./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array24_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array24_pattern.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b41c571dabcbc4670dde65107f8da5b879f13435b678b4e9a9cdcc7ef0066cf6 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 10:07:51,665 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 10:07:51,736 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 10:07:51,741 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 10:07:51,741 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 10:07:51,769 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 10:07:51,770 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 10:07:51,770 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 10:07:51,771 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 10:07:51,772 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 10:07:51,773 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 10:07:51,773 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 10:07:51,774 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 10:07:51,774 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 10:07:51,778 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 10:07:51,778 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 10:07:51,779 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 10:07:51,779 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 10:07:51,779 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 10:07:51,780 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 10:07:51,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 10:07:51,780 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 10:07:51,781 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 10:07:51,781 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 10:07:51,781 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 10:07:51,781 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 10:07:51,781 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 10:07:51,782 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 10:07:51,782 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 10:07:51,782 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 10:07:51,782 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 10:07:51,783 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 10:07:51,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:07:51,783 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 10:07:51,783 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 10:07:51,783 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 10:07:51,784 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 10:07:51,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 10:07:51,784 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 10:07:51,786 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 10:07:51,786 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 10:07:51,787 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 10:07:51,787 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b41c571dabcbc4670dde65107f8da5b879f13435b678b4e9a9cdcc7ef0066cf6 [2024-11-08 10:07:52,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 10:07:52,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 10:07:52,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 10:07:52,088 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 10:07:52,089 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 10:07:52,090 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array24_pattern.c [2024-11-08 10:07:53,451 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 10:07:53,652 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 10:07:53,653 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array24_pattern.c [2024-11-08 10:07:53,659 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a61a8eac3/8ef94c3d161f41a193fa432ddcf33f0d/FLAG266761f7d [2024-11-08 10:07:53,670 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a61a8eac3/8ef94c3d161f41a193fa432ddcf33f0d [2024-11-08 10:07:53,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 10:07:53,673 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 10:07:53,674 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 10:07:53,675 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 10:07:53,680 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 10:07:53,680 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:07:53" (1/1) ... [2024-11-08 10:07:53,681 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2570002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:07:53, skipping insertion in model container [2024-11-08 10:07:53,681 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:07:53" (1/1) ... [2024-11-08 10:07:53,706 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 10:07:53,885 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array24_pattern.c[1359,1372] [2024-11-08 10:07:53,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:07:53,927 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 10:07:53,940 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array24_pattern.c[1359,1372] [2024-11-08 10:07:53,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:07:53,973 INFO L204 MainTranslator]: Completed translation [2024-11-08 10:07:53,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:07:53 WrapperNode [2024-11-08 10:07:53,974 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 10:07:53,975 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 10:07:53,976 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 10:07:53,976 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 10:07:53,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:07:53" (1/1) ... [2024-11-08 10:07:53,996 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:07:53" (1/1) ... [2024-11-08 10:07:54,020 INFO L138 Inliner]: procedures = 17, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 107 [2024-11-08 10:07:54,021 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 10:07:54,022 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 10:07:54,022 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 10:07:54,022 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 10:07:54,032 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:07:53" (1/1) ... [2024-11-08 10:07:54,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:07:53" (1/1) ... [2024-11-08 10:07:54,035 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:07:53" (1/1) ... [2024-11-08 10:07:54,046 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-08 10:07:54,047 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:07:53" (1/1) ... [2024-11-08 10:07:54,047 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:07:53" (1/1) ... [2024-11-08 10:07:54,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:07:53" (1/1) ... [2024-11-08 10:07:54,057 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:07:53" (1/1) ... [2024-11-08 10:07:54,059 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:07:53" (1/1) ... [2024-11-08 10:07:54,060 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:07:53" (1/1) ... [2024-11-08 10:07:54,064 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 10:07:54,065 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 10:07:54,065 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 10:07:54,066 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 10:07:54,067 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:07:53" (1/1) ... [2024-11-08 10:07:54,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:07:54,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:07:54,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 10:07:54,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 10:07:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2024-11-08 10:07:54,139 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2024-11-08 10:07:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 10:07:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-08 10:07:54,139 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-08 10:07:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 10:07:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 10:07:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 10:07:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 10:07:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 10:07:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 10:07:54,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 10:07:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 10:07:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 10:07:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 10:07:54,214 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 10:07:54,215 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 10:07:54,462 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-11-08 10:07:54,463 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 10:07:54,477 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 10:07:54,478 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-08 10:07:54,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:07:54 BoogieIcfgContainer [2024-11-08 10:07:54,478 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 10:07:54,480 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 10:07:54,480 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 10:07:54,483 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 10:07:54,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 10:07:53" (1/3) ... [2024-11-08 10:07:54,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6797ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:07:54, skipping insertion in model container [2024-11-08 