/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 INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_18-first-reads_unknown_1_pos_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 22:04:26,043 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 22:04:26,093 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 22:04:26,096 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 22:04:26,096 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 22:04:26,097 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 22:04:26,097 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 22:04:26,125 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 22:04:26,125 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 22:04:26,126 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 22:04:26,126 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 22:04:26,127 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 22:04:26,127 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 22:04:26,127 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 22:04:26,128 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 22:04:26,128 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 22:04:26,128 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 22:04:26,137 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 22:04:26,138 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 22:04:26,138 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 22:04:26,141 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 22:04:26,141 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 22:04:26,142 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 22:04:26,142 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 22:04:26,142 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 22:04:26,142 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 22:04:26,142 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 22:04:26,143 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 22:04:26,143 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 22:04:26,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 22:04:26,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:04:26,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 22:04:26,144 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 22:04:26,144 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 22:04:26,144 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 22:04:26,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 22:04:26,144 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 22:04:26,145 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 22:04:26,145 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 22:04:26,145 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 22:04:26,145 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 22:04:26,147 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 22:04:26,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 22:04:26,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 22:04:26,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 22:04:26,392 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 22:04:26,392 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 22:04:26,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_18-first-reads_unknown_1_pos_bound2.i [2023-08-03 22:04:27,514 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 22:04:27,715 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 22:04:27,716 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_18-first-reads_unknown_1_pos_bound2.i [2023-08-03 22:04:27,726 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6f4d9a73/21a3dc359f444dbf83467a65cdb3f437/FLAGb29ea9c48 [2023-08-03 22:04:27,737 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6f4d9a73/21a3dc359f444dbf83467a65cdb3f437 [2023-08-03 22:04:27,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 22:04:27,740 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 22:04:27,741 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 22:04:27,741 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 22:04:27,751 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 22:04:27,751 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:04:27" (1/1) ... [2023-08-03 22:04:27,752 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3db08cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:04:27, skipping insertion in model container [2023-08-03 22:04:27,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:04:27" (1/1) ... [2023-08-03 22:04:27,803 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 22:04:27,951 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_18-first-reads_unknown_1_pos_bound2.i[1097,1110] [2023-08-03 22:04:28,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:04:28,108 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 22:04:28,117 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_18-first-reads_unknown_1_pos_bound2.i[1097,1110] [2023-08-03 22:04:28,128 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 22:04:28,129 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-03 22:04:28,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:04:28,175 INFO L206 MainTranslator]: Completed translation [2023-08-03 22:04:28,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:04:28 WrapperNode [2023-08-03 22:04:28,175 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 22:04:28,176 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 22:04:28,176 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 22:04:28,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 22:04:28,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:04:28" (1/1) ... [2023-08-03 22:04:28,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:04:28" (1/1) ... [2023-08-03 22:04:28,207 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 72 [2023-08-03 22:04:28,207 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 22:04:28,208 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 22:04:28,208 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 22:04:28,208 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 22:04:28,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:04:28" (1/1) ... [2023-08-03 22:04:28,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:04:28" (1/1) ... [2023-08-03 22:04:28,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:04:28" (1/1) ... [2023-08-03 22:04:28,217 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:04:28" (1/1) ... [2023-08-03 22:04:28,222 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:04:28" (1/1) ... [2023-08-03 22:04:28,224 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:04:28" (1/1) ... [2023-08-03 22:04:28,225 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:04:28" (1/1) ... [2023-08-03 22:04:28,226 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:04:28" (1/1) ... [2023-08-03 22:04:28,228 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 22:04:28,229 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 22:04:28,229 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 22:04:28,229 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 22:04:28,229 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:04:28" (1/1) ... [2023-08-03 