/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/reducercommutativity/rangesum10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 17:05:35,603 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 17:05:35,693 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 17:05:35,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 17:05:35,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 17:05:35,720 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 17:05:35,721 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 17:05:35,721 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 17:05:35,721 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 17:05:35,722 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 17:05:35,722 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 17:05:35,722 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 17:05:35,723 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 17:05:35,723 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 17:05:35,724 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 17:05:35,724 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 17:05:35,724 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 17:05:35,725 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 17:05:35,725 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 17:05:35,725 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 17:05:35,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 17:05:35,728 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 17:05:35,728 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 17:05:35,728 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 17:05:35,728 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 17:05:35,728 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 17:05:35,729 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 17:05:35,729 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 17:05:35,729 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 17:05:35,729 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 17:05:35,730 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 17:05:35,730 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 17:05:35,730 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:05:35,730 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 17:05:35,730 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 17:05:35,731 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 17:05:35,731 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 17:05:35,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 17:05:35,731 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 17:05:35,732 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 17:05:35,732 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 17:05:35,733 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 17:05:35,733 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 17:05:35,733 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 17:05:35,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 17:05:35,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 17:05:35,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 17:05:35,995 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 17:05:35,996 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 17:05:35,997 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum10.i [2023-12-15 17:05:37,156 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 17:05:37,333 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 17:05:37,333 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum10.i [2023-12-15 17:05:37,338 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26688da0a/0ca2c7accde744efad355d0138213028/FLAGf21366f45 [2023-12-15 17:05:37,350 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26688da0a/0ca2c7accde744efad355d0138213028 [2023-12-15 17:05:37,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 17:05:37,354 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 17:05:37,356 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 17:05:37,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 17:05:37,362 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 17:05:37,362 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:05:37" (1/1) ... [2023-12-15 17:05:37,363 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e9404bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:05:37, skipping insertion in model container [2023-12-15 17:05:37,363 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:05:37" (1/1) ... [2023-12-15 17:05:37,384 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 17:05:37,555 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum10.i[1465,1478] [2023-12-15 17:05:37,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:05:37,571 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 17:05:37,607 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum10.i[1465,1478] [2023-12-15 17:05:37,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:05:37,621 INFO L206 MainTranslator]: Completed translation [2023-12-15 17:05:37,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:05:37 WrapperNode [2023-12-15 17:05:37,621 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 17:05:37,622 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 17:05:37,623 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 17:05:37,623 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 17:05:37,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:05:37" (1/1) ... [2023-12-15 17:05:37,644 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:05:37" (1/1) ... [2023-12-15 17:05:37,669 INFO L138 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-12-15 17:05:37,669 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 17:05:37,670 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 17:05:37,670 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 17:05:37,670 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 17:05:37,681 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:05:37" (1/1) ... [2023-12-15 17:05:37,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:05:37" (1/1) ... [2023-12-15 17:05:37,686 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:05:37" (1/1) ... [2023-12-15 17:05:37,702 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2023-12-15 17:05:37,702 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:05:37" (1/1) ... [2023-12-15 17:05:37,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:05:37" (1/1) ... [2023-12-15 17:05:37,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:05:37" (1/1) ... [2023-12-15 17:05:37,711 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:05:37" (1/1) ... [2023-12-15 17:05:37,712 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:05:37" (1/1) ... [2023-12-15 17:05:37,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:05:37" (1/1) ... [2023-12-15 17:05:37,722 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 17:05:37,723 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 17:05:37,723 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 17:05:37,723 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 17:05:37,724 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:05:37" (1/1) ... [2023-12-15 17:05:37,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:05:37,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:05:37,753 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) [2023-12-15 17:05:37,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 17:05:37,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 17:05:37,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 17:05:37,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-15 17:05:37,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 17:05:37,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 17:05:37,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 17:05:37,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 17:05:37,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 17:05:37,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 17:05:37,792 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2023-12-15 17:05:37,770 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 [2023-12-15 17:05:37,793 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2023-12-15 17:05:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-15 17:05:37,855 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 17:05:37,857 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 17:05:38,002 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 17:05:38,027 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 17:05:38,027 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-15 17:05:38,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:05:38 BoogieIcfgContainer [2023-12-15 17:05:38,027 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 