/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 01:55:38,554 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 01:55:38,617 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 01:55:38,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 01:55:38,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 01:55:38,641 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 01:55:38,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 01:55:38,641 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 01:55:38,642 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 01:55:38,642 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 01:55:38,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 01:55:38,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 01:55:38,643 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 01:55:38,643 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 01:55:38,643 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 01:55:38,643 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 01:55:38,644 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 01:55:38,644 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 01:55:38,644 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 01:55:38,644 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 01:55:38,644 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 01:55:38,647 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 01:55:38,647 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 01:55:38,647 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 01:55:38,647 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 01:55:38,647 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 01:55:38,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 01:55:38,647 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 01:55:38,647 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 01:55:38,648 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 01:55:38,648 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 01:55:38,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 01:55:38,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:55:38,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 01:55:38,648 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 01:55:38,648 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 01:55:38,649 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 01:55:38,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 01:55:38,649 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 01:55:38,649 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 01:55:38,649 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 01:55:38,650 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 01:55:38,650 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 01:55:38,650 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 01:55:38,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 01:55:38,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 01:55:38,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 01:55:38,845 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 01:55:38,845 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 01:55:38,846 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label48.c [2023-12-16 01:55:39,793 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 01:55:40,115 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 01:55:40,117 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label48.c [2023-12-16 01:55:40,141 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16330c321/2dd4101c30fb48ddae36f446d80222d3/FLAGdc51fb5aa [2023-12-16 01:55:40,155 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16330c321/2dd4101c30fb48ddae36f446d80222d3 [2023-12-16 01:55:40,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 01:55:40,158 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 01:55:40,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 01:55:40,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 01:55:40,164 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 01:55:40,164 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:55:40" (1/1) ... [2023-12-16 01:55:40,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d665cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:40, skipping insertion in model container [2023-12-16 01:55:40,165 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:55:40" (1/1) ... [2023-12-16 01:55:40,271 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 01:55:40,452 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label48.c[1668,1681] [2023-12-16 01:55:40,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:55:40,963 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 01:55:40,997 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label48.c[1668,1681] [2023-12-16 01:55:41,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:55:41,268 INFO L206 MainTranslator]: Completed translation [2023-12-16 01:55:41,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:41 WrapperNode [2023-12-16 01:55:41,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 01:55:41,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 01:55:41,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 01:55:41,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 01:55:41,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:41" (1/1) ... [2023-12-16 01:55:41,309 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:41" (1/1) ... [2023-12-16 01:55:41,537 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2023-12-16 01:55:41,538 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 01:55:41,538 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 01:55:41,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 01:55:41,538 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 01:55:41,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:41" (1/1) ... [2023-12-16 01:55:41,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:41" (1/1) ... [2023-12-16 01:55:41,577 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:41" (1/1) ... [2023-12-16 01:55:41,724 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 01:55:41,724 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:41" (1/1) ... [2023-12-16 01:55:41,724 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:41" (1/1) ... [2023-12-16 01:55:41,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:41" (1/1) ... [2023-12-16 01:55:41,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:41" (1/1) ... [2023-12-16 01:55:41,874 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:41" (1/1) ... [2023-12-16 01:55:41,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:41" (1/1) ... [2023-12-16 01:55:41,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 01:55:41,923 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 01:55:41,923 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 01:55:41,923 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 01:55:41,924 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:41" (1/1) ... [2023-12-16 01:55:41,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:55:41,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:55:41,953 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) [2023-12-16 01:55:41,958 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 [2023-12-16 01:55:41,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 01:55:41,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 01:55:41,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 01:55:41,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 01:55:42,027 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 01:55:42,029 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 01:55:44,778 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 01:55:44,828 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 01:55:44,829 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 01:55:44,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:55:44 BoogieIcfgContainer [2023-12-16 01:55:44,829 