/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_36-apron_17-traces-rpb-litmus_unknown_1_neg_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 22:10:23,407 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 22:10:23,448 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 22:10:23,451 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 22:10:23,451 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 22:10:23,451 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 22:10:23,452 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 22:10:23,464 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 22:10:23,464 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 22:10:23,465 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 22:10:23,465 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 22:10:23,465 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 22:10:23,465 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 22:10:23,466 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 22:10:23,466 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 22:10:23,466 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 22:10:23,466 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 22:10:23,466 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 22:10:23,467 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 22:10:23,467 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 22:10:23,467 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 22:10:23,467 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 22:10:23,467 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 22:10:23,468 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 22:10:23,468 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 22:10:23,468 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 22:10:23,468 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 22:10:23,468 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 22:10:23,468 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 22:10:23,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 22:10:23,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:10:23,469 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 22:10:23,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 22:10:23,469 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 22:10:23,469 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 22:10:23,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 22:10:23,469 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 22:10:23,470 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 22:10:23,470 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 22:10:23,470 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 22:10:23,470 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 22:10:23,470 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 22:10:23,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 22:10:23,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 22:10:23,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 22:10:23,651 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 22:10:23,651 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 22:10:23,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_36-apron_17-traces-rpb-litmus_unknown_1_neg_bound2.i [2023-08-03 22:10:24,586 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 22:10:24,796 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 22:10:24,797 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_36-apron_17-traces-rpb-litmus_unknown_1_neg_bound2.i [2023-08-03 22:10:24,806 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd605cace/46c8b10303cd41f3ba4d1d49b1737e9b/FLAGd77cd5373 [2023-08-03 22:10:24,814 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd605cace/46c8b10303cd41f3ba4d1d49b1737e9b [2023-08-03 22:10:24,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 22:10:24,817 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 22:10:24,818 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 22:10:24,818 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 22:10:24,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 22:10:24,820 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:10:24" (1/1) ... [2023-08-03 22:10:24,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d7a9c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:24, skipping insertion in model container [2023-08-03 22:10:24,821 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:10:24" (1/1) ... [2023-08-03 22:10:24,855 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 22:10:24,989 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_36-apron_17-traces-rpb-litmus_unknown_1_neg_bound2.i[1098,1111] [2023-08-03 22:10:25,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:10:25,116 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 22:10:25,125 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_36-apron_17-traces-rpb-litmus_unknown_1_neg_bound2.i[1098,1111] [2023-08-03 22:10:25,140 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 22:10:25,141 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-03 22:10:25,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:10:25,185 INFO L206 MainTranslator]: Completed translation [2023-08-03 22:10:25,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:25 WrapperNode [2023-08-03 22:10:25,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 22:10:25,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 22:10:25,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 22:10:25,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 22:10:25,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:25" (1/1) ... [2023-08-03 22:10:25,214 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:25" (1/1) ... [2023-08-03 22:10:25,232 INFO L138 Inliner]: procedures = 163, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2023-08-03 22:10:25,232 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 22:10:25,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 22:10:25,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 22:10:25,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 22:10:25,239 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:25" (1/1) ... [2023-08-03 22:10:25,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:25" (1/1) ... [2023-08-03 22:10:25,244 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:25" (1/1) ... [2023-08-03 22:10:25,244 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:25" (1/1) ... [2023-08-03 22:10:25,260 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:25" (1/1) ... [2023-08-03 22:10:25,265 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:25" (1/1) ... [2023-08-03 22:10:25,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:25" (1/1) ... [2023-08-03 22:10:25,267 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:25" (1/1) ... [2023-08-03 22:10:25,268 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 22:10:25,269 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 22:10:25,269 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 22:10:25,269 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 22:10:25,270 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:25" (1/1) ... [2023-08-03 22:10:25,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:10:25,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:10:25,295 