22:04:28,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:04:28,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:04:28,258 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 22:04:28,266 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 22:04:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 22:04:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 22:04:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 22:04:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 22:04:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 22:04:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 22:04:28,287 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 22:04:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 22:04:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 22:04:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 22:04:28,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 22:04:28,289 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 22:04:28,390 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 22:04:28,392 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 22:04:28,499 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 22:04:28,504 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 22:04:28,505 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 22:04:28,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:04:28 BoogieIcfgContainer [2023-08-03 22:04:28,506 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 22:04:28,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 22:04:28,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 22:04:28,511 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 22:04:28,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 10:04:27" (1/3) ... [2023-08-03 22:04:28,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17838bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:04:28, skipping insertion in model container [2023-08-03 22:04:28,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:04:28" (2/3) ... [2023-08-03 22:04:28,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17838bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:04:28, skipping insertion in model container [2023-08-03 22:04:28,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:04:28" (3/3) ... [2023-08-03 22:04:28,513 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_18-first-reads_unknown_1_pos_bound2.i [2023-08-03 22:04:28,520 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 22:04:28,527 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 22:04:28,528 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 22:04:28,528 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 22:04:28,591 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 22:04:28,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 73 transitions, 154 flow [2023-08-03 22:04:28,661 INFO L124 PetriNetUnfolderBase]: 7/92 cut-off events. [2023-08-03 22:04:28,662 INFO L125 PetriNetUnfolderBase]: For 1/2 co-relation queries the response was YES. [2023-08-03 22:04:28,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 92 events. 7/92 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 47. Up to 4 conditions per place. [2023-08-03 22:04:28,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 73 transitions, 154 flow [2023-08-03 22:04:28,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 68 transitions, 141 flow [2023-08-03 22:04:28,678 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:04:28,687 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 68 transitions, 141 flow [2023-08-03 22:04:28,689 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 68 transitions, 141 flow [2023-08-03 22:04:28,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 68 transitions, 141 flow [2023-08-03 22:04:28,709 INFO L124 PetriNetUnfolderBase]: 6/87 cut-off events. [2023-08-03 22:04:28,709 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:04:28,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 87 events. 6/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 47. Up to 4 conditions per place. [2023-08-03 22:04:28,711 INFO L119 LiptonReduction]: Number of co-enabled transitions 1150 [2023-08-03 22:04:30,703 INFO L134 LiptonReduction]: Checked pairs total: 1173 [2023-08-03 22:04:30,703 INFO L136 LiptonReduction]: Total number of compositions: 72 [2023-08-03 22:04:30,725 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:04:30,732 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;@5731f17c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:04:30,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 22:04:30,743 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:04:30,744 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-03 22:04:30,744 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:04:30,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:04:30,745 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 22:04:30,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:04:30,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:04:30,752 INFO L85 PathProgramCache]: Analyzing trace with hash 263516463, now seen corresponding path program 1 times [2023-08-03 22:04:30,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:04:30,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43581781] [2023-08-03 22:04:30,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:04:30,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:04:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:04:30,881 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 22:04:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:04:30,939 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 22:04:30,941 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 22:04:30,942 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 22:04:30,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 22:04:30,944 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 22:04:30,957 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-03 22:04:30,958 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 22:04:30,958 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 22:04:30,985 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 22:04:30,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 98 transitions, 214 flow [2023-08-03 22:04:31,029 INFO L124 PetriNetUnfolderBase]: 14/160 cut-off events. [2023-08-03 22:04:31,030 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-08-03 22:04:31,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 160 events. 14/160 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 347 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 94. Up to 8 conditions per place. [2023-08-03 22:04:31,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 98 transitions, 214 flow [2023-08-03 22:04:31,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 98 transitions, 214 flow [2023-08-03 22:04:31,033 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:04:31,034 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 98 transitions, 214 flow [2023-08-03 22:04:31,034 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 98 transitions, 214 flow [2023-08-03 22:04:31,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 98 transitions, 214 flow [2023-08-03 22:04:31,066 INFO L124 PetriNetUnfolderBase]: 14/160 cut-off events. [2023-08-03 22:04:31,066 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-08-03 22:04:31,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 160 events. 