10:07:54,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:07:53" (2/3) ... [2024-11-08 10:07:54,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6797ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:07:54, skipping insertion in model container [2024-11-08 10:07:54,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:07:54" (3/3) ... [2024-11-08 10:07:54,486 INFO L112 eAbstractionObserver]: Analyzing ICFG array24_pattern.c [2024-11-08 10:07:54,501 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 10:07:54,502 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 10:07:54,548 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 10:07:54,554 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@30cea6fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 10:07:54,554 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 10:07:54,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 10:07:54,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 10:07:54,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:07:54,562 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:07:54,562 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:07:54,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:07:54,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2136211159, now seen corresponding path program 1 times [2024-11-08 10:07:54,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:07:54,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919749504] [2024-11-08 10:07:54,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:07:54,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:07:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:54,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:07:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:54,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:07:54,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:07:54,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919749504] [2024-11-08 10:07:54,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919749504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:07:54,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:07:54,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:07:54,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292547857] [2024-11-08 10:07:54,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:07:54,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 10:07:54,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:07:54,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 10:07:54,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 10:07:54,801 INFO L87 Difference]: Start difference. First operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 10:07:54,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:07:54,825 INFO L93 Difference]: Finished difference Result 77 states and 115 transitions. [2024-11-08 10:07:54,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 10:07:54,828 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-08 10:07:54,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:07:54,836 INFO L225 Difference]: With dead ends: 77 [2024-11-08 10:07:54,836 INFO L226 Difference]: Without dead ends: 36 [2024-11-08 10:07:54,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 10:07:54,843 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:07:54,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:07:54,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-08 10:07:54,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-08 10:07:54,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 10:07:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2024-11-08 10:07:54,887 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 15 [2024-11-08 10:07:54,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:07:54,888 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2024-11-08 10:07:54,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 10:07:54,888 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2024-11-08 10:07:54,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 10:07:54,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:07:54,891 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:07:54,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 10:07:54,892 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:07:54,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:07:54,894 INFO L85 PathProgramCache]: Analyzing trace with hash -699940082, now seen corresponding path program 1 times [2024-11-08 10:07:54,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:07:54,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123242226] [2024-11-08 10:07:54,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:07:54,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:07:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:55,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:07:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:55,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 10:07:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:55,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:07:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:55,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 10:07:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:55,271 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:07:55,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:07:55,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123242226] [2024-11-08 10:07:55,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123242226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:07:55,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791741781] [2024-11-08 10:07:55,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:07:55,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:07:55,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:07:55,275 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) [2024-11-08 10:07:55,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 10:07:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:55,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 10:07:55,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:07:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 10:07:55,510 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:07:55,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791741781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:07:55,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:07:55,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-08 10:07:55,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691898424] [2024-11-08 10:07:55,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:07:55,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 10:07:55,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:07:55,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 10:07:55,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:07:55,518 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 10:07:55,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:07:55,613 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2024-11-08 10:07:55,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 10:07:55,614 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2024-11-08 10:07:55,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:07:55,616 INFO L225 Difference]: With dead ends: 82 [2024-11-08 10:07:55,617 INFO L226 Difference]: Without dead ends: 48 [2024-11-08 10:07:55,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:07:55,620 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:07:55,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 106 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:07:55,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-08 10:07:55,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2024-11-08 10:07:55,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 10:07:55,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2024-11-08 10:07:55,631 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 35 [2024-11-08 10:07:55,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:07:55,632 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2024-11-08 10:07:55,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 10:07:55,633 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2024-11-08 10:07:55,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 10:07:55,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:07:55,636 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:07:55,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 10:07:55,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:07:55,837 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:07:55,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:07:55,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1511137102, now seen corresponding path program 1 times [2024-11-08 10:07:55,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:07:55,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692361657] [2024-11-08 10:07:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:07:55,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:07:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:55,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:07:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:55,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 10:07:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:55,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 10:07:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:55,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:07:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:55,999 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 