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 22:10:25,313 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 22:10:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 22:10:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 22:10:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 22:10:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 22:10:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 22:10:25,325 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 22:10:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 22:10:25,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 22:10:25,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 22:10:25,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 22:10:25,327 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 22:10:25,427 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 22:10:25,428 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 22:10:25,594 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 22:10:25,601 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 22:10:25,601 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-03 22:10:25,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:10:25 BoogieIcfgContainer [2023-08-03 22:10:25,603 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 22:10:25,605 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 22:10:25,605 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 22:10:25,607 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 22:10:25,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 10:10:24" (1/3) ... [2023-08-03 22:10:25,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7daeda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:10:25, skipping insertion in model container [2023-08-03 22:10:25,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:25" (2/3) ... [2023-08-03 22:10:25,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7daeda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:10:25, skipping insertion in model container [2023-08-03 22:10:25,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:10:25" (3/3) ... [2023-08-03 22:10:25,609 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_36-apron_17-traces-rpb-litmus_unknown_1_neg_bound2.i [2023-08-03 22:10:25,615 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 22:10:25,622 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 22:10:25,622 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 22:10:25,623 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 22:10:25,670 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 22:10:25,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 80 transitions, 165 flow [2023-08-03 22:10:25,762 INFO L124 PetriNetUnfolderBase]: 6/112 cut-off events. [2023-08-03 22:10:25,762 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:10:25,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 112 events. 6/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 175 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 63. Up to 4 conditions per place. [2023-08-03 22:10:25,766 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 80 transitions, 165 flow [2023-08-03 22:10:25,770 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 52 transitions, 109 flow [2023-08-03 22:10:25,772 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:10:25,781 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 52 transitions, 109 flow [2023-08-03 22:10:25,783 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 52 transitions, 109 flow [2023-08-03 22:10:25,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 52 transitions, 109 flow [2023-08-03 22:10:25,798 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2023-08-03 22:10:25,799 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:10:25,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 56 events. 0/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-03 22:10:25,799 INFO L119 LiptonReduction]: Number of co-enabled transitions 200 [2023-08-03 22:10:27,751 INFO L134 LiptonReduction]: Checked pairs total: 158 [2023-08-03 22:10:27,751 INFO L136 LiptonReduction]: Total number of compositions: 50 [2023-08-03 22:10:27,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:10:27,763 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;@5e94ad15, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:10:27,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 22:10:27,766 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:10:27,766 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-03 22:10:27,766 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:10:27,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:27,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 22:10:27,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:10:27,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:27,769 INFO L85 PathProgramCache]: Analyzing trace with hash 8232703, now seen corresponding path program 1 times [2023-08-03 22:10:27,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:27,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373890746] [2023-08-03 22:10:27,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:27,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:10:27,866 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 22:10:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:10:27,912 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 22:10:27,913 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 22:10:27,913 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 22:10:27,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 22:10:27,915 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 22:10:27,917 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-03 22:10:27,917 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 22:10:27,917 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 22:10:27,927 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 22:10:27,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 91 transitions, 194 flow [2023-08-03 22:10:27,946 INFO L124 PetriNetUnfolderBase]: 9/160 cut-off events. [2023-08-03 22:10:27,947 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 22:10:27,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 160 events. 