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 01:55:44,831 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 01:55:44,831 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 01:55:44,833 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 01:55:44,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:55:40" (1/3) ... [2023-12-16 01:55:44,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f86696e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:55:44, skipping insertion in model container [2023-12-16 01:55:44,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:41" (2/3) ... [2023-12-16 01:55:44,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f86696e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:55:44, skipping insertion in model container [2023-12-16 01:55:44,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:55:44" (3/3) ... [2023-12-16 01:55:44,835 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label48.c [2023-12-16 01:55:44,847 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 01:55:44,847 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 01:55:44,899 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 01:55:44,904 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;@7575cb00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 01:55:44,905 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 01:55:44,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:55:44,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 01:55:44,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:55:44,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:55:44,917 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:55:44,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:55:44,923 INFO L85 PathProgramCache]: Analyzing trace with hash 902928907, now seen corresponding path program 1 times [2023-12-16 01:55:44,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:55:44,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008723887] [2023-12-16 01:55:44,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:55:44,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:55:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:55:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:55:45,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:55:45,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008723887] [2023-12-16 01:55:45,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008723887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:55:45,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:55:45,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:55:45,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346673234] [2023-12-16 01:55:45,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:55:45,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 01:55:45,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:55:45,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 01:55:45,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 01:55:45,067 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:55:45,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:55:45,133 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2023-12-16 01:55:45,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 01:55:45,135 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-16 01:55:45,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:55:45,150 INFO L225 Difference]: With dead ends: 1511 [2023-12-16 01:55:45,150 INFO L226 Difference]: Without dead ends: 754 [2023-12-16 01:55:45,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 01:55:45,156 INFO L413 NwaCegarLoop]: 1438 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:55:45,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:55:45,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-12-16 01:55:45,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-12-16 01:55:45,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:55:45,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2023-12-16 01:55:45,227 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 9 [2023-12-16 01:55:45,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:55:45,227 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2023-12-16 01:55:45,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:55:45,228 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2023-12-16 01:55:45,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 01:55:45,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:55:45,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:55:45,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 01:55:45,228 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:55:45,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:55:45,229 INFO L85 PathProgramCache]: Analyzing trace with hash 995675993, now seen corresponding path program 1 times [2023-12-16 01:55:45,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:55:45,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010271536] [2023-12-16 01:55:45,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:55:45,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:55:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:55:45,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:55:45,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:55:45,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010271536] [2023-12-16 01:55:45,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010271536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:55:45,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:55:45,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:55:45,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040965269] [2023-12-16 01:55:45,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:55:45,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:55:45,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:55:45,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:55:45,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:55:45,302 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:55:48,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:55:48,158 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2023-12-16 01:55:48,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:55:48,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-16 01:55:48,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:55:48,164 INFO L225 Difference]: With dead ends: 2258 [2023-12-16 01:55:48,164 INFO L226 Difference]: Without dead ends: 1505 [2023-12-16 01:55:48,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:55:48,165 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 808 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:55:48,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 426 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-16 01:55:48,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2023-12-16 01:55:48,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2023-12-16 01:55:48,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.6389627659574468) internal successors, (2465), 1504 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:55:48,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2465 transitions. [2023-12-16 01:55:48,191 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2465 transitions. Word has length 9 [2023-12-16 01:55:48,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:55:48,191 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 2465 transitions. [2023-12-16 01:55:48,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:55:48,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2465 transitions. [2023-12-16 01:55:48,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 01:55:48,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:55:48,194 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:55:48,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 01:55:48,195 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:55:48,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:55:48,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1239332906, now