10:07:56,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:07:56,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692361657] [2024-11-08 10:07:56,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692361657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:07:56,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:07:56,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:07:56,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324639898] [2024-11-08 10:07:56,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:07:56,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:07:56,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:07:56,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:07:56,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:07:56,006 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:07:56,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:07:56,052 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2024-11-08 10:07:56,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:07:56,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2024-11-08 10:07:56,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:07:56,054 INFO L225 Difference]: With dead ends: 80 [2024-11-08 10:07:56,054 INFO L226 Difference]: Without dead ends: 48 [2024-11-08 10:07:56,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:07:56,056 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 13 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:07:56,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 72 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:07:56,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-08 10:07:56,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2024-11-08 10:07:56,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 10:07:56,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2024-11-08 10:07:56,067 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 38 [2024-11-08 10:07:56,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:07:56,067 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2024-11-08 10:07:56,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:07:56,068 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2024-11-08 10:07:56,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-08 10:07:56,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:07:56,069 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:07:56,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 10:07:56,070 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:07:56,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:07:56,085 INFO L85 PathProgramCache]: Analyzing trace with hash -50149008, now seen corresponding path program 1 times [2024-11-08 10:07:56,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:07:56,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696381257] [2024-11-08 10:07:56,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:07:56,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:07:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:56,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:07:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:56,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:07:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:56,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 10:07:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:56,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 10:07:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 10:07:56,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:07:56,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696381257] [2024-11-08 10:07:56,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696381257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:07:56,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756180239] [2024-11-08 10:07:56,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:07:56,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:07:56,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:07:56,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:07:56,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 10:07:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:56,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 10:07:56,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:07:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 10:07:56,341 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:07:56,418 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 10:07:56,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756180239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:07:56,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:07:56,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-08 10:07:56,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205644832] [2024-11-08 10:07:56,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:07:56,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 10:07:56,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:07:56,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 10:07:56,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-08 10:07:56,423 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 10:07:56,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:07:56,536 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2024-11-08 10:07:56,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 10:07:56,537 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 40 [2024-11-08 10:07:56,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:07:56,538 INFO L225 Difference]: With dead ends: 54 [2024-11-08 10:07:56,538 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 10:07:56,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:07:56,539 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 47 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:07:56,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 86 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:07:56,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 10:07:56,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2024-11-08 10:07:56,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 10:07:56,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2024-11-08 10:07:56,547 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 40 [2024-11-08 10:07:56,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:07:56,547 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2024-11-08 10:07:56,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 10:07:56,548 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2024-11-08 10:07:56,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 10:07:56,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:07:56,549 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:07:56,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 10:07:56,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-08 10:07:56,754 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:07:56,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:07:56,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1300942485, now seen corresponding path program 1 times [2024-11-08 10:07:56,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:07:56,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191563391] [2024-11-08 10:07:56,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:07:56,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:07:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:56,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:07:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:56,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:07:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:56,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 10:07:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:56,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 10:07:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 10:07:56,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:07:56,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191563391] [2024-11-08 10:07:56,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191563391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:07:56,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948644527] [2024-11-08 10:07:56,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:07:56,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:07:56,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:07:56,898 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:07:56,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 10:07:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:56,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 10:07:56,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:07:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:07:57,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:07:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 10:07:57,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948644527] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:07:57,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:07:57,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2024-11-08 10:07:57,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071893307] [2024-11-08 10:07:57,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:07:57,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 10:07:57,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:07:57,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 10:07:57,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-08 10:07:57,195 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 10:07:57,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:07:57,435 