/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:00:08,707 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:00:08,749 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:00:08,754 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:00:08,754 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:00:08,776 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:00:08,777 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:00:08,778 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:00:08,778 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:00:08,781 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:00:08,781 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:00:08,782 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:00:08,782 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:00:08,783 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:00:08,783 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:00:08,783 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:00:08,783 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:00:08,784 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:00:08,784 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:00:08,785 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:00:08,785 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:00:08,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:00:08,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:00:08,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:00:08,786 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:00:08,786 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:00:08,786 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:00:08,786 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:00:08,787 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:00:08,787 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:00:08,788 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:00:08,788 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:00:08,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:00:08,788 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:00:08,788 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:00:08,788 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:00:08,789 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:00:08,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:00:08,789 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:00:08,789 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:00:08,789 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:00:08,789 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:00:08,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:00:08,790 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:00:08,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:00:09,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:00:09,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:00:09,016 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:00:09,016 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:00:09,017 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label02.c [2023-12-15 19:00:09,997 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:00:10,257 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:00:10,258 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label02.c [2023-12-15 19:00:10,274 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1786d1d2/4caf670c7a544e69adaf1ae8da91d7a8/FLAGb5b4f6944 [2023-12-15 19:00:10,287 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1786d1d2/4caf670c7a544e69adaf1ae8da91d7a8 [2023-12-15 19:00:10,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:00:10,290 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:00:10,292 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:00:10,292 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:00:10,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:00:10,295 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:00:10" (1/1) ... [2023-12-15 19:00:10,296 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1760ddb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:10, skipping insertion in model container [2023-12-15 19:00:10,296 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:00:10" (1/1) ... [2023-12-15 19:00:10,357 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:00:10,510 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/Problem15_label02.c[3558,3571] [2023-12-15 19:00:10,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:00:10,802 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:00:10,839 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/Problem15_label02.c[3558,3571] [2023-12-15 19:00:10,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:00:10,982 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:00:10,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:10 WrapperNode [2023-12-15 19:00:10,984 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:00:10,985 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:00:10,985 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:00:10,985 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:00:10,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:10" (1/1) ... [2023-12-15 19:00:11,030 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:10" (1/1) ... [2023-12-15 19:00:11,143 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1760 [2023-12-15 19:00:11,144 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:00:11,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:00:11,145 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:00:11,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:00:11,154 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:10" (1/1) ... [2023-12-15 19:00:11,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:10" (1/1) ... [2023-12-15 19:00:11,169 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:10" (1/1) ... [2023-12-15 19:00:11,288 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]. [2023-12-15 19:00:11,288 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:10" (1/1) ... [2023-12-15 19:00:11,288 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:10" (1/1) ... [2023-12-15 19:00:11,343 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:10" (1/1) ... [2023-12-15 19:00:11,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:10" (1/1) ... [2023-12-15 19:00:11,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:10" (1/1) ... [2023-12-15 19:00:11,389 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:10" (1/1) ... [2023-12-15 19:00:11,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:00:11,413 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:00:11,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:00:11,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:00:11,414 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:10" (1/1) ... [2023-12-15 19:00:11,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:00:11,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:00:11,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 19:00:11,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:00:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:00:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:00:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:00:11,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:00:11,563 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:00:11,565 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:00:13,379 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:00:13,411 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:00:13,411 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:00:13,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:00:13 BoogieIcfgContainer [2023-12-15 19:00:13,411 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:00:13,413 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:00:13,413 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:00:13,415 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:00:13,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:00:10" (1/3) ... [2023-12-15 19:00:13,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bee7f24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:00:13, skipping insertion in model container [2023-12-15 19:00:13,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:00:10" (2/3) ... [2023-12-15 19:00:13,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bee7f24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:00:13, skipping insertion in model container [2023-12-15 19:00:13,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:00:13" (3/3) ... [2023-12-15 19:00:13,417 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label02.c [2023-12-15 19:00:13,430 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:00:13,430 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:00:13,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:00:13,470 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;@7f9f9ee8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:00:13,471 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:00:13,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 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) [2023-12-15 19:00:13,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-15 19:00:13,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:13,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:00:13,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:13,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:13,484 INFO L85 PathProgramCache]: Analyzing trace with hash -321788248, now seen corresponding path program 1 times [2023-12-15 19:00:13,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:13,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166666109] [2023-12-15 19:00:13,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:13,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:00:13,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:13,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166666109] [2023-12-15 19:00:13,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166666109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:13,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:00:13,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:00:13,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418750523] [2023-12-15 19:00:13,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:13,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:00:13,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:13,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:00:13,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:00:13,621 