seen corresponding path program 1 times [2023-12-16 01:55:48,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:55:48,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314021311] [2023-12-16 01:55:48,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:55:48,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:55:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:55:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:55:48,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:55:48,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314021311] [2023-12-16 01:55:48,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314021311] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:55:48,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17029298] [2023-12-16 01:55:48,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:55:48,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:55:48,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:55:48,465 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) [2023-12-16 01:55:48,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 01:55:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:55:48,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:55:48,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:55:48,552 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:55:48,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:55:48,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17029298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:55:48,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:55:48,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-16 01:55:48,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229373086] [2023-12-16 01:55:48,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:55:48,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:55:48,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:55:48,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:55:48,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:55:48,554 INFO L87 Difference]: Start difference. First operand 1505 states and 2465 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:55:51,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:55:51,190 INFO L93 Difference]: Finished difference Result 4511 states and 7392 transitions. [2023-12-16 01:55:51,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:55:51,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-16 01:55:51,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:55:51,215 INFO L225 Difference]: With dead ends: 4511 [2023-12-16 01:55:51,220 INFO L226 Difference]: Without dead ends: 3007 [2023-12-16 01:55:51,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:55:51,225 INFO L413 NwaCegarLoop]: 1381 mSDtfsCounter, 769 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:55:51,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1388 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [885 Valid, 1983 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 01:55:51,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2023-12-16 01:55:51,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 3007. [2023-12-16 01:55:51,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3006 states have (on average 1.363606121091151) internal successors, (4099), 3006 states have internal predecessors, (4099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:55:51,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4099 transitions. [2023-12-16 01:55:51,267 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4099 transitions. Word has length 80 [2023-12-16 01:55:51,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:55:51,268 INFO L495 AbstractCegarLoop]: Abstraction has 3007 states and 4099 transitions. [2023-12-16 01:55:51,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:55:51,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4099 transitions. [2023-12-16 01:55:51,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-16 01:55:51,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:55:51,271 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:55:51,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 01:55:51,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:55:51,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:55:51,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:55:51,479 INFO L85 PathProgramCache]: Analyzing trace with hash -813283492, now seen corresponding path program 1 times [2023-12-16 01:55:51,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:55:51,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318180884] [2023-12-16 01:55:51,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:55:51,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:55:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:55:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:55:51,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:55:51,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318180884] [2023-12-16 01:55:51,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318180884] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:55:51,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:55:51,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:55:51,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811029473] [2023-12-16 01:55:51,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:55:51,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:55:51,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:55:51,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:55:51,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:55:51,614 INFO L87 Difference]: Start difference. First operand 3007 states and 4099 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:55:54,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:55:54,121 INFO L93 Difference]: Finished difference Result 7515 states and 10660 transitions. [2023-12-16 01:55:54,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:55:54,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-12-16 01:55:54,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:55:54,134 INFO L225 Difference]: With dead ends: 7515 [2023-12-16 01:55:54,134 INFO L226 Difference]: Without dead ends: 4509 [2023-12-16 01:55:54,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:55:54,144 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 748 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2017 mSolverCounterSat, 910 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 910 IncrementalHoareTripleChecker+Valid, 2017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:55:54,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 518 Invalid, 2927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [910 Valid, 2017 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-16 01:55:54,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2023-12-16 01:55:54,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 4509. [2023-12-16 01:55:54,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4509 states, 4508 states have (on average 1.3251996450754215) internal successors, (5974), 4508 states have internal predecessors, (5974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:55:54,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4509 states to 4509 states and 5974 transitions. [2023-12-16 01:55:54,200 INFO L78 Accepts]: Start accepts. Automaton has 4509 states and 5974 transitions. Word has length 83 [2023-12-16 01:55:54,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:55:54,201 INFO L495 AbstractCegarLoop]: Abstraction has 4509 states and 5974 transitions. [2023-12-16 01:55:54,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:55:54,201 INFO L276 IsEmpty]: Start isEmpty. Operand 4509 states and 5974 transitions. [2023-12-16 01:55:54,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-16 01:55:54,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:55:54,206 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:55:54,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 