17:05:38,030 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 17:05:38,030 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 17:05:38,032 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 17:05:38,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:05:37" (1/3) ... [2023-12-15 17:05:38,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175defa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:05:38, skipping insertion in model container [2023-12-15 17:05:38,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:05:37" (2/3) ... [2023-12-15 17:05:38,034 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175defa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:05:38, skipping insertion in model container [2023-12-15 17:05:38,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:05:38" (3/3) ... [2023-12-15 17:05:38,035 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum10.i [2023-12-15 17:05:38,049 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 17:05:38,050 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 17:05:38,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 17:05:38,092 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@669bbb0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 17:05:38,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 17:05:38,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 17:05:38,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-15 17:05:38,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:05:38,102 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:05:38,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:05:38,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:05:38,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1502132506, now seen corresponding path program 1 times [2023-12-15 17:05:38,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:05:38,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690536923] [2023-12-15 17:05:38,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:38,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:05:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:38,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:05:38,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690536923] [2023-12-15 17:05:38,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 17:05:38,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316164609] [2023-12-15 17:05:38,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:38,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:05:38,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:05:38,295 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:05:38,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 17:05:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:38,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 17:05:38,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:05:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 17:05:38,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:05:38,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316164609] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:05:38,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:05:38,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:05:38,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246468938] [2023-12-15 17:05:38,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:05:38,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 17:05:38,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:05:38,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 17:05:38,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 17:05:38,477 INFO L87 Difference]: Start difference. First operand has 23 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 17:05:38,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:05:38,506 INFO L93 Difference]: Finished difference Result 44 states and 65 transitions. [2023-12-15 17:05:38,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 17:05:38,509 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2023-12-15 17:05:38,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:05:38,514 INFO L225 Difference]: With dead ends: 44 [2023-12-15 17:05:38,514 INFO L226 Difference]: Without dead ends: 21 [2023-12-15 17:05:38,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 17:05:38,522 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:05:38,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:05:38,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-15 17:05:38,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-15 17:05:38,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 17:05:38,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-12-15 17:05:38,555 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 28 [2023-12-15 17:05:38,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:05:38,556 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-12-15 17:05:38,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 17:05:38,557 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-12-15 17:05:38,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-15 17:05:38,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:05:38,560 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:05:38,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 17:05:38,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 17:05:38,762 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:05:38,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:05:38,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1260265879, now seen corresponding path program 1 times [2023-12-15 17:05:38,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:05:38,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253192172] [2023-12-15 17:05:38,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:38,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:05:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:38,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:05:38,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253192172] [2023-12-15 17:05:38,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 17:05:38,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717652894] [2023-12-15 17:05:38,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:38,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:05:38,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:05:38,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:05:38,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 17:05:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:38,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 17:05:38,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:05:38,893 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-15 17:05:38,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:05:38,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717652894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:05:38,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:05:38,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:05:38,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808421929] [2023-12-15 17:05:38,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:05:38,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:05:38,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:05:38,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:05:38,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:05:38,896 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-15 17:05:38,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:05:38,909 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2023-12-15 17:05:38,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:05:38,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-12-15 17:05:38,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:05:38,910 INFO L225 Difference]: With dead ends: 41 [2023-12-15 17:05:38,910 INFO L226 Difference]: Without dead ends: 22 [2023-12-15 17:05:38,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:05:38,912 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:05:38,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:05:38,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-15 17:05:38,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-15 17:05:38,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 17:05:38,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2023-12-15 17:05:38,917 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 28 [2023-12-15 17:05:38,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:05:38,917 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2023-12-15 17:05:38,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-15 17:05:38,918 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2023-12-15 