9/160 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 334 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 113. Up to 6 conditions per place. [2023-08-03 22:10:27,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 91 transitions, 194 flow [2023-08-03 22:10:27,948 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 63 transitions, 138 flow [2023-08-03 22:10:27,948 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:10:27,948 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 63 transitions, 138 flow [2023-08-03 22:10:27,948 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 63 transitions, 138 flow [2023-08-03 22:10:27,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 63 transitions, 138 flow [2023-08-03 22:10:27,961 INFO L124 PetriNetUnfolderBase]: 0/76 cut-off events. [2023-08-03 22:10:27,961 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 22:10:27,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 0/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-08-03 22:10:27,962 INFO L119 LiptonReduction]: Number of co-enabled transitions 620 [2023-08-03 22:10:29,742 INFO L134 LiptonReduction]: Checked pairs total: 1556 [2023-08-03 22:10:29,742 INFO L136 LiptonReduction]: Total number of compositions: 50 [2023-08-03 22:10:29,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:10:29,744 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;@5e94ad15, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:10:29,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 22:10:29,748 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:10:29,748 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-03 22:10:29,748 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 22:10:29,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:29,748 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-08-03 22:10:29,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:10:29,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:29,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1295226124, now seen corresponding path program 1 times [2023-08-03 22:10:29,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:29,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403133828] [2023-08-03 22:10:29,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:29,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:10:29,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:10:29,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403133828] [2023-08-03 22:10:29,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403133828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:10:29,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:10:29,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 22:10:29,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932653823] [2023-08-03 22:10:29,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:10:29,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 22:10:29,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:10:29,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 22:10:29,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 22:10:29,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 141 [2023-08-03 22:10:29,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 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 22:10:29,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:10:29,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 141 [2023-08-03 22:10:29,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:10:29,933 INFO L124 PetriNetUnfolderBase]: 20/68 cut-off events. [2023-08-03 22:10:29,933 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-03 22:10:29,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 68 events. 20/68 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 191 event pairs, 0 based on Foata normal form. 20/87 useless extension candidates. Maximal degree in co-relation 34. Up to 45 conditions per place. [2023-08-03 22:10:29,935 INFO L140 encePairwiseOnDemand]: 139/141 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-08-03 22:10:29,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 76 flow [2023-08-03 22:10:29,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 22:10:29,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 22:10:29,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2023-08-03 22:10:29,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6099290780141844 [2023-08-03 22:10:29,949 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 344 transitions. [2023-08-03 22:10:29,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 344 transitions. [2023-08-03 22:10:29,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:10:29,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 344 transitions. [2023-08-03 22:10:29,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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 22:10:29,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 22:10:29,963 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 22:10:29,964 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 44 flow. Second operand 4 states and 344 transitions. [2023-08-03 22:10:29,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 76 flow [2023-08-03 22:10:29,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 22:10:29,967 INFO L231 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2023-08-03 22:10:29,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2023-08-03 22:10:29,970 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2023-08-03 22:10:29,971 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 0 transitions, 0 flow [2023-08-03 22:10:29,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 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 22:10:29,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 22:10:29,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 22:10:29,972 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 22:10:29,972 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (1/2) [2023-08-03 22:10:29,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 91 transitions, 194 flow [2023-08-03 22:10:29,987 INFO L124 PetriNetUnfolderBase]: 9/160 cut-off events. [2023-08-03 22:10:29,987 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 22:10:29,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 160 events. 9/160 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 334 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 113. Up to 6 conditions per place. [2023-08-03 22:10:29,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 91 transitions, 194 flow [2023-08-03 22:10:29,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 80 transitions, 168 flow [2023-08-03 22:10:29,990 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:10:29,990 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 80 transitions, 168 flow [2023-08-03 22:10:29,991 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 80 transitions, 168 flow [2023-08-03 22:10:29,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 80 transitions, 168 flow [2023-08-03 22:10:29,997 INFO L124 PetriNetUnfolderBase]: 6/129 cut-off events. [2023-08-03 22:10:29,998 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 22:10:29,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 129 events. 