01:55:54,206 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:55:54,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:55:54,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1802311801, now seen corresponding path program 1 times [2023-12-16 01:55:54,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:55:54,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588345519] [2023-12-16 01:55:54,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:55:54,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:55:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:55:54,384 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:55:54,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:55:54,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588345519] [2023-12-16 01:55:54,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588345519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:55:54,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:55:54,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:55:54,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641370233] [2023-12-16 01:55:54,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:55:54,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:55:54,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:55:54,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:55:54,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:55:54,386 INFO L87 Difference]: Start difference. First operand 4509 states and 5974 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:55:58,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:55:58,172 INFO L93 Difference]: Finished difference Result 14274 states and 18790 transitions. [2023-12-16 01:55:58,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:55:58,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-16 01:55:58,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:55:58,194 INFO L225 Difference]: With dead ends: 14274 [2023-12-16 01:55:58,194 INFO L226 Difference]: Without dead ends: 9766 [2023-12-16 01:55:58,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:55:58,199 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 2161 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4750 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 5528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 4750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:55:58,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2161 Valid, 183 Invalid, 5528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 4750 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-16 01:55:58,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9766 states. [2023-12-16 01:55:58,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9766 to 9015. [2023-12-16 01:55:58,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9015 states, 9014 states have (on average 1.3039715997337475) internal successors, (11754), 9014 states have internal predecessors, (11754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:55:58,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9015 states to 9015 states and 11754 transitions. [2023-12-16 01:55:58,313 INFO L78 Accepts]: Start accepts. Automaton has 9015 states and 11754 transitions. Word has length 94 [2023-12-16 01:55:58,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:55:58,313 INFO L495 AbstractCegarLoop]: Abstraction has 9015 states and 11754 transitions. [2023-12-16 01:55:58,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:55:58,314 INFO L276 IsEmpty]: Start isEmpty. Operand 9015 states and 11754 transitions. [2023-12-16 01:55:58,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 01:55:58,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:55:58,315 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:55:58,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 01:55:58,315 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:55:58,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:55:58,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1274828124, now seen corresponding path program 1 times [2023-12-16 01:55:58,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:55:58,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270799242] [2023-12-16 01:55:58,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:55:58,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:55:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:55:58,486 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:55:58,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:55:58,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270799242] [2023-12-16 01:55:58,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270799242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:55:58,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:55:58,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:55:58,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695601963] [2023-12-16 01:55:58,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:55:58,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:55:58,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:55:58,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:55:58,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:55:58,491 INFO L87 Difference]: Start difference. First operand 9015 states and 11754 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:01,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:56:01,821 INFO L93 Difference]: Finished difference Result 22574 states and 30208 transitions. [2023-12-16 01:56:01,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:56:01,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2023-12-16 01:56:01,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:56:01,847 INFO L225 Difference]: With dead ends: 22574 [2023-12-16 01:56:01,847 INFO L226 Difference]: Without dead ends: 12772 [2023-12-16 01:56:01,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:56:01,866 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 690 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3807 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 4470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 3807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:56:01,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 711 Invalid, 4470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 3807 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-16 01:56:01,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12772 states. [2023-12-16 01:56:01,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12772 to 12770. [2023-12-16 01:56:01,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12770 states, 12769 states have (on average 1.2174015193045657) internal successors, (15545), 12769 states have internal predecessors, (15545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:02,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12770 states to 12770 states and 15545 transitions. [2023-12-16 01:56:02,013 INFO L78 Accepts]: Start accepts. Automaton has 12770 states and 15545 transitions. Word has length 148 [2023-12-16 01:56:02,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:56:02,013 INFO L495 AbstractCegarLoop]: Abstraction has 12770 states and 15545 transitions. [2023-12-16 01:56:02,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:02,014 INFO L276 IsEmpty]: Start isEmpty. Operand 12770 states and 15545 transitions. [2023-12-16 01:56:02,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-12-16 01:56:02,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:56:02,015 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:56:02,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 01:56:02,016 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:56:02,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:56:02,016 INFO L85 PathProgramCache]: Analyzing trace with hash -447595537, now seen corresponding path program 1 times [2023-12-16 