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 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 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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) [2023-12-15 19:00:13,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:13,656 INFO L93 Difference]: Finished difference Result 723 states and 1375 transitions. [2023-12-15 19:00:13,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:00:13,658 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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 27 [2023-12-15 19:00:13,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:13,665 INFO L225 Difference]: With dead ends: 723 [2023-12-15 19:00:13,666 INFO L226 Difference]: Without dead ends: 360 [2023-12-15 19:00:13,669 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 [2023-12-15 19:00:13,671 INFO L413 NwaCegarLoop]: 623 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, 623 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 [2023-12-15 19:00:13,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 623 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:00:13,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-12-15 19:00:13,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2023-12-15 19:00:13,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.7353760445682451) internal successors, (623), 359 states have internal predecessors, (623), 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) [2023-12-15 19:00:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 623 transitions. [2023-12-15 19:00:13,735 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 623 transitions. Word has length 27 [2023-12-15 19:00:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:13,735 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 623 transitions. [2023-12-15 19:00:13,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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) [2023-12-15 19:00:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 623 transitions. [2023-12-15 19:00:13,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-15 19:00:13,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:13,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:00:13,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 19:00:13,736 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:13,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:13,737 INFO L85 PathProgramCache]: Analyzing trace with hash 489329416, now seen corresponding path program 1 times [2023-12-15 19:00:13,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:13,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980022435] [2023-12-15 19:00:13,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:13,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:00:13,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:13,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980022435] [2023-12-15 19:00:13,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980022435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:13,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:00:13,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:00:13,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324258761] [2023-12-15 19:00:13,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:13,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:00:13,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:13,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:00:13,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:13,838 INFO L87 Difference]: Start difference. First operand 360 states and 623 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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) [2023-12-15 19:00:15,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:15,474 INFO L93 Difference]: Finished difference Result 1046 states and 1824 transitions. [2023-12-15 19:00:15,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:00:15,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 27 [2023-12-15 19:00:15,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:15,478 INFO L225 Difference]: With dead ends: 1046 [2023-12-15 19:00:15,479 INFO L226 Difference]: Without dead ends: 687 [2023-12-15 19:00:15,480 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 [2023-12-15 19:00:15,481 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 309 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:15,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 193 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:00:15,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-12-15 19:00:15,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 679. [2023-12-15 19:00:15,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 678 states have (on average 1.6106194690265487) internal successors, (1092), 678 states have internal predecessors, (1092), 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) [2023-12-15 19:00:15,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1092 transitions. [2023-12-15 19:00:15,502 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1092 transitions. Word has length 27 [2023-12-15 19:00:15,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:15,502 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 1092 transitions. [2023-12-15 19:00:15,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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) [2023-12-15 19:00:15,502 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1092 transitions. [2023-12-15 19:00:15,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-15 19:00:15,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:15,504 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 19:00:15,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 19:00:15,504 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:15,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:15,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1284129673, now seen corresponding path program 1 times [2023-12-15 19:00:15,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:15,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466966971] [2023-12-15 19:00:15,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:15,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:15,705 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:00:15,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:15,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466966971] [2023-12-15 19:00:15,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466966971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:15,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:00:15,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:00:15,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330665491] [2023-12-15 19:00:15,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:15,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:00:15,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:15,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:00:15,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:15,707 INFO L87 Difference]: Start difference. First operand 679 states and 1092 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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) [2023-12-15 19:00:16,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:16,983 INFO L93 Difference]: Finished difference Result 1963 states and 3170 transitions. [2023-12-15 19:00:16,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:00:16,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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 95 [2023-12-15 19:00:16,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:16,987 INFO L225 Difference]: With dead ends: 1963 [2023-12-15 19:00:16,987 INFO L226 Difference]: Without dead ends: 1285 [2023-12-15 19:00:16,989 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 [2023-12-15 19:00:16,990 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 282 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:16,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 358 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:00:16,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2023-12-15 19:00:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1280. [2023-12-15 19:00:17,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1279 states have (on average 1.3956215793588742) internal successors, (1785), 1279 states have internal predecessors, (1785), 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) [2023-12-15 19:00:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1785 transitions. [2023-12-15 19:00:17,028 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1785 transitions. Word has length 95 [2023-12-15 19:00:17,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:17,029 INFO L495 AbstractCegarLoop]: Abstraction has 1280 states and 1785 transitions. [2023-12-15 19:00:17,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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) [2023-12-15 19:00:17,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1785 transitions. [2023-12-15 19:00:17,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-15 19:00:17,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:17,032 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 19:00:17,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 19:00:17,032 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:17,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:17,033 INFO L85 PathProgramCache]: Analyzing trace with hash 421941091, now seen corresponding path program 1 times [2023-12-15 19:00:17,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:17,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594597391] [2023-12-15 19:00:17,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:17,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:00:17,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:17,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594597391] [2023-12-15 19:00:17,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594597391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:17,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:00:17,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:00:17,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362540956] [2023-12-15 19:00:17,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:17,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:00:17,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:17,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:00:17,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:17,187 