17:05:38,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-15 17:05:38,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:05:38,919 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:05:38,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 17:05:39,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 17:05:39,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:05:39,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:05:39,126 INFO L85 PathProgramCache]: Analyzing trace with hash -432814053, now seen corresponding path program 1 times [2023-12-15 17:05:39,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:05:39,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079098574] [2023-12-15 17:05:39,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:39,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:05:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:39,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:05:39,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079098574] [2023-12-15 17:05:39,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 17:05:39,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365793163] [2023-12-15 17:05:39,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:39,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:05:39,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:05:39,173 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) [2023-12-15 17:05:39,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 17:05:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:39,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 17:05:39,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:05:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 17:05:39,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:05:39,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365793163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:05:39,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:05:39,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:05:39,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223851432] [2023-12-15 17:05:39,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:05:39,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:05:39,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:05:39,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:05:39,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:05:39,277 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 17:05:39,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:05:39,303 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2023-12-15 17:05:39,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:05:39,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-12-15 17:05:39,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:05:39,305 INFO L225 Difference]: With dead ends: 42 [2023-12-15 17:05:39,306 INFO L226 Difference]: Without dead ends: 25 [2023-12-15 17:05:39,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:05:39,309 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:05:39,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:05:39,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-15 17:05:39,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2023-12-15 17:05:39,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 17:05:39,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-12-15 17:05:39,321 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 29 [2023-12-15 17:05:39,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:05:39,322 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-12-15 17:05:39,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 17:05:39,325 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-12-15 17:05:39,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-15 17:05:39,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:05:39,327 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:05:39,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 17:05:39,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:05:39,540 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:05:39,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:05:39,540 INFO L85 PathProgramCache]: Analyzing trace with hash 28977858, now seen corresponding path program 1 times [2023-12-15 17:05:39,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:05:39,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810511098] [2023-12-15 17:05:39,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:39,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:05:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:39,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:05:39,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810511098] [2023-12-15 17:05:39,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 17:05:39,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509271075] [2023-12-15 17:05:39,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:39,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:05:39,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:05:39,591 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) [2023-12-15 17:05:39,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 17:05:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:39,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 17:05:39,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:05:39,686 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 17:05:39,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:05:39,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509271075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:05:39,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:05:39,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:05:39,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662745594] [2023-12-15 17:05:39,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:05:39,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:05:39,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:05:39,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:05:39,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:05:39,688 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 17:05:39,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:05:39,700 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2023-12-15 17:05:39,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:05:39,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2023-12-15 17:05:39,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:05:39,703 INFO L225 Difference]: With dead ends: 40 [2023-12-15 17:05:39,703 INFO L226 Difference]: Without dead ends: 25 [2023-12-15 17:05:39,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:05:39,704 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:05:39,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:05:39,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-15 17:05:39,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-15 17:05:39,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 17:05:39,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2023-12-15 17:05:39,709 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 38 [2023-12-15 17:05:39,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:05:39,710 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-12-15 17:05:39,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 17:05:39,710 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2023-12-15 17:05:39,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-15 17:05:39,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:05:39,711 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 17:05:39,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 17:05:39,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:05:39,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:05:39,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:05:39,922 INFO L85 PathProgramCache]: Analyzing trace with hash 2098863663, now seen corresponding path program 1 times [2023-12-15 17:05:39,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:05:39,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191900222] [2023-12-15 17:05:39,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:39,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:05:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:39,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:05:39,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191900222] [2023-12-15 17:05:39,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 17:05:39,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283549827] [2023-12-15 17:05:39,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:39,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:05:39,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:05:39,950 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) [2023-12-15 