01:56:02,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:56:02,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105670088] [2023-12-16 01:56:02,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:02,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:56:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 41 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:56:02,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:56:02,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105670088] [2023-12-16 01:56:02,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105670088] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:56:02,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595810617] [2023-12-16 01:56:02,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:02,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:56:02,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:56:02,333 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) [2023-12-16 01:56:02,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 01:56:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:02,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:56:02,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:56:02,539 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 01:56:02,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:56:02,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595810617] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:56:02,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:56:02,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-12-16 01:56:02,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239623518] [2023-12-16 01:56:02,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:56:02,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:56:02,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:56:02,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:56:02,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:56:02,546 INFO L87 Difference]: Start difference. First operand 12770 states and 15545 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:05,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:56:05,125 INFO L93 Difference]: Finished difference Result 32298 states and 40260 transitions. [2023-12-16 01:56:05,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:56:05,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2023-12-16 01:56:05,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:56:05,158 INFO L225 Difference]: With dead ends: 32298 [2023-12-16 01:56:05,158 INFO L226 Difference]: Without dead ends: 20280 [2023-12-16 01:56:05,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:56:05,172 INFO L413 NwaCegarLoop]: 962 mSDtfsCounter, 802 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 745 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 3046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 745 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:56:05,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 969 Invalid, 3046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [745 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-16 01:56:05,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20280 states. [2023-12-16 01:56:05,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20280 to 18778. [2023-12-16 01:56:05,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18778 states, 18777 states have (on average 1.2516908984395803) internal successors, (23503), 18777 states have internal predecessors, (23503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:05,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18778 states to 18778 states and 23503 transitions. [2023-12-16 01:56:05,374 INFO L78 Accepts]: Start accepts. Automaton has 18778 states and 23503 transitions. Word has length 239 [2023-12-16 01:56:05,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:56:05,374 INFO L495 AbstractCegarLoop]: Abstraction has 18778 states and 23503 transitions. [2023-12-16 01:56:05,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:05,375 INFO L276 IsEmpty]: Start isEmpty. Operand 18778 states and 23503 transitions. [2023-12-16 01:56:05,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-16 01:56:05,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:56:05,377 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:56:05,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 01:56:05,585 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,SelfDestructingSolverStorable6 [2023-12-16 01:56:05,585 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:56:05,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:56:05,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1383221762, now seen corresponding path program 1 times [2023-12-16 01:56:05,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:56:05,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43394831] [2023-12-16 01:56:05,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:05,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:56:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:05,799 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-16 01:56:05,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:56:05,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43394831] [2023-12-16 01:56:05,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43394831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:56:05,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:56:05,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:56:05,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465850726] [2023-12-16 01:56:05,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:56:05,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:56:05,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:56:05,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:56:05,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:56:05,801 INFO L87 Difference]: Start difference. First operand 18778 states and 23503 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:08,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:56:08,276 INFO L93 Difference]: Finished difference Result 44314 states and 57007 transitions. [2023-12-16 01:56:08,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:56:08,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2023-12-16 01:56:08,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:56:08,314 INFO L225 Difference]: With dead ends: 44314 [2023-12-16 01:56:08,314 INFO L226 Difference]: Without dead ends: 26288 [2023-12-16 01:56:08,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:56:08,333 INFO L413 NwaCegarLoop]: 1211 mSDtfsCounter, 765 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 01:56:08,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 1218 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 2260 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 01:56:08,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26288 states. [2023-12-16 01:56:08,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26288 to 26288. [2023-12-16 01:56:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26288 states, 26287 states have (on average 1.2187012591775401) internal successors, (32036), 26287 states have internal predecessors, (32036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:08,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26288 states to 26288 states and 32036 transitions. [2023-12-16 01:56:08,659 INFO L78 Accepts]: Start accepts. Automaton has 26288 states and 32036 transitions. Word has length 249 [2023-12-16 01:56:08,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:56:08,659 INFO L495 AbstractCegarLoop]: Abstraction has 26288 states and 32036 transitions. [2023-12-16 01:56:08,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:08,659 INFO L276 IsEmpty]: Start isEmpty. Operand 26288 states and 32036 transitions. [2023-12-16 01:56:08,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-16 01:56:08,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:56:08,662 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:56:08,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 