INFO L87 Difference]: Start difference. First operand 1280 states and 1785 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2023-12-15 19:00:18,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:18,548 INFO L93 Difference]: Finished difference Result 3765 states and 5245 transitions. [2023-12-15 19:00:18,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:00:18,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2023-12-15 19:00:18,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:18,556 INFO L225 Difference]: With dead ends: 3765 [2023-12-15 19:00:18,556 INFO L226 Difference]: Without dead ends: 2486 [2023-12-15 19:00:18,558 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 [2023-12-15 19:00:18,559 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 300 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:18,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 634 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:00:18,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2023-12-15 19:00:18,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2486. [2023-12-15 19:00:18,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2485 states have (on average 1.2446680080482897) internal successors, (3093), 2485 states have internal predecessors, (3093), 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) [2023-12-15 19:00:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3093 transitions. [2023-12-15 19:00:18,590 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3093 transitions. Word has length 103 [2023-12-15 19:00:18,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:18,590 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 3093 transitions. [2023-12-15 19:00:18,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2023-12-15 19:00:18,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3093 transitions. [2023-12-15 19:00:18,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-15 19:00:18,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:18,593 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 19:00:18,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 19:00:18,593 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:18,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:18,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1040599351, now seen corresponding path program 1 times [2023-12-15 19:00:18,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:18,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444024094] [2023-12-15 19:00:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:18,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:18,727 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:00:18,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:18,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444024094] [2023-12-15 19:00:18,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444024094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:18,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:00:18,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:00:18,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205758944] [2023-12-15 19:00:18,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:18,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:00:18,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:18,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:00:18,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:18,729 INFO L87 Difference]: Start difference. First operand 2486 states and 3093 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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) [2023-12-15 19:00:20,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:20,061 INFO L93 Difference]: Finished difference Result 6172 states and 7858 transitions. [2023-12-15 19:00:20,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:00:20,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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 109 [2023-12-15 19:00:20,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:20,070 INFO L225 Difference]: With dead ends: 6172 [2023-12-15 19:00:20,070 INFO L226 Difference]: Without dead ends: 3687 [2023-12-15 19:00:20,073 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 [2023-12-15 19:00:20,079 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 234 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:20,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 361 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:00:20,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2023-12-15 19:00:20,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3685. [2023-12-15 19:00:20,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3685 states, 3684 states have (on average 1.1981541802388709) internal successors, (4414), 3684 states have internal predecessors, (4414), 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) [2023-12-15 19:00:20,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 4414 transitions. [2023-12-15 19:00:20,120 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 4414 transitions. Word has length 109 [2023-12-15 19:00:20,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:20,120 INFO L495 AbstractCegarLoop]: Abstraction has 3685 states and 4414 transitions. [2023-12-15 19:00:20,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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) [2023-12-15 19:00:20,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 4414 transitions. [2023-12-15 19:00:20,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-15 19:00:20,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:20,122 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:00:20,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 19:00:20,123 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:20,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:20,123 INFO L85 PathProgramCache]: Analyzing trace with hash 980408088, now seen corresponding path program 1 times [2023-12-15 19:00:20,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:20,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330374816] [2023-12-15 19:00:20,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:20,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-15 19:00:20,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:20,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330374816] [2023-12-15 19:00:20,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330374816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:20,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:00:20,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:00:20,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345489644] [2023-12-15 19:00:20,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:20,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:00:20,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:20,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:00:20,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:20,326 INFO L87 Difference]: Start difference. First operand 3685 states and 4414 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 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) [2023-12-15 19:00:21,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:21,757 INFO L93 Difference]: Finished difference Result 10068 states and 12097 transitions. [2023-12-15 19:00:21,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:00:21,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 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 223 [2023-12-15 19:00:21,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:21,775 INFO L225 Difference]: With dead ends: 10068 [2023-12-15 19:00:21,776 INFO L226 Difference]: Without dead ends: 6384 [2023-12-15 19:00:21,780 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 [2023-12-15 19:00:21,782 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 117 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:21,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 315 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:00:21,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6384 states. [2023-12-15 19:00:21,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6384 to 5484. [2023-12-15 19:00:21,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5484 states, 5483 states have (on average 1.1707094656210104) internal successors, (6419), 5483 states have internal predecessors, (6419), 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) [2023-12-15 19:00:21,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5484 states to 5484 states and 6419 transitions. [2023-12-15 19:00:21,863 INFO L78 Accepts]: Start accepts. Automaton has 5484 states and 6419 transitions. Word has length 223 [2023-12-15 19:00:21,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:21,864 INFO L495 AbstractCegarLoop]: Abstraction has 5484 states and 6419 transitions. [2023-12-15 19:00:21,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 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) [2023-12-15 19:00:21,864 INFO L276 IsEmpty]: Start isEmpty. Operand 5484 states and 6419 transitions. [2023-12-15 19:00:21,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-12-15 19:00:21,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:21,868 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:00:21,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 19:00:21,869 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:21,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:21,869 INFO L85 PathProgramCache]: Analyzing trace with hash -866315897, now seen corresponding path program 1 times [2023-12-15 19:00:21,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:21,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627439014] [2023-12-15 19:00:21,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:21,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:22,396 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-15 19:00:22,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:22,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627439014] [2023-12-15 19:00:22,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627439014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:22,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:00:22,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:00:22,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148953684] [2023-12-15 19:00:22,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:22,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:00:22,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:22,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:00:22,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:22,398 