17:05:39,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 17:05:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:40,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 17:05:40,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:05:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-15 17:05:40,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:05:40,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283549827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:05:40,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:05:40,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:05:40,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028363124] [2023-12-15 17:05:40,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:05:40,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:05:40,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:05:40,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:05:40,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:05:40,061 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 17:05:40,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:05:40,080 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2023-12-15 17:05:40,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:05:40,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2023-12-15 17:05:40,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:05:40,082 INFO L225 Difference]: With dead ends: 51 [2023-12-15 17:05:40,082 INFO L226 Difference]: Without dead ends: 31 [2023-12-15 17:05:40,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:05:40,083 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:05:40,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 42 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:05:40,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-15 17:05:40,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2023-12-15 17:05:40,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 17:05:40,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2023-12-15 17:05:40,089 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 39 [2023-12-15 17:05:40,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:05:40,089 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2023-12-15 17:05:40,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 17:05:40,090 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2023-12-15 17:05:40,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-15 17:05:40,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:05:40,091 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 17:05:40,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 17:05:40,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:05:40,296 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:05:40,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:05:40,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1976122640, now seen corresponding path program 1 times [2023-12-15 17:05:40,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:05:40,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607850204] [2023-12-15 17:05:40,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:40,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:05:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:40,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 17:05:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:40,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 17:05:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:40,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 17:05:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:40,437 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-15 17:05:40,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:05:40,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607850204] [2023-12-15 17:05:40,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607850204] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:05:40,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897565094] [2023-12-15 17:05:40,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:40,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:05:40,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:05:40,439 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) [2023-12-15 17:05:40,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 17:05:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:40,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 17:05:40,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:05:40,555 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-15 17:05:40,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:05:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-15 17:05:40,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897565094] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:05:40,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:05:40,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-12-15 17:05:40,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197936329] [2023-12-15 17:05:40,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:05:40,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:05:40,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:05:40,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:05:40,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:05:40,599 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-15 17:05:40,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:05:40,628 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2023-12-15 17:05:40,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:05:40,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2023-12-15 17:05:40,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:05:40,630 INFO L225 Difference]: With dead ends: 58 [2023-12-15 17:05:40,630 INFO L226 Difference]: Without dead ends: 32 [2023-12-15 17:05:40,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:05:40,630 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:05:40,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:05:40,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-15 17:05:40,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-15 17:05:40,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 17:05:40,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2023-12-15 17:05:40,635 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 39 [2023-12-15 17:05:40,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:05:40,635 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2023-12-15 17:05:40,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-15 17:05:40,636 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2023-12-15 17:05:40,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-15 17:05:40,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:05:40,637 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:05:40,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 17:05:40,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:05:40,837 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:05:40,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:05:40,838 INFO L85 PathProgramCache]: Analyzing trace with hash -71399842, now seen corresponding path program 2 times [2023-12-15 17:05:40,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:05:40,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677030863] [2023-12-15 17:05:40,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:40,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:05:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:40,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 17:05:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:40,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:05:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:40,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 17:05:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-15 17:05:41,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:05:41,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677030863] [2023-12-15 17:05:41,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677030863] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:05:41,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403487128] [2023-12-15 17:05:41,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 17:05:41,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:05:41,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:05:41,002 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) [2023-12-15 17:05:41,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 17:05:41,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 17:05:41,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 17:05:41,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 