14/160 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 347 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 94. Up to 8 conditions per place. [2023-08-03 22:04:31,074 INFO L119 LiptonReduction]: Number of co-enabled transitions 3864 [2023-08-03 22:04:32,566 INFO L134 LiptonReduction]: Checked pairs total: 5627 [2023-08-03 22:04:32,566 INFO L136 LiptonReduction]: Total number of compositions: 83 [2023-08-03 22:04:32,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:04:32,569 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;@5731f17c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:04:32,569 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 22:04:32,573 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:04:32,573 INFO L124 PetriNetUnfolderBase]: 2/33 cut-off events. [2023-08-03 22:04:32,573 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-03 22:04:32,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:04:32,573 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 22:04:32,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:04:32,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:04:32,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1602414662, now seen corresponding path program 1 times [2023-08-03 22:04:32,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:04:32,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575687040] [2023-08-03 22:04:32,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:04:32,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:04:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:04:32,754 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 22:04:32,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:04:32,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575687040] [2023-08-03 22:04:32,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575687040] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:04:32,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926571097] [2023-08-03 22:04:32,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:04:32,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:04:32,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:04:32,757 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 22:04:32,758 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 22:04:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:04:32,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 22:04:32,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:04:32,895 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 22:04:32,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 22:04:32,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926571097] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:04:32,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 22:04:32,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 22:04:32,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000387353] [2023-08-03 22:04:32,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:04:32,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:04:32,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:04:32,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:04:32,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:04:32,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 181 [2023-08-03 22:04:32,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 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 22:04:32,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:04:32,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 181 [2023-08-03 22:04:32,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:04:33,105 INFO L124 PetriNetUnfolderBase]: 633/1041 cut-off events. [2023-08-03 22:04:33,105 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-03 22:04:33,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2102 conditions, 1041 events. 633/1041 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4695 event pairs, 0 based on Foata normal form. 0/777 useless extension candidates. Maximal degree in co-relation 333. Up to 875 conditions per place. [2023-08-03 22:04:33,108 INFO L140 encePairwiseOnDemand]: 177/181 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2023-08-03 22:04:33,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 53 transitions, 222 flow [2023-08-03 22:04:33,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:04:33,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:04:33,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 467 transitions. [2023-08-03 22:04:33,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160220994475138 [2023-08-03 22:04:33,124 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 467 transitions. [2023-08-03 22:04:33,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 467 transitions. [2023-08-03 22:04:33,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:04:33,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 467 transitions. [2023-08-03 22:04:33,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 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 22:04:33,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 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 22:04:33,138 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 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 22:04:33,140 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 76 flow. Second operand 5 states and 467 transitions. [2023-08-03 22:04:33,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 53 transitions, 222 flow [2023-08-03 22:04:33,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 53 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 22:04:33,148 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2023-08-03 22:04:33,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2023-08-03 22:04:33,159 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-08-03 22:04:33,160 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2023-08-03 22:04:33,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 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 22:04:33,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 22:04:33,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 22:04:33,365 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 22:04:33,365 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 22:04:33,366 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (1/2) [2023-08-03 22:04:33,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 98 transitions, 214 flow [2023-08-03 22:04:33,384 INFO L124 PetriNetUnfolderBase]: 14/160 cut-off events. [2023-08-03 22:04:33,384 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-08-03 22:04:33,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 160 events. 