INFO L87 Difference]: Start difference. First operand 5484 states and 6419 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 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) [2023-12-15 19:00:23,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:23,515 INFO L93 Difference]: Finished difference Result 11266 states and 13148 transitions. [2023-12-15 19:00:23,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:00:23,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 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 288 [2023-12-15 19:00:23,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:23,531 INFO L225 Difference]: With dead ends: 11266 [2023-12-15 19:00:23,532 INFO L226 Difference]: Without dead ends: 5783 [2023-12-15 19:00:23,537 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 [2023-12-15 19:00:23,539 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:23,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 357 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 19:00:23,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5783 states. [2023-12-15 19:00:23,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5783 to 5783. [2023-12-15 19:00:23,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5783 states, 5782 states have (on average 1.1629194050501557) internal successors, (6724), 5782 states have internal predecessors, (6724), 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) [2023-12-15 19:00:23,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5783 states to 5783 states and 6724 transitions. [2023-12-15 19:00:23,613 INFO L78 Accepts]: Start accepts. Automaton has 5783 states and 6724 transitions. Word has length 288 [2023-12-15 19:00:23,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:23,613 INFO L495 AbstractCegarLoop]: Abstraction has 5783 states and 6724 transitions. [2023-12-15 19:00:23,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 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) [2023-12-15 19:00:23,613 INFO L276 IsEmpty]: Start isEmpty. Operand 5783 states and 6724 transitions. [2023-12-15 19:00:23,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-12-15 19:00:23,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:23,616 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:00:23,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 19:00:23,616 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:23,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:23,616 INFO L85 PathProgramCache]: Analyzing trace with hash 18096632, now seen corresponding path program 1 times [2023-12-15 19:00:23,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:23,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669356062] [2023-12-15 19:00:23,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:23,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-15 19:00:23,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:23,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669356062] [2023-12-15 19:00:23,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669356062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:23,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:00:23,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:00:23,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451511723] [2023-12-15 19:00:23,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:23,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:00:23,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:23,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:00:23,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:23,815 INFO L87 Difference]: Start difference. First operand 5783 states and 6724 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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) [2023-12-15 19:00:25,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:25,252 INFO L93 Difference]: Finished difference Result 13359 states and 15777 transitions. [2023-12-15 19:00:25,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:00:25,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 314 [2023-12-15 19:00:25,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:25,275 INFO L225 Difference]: With dead ends: 13359 [2023-12-15 19:00:25,275 INFO L226 Difference]: Without dead ends: 7876 [2023-12-15 19:00:25,282 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 [2023-12-15 19:00:25,283 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 286 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:25,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 320 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:00:25,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7876 states. [2023-12-15 19:00:25,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7876 to 5181. [2023-12-15 19:00:25,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5181 states, 5180 states have (on average 1.1722007722007721) internal successors, (6072), 5180 states have internal predecessors, (6072), 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) [2023-12-15 19:00:25,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 6072 transitions. [2023-12-15 19:00:25,346 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 6072 transitions. Word has length 314 [2023-12-15 19:00:25,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:25,346 INFO L495 AbstractCegarLoop]: Abstraction has 5181 states and 6072 transitions. [2023-12-15 19:00:25,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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) [2023-12-15 19:00:25,346 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 6072 transitions. [2023-12-15 19:00:25,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-12-15 19:00:25,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:25,350 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:00:25,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 19:00:25,351 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:25,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:25,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1886749683, now seen corresponding path program 1 times [2023-12-15 19:00:25,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:25,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467888382] [2023-12-15 19:00:25,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:25,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 51 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:00:26,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:26,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467888382] [2023-12-15 19:00:26,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467888382] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:00:26,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692096644] [2023-12-15 19:00:26,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:26,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:00:26,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:00:26,006 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:00:26,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:00:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:26,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:00:26,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:00:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:00:26,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:00:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:00:27,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692096644] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:00:27,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:00:27,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 9 [2023-12-15 19:00:27,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980231513] [2023-12-15 19:00:27,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:27,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:00:27,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:27,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:00:27,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-12-15 19:00:27,873 INFO L87 Difference]: Start difference. First operand 5181 states and 6072 transitions. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 4 states have internal predecessors, (374), 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) [2023-12-15 19:00:31,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:31,136 INFO L93 Difference]: Finished difference Result 14881 states and 17735 transitions. [2023-12-15 19:00:31,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:00:31,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 4 states have internal predecessors, (374), 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 374 [2023-12-15 19:00:31,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:31,154 INFO L225 Difference]: With dead ends: 14881 [2023-12-15 19:00:31,155 INFO L226 Difference]: Without dead ends: 10000 [2023-12-15 19:00:31,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 742 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-12-15 19:00:31,160 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 609 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 2365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 665 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:31,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 96 Invalid, 2365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [665 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-15 19:00:31,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10000 states. [2023-12-15 19:00:31,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10000 to 8478. [2023-12-15 19:00:31,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8478 states, 8477 states have (on average 1.2098619794738705) internal successors, (10256), 8477 states have internal predecessors, (10256), 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) [2023-12-15 19:00:31,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8478 states to 8478 states and 10256 transitions. [2023-12-15 19:00:31,259 INFO L78 Accepts]: Start accepts. Automaton has 8478 states and 10256 transitions. Word has length 374 [2023-12-15 19:00:31,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:31,259 INFO L495 AbstractCegarLoop]: Abstraction has 8478 states and 10256 transitions. [2023-12-15 19:00:31,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 4 states have internal predecessors, (374), 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) [2023-12-15 19:00:31,260 INFO L276 IsEmpty]: Start isEmpty. Operand 