17:05:41,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:05:41,119 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-15 17:05:41,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:05:41,179 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-15 17:05:41,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403487128] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:05:41,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:05:41,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2023-12-15 17:05:41,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543006117] [2023-12-15 17:05:41,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:05:41,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 17:05:41,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:05:41,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 17:05:41,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-12-15 17:05:41,181 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 17:05:41,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:05:41,228 INFO L93 Difference]: Finished difference Result 68 states and 94 transitions. [2023-12-15 17:05:41,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:05:41,229 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2023-12-15 17:05:41,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:05:41,231 INFO L225 Difference]: With dead ends: 68 [2023-12-15 17:05:41,231 INFO L226 Difference]: Without dead ends: 42 [2023-12-15 17:05:41,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-12-15 17:05:41,235 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:05:41,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 76 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:05:41,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-15 17:05:41,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-12-15 17:05:41,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 17:05:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2023-12-15 17:05:41,247 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 42 [2023-12-15 17:05:41,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:05:41,248 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2023-12-15 17:05:41,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 17:05:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2023-12-15 17:05:41,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-15 17:05:41,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:05:41,249 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:05:41,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 17:05:41,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:05:41,458 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:05:41,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:05:41,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1756456273, now seen corresponding path program 3 times [2023-12-15 17:05:41,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:05:41,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578436898] [2023-12-15 17:05:41,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:41,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:05:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:41,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 17:05:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:41,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 17:05:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:41,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 17:05:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-15 17:05:41,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:05:41,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578436898] [2023-12-15 17:05:41,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578436898] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:05:41,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034686193] [2023-12-15 17:05:41,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-15 17:05:41,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:05:41,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:05:41,556 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) [2023-12-15 17:05:41,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 17:05:41,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-15 17:05:41,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 17:05:41,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 17:05:41,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:05:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-15 17:05:41,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:05:41,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034686193] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:05:41,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:05:41,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2023-12-15 17:05:41,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390249822] [2023-12-15 17:05:41,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:05:41,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:05:41,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:05:41,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:05:41,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:05:41,648 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-15 17:05:41,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:05:41,674 INFO L93 Difference]: Finished difference Result 71 states and 90 transitions. [2023-12-15 17:05:41,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:05:41,674 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), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 57 [2023-12-15 17:05:41,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:05:41,676 INFO L225 Difference]: With dead ends: 71 [2023-12-15 17:05:41,677 INFO L226 Difference]: Without dead ends: 44 [2023-12-15 17:05:41,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:05:41,678 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:05:41,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 38 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:05:41,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-15 17:05:41,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2023-12-15 17:05:41,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 17:05:41,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2023-12-15 17:05:41,692 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 57 [2023-12-15 17:05:41,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:05:41,693 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2023-12-15 17:05:41,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-15 17:05:41,693 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2023-12-15 17:05:41,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 17:05:41,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:05:41,697 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:05:41,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 17:05:41,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 17:05:41,906 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:05:41,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:05:41,906 INFO L85 PathProgramCache]: Analyzing trace with hash 882234655, now seen corresponding path program 1 times [2023-12-15 17:05:41,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:05:41,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736751821] [2023-12-15 17:05:41,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:41,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:05:41,930 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 17:05:41,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761852530] [2023-12-15 17:05:41,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:41,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:05:41,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:05:41,931 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) [2023-12-15 17:05:41,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 17:05:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:05:42,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 17:05:42,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:05:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 61 proven. 7 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-15 17:05:42,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:05:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 5 proven. 