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2024-11-08 10:07:57,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 10:07:57,436 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 45 [2024-11-08 10:07:57,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:07:57,437 INFO L225 Difference]: With dead ends: 86 [2024-11-08 10:07:57,439 INFO L226 Difference]: Without dead ends: 52 [2024-11-08 10:07:57,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2024-11-08 10:07:57,440 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 48 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:07:57,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 136 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:07:57,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-08 10:07:57,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2024-11-08 10:07:57,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 10:07:57,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2024-11-08 10:07:57,453 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 45 [2024-11-08 10:07:57,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:07:57,454 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2024-11-08 10:07:57,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 10:07:57,454 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2024-11-08 10:07:57,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 10:07:57,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:07:57,458 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:07:57,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 10:07:57,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:07:57,659 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:07:57,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:07:57,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1544610617, now seen corresponding path program 2 times [2024-11-08 10:07:57,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:07:57,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239797247] [2024-11-08 10:07:57,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:07:57,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:07:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:57,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:07:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:57,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-08 10:07:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:57,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-08 10:07:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:57,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 10:07:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:07:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 10:07:57,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:07:57,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239797247] [2024-11-08 10:07:57,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239797247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:07:57,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807435469] [2024-11-08 10:07:57,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:07:57,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:07:57,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:07:57,813 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:07:57,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 10:07:57,879 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:07:57,880 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:07:57,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 10:07:57,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:07:57,951 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 10:07:57,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:07:58,016 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 10:07:58,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807435469] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:07:58,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:07:58,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-08 10:07:58,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379901732] [2024-11-08 10:07:58,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:07:58,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 10:07:58,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:07:58,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 10:07:58,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 10:07:58,019 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 10:07:58,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:07:58,165 INFO L93 Difference]: Finished difference Result 106 states and 128 transitions. [2024-11-08 10:07:58,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 10:07:58,165 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 49 [2024-11-08 10:07:58,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:07:58,166 INFO L225 Difference]: With dead ends: 106 [2024-11-08 10:07:58,168 INFO L226 Difference]: Without dead ends: 74 [2024-11-08 10:07:58,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 96 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-08 10:07:58,169 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 41 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:07:58,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 177 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:07:58,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-08 10:07:58,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2024-11-08 10:07:58,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 10:07:58,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2024-11-08 10:07:58,187 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 49 [2024-11-08 10:07:58,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:07:58,190 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2024-11-08 10:07:58,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 10:07:58,191 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2024-11-08 10:07:58,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 10:07:58,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:07:58,192 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:07:58,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 10:07:58,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:07:58,393 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:07:58,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:07:58,393 INFO L85 PathProgramCache]: Analyzing trace with hash -725408594, now seen corresponding path program 3 times [2024-11-08 10:07:58,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:07:58,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728940750] [2024-11-08 10:07:58,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:07:58,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:07:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 10:07:58,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758255626] [2024-11-08 10:07:58,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:07:58,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:07:58,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:07:58,433 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:07:58,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 10:07:58,894 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-08 10:07:58,894 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:07:58,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-08 10:07:58,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:07:58,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 10:07:59,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 10:07:59,168 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2024-11-08 10:07:59,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2024-11-08 10:07:59,270 INFO L349 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2024-11-08 10:07:59,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 44 [2024-11-08 10:08:00,223 INFO L349 Elim1Store]: treesize reduction 190, result has 15.6 percent of original size [2024-11-08 10:08:00,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 66 treesize of output 62 [2024-11-08 10:08:00,900 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:08:00,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:08:02,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 170 [2024-11-08 10:08:02,860 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:08:02,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 96645 treesize of output 89477 [2024-11-08 10:08:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 10:08:03,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:08:03,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728940750] [2024-11-08 10:08:03,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 10:08:03,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758255626] [2024-11-08 10:08:03,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758255626] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:08:03,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 10:08:03,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30] total 57 [2024-11-08 10:08:03,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400022477] [2024-11-08 10:08:03,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 10:08:03,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-08 10:08:03,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:08:03,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-08 10:08:03,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=527, Invalid=2665, Unknown=0, NotChecked=0, Total=3192 [2024-11-08 10:08:03,379 