8478 states and 10256 transitions. [2023-12-15 19:00:31,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-12-15 19:00:31,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:31,263 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:00:31,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:00:31,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:00:31,469 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:31,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:31,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1883886428, now seen corresponding path program 1 times [2023-12-15 19:00:31,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:31,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354176487] [2023-12-15 19:00:31,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:31,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:00:31,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:31,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354176487] [2023-12-15 19:00:31,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354176487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:31,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:00:31,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:00:31,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262166950] [2023-12-15 19:00:31,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:31,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:00:31,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:31,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:00:31,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:31,715 INFO L87 Difference]: Start difference. First operand 8478 states and 10256 transitions. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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) [2023-12-15 19:00:33,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:33,032 INFO L93 Difference]: Finished difference Result 19654 states and 24323 transitions. [2023-12-15 19:00:33,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:00:33,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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 390 [2023-12-15 19:00:33,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:33,050 INFO L225 Difference]: With dead ends: 19654 [2023-12-15 19:00:33,050 INFO L226 Difference]: Without dead ends: 11476 [2023-12-15 19:00:33,056 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 [2023-12-15 19:00:33,057 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 246 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:33,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 599 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:00:33,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11476 states. [2023-12-15 19:00:33,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11476 to 10576. [2023-12-15 19:00:33,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10576 states, 10575 states have (on average 1.1915839243498818) internal successors, (12601), 10575 states have internal predecessors, (12601), 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) [2023-12-15 19:00:33,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10576 states to 10576 states and 12601 transitions. [2023-12-15 19:00:33,156 INFO L78 Accepts]: Start accepts. Automaton has 10576 states and 12601 transitions. Word has length 390 [2023-12-15 19:00:33,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:33,156 INFO L495 AbstractCegarLoop]: Abstraction has 10576 states and 12601 transitions. [2023-12-15 19:00:33,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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) [2023-12-15 19:00:33,157 INFO L276 IsEmpty]: Start isEmpty. Operand 10576 states and 12601 transitions. [2023-12-15 19:00:33,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-12-15 19:00:33,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:33,161 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:00:33,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 19:00:33,161 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:33,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:33,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1272168617, now seen corresponding path program 1 times [2023-12-15 19:00:33,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:33,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388317473] [2023-12-15 19:00:33,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:33,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-15 19:00:33,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:33,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388317473] [2023-12-15 19:00:33,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388317473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:33,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:00:33,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:00:33,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79866151] [2023-12-15 19:00:33,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:33,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:00:33,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:33,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:00:33,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:33,374 INFO L87 Difference]: Start difference. First operand 10576 states and 12601 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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) [2023-12-15 19:00:34,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:34,878 INFO L93 Difference]: Finished difference Result 24141 states and 29344 transitions. [2023-12-15 19:00:34,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:00:34,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 404 [2023-12-15 19:00:34,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:34,902 INFO L225 Difference]: With dead ends: 24141 [2023-12-15 19:00:34,903 INFO L226 Difference]: Without dead ends: 13865 [2023-12-15 19:00:34,912 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 [2023-12-15 19:00:34,913 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 300 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:34,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 613 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:00:34,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13865 states. [2023-12-15 19:00:35,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13865 to 13263. [2023-12-15 19:00:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13263 states, 13262 states have (on average 1.1728246116724477) internal successors, (15554), 13262 states have internal predecessors, (15554), 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) [2023-12-15 19:00:35,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13263 states to 13263 states and 15554 transitions. [2023-12-15 19:00:35,147 INFO L78 Accepts]: Start accepts. Automaton has 13263 states and 15554 transitions. Word has length 404 [2023-12-15 19:00:35,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:35,148 INFO L495 AbstractCegarLoop]: Abstraction has 13263 states and 15554 transitions. [2023-12-15 19:00:35,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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) [2023-12-15 19:00:35,149 INFO L276 IsEmpty]: Start isEmpty. Operand 13263 states and 15554 transitions. [2023-12-15 19:00:35,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-12-15 19:00:35,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:35,157 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:00:35,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 19:00:35,157 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:35,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:35,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1042416771, now seen corresponding path program 1 times [2023-12-15 19:00:35,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:35,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612192453] [2023-12-15 19:00:35,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:35,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 26 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:00:35,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:35,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612192453] [2023-12-15 19:00:35,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612192453] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:00:35,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855536920] [2023-12-15 19:00:35,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:35,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:00:35,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:00:35,966 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:00:35,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:00:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:36,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 19:00:36,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:00:38,781 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 26 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:00:38,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:00:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 129 proven. 