81 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-15 17:05:42,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:05:42,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736751821] [2023-12-15 17:05:42,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 17:05:42,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761852530] [2023-12-15 17:05:42,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761852530] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:05:42,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 17:05:42,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-15 17:05:42,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697763338] [2023-12-15 17:05:42,095 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 17:05:42,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 17:05:42,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:05:42,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 17:05:42,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:05:42,096 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:05:42,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:05:42,126 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2023-12-15 17:05:42,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 17:05:42,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2023-12-15 17:05:42,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:05:42,127 INFO L225 Difference]: With dead ends: 76 [2023-12-15 17:05:42,127 INFO L226 Difference]: Without dead ends: 51 [2023-12-15 17:05:42,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:05:42,128 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:05:42,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 57 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:05:42,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-15 17:05:42,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-15 17:05:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 17:05:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2023-12-15 17:05:42,133 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 66 [2023-12-15 17:05:42,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:05:42,133 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2023-12-15 17:05:42,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:05:42,134 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2023-12-15 17:05:42,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-15 17:05:42,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:05:42,135 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 18, 10, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:05:42,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 17:05:42,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:05:42,341 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:05:42,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:05:42,341 INFO L85 PathProgramCache]: Analyzing trace with hash -614848289, now seen corresponding path program 2 times [2023-12-15 17:05:42,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:05:42,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919702726] [2023-12-15 17:05:42,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:42,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:05:42,365 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 17:05:42,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399068888] [2023-12-15 17:05:42,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 17:05:42,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:05:42,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:05:42,366 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) [2023-12-15 17:05:42,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 17:05:42,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 17:05:42,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 17:05:42,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 17:05:42,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:05:42,544 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 326 proven. 70 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-12-15 17:05:42,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:05:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-15 17:05:42,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:05:42,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919702726] [2023-12-15 17:05:42,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 17:05:42,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399068888] [2023-12-15 17:05:42,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399068888] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:05:42,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 17:05:42,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2023-12-15 17:05:42,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141750023] [2023-12-15 17:05:42,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 17:05:42,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 17:05:42,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:05:42,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 17:05:42,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-12-15 17:05:42,629 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:05:42,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:05:42,678 INFO L93 Difference]: Finished difference Result 97 states and 116 transitions. [2023-12-15 17:05:42,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 17:05:42,679 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2023-12-15 17:05:42,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:05:42,681 INFO L225 Difference]: With dead ends: 97 [2023-12-15 17:05:42,681 INFO L226 Difference]: Without dead ends: 60 [2023-12-15 17:05:42,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 186 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-12-15 17:05:42,682 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:05:42,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 74 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:05:42,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-15 17:05:42,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-12-15 17:05:42,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 55 states have internal predecessors, (63), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 17:05:42,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2023-12-15 17:05:42,691 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 102 [2023-12-15 17:05:42,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:05:42,691 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2023-12-15 17:05:42,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:05:42,691 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2023-12-15 17:05:42,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-15 17:05:42,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:05:42,693 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 18, 12, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:05:42,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 17:05:42,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 17:05:42,899 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:05:42,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:05:42,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1333347152, now seen corresponding path program 3 times [2023-12-15 17:05:42,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:05:42,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242147010] [2023-12-15 17:05:42,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:42,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:05:42,922 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 17:05:42,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [224743322] [2023-12-15 17:05:42,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-15 17:05:42,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:05:42,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:05:42,924 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) [2023-12-15 17:05:42,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 17:05:43,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-15 17:05:43,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 17:05:43,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 17:05:43,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:05:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1466 backedges. 650 proven. 1 refuted. 0 times theorem prover too weak. 815 trivial. 0 not checked. [2023-12-15 17:05:43,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:05:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1465 trivial. 