01:56:08,662 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:56:08,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:56:08,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1564398950, now seen corresponding path program 1 times [2023-12-16 01:56:08,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:56:08,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203789749] [2023-12-16 01:56:08,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:08,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:56:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:08,826 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-16 01:56:08,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:56:08,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203789749] [2023-12-16 01:56:08,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203789749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:56:08,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:56:08,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:56:08,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927004735] [2023-12-16 01:56:08,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:56:08,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:56:08,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:56:08,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:56:08,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:56:08,828 INFO L87 Difference]: Start difference. First operand 26288 states and 32036 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:11,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:56:11,433 INFO L93 Difference]: Finished difference Result 71352 states and 88216 transitions. [2023-12-16 01:56:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:56:11,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 264 [2023-12-16 01:56:11,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:56:11,495 INFO L225 Difference]: With dead ends: 71352 [2023-12-16 01:56:11,495 INFO L226 Difference]: Without dead ends: 42812 [2023-12-16 01:56:11,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:56:11,518 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 2782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 01:56:11,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 319 Invalid, 2782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 01:56:11,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42812 states. [2023-12-16 01:56:11,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42812 to 39806. [2023-12-16 01:56:11,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39806 states, 39805 states have (on average 1.1773144077377213) internal successors, (46863), 39805 states have internal predecessors, (46863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:11,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39806 states to 39806 states and 46863 transitions. [2023-12-16 01:56:11,930 INFO L78 Accepts]: Start accepts. Automaton has 39806 states and 46863 transitions. Word has length 264 [2023-12-16 01:56:11,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:56:11,931 INFO L495 AbstractCegarLoop]: Abstraction has 39806 states and 46863 transitions. [2023-12-16 01:56:11,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:11,931 INFO L276 IsEmpty]: Start isEmpty. Operand 39806 states and 46863 transitions. [2023-12-16 01:56:11,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-16 01:56:11,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:56:11,934 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:56:11,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 01:56:11,934 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:56:11,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:56:11,935 INFO L85 PathProgramCache]: Analyzing trace with hash 324764373, now seen corresponding path program 1 times [2023-12-16 01:56:11,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:56:11,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249019650] [2023-12-16 01:56:11,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:11,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:56:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:56:12,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:56:12,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249019650] [2023-12-16 01:56:12,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249019650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:56:12,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:56:12,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:56:12,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104142602] [2023-12-16 01:56:12,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:56:12,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:56:12,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:56:12,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:56:12,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:56:12,248 INFO L87 Difference]: Start difference. First operand 39806 states and 46863 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:14,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:56:14,958 INFO L93 Difference]: Finished difference Result 100639 states and 118186 transitions. [2023-12-16 01:56:14,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:56:14,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2023-12-16 01:56:14,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:56:15,040 INFO L225 Difference]: With dead ends: 100639 [2023-12-16 01:56:15,040 INFO L226 Difference]: Without dead ends: 61585 [2023-12-16 01:56:15,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:56:15,072 INFO L413 NwaCegarLoop]: 1162 mSDtfsCounter, 637 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 01:56:15,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 1169 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 2525 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 01:56:15,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61585 states. [2023-12-16 01:56:15,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61585 to 61585. [2023-12-16 01:56:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61585 states, 61584 states have (on average 1.1574110158482722) internal successors, (71278), 61584 states have internal predecessors, (71278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:15,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61585 states to 61585 states and 71278 transitions. [2023-12-16 01:56:15,908 INFO L78 Accepts]: Start accepts. Automaton has 61585 states and 71278 transitions. Word has length 267 [2023-12-16 01:56:15,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:56:15,909 INFO L495 AbstractCegarLoop]: Abstraction has 61585 states and 71278 transitions. [2023-12-16 01:56:15,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:15,909 INFO L276 IsEmpty]: Start isEmpty. Operand 61585 states and 71278 transitions. [2023-12-16 01:56:15,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-16 01:56:15,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:56:15,992 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:56:15,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 01:56:15,993 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:56:15,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:56:15,993 INFO L85 PathProgramCache]: Analyzing trace with hash -680322853, now seen corresponding path program 1 times [2023-12-16 01:56:15,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:56:15,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544040718] [2023-12-16 01:56:15,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:15,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:56:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 01:56:16,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:56:16,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544040718] [2023-12-16 