207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:00:39,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855536920] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:00:39,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 19:00:39,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-12-15 19:00:39,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855620429] [2023-12-15 19:00:39,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 19:00:39,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 19:00:39,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:39,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 19:00:39,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2023-12-15 19:00:39,394 INFO L87 Difference]: Start difference. First operand 13263 states and 15554 transitions. Second operand has 13 states, 13 states have (on average 90.15384615384616) internal successors, (1172), 12 states have internal predecessors, (1172), 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) [2023-12-15 19:00:50,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:50,600 INFO L93 Difference]: Finished difference Result 55656 states and 64401 transitions. [2023-12-15 19:00:50,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 19:00:50,601 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 90.15384615384616) internal successors, (1172), 12 states have internal predecessors, (1172), 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 481 [2023-12-15 19:00:50,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:50,638 INFO L225 Difference]: With dead ends: 55656 [2023-12-15 19:00:50,638 INFO L226 Difference]: Without dead ends: 42693 [2023-12-15 19:00:50,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 973 GetRequests, 954 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2023-12-15 19:00:50,652 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 9067 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 5508 mSolverCounterSat, 5673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9067 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 11181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5673 IncrementalHoareTripleChecker+Valid, 5508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:50,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9067 Valid, 222 Invalid, 11181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5673 Valid, 5508 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2023-12-15 19:00:50,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42693 states. [2023-12-15 19:00:50,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42693 to 23754. [2023-12-15 19:00:50,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23754 states, 23753 states have (on average 1.1582957942154675) internal successors, (27513), 23753 states have internal predecessors, (27513), 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) [2023-12-15 19:00:51,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23754 states to 23754 states and 27513 transitions. [2023-12-15 19:00:51,015 INFO L78 Accepts]: Start accepts. Automaton has 23754 states and 27513 transitions. Word has length 481 [2023-12-15 19:00:51,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:51,015 INFO L495 AbstractCegarLoop]: Abstraction has 23754 states and 27513 transitions. [2023-12-15 19:00:51,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 90.15384615384616) internal successors, (1172), 12 states have internal predecessors, (1172), 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) [2023-12-15 19:00:51,016 INFO L276 IsEmpty]: Start isEmpty. Operand 23754 states and 27513 transitions. [2023-12-15 19:00:51,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2023-12-15 19:00:51,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:51,019 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:00:51,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:00:51,225 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,SelfDestructingSolverStorable11 [2023-12-15 19:00:51,225 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:51,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:51,226 INFO L85 PathProgramCache]: Analyzing trace with hash 690573305, now seen corresponding path program 1 times [2023-12-15 19:00:51,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:51,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606064862] [2023-12-15 19:00:51,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:51,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:51,590 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 312 proven. 39 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-15 19:00:51,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:51,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606064862] [2023-12-15 19:00:51,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606064862] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:00:51,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541760841] [2023-12-15 19:00:51,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:51,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:00:51,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:00:51,591 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:00:51,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:00:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:51,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:00:51,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:00:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 351 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-15 19:00:52,542 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:00:52,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541760841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:52,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:00:52,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 19:00:52,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026094106] [2023-12-15 19:00:52,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:52,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:00:52,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:52,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:00:52,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:00:52,547 INFO L87 Difference]: Start difference. First operand 23754 states and 27513 transitions. Second operand has 4 states, 4 states have (on average 115.5) internal successors, (462), 3 states have internal predecessors, (462), 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) [2023-12-15 19:00:54,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:54,172 INFO L93 Difference]: Finished difference Result 49304 states and 56991 transitions. [2023-12-15 19:00:54,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:00:54,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 115.5) internal successors, (462), 3 states have internal predecessors, (462), 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 487 [2023-12-15 19:00:54,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:54,200 INFO L225 Difference]: With dead ends: 49304 [2023-12-15 19:00:54,200 INFO L226 Difference]: Without dead ends: 25252 [2023-12-15 19:00:54,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:00:54,218 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 266 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:54,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 357 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:00:54,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25252 states. [2023-12-15 19:00:54,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25252 to 24950. [2023-12-15 19:00:54,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24950 states, 24949 states have (on average 1.1345544911619705) internal successors, (28306), 24949 states have internal predecessors, (28306), 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) [2023-12-15 19:00:54,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24950 states to 24950 states and 28306 transitions. [2023-12-15 19:00:54,547 INFO L78 Accepts]: Start accepts. Automaton has 24950 states and 28306 transitions. Word has length 487 [2023-12-15 19:00:54,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:54,548 INFO L495 AbstractCegarLoop]: Abstraction has 24950 states and 28306 transitions. [2023-12-15 19:00:54,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.5) internal successors, (462), 3 states have internal predecessors, (462), 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) [2023-12-15 19:00:54,548 INFO L276 IsEmpty]: Start isEmpty. Operand 24950 states and 28306 transitions. [2023-12-15 19:00:54,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 19:00:54,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:54,552 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:00:54,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:00:54,757 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 [2023-12-15 19:00:54,758 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:54,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:54,758 INFO L85 PathProgramCache]: Analyzing trace with hash -818786835, now seen corresponding path program 1 times [2023-12-15 19:00:54,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:54,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211156577] [2023-12-15 19:00:54,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:54,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 303 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-15 19:00:55,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:55,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211156577] [2023-12-15 19:00:55,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211156577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:55,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:00:55,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:00:55,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298455518] [2023-12-15 19:00:55,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:55,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:00:55,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:55,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:00:55,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:55,061 INFO L87 Difference]: Start difference. First operand 24950 states and 28306 transitions. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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) [2023-12-15 19:00:56,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:56,449 INFO L93 Difference]: Finished difference Result 60658 states and 68791 transitions. [2023-12-15 19:00:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:00:56,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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 526 [2023-12-15 19:00:56,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:56,479 INFO L225 Difference]: With dead ends: 60658 [2023-12-15 19:00:56,480 INFO L226 Difference]: Without dead ends: 30028 [2023-12-15 19:00:56,493 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 [2023-12-15 19:00:56,494 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 236 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:56,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 570 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 19:00:56,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30028 states. [2023-12-15 19:00:56,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30028 to 24338. [2023-12-15 19:00:56,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24338 states, 24337 states have (on average 1.092985988412705) internal successors, (26600), 24337 states have internal predecessors, (26600), 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) [2023-12-15 19:00:56,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24338 states to 24338 states and 26600 transitions. [2023-12-15 19:00:56,783 INFO L78 Accepts]: Start accepts. Automaton has 24338 states and 26600 transitions. Word has length 526 [2023-12-15 19:00:56,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:56,783 INFO L495 AbstractCegarLoop]: Abstraction has 24338 states and 26600 transitions. [2023-12-15 19:00:56,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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) [2023-12-15 19:00:56,784 INFO L276 IsEmpty]: Start isEmpty. Operand 24338 states and 26600 transitions. [2023-12-15 19:00:56,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2023-12-15 19:00:56,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:56,788 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:00:56,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 19:00:56,788 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:56,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:56,789 INFO L85 PathProgramCache]: Analyzing trace with hash 2045570561, now seen corresponding path program 1 times [2023-12-15 19:00:56,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:56,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115296583] [2023-12-15 19:00:56,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:56,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 78 proven. 