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 57 states, 57 states have (on average 1.6666666666666667) internal successors, (95), 55 states have internal predecessors, (95), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-08 10:08:09,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:08:09,449 INFO L93 Difference]: Finished difference Result 239 states and 300 transitions. [2024-11-08 10:08:09,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-08 10:08:09,449 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.6666666666666667) internal successors, (95), 55 states have internal predecessors, (95), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 63 [2024-11-08 10:08:09,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:08:09,452 INFO L225 Difference]: With dead ends: 239 [2024-11-08 10:08:09,452 INFO L226 Difference]: Without dead ends: 194 [2024-11-08 10:08:09,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 63 SyntacticMatches, 6 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3383 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1884, Invalid=8418, Unknown=0, NotChecked=0, Total=10302 [2024-11-08 10:08:09,458 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 235 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 10:08:09,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 608 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1642 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 10:08:09,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-08 10:08:09,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 151. [2024-11-08 10:08:09,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 131 states have (on average 1.213740458015267) internal successors, (159), 131 states have internal predecessors, (159), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) [2024-11-08 10:08:09,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 187 transitions. [2024-11-08 10:08:09,507 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 187 transitions. Word has length 63 [2024-11-08 10:08:09,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:08:09,509 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 187 transitions. [2024-11-08 10:08:09,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.6666666666666667) internal successors, (95), 55 states have internal predecessors, (95), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-08 10:08:09,509 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 187 transitions. [2024-11-08 10:08:09,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 10:08:09,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:08:09,511 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:08:09,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 10:08:09,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:08:09,712 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:08:09,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:08:09,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1495587368, now seen corresponding path program 1 times [2024-11-08 10:08:09,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:08:09,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809972971] [2024-11-08 10:08:09,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:08:09,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:08:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:09,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:08:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:09,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 10:08:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:09,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 10:08:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:09,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-08 10:08:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:09,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-08 10:08:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 10:08:09,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:08:09,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809972971] [2024-11-08 10:08:09,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809972971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:08:09,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:08:09,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 10:08:09,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309065267] [2024-11-08 10:08:09,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:08:09,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 10:08:09,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:08:09,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 10:08:09,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:08:09,844 INFO L87 Difference]: Start difference. First operand 151 states and 187 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-08 10:08:09,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:08:09,886 INFO L93 Difference]: Finished difference Result 198 states and 248 transitions. [2024-11-08 10:08:09,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 10:08:09,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2024-11-08 10:08:09,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:08:09,887 INFO L225 Difference]: With dead ends: 198 [2024-11-08 10:08:09,888 INFO L226 Difference]: Without dead ends: 159 [2024-11-08 10:08:09,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:08:09,889 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:08:09,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 166 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:08:09,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-08 10:08:09,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2024-11-08 10:08:09,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 137 states have (on average 1.2043795620437956) internal successors, (165), 135 states have internal predecessors, (165), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (19), 17 states have call predecessors, (19), 13 states have call successors, (19) [2024-11-08 10:08:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 197 transitions. [2024-11-08 10:08:09,917 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 197 transitions. Word has length 69 [2024-11-08 10:08:09,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:08:09,918 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 197 transitions. [2024-11-08 10:08:09,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-08 10:08:09,918 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 197 transitions. [2024-11-08 10:08:09,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 10:08:09,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:08:09,920 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:08:09,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 10:08:09,920 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:08:09,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:08:09,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1526607175, now seen corresponding path program 1 times [2024-11-08 10:08:09,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:08:09,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907378833] [2024-11-08 10:08:09,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:08:09,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:08:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:10,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:08:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:10,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 10:08:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:10,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 10:08:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:10,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-08 10:08:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:10,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-08 10:08:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 5 proven. 23 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-08 10:08:10,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:08:10,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907378833] [2024-11-08 10:08:10,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907378833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:08:10,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793255943] [2024-11-08 10:08:10,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:08:10,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:08:10,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:08:10,163 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:08:10,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 10:08:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:10,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 10:08:10,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:08:10,407 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 10:08:10,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:08:10,570 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 5 proven. 