01:56:16,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544040718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:56:16,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:56:16,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 01:56:16,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506704829] [2023-12-16 01:56:16,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:56:16,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:56:16,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:56:16,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:56:16,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:56:16,906 INFO L87 Difference]: Start difference. First operand 61585 states and 71278 transitions. Second operand has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:21,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:56:21,240 INFO L93 Difference]: Finished difference Result 160719 states and 188665 transitions. [2023-12-16 01:56:21,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:56:21,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 408 [2023-12-16 01:56:21,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:56:21,373 INFO L225 Difference]: With dead ends: 160719 [2023-12-16 01:56:21,373 INFO L226 Difference]: Without dead ends: 99886 [2023-12-16 01:56:21,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:56:21,415 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 1413 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3616 mSolverCounterSat, 1287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 4903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1287 IncrementalHoareTripleChecker+Valid, 3616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:56:21,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 123 Invalid, 4903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1287 Valid, 3616 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-16 01:56:21,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99886 states. [2023-12-16 01:56:22,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99886 to 84115. [2023-12-16 01:56:22,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84115 states, 84114 states have (on average 1.170364029769123) internal successors, (98444), 84114 states have internal predecessors, (98444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:22,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84115 states to 84115 states and 98444 transitions. [2023-12-16 01:56:22,504 INFO L78 Accepts]: Start accepts. Automaton has 84115 states and 98444 transitions. Word has length 408 [2023-12-16 01:56:22,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:56:22,505 INFO L495 AbstractCegarLoop]: Abstraction has 84115 states and 98444 transitions. [2023-12-16 01:56:22,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:22,505 INFO L276 IsEmpty]: Start isEmpty. Operand 84115 states and 98444 transitions. [2023-12-16 01:56:22,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-16 01:56:22,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:56:22,512 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:56:22,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 01:56:22,512 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:56:22,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:56:22,513 INFO L85 PathProgramCache]: Analyzing trace with hash -904415285, now seen corresponding path program 1 times [2023-12-16 01:56:22,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:56:22,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553900463] [2023-12-16 01:56:22,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:22,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:56:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-16 01:56:22,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:56:22,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553900463] [2023-12-16 01:56:22,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553900463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:56:22,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:56:22,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:56:22,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112504507] [2023-12-16 01:56:22,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:56:22,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:56:22,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:56:22,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:56:22,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:56:22,711 INFO L87 Difference]: Start difference. First operand 84115 states and 98444 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:25,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:56:25,929 INFO L93 Difference]: Finished difference Result 202024 states and 237759 transitions. [2023-12-16 01:56:25,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:56:25,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 423 [2023-12-16 01:56:25,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:56:26,202 INFO L225 Difference]: With dead ends: 202024 [2023-12-16 01:56:26,203 INFO L226 Difference]: Without dead ends: 118661 [2023-12-16 01:56:26,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:56:26,241 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 786 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:56:26,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1241 Invalid, 2755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 01:56:26,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118661 states. [2023-12-16 01:56:27,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118661 to 111902. [2023-12-16 01:56:27,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111902 states, 111901 states have (on average 1.1402042877186085) internal successors, (127590), 111901 states have internal predecessors, (127590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:27,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111902 states to 111902 states and 127590 transitions. [2023-12-16 01:56:27,524 INFO L78 Accepts]: Start accepts. Automaton has 111902 states and 127590 transitions. Word has length 423 [2023-12-16 01:56:27,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:56:27,525 INFO L495 AbstractCegarLoop]: Abstraction has 111902 states and 127590 transitions. [2023-12-16 01:56:27,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:27,525 INFO L276 IsEmpty]: Start isEmpty. Operand 111902 states and 127590 transitions. [2023-12-16 01:56:27,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-12-16 01:56:27,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:56:27,533 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:56:27,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 01:56:27,534 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:56:27,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:56:27,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1431888949, now seen corresponding path program 1 times [2023-12-16 01:56:27,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:56:27,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924865368] [2023-12-16 01:56:27,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:27,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:56:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:28,499 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 373 proven. 54 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 01:56:28,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:56:28,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924865368] [2023-12-16 01:56:28,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924865368] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:56:28,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311083614] [2023-12-16 01:56:28,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:28,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:56:28,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:56:28,501 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) [2023-12-16 01:56:28,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 01:56:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:28,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 01:56:28,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:56:31,549 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 373 proven. 