0 not checked. [2023-12-15 17:05:43,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:05:43,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242147010] [2023-12-15 17:05:43,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 17:05:43,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224743322] [2023-12-15 17:05:43,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224743322] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:05:43,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 17:05:43,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-15 17:05:43,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563148824] [2023-12-15 17:05:43,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 17:05:43,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:05:43,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:05:43,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:05:43,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:05:43,067 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-15 17:05:43,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:05:43,081 INFO L93 Difference]: Finished difference Result 104 states and 121 transitions. [2023-12-15 17:05:43,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:05:43,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 129 [2023-12-15 17:05:43,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:05:43,083 INFO L225 Difference]: With dead ends: 104 [2023-12-15 17:05:43,083 INFO L226 Difference]: Without dead ends: 63 [2023-12-15 17:05:43,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:05:43,083 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:05:43,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:05:43,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-15 17:05:43,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-12-15 17:05:43,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.1379310344827587) internal successors, (66), 58 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 17:05:43,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2023-12-15 17:05:43,090 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 129 [2023-12-15 17:05:43,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:05:43,090 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2023-12-15 17:05:43,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-15 17:05:43,090 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2023-12-15 17:05:43,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 17:05:43,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:05:43,091 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 18, 12, 10, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:05:43,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 17:05:43,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 17:05:43,297 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:05:43,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:05:43,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1445372617, now seen corresponding path program 4 times [2023-12-15 17:05:43,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:05:43,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274401647] [2023-12-15 17:05:43,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:43,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:05:43,335 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 17:05:43,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071267898] [2023-12-15 17:05:43,336 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-15 17:05:43,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:05:43,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:05:43,337 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:05:43,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 17:05:43,506 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-15 17:05:43,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 17:05:43,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 17:05:43,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:05:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1475 backedges. 650 proven. 10 refuted. 0 times theorem prover too weak. 815 trivial. 0 not checked. [2023-12-15 17:05:43,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:05:43,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1475 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1465 trivial. 0 not checked. [2023-12-15 17:05:43,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:05:43,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274401647] [2023-12-15 17:05:43,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 17:05:43,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071267898] [2023-12-15 17:05:43,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071267898] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:05:43,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 17:05:43,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-12-15 17:05:43,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177066573] [2023-12-15 17:05:43,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 17:05:43,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 17:05:43,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:05:43,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 17:05:43,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:05:43,593 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-15 17:05:43,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:05:43,609 INFO L93 Difference]: Finished difference Result 109 states and 128 transitions. [2023-12-15 17:05:43,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 17:05:43,610 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 132 [2023-12-15 17:05:43,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:05:43,611 INFO L225 Difference]: With dead ends: 109 [2023-12-15 17:05:43,611 INFO L226 Difference]: Without dead ends: 68 [2023-12-15 17:05:43,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:05:43,612 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:05:43,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:05:43,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-15 17:05:43,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-12-15 17:05:43,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.126984126984127) internal successors, (71), 63 states have internal predecessors, (71), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 17:05:43,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2023-12-15 17:05:43,619 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 132 [2023-12-15 17:05:43,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:05:43,621 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2023-12-15 17:05:43,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-15 17:05:43,621 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2023-12-15 17:05:43,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-15 17:05:43,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:05:43,622 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 18, 12, 10, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:05:43,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 17:05:43,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 17:05:43,828 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:05:43,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:05:43,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1194088144, now seen corresponding path program 5 times [2023-12-15 17:05:43,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:05:43,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273441203] [2023-12-15 17:05:43,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:05:43,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:05:43,855 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 17:05:43,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266496605] [2023-12-15 17:05:43,856 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-15 17:05:43,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:05:43,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:05:43,857 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:05:43,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 17:05:46,708 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2023-12-15 17:05:46,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-12-15 17:05:46,709 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-15 17:05:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-15 17:05:47,050 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-15 17:05:47,050 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-15 17:05:47,051 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 17:05:47,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 17:05:47,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 17:05:47,255 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 1, 1, 1, 1, 1] [2023-12-15 17:05:47,258 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 17:05:47,302 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-12-15 17:05:47,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:05:47 BoogieIcfgContainer [2023-12-15 17:05:47,333 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 17:05:47,333 INFO L158 Benchmark]: Toolchain (without parser) took 9979.63ms. Allocated memory is still 284.2MB. Free memory was 230.1MB in the beginning and 171.4MB in the end (delta: 58.7MB). Peak memory consumption was 59.2MB. Max. memory is 8.0GB. [2023-12-15 17:05:47,333 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 206.6MB. Free memory is still 155.