23 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-08 10:08:10,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793255943] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:08:10,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:08:10,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 21 [2024-11-08 10:08:10,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216830410] [2024-11-08 10:08:10,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:08:10,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 10:08:10,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:08:10,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 10:08:10,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-08 10:08:10,572 INFO L87 Difference]: Start difference. First operand 158 states and 197 transitions. Second operand has 21 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 5 states have call successors, (11), 4 states have call predecessors, (11), 8 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-08 10:08:10,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:08:10,909 INFO L93 Difference]: Finished difference Result 465 states and 577 transitions. [2024-11-08 10:08:10,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 10:08:10,909 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 5 states have call successors, (11), 4 states have call predecessors, (11), 8 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 69 [2024-11-08 10:08:10,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:08:10,912 INFO L225 Difference]: With dead ends: 465 [2024-11-08 10:08:10,912 INFO L226 Difference]: Without dead ends: 349 [2024-11-08 10:08:10,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 132 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2024-11-08 10:08:10,913 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 58 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:08:10,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 314 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:08:10,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-11-08 10:08:10,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 269. [2024-11-08 10:08:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 227 states have (on average 1.224669603524229) internal successors, (278), 227 states have internal predecessors, (278), 27 states have call successors, (27), 11 states have call predecessors, (27), 14 states have return successors, (35), 30 states have call predecessors, (35), 27 states have call successors, (35) [2024-11-08 10:08:10,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 340 transitions. [2024-11-08 10:08:10,957 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 340 transitions. Word has length 69 [2024-11-08 10:08:10,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:08:10,957 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 340 transitions. [2024-11-08 10:08:10,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 5 states have call successors, (11), 4 states have call predecessors, (11), 8 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-08 10:08:10,958 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 340 transitions. [2024-11-08 10:08:10,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 10:08:10,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:08:10,959 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:08:10,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 10:08:11,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:08:11,161 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:08:11,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:08:11,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1878097068, now seen corresponding path program 4 times [2024-11-08 10:08:11,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:08:11,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377524288] [2024-11-08 10:08:11,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:08:11,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:08:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:11,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:08:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:11,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 10:08:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:11,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 10:08:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:11,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-08 10:08:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:11,344 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 33 proven. 42 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-08 10:08:11,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:08:11,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377524288] [2024-11-08 10:08:11,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377524288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:08:11,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920256376] [2024-11-08 10:08:11,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:08:11,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:08:11,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:08:11,346 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:08:11,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 10:08:11,418 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:08:11,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:08:11,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 10:08:11,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:08:11,521 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 60 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 10:08:11,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:08:11,607 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 39 proven. 30 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-08 10:08:11,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920256376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:08:11,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:08:11,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 16 [2024-11-08 10:08:11,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308688024] [2024-11-08 10:08:11,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:08:11,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 10:08:11,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:08:11,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 10:08:11,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-11-08 10:08:11,610 INFO L87 Difference]: Start difference. First operand 269 states and 340 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 10:08:11,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:08:11,818 INFO L93 Difference]: Finished difference Result 454 states and 562 transitions. [2024-11-08 10:08:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 10:08:11,819 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2024-11-08 10:08:11,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:08:11,821 INFO L225 Difference]: With dead ends: 454 [2024-11-08 10:08:11,822 INFO L226 Difference]: Without dead ends: 286 [2024-11-08 10:08:11,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 136 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-08 10:08:11,824 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 22 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:08:11,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 188 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:08:11,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-08 10:08:11,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 268. [2024-11-08 10:08:11,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 233 states have (on average 1.1931330472103003) internal successors, (278), 232 states have internal predecessors, (278), 23 states have call successors, (23), 8 states have call predecessors, (23), 11 states have return successors, (31), 27 states have call predecessors, (31), 23 states have call successors, (31) [2024-11-08 10:08:11,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 332 transitions. [2024-11-08 10:08:11,875 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 332 transitions. Word has length 69 [2024-11-08 10:08:11,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:08:11,875 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 332 transitions. [2024-11-08 10:08:11,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 10:08:11,875 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 332 transitions. [2024-11-08 10:08:11,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 10:08:11,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:08:11,878 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:08:11,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 10:08:12,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:08:12,083 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:08:12,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:08:12,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1948273415, now seen corresponding path program 2 times [2024-11-08 10:08:12,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:08:12,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659874463] [2024-11-08 10:08:12,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:08:12,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:08:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:12,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:08:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:12,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 10:08:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:12,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 10:08:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:12,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 10:08:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:12,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-08 10:08:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:12,231 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 1 proven. 