54 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 01:56:31,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 01:56:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 373 proven. 54 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 01:56:33,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311083614] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 01:56:33,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 01:56:33,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-12-16 01:56:33,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849809235] [2023-12-16 01:56:33,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 01:56:33,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 01:56:33,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:56:33,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 01:56:33,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:56:33,690 INFO L87 Difference]: Start difference. First operand 111902 states and 127590 transitions. Second operand has 11 states, 11 states have (on average 84.27272727272727) internal successors, (927), 10 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 01:56:38,297 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 01:56:38,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 01:56:38,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 876 GetRequests, 855 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=176, Invalid=330, Unknown=0, NotChecked=0, Total=506 [2023-12-16 01:56:38,299 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6133 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 5962 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6133 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 6330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 5962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:56:38,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6133 Valid, 74 Invalid, 6330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 5962 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-16 01:56:38,300 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 01:56:38,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 01:56:38,318 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 01:56:38,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:56:38,502 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (111902states) and FLOYD_HOARE automaton (currently 17 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (21519 states constructed, input type IntersectNwa). [2023-12-16 01:56:38,505 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:56:38,506 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 01:56:38,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 01:56:38 BoogieIcfgContainer [2023-12-16 01:56:38,508 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 01:56:38,508 INFO L158 Benchmark]: Toolchain (without parser) took 58349.81ms. Allocated memory was 190.8MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 121.0MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-16 01:56:38,508 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory was 144.1MB in the beginning and 143.9MB in the end (delta: 172.1kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 01:56:38,508 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1108.17ms. Allocated memory was 190.8MB in the beginning and 231.7MB in the end (delta: 40.9MB). Free memory was 120.8MB in the beginning and 115.9MB in the end (delta: 4.9MB). Peak memory consumption was 56.8MB. Max. memory is 8.0GB. [2023-12-16 01:56:38,509 INFO L158 Benchmark]: Boogie Procedure Inliner took 268.52ms. Allocated memory is still 231.7MB. Free memory was 115.9MB in the beginning and 131.9MB in the end (delta: -16.0MB). Peak memory consumption was 63.6MB. Max. memory is 8.0GB. [2023-12-16 01:56:38,509 INFO L158 Benchmark]: Boogie Preprocessor took 383.95ms. Allocated memory was 231.7MB in the beginning and 393.2MB in the end (delta: 161.5MB). Free memory was 131.9MB in the beginning and 271.6MB in the end (delta: -139.7MB). Peak memory consumption was 91.6MB. Max. memory is 8.0GB. [2023-12-16 01:56:38,509 INFO L158 Benchmark]: RCFGBuilder took 2905.95ms. Allocated memory was 393.2MB in the beginning and 546.3MB in the end (delta: 153.1MB). Free memory was 271.6MB in the beginning and 333.9MB in the end (delta: -62.3MB). Peak memory consumption was 263.8MB. Max. memory is 8.0GB. [2023-12-16 01:56:38,509 INFO L158 Benchmark]: TraceAbstraction took 53677.13ms. Allocated memory was 546.3MB in the beginning and 3.2GB in the end (delta: 2.6GB). Free memory was 333.4MB in the beginning and 1.6GB in the end (delta: -1.2GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-16 01:56:38,510 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory was 144.1MB in the beginning and 143.9MB in the end (delta: 172.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1108.17ms. Allocated memory was 190.8MB in the beginning and 231.7MB in the end (delta: 40.9MB). Free memory was 120.8MB in the beginning and 115.9MB in the end (delta: 4.9MB). Peak memory consumption was 56.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 268.52ms. Allocated memory is still 231.7MB. Free memory was 115.9MB in the beginning and 131.9MB in the end (delta: -16.0MB). Peak memory consumption was 63.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 383.95ms. Allocated memory was 231.7MB in the beginning and 393.2MB in the end (delta: 161.5MB). Free memory was 131.9MB in the beginning and 271.6MB in the end (delta: -139.7MB). Peak memory consumption was 91.6MB. Max. memory is 8.0GB. * RCFGBuilder took 2905.95ms. Allocated memory was 393.2MB in the beginning and 546.3MB in the end (delta: 153.1MB). Free memory was 271.6MB in the beginning and 333.9MB in the end (delta: -62.3MB). Peak memory consumption was 263.8MB. Max. memory is 8.0GB. * TraceAbstraction took 53677.13ms. Allocated memory was 546.3MB in the beginning and 3.2GB in the end (delta: 2.6GB). Free memory was 333.4MB in the beginning and 1.6GB in the end (delta: -1.2GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. * 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 - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 52). Cancelled while NwaCegarLoop was constructing difference of abstraction (111902states) and FLOYD_HOARE automaton (currently 17 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (21519 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 756 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 53.6s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 38.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16560 SdHoareTripleChecker+Valid, 34.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16560 mSDsluCounter, 9777 SdHoareTripleChecker+Invalid, 28.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 165 mSDsCounter, 8202 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35928 IncrementalHoareTripleChecker+Invalid, 44130 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8202 mSolverCounterUnsat, 9612 mSDtfsCounter, 35928 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1229 GetRequests, 1188 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111902occurred in iteration=12, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 27791 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 3454 NumberOfCodeBlocks, 3454 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 3868 ConstructedInterpolants, 144 QuantifiedInterpolants, 24464 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1084 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 17 InterpolantComputations, 12 PerfectInterpolantSequences, 2797/3020 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 could not prove your program: Timeout Completed graceful shutdown