6/129 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 219 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 93. Up to 6 conditions per place. [2023-08-03 22:10:29,999 INFO L119 LiptonReduction]: Number of co-enabled transitions 1300 [2023-08-03 22:10:31,614 INFO L134 LiptonReduction]: Checked pairs total: 3548 [2023-08-03 22:10:31,614 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-08-03 22:10:31,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 22:10:31,617 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;@5e94ad15, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:10:31,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 22:10:31,618 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:10:31,619 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-03 22:10:31,619 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:10:31,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:31,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 22:10:31,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 22:10:31,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:31,619 INFO L85 PathProgramCache]: Analyzing trace with hash 14839435, now seen corresponding path program 1 times [2023-08-03 22:10:31,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:31,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016561421] [2023-08-03 22:10:31,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:31,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:31,673 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 22:10:31,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:10:31,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016561421] [2023-08-03 22:10:31,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016561421] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:10:31,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:10:31,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 22:10:31,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004199097] [2023-08-03 22:10:31,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:10:31,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:10:31,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:10:31,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:10:31,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:10:31,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 153 [2023-08-03 22:10:31,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:31,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:10:31,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 153 [2023-08-03 22:10:31,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:10:31,763 INFO L124 PetriNetUnfolderBase]: 286/590 cut-off events. [2023-08-03 22:10:31,764 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-03 22:10:31,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1099 conditions, 590 events. 286/590 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2918 event pairs, 105 based on Foata normal form. 0/534 useless extension candidates. Maximal degree in co-relation 196. Up to 482 conditions per place. [2023-08-03 22:10:31,769 INFO L140 encePairwiseOnDemand]: 150/153 looper letters, 22 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-03 22:10:31,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 114 flow [2023-08-03 22:10:31,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:10:31,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:10:31,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-08-03 22:10:31,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5904139433551199 [2023-08-03 22:10:31,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-08-03 22:10:31,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-08-03 22:10:31,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:10:31,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-08-03 22:10:31,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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 22:10:31,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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 22:10:31,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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 22:10:31,775 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 54 flow. Second operand 3 states and 271 transitions. [2023-08-03 22:10:31,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 114 flow [2023-08-03 22:10:31,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 22:10:31,776 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 66 flow [2023-08-03 22:10:31,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-08-03 22:10:31,777 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2023-08-03 22:10:31,777 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 66 flow [2023-08-03 22:10:31,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:31,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:31,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:10:31,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 22:10:31,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 22:10:31,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:31,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1129435999, now seen corresponding path program 1 times [2023-08-03 22:10:31,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:31,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791589031] [2023-08-03 22:10:31,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:31,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:31,843 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 22:10:31,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:10:31,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791589031] [2023-08-03 22:10:31,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791589031] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:10:31,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954318273] [2023-08-03 22:10:31,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:31,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:10:31,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:10:31,847 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 22:10:31,862 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 22:10:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:31,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 22:10:31,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:10:31,945 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 22:10:31,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:10:31,957 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 22:10:31,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954318273] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:10:31,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:10:31,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 22:10:31,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605937120] [2023-08-03 22:10:31,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:10:31,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:10:31,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:10:31,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:10:31,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 22:10:31,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 153 [2023-08-03 22:10:31,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 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 22:10:31,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:10:31,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 153 [2023-08-03 22:10:31,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:10:32,040 INFO L124 PetriNetUnfolderBase]: 261/485 cut-off events. [2023-08-03 22:10:32,041 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-08-03 22:10:32,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 997 conditions, 485 events. 