37 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 10:08:12,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:08:12,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659874463] [2024-11-08 10:08:12,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659874463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:08:12,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852546870] [2024-11-08 10:08:12,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:08:12,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:08:12,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:08:12,234 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:08:12,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 10:08:12,315 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:08:12,315 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:08:12,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 10:08:12,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:08:12,423 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-08 10:08:12,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:08:12,518 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-08 10:08:12,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852546870] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:08:12,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:08:12,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-08 10:08:12,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411309210] [2024-11-08 10:08:12,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:08:12,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 10:08:12,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:08:12,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 10:08:12,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-11-08 10:08:12,520 INFO L87 Difference]: Start difference. First operand 268 states and 332 transitions. Second operand has 20 states, 20 states have (on average 3.6) internal successors, (72), 20 states have internal predecessors, (72), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-08 10:08:12,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:08:12,808 INFO L93 Difference]: Finished difference Result 365 states and 447 transitions. [2024-11-08 10:08:12,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 10:08:12,809 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.6) internal successors, (72), 20 states have internal predecessors, (72), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 73 [2024-11-08 10:08:12,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:08:12,811 INFO L225 Difference]: With dead ends: 365 [2024-11-08 10:08:12,811 INFO L226 Difference]: Without dead ends: 262 [2024-11-08 10:08:12,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 142 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2024-11-08 10:08:12,812 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 53 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:08:12,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 260 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:08:12,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-08 10:08:12,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 230. [2024-11-08 10:08:12,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 202 states have (on average 1.198019801980198) internal successors, (242), 202 states have internal predecessors, (242), 19 states have call successors, (19), 6 states have call predecessors, (19), 8 states have return successors, (25), 21 states have call predecessors, (25), 19 states have call successors, (25) [2024-11-08 10:08:12,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 286 transitions. [2024-11-08 10:08:12,856 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 286 transitions. Word has length 73 [2024-11-08 10:08:12,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:08:12,856 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 286 transitions. [2024-11-08 10:08:12,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.6) internal successors, (72), 20 states have internal predecessors, (72), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-08 10:08:12,857 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 286 transitions. [2024-11-08 10:08:12,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 10:08:12,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:08:12,858 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:08:12,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 10:08:13,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 10:08:13,059 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:08:13,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:08:13,059 INFO L85 PathProgramCache]: Analyzing trace with hash 334053606, now seen corresponding path program 2 times [2024-11-08 10:08:13,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:08:13,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921520728] [2024-11-08 10:08:13,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:08:13,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:08:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:13,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:08:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:13,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:08:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:13,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 10:08:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:13,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-08 10:08:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:13,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-08 10:08:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-08 10:08:13,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:08:13,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921520728] [2024-11-08 10:08:13,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921520728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:08:13,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40952407] [2024-11-08 10:08:13,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:08:13,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:08:13,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:08:13,151 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:08:13,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 10:08:13,279 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:08:13,279 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:08:13,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 10:08:13,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:08:13,381 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 43 proven. 17 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-08 10:08:13,381 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:08:13,477 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 33 proven. 19 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-08 10:08:13,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40952407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:08:13,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:08:13,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 18 [2024-11-08 10:08:13,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74263440] [2024-11-08 10:08:13,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:08:13,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 10:08:13,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:08:13,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 10:08:13,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-08 10:08:13,480 INFO L87 Difference]: Start difference. First operand 230 states and 286 transitions. Second operand has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 17 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-08 10:08:13,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:08:13,704 INFO L93 Difference]: Finished difference Result 404 states and 498 transitions. [2024-11-08 10:08:13,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 10:08:13,704 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 17 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 76 [2024-11-08 10:08:13,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:08:13,705 INFO L225 Difference]: With dead ends: 404 [2024-11-08 10:08:13,706 INFO L226 Difference]: Without dead ends: 191 [2024-11-08 10:08:13,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2024-11-08 10:08:13,707 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 35 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:08:13,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 315 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:08:13,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-08 10:08:13,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 182. [2024-11-08 10:08:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 161 states have (on average 1.15527950310559) internal successors, (186), 159 states have internal predecessors, (186), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (17), 16 states have call predecessors, (17), 13 states have call successors, (17) [2024-11-08 10:08:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2024-11-08 10:08:13,739 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 76 [2024-11-08 10:08:13,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:08:13,739 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2024-11-08 10:08:13,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 17 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-08 10:08:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2024-11-08 10:08:13,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-08 10:08:13,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:08:13,740 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:08:13,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 10:08:13,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:08:13,941 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:08:13,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:08:13,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1732942363, now seen corresponding path program 3 times [2024-11-08 10:08:13,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:08:13,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683678793] [2024-11-08 10:08:13,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:08:13,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:08:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:14,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:08:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:14,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-08 10:08:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:14,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 10:08:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:14,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 10:08:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:14,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 10:08:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:08:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 19 proven. 