14/160 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 347 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 94. Up to 8 conditions per place. [2023-08-03 22:04:33,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 98 transitions, 214 flow [2023-08-03 22:04:33,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 98 transitions, 214 flow [2023-08-03 22:04:33,386 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:04:33,386 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 98 transitions, 214 flow [2023-08-03 22:04:33,386 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 98 transitions, 214 flow [2023-08-03 22:04:33,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 98 transitions, 214 flow [2023-08-03 22:04:33,400 INFO L124 PetriNetUnfolderBase]: 14/160 cut-off events. [2023-08-03 22:04:33,400 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-08-03 22:04:33,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 160 events. 14/160 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 347 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 94. Up to 8 conditions per place. [2023-08-03 22:04:33,403 INFO L119 LiptonReduction]: Number of co-enabled transitions 3864 [2023-08-03 22:04:34,944 INFO L134 LiptonReduction]: Checked pairs total: 5523 [2023-08-03 22:04:34,944 INFO L136 LiptonReduction]: Total number of compositions: 83 [2023-08-03 22:04:34,948 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 22:04:34,953 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;@5731f17c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:04:34,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 22:04:34,955 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:04:34,955 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2023-08-03 22:04:34,955 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 22:04:34,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:04:34,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 22:04:34,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 22:04:34,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:04:34,956 INFO L85 PathProgramCache]: Analyzing trace with hash 223114622, now seen corresponding path program 1 times [2023-08-03 22:04:34,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:04:34,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384304538] [2023-08-03 22:04:34,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:04:34,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:04:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:04:35,081 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 22:04:35,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:04:35,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384304538] [2023-08-03 22:04:35,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384304538] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:04:35,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:04:35,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 22:04:35,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995045027] [2023-08-03 22:04:35,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:04:35,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 22:04:35,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:04:35,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 22:04:35,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 22:04:35,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 181 [2023-08-03 22:04:35,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 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 22:04:35,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:04:35,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 181 [2023-08-03 22:04:35,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:04:35,280 INFO L124 PetriNetUnfolderBase]: 1060/1722 cut-off events. [2023-08-03 22:04:35,280 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-08-03 22:04:35,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3483 conditions, 1722 events. 1060/1722 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8546 event pairs, 145 based on Foata normal form. 0/1237 useless extension candidates. Maximal degree in co-relation 2722. Up to 619 conditions per place. [2023-08-03 22:04:35,287 INFO L140 encePairwiseOnDemand]: 173/181 looper letters, 63 selfloop transitions, 8 changer transitions 6/80 dead transitions. [2023-08-03 22:04:35,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 80 transitions, 351 flow [2023-08-03 22:04:35,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:04:35,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:04:35,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 489 transitions. [2023-08-03 22:04:35,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403314917127072 [2023-08-03 22:04:35,291 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 489 transitions. [2023-08-03 22:04:35,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 489 transitions. [2023-08-03 22:04:35,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:04:35,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 489 transitions. [2023-08-03 22:04:35,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:04:35,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 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 22:04:35,295 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 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 22:04:35,295 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 76 flow. Second operand 5 states and 489 transitions. [2023-08-03 22:04:35,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 80 transitions, 351 flow [2023-08-03 22:04:35,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 80 transitions, 351 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 22:04:35,298 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 140 flow [2023-08-03 22:04:35,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2023-08-03 22:04:35,298 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2023-08-03 22:04:35,299 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 140 flow [2023-08-03 22:04:35,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 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 22:04:35,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:04:35,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:04:35,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 22:04:35,299 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 22:04:35,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:04:35,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1673402781, now seen corresponding path program 1 times [2023-08-03 22:04:35,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:04:35,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870080556] [2023-08-03 22:04:35,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:04:35,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:04:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:04:35,310 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 22:04:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:04:35,318 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 22:04:35,318 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 22:04:35,319 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 22:04:35,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 22:04:35,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 22:04:35,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 22:04:35,319 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 22:04:35,320 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-03 22:04:35,323 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 22:04:35,323 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 22:04:35,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 10:04:35 BasicIcfg [2023-08-03 22:04:35,341 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 22:04:35,342 INFO L158 Benchmark]: Toolchain (without parser) took 7602.09ms. Allocated memory was 337.6MB in the beginning and 436.2MB in the end (delta: 98.6MB). Free memory was 291.3MB in the beginning and 220.9MB in the end (delta: 70.4MB). Peak memory consumption was 169.3MB. Max. memory is 16.0GB. [2023-08-03 22:04:35,342 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 337.6MB. Free memory is still 294.