261/485 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2150 event pairs, 35 based on Foata normal form. 5/469 useless extension candidates. Maximal degree in co-relation 205. Up to 327 conditions per place. [2023-08-03 22:10:32,043 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 28 selfloop transitions, 3 changer transitions 1/37 dead transitions. [2023-08-03 22:10:32,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 156 flow [2023-08-03 22:10:32,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 22:10:32,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 22:10:32,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2023-08-03 22:10:32,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2023-08-03 22:10:32,044 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 357 transitions. [2023-08-03 22:10:32,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 357 transitions. [2023-08-03 22:10:32,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:10:32,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 357 transitions. [2023-08-03 22:10:32,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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 22:10:32,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 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 22:10:32,046 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 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 22:10:32,047 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 4 states and 357 transitions. [2023-08-03 22:10:32,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 156 flow [2023-08-03 22:10:32,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 22:10:32,051 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 78 flow [2023-08-03 22:10:32,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-08-03 22:10:32,056 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-08-03 22:10:32,058 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 78 flow [2023-08-03 22:10:32,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 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 22:10:32,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:32,058 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 22:10:32,065 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 22:10:32,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:10:32,263 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 22:10:32,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:32,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1154451154, now seen corresponding path program 1 times [2023-08-03 22:10:32,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:32,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413993338] [2023-08-03 22:10:32,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:32,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:10:32,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:10:32,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413993338] [2023-08-03 22:10:32,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413993338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:10:32,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:10:32,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 22:10:32,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226523149] [2023-08-03 22:10:32,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:10:32,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:10:32,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:10:32,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:10:32,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:10:32,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 153 [2023-08-03 22:10:32,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 22:10:32,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:10:32,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 153 [2023-08-03 22:10:32,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:10:32,427 INFO L124 PetriNetUnfolderBase]: 302/615 cut-off events. [2023-08-03 22:10:32,427 INFO L125 PetriNetUnfolderBase]: For 257/257 co-relation queries the response was YES. [2023-08-03 22:10:32,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1325 conditions, 615 events. 302/615 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3101 event pairs, 184 based on Foata normal form. 16/624 useless extension candidates. Maximal degree in co-relation 320. Up to 377 conditions per place. [2023-08-03 22:10:32,429 INFO L140 encePairwiseOnDemand]: 147/153 looper letters, 23 selfloop transitions, 4 changer transitions 1/32 dead transitions. [2023-08-03 22:10:32,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 150 flow [2023-08-03 22:10:32,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:10:32,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:10:32,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-08-03 22:10:32,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.599128540305011 [2023-08-03 22:10:32,431 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-08-03 22:10:32,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-08-03 22:10:32,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:10:32,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-08-03 22:10:32,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:32,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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 22:10:32,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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 22:10:32,435 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 78 flow. Second operand 3 states and 275 transitions. [2023-08-03 22:10:32,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 150 flow [2023-08-03 22:10:32,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 143 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 22:10:32,436 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 95 flow [2023-08-03 22:10:32,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2023-08-03 22:10:32,437 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-08-03 22:10:32,437 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 95 flow [2023-08-03 22:10:32,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 22:10:32,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:32,437 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:10:32,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 22:10:32,438 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 22:10:32,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:32,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1843903091, now seen corresponding path program 1 times [2023-08-03 22:10:32,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:32,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182312871] [2023-08-03 22:10:32,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:32,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:10:32,450 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 22:10:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:10:32,461 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 22:10:32,462 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 22:10:32,462 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-03 22:10:32,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 22:10:32,462 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-03 22:10:32,462 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE (2/2) [2023-08-03 22:10:32,464 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 22:10:32,464 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 22:10:32,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 10:10:32 BasicIcfg [2023-08-03 22:10:32,491 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 22:10:32,491 INFO L158 Benchmark]: Toolchain (without parser) took 7674.15ms. Allocated memory was 515.9MB in the beginning and 620.8MB in the end (delta: 104.9MB). Free memory was 476.2MB in the beginning and 455.9MB in the end (delta: 20.3MB). Peak memory consumption was 126.6MB. Max. memory is 16.0GB. [2023-08-03 22:10:32,491 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 362.8MB. Free memory is still 316.