48 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-08 10:08:14,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:08:14,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683678793] [2024-11-08 10:08:14,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683678793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:08:14,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142004761] [2024-11-08 10:08:14,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:08:14,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:08:14,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:08:14,099 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:08:14,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 10:08:14,311 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-08 10:08:14,311 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:08:14,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 10:08:14,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:08:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-08 10:08:14,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:08:14,672 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-08 10:08:14,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142004761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:08:14,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:08:14,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 11] total 24 [2024-11-08 10:08:14,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778014978] [2024-11-08 10:08:14,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:08:14,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 10:08:14,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:08:14,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 10:08:14,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2024-11-08 10:08:14,674 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand has 24 states, 24 states have (on average 3.5) internal successors, (84), 24 states have internal predecessors, (84), 4 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-08 10:08:15,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:08:15,057 INFO L93 Difference]: Finished difference Result 192 states and 225 transitions. [2024-11-08 10:08:15,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 10:08:15,057 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5) internal successors, (84), 24 states have internal predecessors, (84), 4 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 82 [2024-11-08 10:08:15,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:08:15,058 INFO L225 Difference]: With dead ends: 192 [2024-11-08 10:08:15,059 INFO L226 Difference]: Without dead ends: 136 [2024-11-08 10:08:15,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 160 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=246, Invalid=1086, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 10:08:15,060 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 100 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:08:15,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 228 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:08:15,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-08 10:08:15,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 94. [2024-11-08 10:08:15,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 83 states have internal predecessors, (96), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-08 10:08:15,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2024-11-08 10:08:15,081 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 82 [2024-11-08 10:08:15,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:08:15,081 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2024-11-08 10:08:15,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5) internal successors, (84), 24 states have internal predecessors, (84), 4 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-08 10:08:15,082 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2024-11-08 10:08:15,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-08 10:08:15,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:08:15,082 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:08:15,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 10:08:15,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 10:08:15,283 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:08:15,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:08:15,284 INFO L85 PathProgramCache]: Analyzing trace with hash 599706749, now seen corresponding path program 5 times [2024-11-08 10:08:15,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:08:15,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617748928] [2024-11-08 10:08:15,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:08:15,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:08:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 10:08:15,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132271759] [2024-11-08 10:08:15,320 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:08:15,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:08:15,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:08:15,321 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:08:15,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 10:08:16,112 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-08 10:08:16,112 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:08:16,115 WARN L253 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 148 conjuncts are in the unsatisfiable core [2024-11-08 10:08:16,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:08:16,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 10:08:16,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 10:08:16,255 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:08:16,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-08 10:08:16,373 INFO L349 Elim1Store]: treesize reduction 48, result has 31.4 percent of original size [2024-11-08 10:08:16,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 40 [2024-11-08 10:08:16,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:08:16,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:08:16,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:08:16,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:08:16,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:08:16,473 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-08 10:08:16,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 54 [2024-11-08 10:08:16,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:08:16,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:08:16,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:08:16,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:08:16,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:08:16,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:08:16,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:08:16,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:08:16,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:08:16,584 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:08:16,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-08 10:08:16,878 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:08:16,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-11-08 10:08:16,998 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:08:16,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2024-11-08 10:08:17,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:08:17,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 88 [2024-11-08 10:08:18,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:08:18,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:08:18,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:08:19,151 INFO L349 Elim1Store]: treesize reduction 576, result has 12.9 percent of original size [2024-11-08 10:08:19,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 39 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 183 case distinctions, treesize of input 154 treesize of output 194 [2024-11-08 10:08:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 8 proven. 222 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:08:20,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:08:33,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 785 treesize of output 767 [2024-11-08 10:08:34,153 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:08:34,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 580436056458063 treesize of output 543052661113679