447.7MB in the beginning and 446.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.56ms. Allocated memory is still 518.0MB. Free memory was 446.1MB in the beginning and 444.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 336.33ms. Allocated memory is still 518.0MB. Free memory was 444.4MB in the beginning and 431.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 5576.98ms. Allocated memory is still 518.0MB. Free memory was 430.1MB in the beginning and 355.4MB in the end (delta: 74.7MB). Peak memory consumption was 76.8MB. 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: 2.0s, 62 PlacesBefore, 18 PlacesAfterwards, 60 TransitionsBefore, 15 TransitionsAfterwards, 532 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 46 TotalNumberOfCompositions, 1212 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 910, independent: 806, independent conditional: 0, independent unconditional: 806, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 309, independent: 289, independent conditional: 0, independent unconditional: 289, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 910, independent: 517, independent conditional: 0, independent unconditional: 517, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 309, unknown conditional: 0, unknown unconditional: 309] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 79 PlacesBefore, 30 PlacesAfterwards, 75 TransitionsBefore, 25 TransitionsAfterwards, 1484 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 51 TotalNumberOfCompositions, 4472 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1646, independent: 1453, independent conditional: 0, independent unconditional: 1453, dependent: 193, dependent conditional: 0, dependent unconditional: 193, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 675, independent: 644, independent conditional: 0, independent unconditional: 644, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1646, independent: 809, independent conditional: 0, independent unconditional: 809, dependent: 162, dependent conditional: 0, dependent unconditional: 162, unknown: 675, unknown conditional: 0, unknown unconditional: 675] , Statistics on independence cache: Total cache size (in pairs): 70, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, 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 glob1 = 0; [L682] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L696] 0 pthread_t id[2]; [L697] 0 int asdf=0; VAL [asdf=0, glob1=0, id={6:0}, mutex1={3:0}, mutex2={4:0}] [L697] COND TRUE 0 asdf<2 [L697] FCALL, FORK 0 pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, asdf=0, glob1=0, id={6:0}, mutex1={3:0}, mutex2={4:0}, pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0))=-2] [L697] 0 asdf++ VAL [arg={0:0}, asdf=1, glob1=0, id={6:0}, mutex1={3:0}, mutex2={4:0}] [L697] COND TRUE 0 asdf<2 [L697] FCALL, FORK 0 pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, asdf=1, glob1=0, id={6:0}, mutex1={3:0}, mutex2={4:0}, pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0))=-1] [L697] 0 asdf++ VAL [arg={0:0}, asdf=2, glob1=0, id={6:0}, mutex1={3:0}, mutex2={4:0}] [L697] COND FALSE 0 !(asdf<2) [L699] CALL 0 __VERIFIER_assert(glob1 == 5) [L19] COND TRUE 0 !(cond) [L19] 0 reach_error() VAL [\old(cond)=0, arg={0:0}, cond=0, glob1=0, mutex1={3:0}, mutex2={4:0}] - UnprovableResult [Line: 697]: 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, 91 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52 IncrementalHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 2 mSDtfsCounter, 52 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=1, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 43 SizeOfPredicates, 0 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 106 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: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 97 IncrementalHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 7 mSDtfsCounter, 97 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=2, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 52 SizeOfPredicates, 0 NumberOfNonLiveVariables, 105 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-03 16:00:56,383 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...