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 22:10:32,491 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.10ms. Allocated memory is still 515.9MB. Free memory was 476.2MB in the beginning and 456.3MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 22:10:32,491 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.50ms. Allocated memory is still 515.9MB. Free memory was 456.3MB in the beginning and 454.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 22:10:32,492 INFO L158 Benchmark]: Boogie Preprocessor took 35.54ms. Allocated memory is still 515.9MB. Free memory was 454.2MB in the beginning and 452.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 22:10:32,492 INFO L158 Benchmark]: RCFGBuilder took 333.81ms. Allocated memory is still 515.9MB. Free memory was 452.6MB in the beginning and 439.2MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 22:10:32,492 INFO L158 Benchmark]: TraceAbstraction took 6885.59ms. Allocated memory was 515.9MB in the beginning and 620.8MB in the end (delta: 104.9MB). Free memory was 438.6MB in the beginning and 455.9MB in the end (delta: -17.3MB). Peak memory consumption was 88.8MB. Max. memory is 16.0GB. [2023-08-03 22:10:32,493 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 362.8MB. Free memory is still 316.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 369.10ms. Allocated memory is still 515.9MB. Free memory was 476.2MB in the beginning and 456.3MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.50ms. Allocated memory is still 515.9MB. Free memory was 456.3MB in the beginning and 454.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.54ms. Allocated memory is still 515.9MB. Free memory was 454.2MB in the beginning and 452.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 333.81ms. Allocated memory is still 515.9MB. Free memory was 452.6MB in the beginning and 439.2MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 6885.59ms. Allocated memory was 515.9MB in the beginning and 620.8MB in the end (delta: 104.9MB). Free memory was 438.6MB in the beginning and 455.9MB in the end (delta: -17.3MB). Peak memory consumption was 88.8MB. 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, 55 PlacesBefore, 8 PlacesAfterwards, 52 TransitionsBefore, 5 TransitionsAfterwards, 200 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 50 TotalNumberOfCompositions, 158 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 158, independent: 158, independent conditional: 0, independent unconditional: 158, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 102, independent: 102, independent conditional: 0, independent unconditional: 102, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 158, independent: 56, independent conditional: 0, independent unconditional: 56, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 102, unknown conditional: 0, unknown unconditional: 102] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 68 PlacesBefore, 21 PlacesAfterwards, 63 TransitionsBefore, 16 TransitionsAfterwards, 620 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 50 TotalNumberOfCompositions, 1556 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 790, independent: 690, independent conditional: 0, independent unconditional: 690, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 306, independent: 290, independent conditional: 0, independent unconditional: 290, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 790, independent: 400, independent conditional: 0, independent unconditional: 400, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 306, unknown conditional: 0, unknown unconditional: 306] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, 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: 1.6s, 83 PlacesBefore, 27 PlacesAfterwards, 80 TransitionsBefore, 23 TransitionsAfterwards, 1300 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 62 TotalNumberOfCompositions, 3548 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1348, independent: 1173, independent conditional: 0, independent unconditional: 1173, dependent: 175, dependent conditional: 0, dependent unconditional: 175, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 622, independent: 591, independent conditional: 0, independent unconditional: 591, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1348, independent: 582, independent conditional: 0, independent unconditional: 582, dependent: 144, dependent conditional: 0, dependent unconditional: 144, unknown: 622, unknown conditional: 0, unknown unconditional: 622] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, 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 g = 42; [L683] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L684] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L694] 0 int r = __VERIFIER_nondet_int(); [L695] 0 int t; [L696] 0 pthread_t id[2]; [L697] 0 int asdf=0; VAL [A={3:0}, B={4:0}, asdf=0, g=42, id={5:0}, r=1] [L697] COND TRUE 0 asdf<2 [L697] FCALL, FORK 0 pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, B={4:0}, arg={0:0}, asdf=0, g=42, id={5:0}, pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0))=-1, r=1] [L697] 0 asdf++ VAL [A={3:0}, B={4:0}, arg={0:0}, asdf=1, g=42, id={5:0}, r=1] [L697] COND TRUE 0 asdf<2 [L697] FCALL, FORK 0 pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, B={4:0}, arg={0:0}, asdf=1, g=42, id={5:0}, pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0))=0, r=1] [L697] 0 asdf++ VAL [A={3:0}, B={4:0}, arg={0:0}, asdf=2, g=42, id={5:0}, r=1] [L697] COND FALSE 0 !(asdf<2) [L700] COND TRUE 0 \read(r) [L701] 0 g = 17 VAL [A={3:0}, B={4:0}, arg={0:0}, asdf=2, g=17, id={5:0}, r=1] [L705] 0 t = g [L706] CALL 0 __VERIFIER_assert(!(t == 17)) [L19] COND TRUE 0 !(cond) [L19] 0 reach_error() VAL [A={3:0}, B={4:0}, \old(cond)=0, arg={0:0}, cond=0, g=17] - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 89 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: 2.2s, OverallIterations: 1, TraceHistogramMax: 1, 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=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 100 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.0s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 5/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 100 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: 2.5s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 146 IncrementalHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 1 mSDtfsCounter, 146 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=3, InterpolantAutomatonStates: 10, 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 89 SizeOfPredicates, 0 NumberOfNonLiveVariables, 119 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 6/9 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 22:10:32,510 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...