288 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-15 19:00:57,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:57,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115296583] [2023-12-15 19:00:57,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115296583] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:00:57,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193696668] [2023-12-15 19:00:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:57,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:00:57,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:00:57,547 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:00:57,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:00:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:57,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:00:57,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:00:57,740 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-12-15 19:00:57,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:00:57,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193696668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:57,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:00:57,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-12-15 19:00:57,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272763733] [2023-12-15 19:00:57,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:57,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:00:57,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:57,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:00:57,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:00:57,743 INFO L87 Difference]: Start difference. First operand 24338 states and 26600 transitions. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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) [2023-12-15 19:00:58,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:00:58,872 INFO L93 Difference]: Finished difference Result 48669 states and 53189 transitions. [2023-12-15 19:00:58,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:00:58,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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 569 [2023-12-15 19:00:58,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:00:58,894 INFO L225 Difference]: With dead ends: 48669 [2023-12-15 19:00:58,894 INFO L226 Difference]: Without dead ends: 24332 [2023-12-15 19:00:58,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:00:58,914 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 303 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:00:58,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 555 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 19:00:58,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24332 states. [2023-12-15 19:00:59,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24332 to 23435. [2023-12-15 19:00:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23435 states, 23434 states have (on average 1.057139199453785) internal successors, (24773), 23434 states have internal predecessors, (24773), 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) [2023-12-15 19:00:59,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23435 states to 23435 states and 24773 transitions. [2023-12-15 19:00:59,167 INFO L78 Accepts]: Start accepts. Automaton has 23435 states and 24773 transitions. Word has length 569 [2023-12-15 19:00:59,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:00:59,167 INFO L495 AbstractCegarLoop]: Abstraction has 23435 states and 24773 transitions. [2023-12-15 19:00:59,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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) [2023-12-15 19:00:59,167 INFO L276 IsEmpty]: Start isEmpty. Operand 23435 states and 24773 transitions. [2023-12-15 19:00:59,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-15 19:00:59,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:00:59,174 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:00:59,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 19:00:59,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 19:00:59,376 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:00:59,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:00:59,377 INFO L85 PathProgramCache]: Analyzing trace with hash 190179907, now seen corresponding path program 1 times [2023-12-15 19:00:59,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:00:59,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992863876] [2023-12-15 19:00:59,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:00:59,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:00:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:00:59,579 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-12-15 19:00:59,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:00:59,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992863876] [2023-12-15 19:00:59,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992863876] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:00:59,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:00:59,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:00:59,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275583450] [2023-12-15 19:00:59,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:00:59,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:00:59,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:00:59,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:00:59,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:00:59,581 INFO L87 Difference]: Start difference. First operand 23435 states and 24773 transitions. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2023-12-15 19:01:00,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:00,745 INFO L93 Difference]: Finished difference Result 51351 states and 54422 transitions. [2023-12-15 19:01:00,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:00,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 624 [2023-12-15 19:01:00,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:00,769 INFO L225 Difference]: With dead ends: 51351 [2023-12-15 19:01:00,770 INFO L226 Difference]: Without dead ends: 28216 [2023-12-15 19:01:00,777 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 [2023-12-15 19:01:00,777 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 338 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:00,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 455 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 19:01:00,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28216 states. [2023-12-15 19:01:00,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28216 to 25226. [2023-12-15 19:01:00,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25226 states, 25225 states have (on average 1.0541129831516354) internal successors, (26590), 25225 states have internal predecessors, (26590), 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) [2023-12-15 19:01:01,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25226 states to 25226 states and 26590 transitions. [2023-12-15 19:01:01,001 INFO L78 Accepts]: Start accepts. Automaton has 25226 states and 26590 transitions. Word has length 624 [2023-12-15 19:01:01,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:01,001 INFO L495 AbstractCegarLoop]: Abstraction has 25226 states and 26590 transitions. [2023-12-15 19:01:01,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2023-12-15 19:01:01,002 INFO L276 IsEmpty]: Start isEmpty. Operand 25226 states and 26590 transitions. [2023-12-15 19:01:01,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-12-15 19:01:01,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:01,010 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:01:01,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 19:01:01,010 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:01,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:01,011 INFO L85 PathProgramCache]: Analyzing trace with hash -214185052, now seen corresponding path program 1 times [2023-12-15 19:01:01,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:01,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726798132] [2023-12-15 19:01:01,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:01,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:01,971 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 77 proven. 464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:01:01,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:01,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726798132] [2023-12-15 19:01:01,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726798132] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:01:01,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493818598] [2023-12-15 19:01:01,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:01,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:01,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:01:01,973 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:01:01,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:01:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:02,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 19:01:02,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:01:02,895 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 26 proven. 