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 22:04:35,342 INFO L158 Benchmark]: CACSL2BoogieTranslator took 434.63ms. Allocated memory is still 337.6MB. Free memory was 291.3MB in the beginning and 272.1MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 22:04:35,343 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.06ms. Allocated memory is still 337.6MB. Free memory was 272.1MB in the beginning and 270.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 22:04:35,343 INFO L158 Benchmark]: Boogie Preprocessor took 20.30ms. Allocated memory is still 337.6MB. Free memory was 270.0MB in the beginning and 268.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 22:04:35,343 INFO L158 Benchmark]: RCFGBuilder took 277.68ms. Allocated memory is still 337.6MB. Free memory was 268.6MB in the beginning and 255.6MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 22:04:35,343 INFO L158 Benchmark]: TraceAbstraction took 6833.30ms. Allocated memory was 337.6MB in the beginning and 436.2MB in the end (delta: 98.6MB). Free memory was 254.9MB in the beginning and 220.9MB in the end (delta: 34.1MB). Peak memory consumption was 133.7MB. Max. memory is 16.0GB. [2023-08-03 22:04:35,345 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 337.6MB. Free memory is still 294.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 434.63ms. Allocated memory is still 337.6MB. Free memory was 291.3MB in the beginning and 272.1MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 31.06ms. Allocated memory is still 337.6MB. Free memory was 272.1MB in the beginning and 270.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.30ms. Allocated memory is still 337.6MB. Free memory was 270.0MB in the beginning and 268.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 277.68ms. Allocated memory is still 337.6MB. Free memory was 268.6MB in the beginning and 255.6MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 6833.30ms. Allocated memory was 337.6MB in the beginning and 436.2MB in the end (delta: 98.6MB). Free memory was 254.9MB in the beginning and 220.9MB in the end (delta: 34.1MB). Peak memory consumption was 133.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] - GenericResultAtLocation [Line: 233]: Unsoundness Warning unspecified type, defaulting to int C: short [233] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 67 PlacesBefore, 14 PlacesAfterwards, 68 TransitionsBefore, 11 TransitionsAfterwards, 1150 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 4 ChoiceCompositions, 72 TotalNumberOfCompositions, 1173 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1013, independent: 979, independent conditional: 0, independent unconditional: 979, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 657, independent: 642, independent conditional: 0, independent unconditional: 642, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1013, independent: 337, independent conditional: 0, independent unconditional: 337, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 657, unknown conditional: 0, unknown unconditional: 657] , Statistics on independence cache: Total cache size (in pairs): 9, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 95 PlacesBefore, 30 PlacesAfterwards, 98 TransitionsBefore, 29 TransitionsAfterwards, 3864 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 4 ChoiceCompositions, 83 TotalNumberOfCompositions, 5627 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4237, independent: 4143, independent conditional: 0, independent unconditional: 4143, dependent: 94, dependent conditional: 0, dependent unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2131, independent: 2093, independent conditional: 0, independent unconditional: 2093, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4237, independent: 2050, independent conditional: 0, independent unconditional: 2050, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 2131, unknown conditional: 0, unknown unconditional: 2131] , Statistics on independence cache: Total cache size (in pairs): 135, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 95 PlacesBefore, 30 PlacesAfterwards, 98 TransitionsBefore, 29 TransitionsAfterwards, 3864 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 4 ChoiceCompositions, 83 TotalNumberOfCompositions, 5523 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4143, independent: 4053, independent conditional: 0, independent unconditional: 4053, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2130, independent: 2099, independent conditional: 0, independent unconditional: 2099, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4143, independent: 1954, independent conditional: 0, independent unconditional: 1954, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 2130, unknown conditional: 0, unknown unconditional: 2130] , Statistics on independence cache: Total cache size (in pairs): 125, Positive cache size: 114, Positive conditional cache size: 0, Positive unconditional cache size: 114, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L682] 0 int glob1 = 0; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L697] 0 pthread_t id[2]; [L698] 0 int asdf=0; VAL [asdf=0, glob1=0, id={5:0}, mutex1={3:0}] [L698] COND TRUE 0 asdf<2 [L698] FCALL, FORK 0 pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0)) VAL [asdf=0, glob1=0, id={5:0}, mutex1={3:0}, pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0))=-1] [L685] 1 int t = __VERIFIER_nondet_int(); [L687] COND TRUE 1 t == 42 [L688] 1 glob1 = 1 VAL [arg={0:0}, arg={0:0}, glob1=1, mutex1={3:0}, t=42] [L690] 1 t = glob1 [L691] CALL 1 __VERIFIER_assert(t == 0) [L19] COND TRUE 1 !(cond) [L19] 1 reach_error() VAL [\old(cond)=0, cond=0, glob1=1, mutex1={3:0}] - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 91 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.3s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 113 locations, 4 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: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 76 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 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 1 thread instances CFG has 4 procedures, 113 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 70 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 112 IncrementalHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 7 mSDtfsCounter, 112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred in iteration=1, InterpolantAutomatonStates: 5, 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, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-03 22:04:35,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...