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 17:05:47,334 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.33ms. Allocated memory is still 284.2MB. Free memory was 230.1MB in the beginning and 218.8MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 17:05:47,334 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.75ms. Allocated memory is still 284.2MB. Free memory was 218.8MB in the beginning and 217.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-15 17:05:47,335 INFO L158 Benchmark]: Boogie Preprocessor took 52.39ms. Allocated memory is still 284.2MB. Free memory was 217.2MB in the beginning and 215.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 17:05:47,335 INFO L158 Benchmark]: RCFGBuilder took 304.76ms. Allocated memory is still 284.2MB. Free memory was 214.9MB in the beginning and 201.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-15 17:05:47,335 INFO L158 Benchmark]: TraceAbstraction took 9303.33ms. Allocated memory is still 284.2MB. Free memory was 200.5MB in the beginning and 171.4MB in the end (delta: 29.1MB). Peak memory consumption was 29.9MB. Max. memory is 8.0GB. [2023-12-15 17:05:47,336 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 206.6MB. Free memory is still 155.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 265.33ms. Allocated memory is still 284.2MB. Free memory was 230.1MB in the beginning and 218.8MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.75ms. Allocated memory is still 284.2MB. Free memory was 218.8MB in the beginning and 217.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 52.39ms. Allocated memory is still 284.2MB. Free memory was 217.2MB in the beginning and 215.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 304.76ms. Allocated memory is still 284.2MB. Free memory was 214.9MB in the beginning and 201.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 9303.33ms. Allocated memory is still 284.2MB. Free memory was 200.5MB in the beginning and 171.4MB in the end (delta: 29.1MB). Peak memory consumption was 29.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 61]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int x[10]; [L43] CALL init_nondet(x) [L16] int i; [L17] i = 0 VAL [i=0, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=1, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=2, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=3, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=4, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=5, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=6, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=7, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=8, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=9, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=10, x={3:0}, x={3:0}] [L17] COND FALSE !(i < 10) VAL [i=10, x={3:0}, x={3:0}] [L43] RET init_nondet(x) [L44] int temp; [L45] int ret; [L46] int ret2; [L47] int ret5; VAL [x={3:0}] [L49] CALL, EXPR rangesum(x) VAL [x={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=1, i=6, ret=-2147483645, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=1, i=7, ret=-2147483645, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=1, i=7, ret=-2147483645, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=2, i=7, ret=-4294967289, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=2, i=8, ret=-4294967289, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=2, i=8, ret=-4294967289, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=3, i=8, ret=-2147483650, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=3, i=9, ret=-2147483650, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=3, i=9, ret=-2147483650, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=4, i=9, ret=-3, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=4, i=10, ret=-3, x={3:0}, x={3:0}] [L28] COND FALSE !(i < 10) VAL [cnt=4, i=10, ret=-3, x={3:0}, x={3:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\result=0, cnt=4, i=10, ret=-3, x={3:0}, x={3:0}] [L49] RET, EXPR rangesum(x) VAL [x={3:0}] [L49] ret = rangesum(x) [L51] EXPR x[0] [L51] temp=x[0] [L51] EXPR x[1] [L51] x[0] = x[1] [L51] x[1] = temp [L52] CALL, EXPR rangesum(x) VAL [x={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=1, i=6, ret=-2147483645, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=1, i=7, ret=-2147483645, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=1, i=7, ret=-2147483645, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=2, i=7, ret=-4294967289, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=2, i=8, ret=-4294967289, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=2, i=8, ret=-4294967289, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=3, i=8, ret=-2147483650, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=3, i=9, ret=-2147483650, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=3, i=9, ret=-2147483650, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=4, i=9, ret=-3, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=4, i=10, ret=-3, x={3:0}, x={3:0}] [L28] COND FALSE !(i < 10) VAL [cnt=4, i=10, ret=-3, x={3:0}, x={3:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\result=0, cnt=4, i=10, ret=-3, x={3:0}, x={3:0}] [L52] RET, EXPR rangesum(x) VAL [ret=0, temp=-2147483648, x={3:0}] [L52] ret2 = rangesum(x) [L53] EXPR x[0] [L53] temp=x[0] [L54] int i =0 ; VAL [i=0, ret2=0, ret=0, temp=-2147483647, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=1, ret2=0, ret=0, temp=-2147483647, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=2, ret2=0, ret=0, temp=-2147483647, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=3, ret2=0, ret=0, temp=-2147483647, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=4, ret2=0, ret=0, temp=-2147483647, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=5, ret2=0, ret=0, temp=-2147483647, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=6, ret2=0, ret=0, temp=-2147483647, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=7, ret2=0, ret=0, temp=-2147483647, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=8, ret2=0, ret=0, temp=-2147483647, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=9, ret2=0, ret=0, temp=-2147483647, x={3:0}] [L54] COND FALSE !(i<10 -1) VAL [i=9, ret2=0, ret=0, temp=-2147483647, x={3:0}] [L57] x[10 -1] = temp [L58] CALL, EXPR rangesum(x) VAL [x={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=1, i=6, ret=-2147483644, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=1, i=7, ret=-2147483644, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=1, i=7, ret=-2147483644, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=2, i=7, ret=-5, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=2, i=8, ret=-5, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=2, i=8, ret=-5, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=3, i=8, ret=2147483642, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=3, i=9, ret=2147483642, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=3, i=9, ret=2147483642, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=4, i=9, ret=-5, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=4, i=10, ret=-5, x={3:0}, x={3:0}] [L28] COND FALSE !(i < 10) VAL [cnt=4, i=10, ret=-5, x={3:0}, x={3:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\result=-1, cnt=4, i=10, ret=-5, x={3:0}, x={3:0}] [L58] RET, EXPR rangesum(x) VAL [ret2=0, ret=0, temp=-2147483647, x={3:0}] [L58] ret5 = rangesum(x) [L60] COND TRUE ret != ret2 || ret !=ret5 VAL [ret2=0, ret5=-1, ret=0, temp=-2147483647, x={3:0}] [L61] reach_error() VAL [ret2=0, ret5=-1, ret=0, temp=-2147483647, x={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.2s, OverallIterations: 13, TraceHistogramMax: 30, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 599 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 329 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 220 IncrementalHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 270 mSDtfsCounter, 220 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1251 GetRequests, 1192 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=12, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 9 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 1166 NumberOfCodeBlocks, 1041 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 1356 ConstructedInterpolants, 0 QuantifiedInterpolants, 1568 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2480 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 7804/8442 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-12-15 17:05:47,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...