515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:01:02,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:01:04,779 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 541 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:01:04,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493818598] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:01:04,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:01:04,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 13 [2023-12-15 19:01:04,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449739827] [2023-12-15 19:01:04,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:04,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 19:01:04,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:04,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 19:01:04,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=98, Unknown=0, NotChecked=0, Total=182 [2023-12-15 19:01:04,781 INFO L87 Difference]: Start difference. First operand 25226 states and 26590 transitions. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 5 states have internal predecessors, (668), 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) [2023-12-15 19:01:06,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:06,979 INFO L93 Difference]: Finished difference Result 52863 states and 55691 transitions. [2023-12-15 19:01:06,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:01:06,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 5 states have internal predecessors, (668), 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 668 [2023-12-15 19:01:06,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:07,007 INFO L225 Difference]: With dead ends: 52863 [2023-12-15 19:01:07,008 INFO L226 Difference]: Without dead ends: 27638 [2023-12-15 19:01:07,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1339 GetRequests, 1327 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=98, Unknown=0, NotChecked=0, Total=182 [2023-12-15 19:01:07,027 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 616 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:07,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 70 Invalid, 1915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 19:01:07,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27638 states. [2023-12-15 19:01:07,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27638 to 24927. [2023-12-15 19:01:07,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24927 states, 24926 states have (on average 1.0532375832464094) internal successors, (26253), 24926 states have internal predecessors, (26253), 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) [2023-12-15 19:01:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24927 states to 24927 states and 26253 transitions. [2023-12-15 19:01:07,298 INFO L78 Accepts]: Start accepts. Automaton has 24927 states and 26253 transitions. Word has length 668 [2023-12-15 19:01:07,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:07,298 INFO L495 AbstractCegarLoop]: Abstraction has 24927 states and 26253 transitions. [2023-12-15 19:01:07,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 5 states have internal predecessors, (668), 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) [2023-12-15 19:01:07,299 INFO L276 IsEmpty]: Start isEmpty. Operand 24927 states and 26253 transitions. [2023-12-15 19:01:07,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-12-15 19:01:07,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:07,305 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:07,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:01:07,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 19:01:07,515 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:07,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:07,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1378774119, now seen corresponding path program 1 times [2023-12-15 19:01:07,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:07,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87023452] [2023-12-15 19:01:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:07,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2023-12-15 19:01:07,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:07,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87023452] [2023-12-15 19:01:07,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87023452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:07,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:07,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:07,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438404103] [2023-12-15 19:01:07,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:07,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:07,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:07,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:07,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:07,723 INFO L87 Difference]: Start difference. First operand 24927 states and 26253 transitions. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 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... [2023-12-15 19:01:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:07,973 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 [2023-12-15 19:01:07,973 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 210 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:07,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 7 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:01:07,974 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:01:07,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 19:01:07,975 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (24927states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (327 states constructed, input type IntersectNwa). [2023-12-15 19:01:07,979 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:07,982 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:01:07,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:01:07 BoogieIcfgContainer [2023-12-15 19:01:07,983 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:01:07,984 INFO L158 Benchmark]: Toolchain (without parser) took 57694.01ms. Allocated memory was 242.2MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 182.2MB in the beginning and 411.9MB in the end (delta: -229.6MB). Peak memory consumption was 778.0MB. Max. memory is 8.0GB. [2023-12-15 19:01:07,984 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 201.3MB. Free memory is still 148.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:01:07,984 INFO L158 Benchmark]: CACSL2BoogieTranslator took 692.91ms. Allocated memory was 242.2MB in the beginning and 302.0MB in the end (delta: 59.8MB). Free memory was 182.2MB in the beginning and 230.0MB in the end (delta: -47.8MB). Peak memory consumption was 62.3MB. Max. memory is 8.0GB. [2023-12-15 19:01:07,984 INFO L158 Benchmark]: Boogie Procedure Inliner took 158.88ms. Allocated memory is still 302.0MB. Free memory was 230.0MB in the beginning and 190.7MB in the end (delta: 39.3MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-12-15 19:01:07,984 INFO L158 Benchmark]: Boogie Preprocessor took 266.97ms. Allocated memory is still 302.0MB. Free memory was 190.7MB in the beginning and 209.5MB in the end (delta: -18.8MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. [2023-12-15 19:01:07,985 INFO L158 Benchmark]: RCFGBuilder took 1998.47ms. Allocated memory was 302.0MB in the beginning and 564.1MB in the end (delta: 262.1MB). Free memory was 209.5MB in the beginning and 364.8MB in the end (delta: -155.3MB). Peak memory consumption was 116.9MB. Max. memory is 8.0GB. [2023-12-15 19:01:07,985 INFO L158 Benchmark]: TraceAbstraction took 54570.64ms. Allocated memory was 564.1MB in the beginning and 1.2GB in the end (delta: 684.7MB). Free memory was 364.3MB in the beginning and 411.9MB in the end (delta: -47.6MB). Peak memory consumption was 637.2MB. Max. memory is 8.0GB. [2023-12-15 19:01:07,986 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 201.3MB. Free memory is still 148.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 692.91ms. Allocated memory was 242.2MB in the beginning and 302.0MB in the end (delta: 59.8MB). Free memory was 182.2MB in the beginning and 230.0MB in the end (delta: -47.8MB). Peak memory consumption was 62.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 158.88ms. Allocated memory is still 302.0MB. Free memory was 230.0MB in the beginning and 190.7MB in the end (delta: 39.3MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 266.97ms. Allocated memory is still 302.0MB. Free memory was 190.7MB in the beginning and 209.5MB in the end (delta: -18.8MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. * RCFGBuilder took 1998.47ms. Allocated memory was 302.0MB in the beginning and 564.1MB in the end (delta: 262.1MB). Free memory was 209.5MB in the beginning and 364.8MB in the end (delta: -155.3MB). Peak memory consumption was 116.9MB. Max. memory is 8.0GB. * TraceAbstraction took 54570.64ms. Allocated memory was 564.1MB in the beginning and 1.2GB in the end (delta: 684.7MB). Free memory was 364.3MB in the beginning and 411.9MB in the end (delta: -47.6MB). Peak memory consumption was 637.2MB. 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: 101]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 101). Cancelled while NwaCegarLoop was constructing difference of abstraction (24927states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (327 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 362 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 54.5s, OverallIterations: 18, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 35.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13824 SdHoareTripleChecker+Valid, 32.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13824 mSDsluCounter, 6705 SdHoareTripleChecker+Invalid, 28.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 741 mSDsCounter, 9592 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20821 IncrementalHoareTripleChecker+Invalid, 30413 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9592 mSolverCounterUnsat, 5964 mSDtfsCounter, 20821 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4158 GetRequests, 4099 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25226occurred in iteration=16, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 17 MinimizatonAttempts, 38163 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 13.5s InterpolantComputationTime, 8957 NumberOfCodeBlocks, 8957 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 10454 ConstructedInterpolants, 598 QuantifiedInterpolants, 51755 SizeOfPredicates, 1 NumberOfNonLiveVariables, 3161 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 26 InterpolantComputations, 17 PerfectInterpolantSequences, 5535/7847 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