/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 17:28:10,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 17:28:10,204 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 17:28:10,207 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 17:28:10,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 17:28:10,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 17:28:10,233 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 17:28:10,234 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 17:28:10,234 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 17:28:10,237 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 17:28:10,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 17:28:10,238 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 17:28:10,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 17:28:10,239 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 17:28:10,239 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 17:28:10,239 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 17:28:10,239 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 17:28:10,240 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 17:28:10,240 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 17:28:10,240 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 17:28:10,240 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 17:28:10,240 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 17:28:10,240 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 17:28:10,241 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 17:28:10,241 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 17:28:10,241 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 17:28:10,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 17:28:10,241 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 17:28:10,242 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 17:28:10,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 17:28:10,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 17:28:10,243 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 17:28:10,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:28:10,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 17:28:10,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 17:28:10,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 17:28:10,243 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 17:28:10,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 17:28:10,243 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 17:28:10,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 17:28:10,244 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 17:28:10,244 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 17:28:10,244 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 17:28:10,244 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 17:28:10,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 17:28:10,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 17:28:10,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 17:28:10,474 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 17:28:10,476 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 17:28:10,476 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label00.c [2023-12-20 17:28:11,691 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 17:28:11,959 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 17:28:11,959 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label00.c [2023-12-20 17:28:11,980 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/414e489c8/f6d8e1bc9bf645fdaf6b82c9e31ff630/FLAGcd1aa7114 [2023-12-20 17:28:11,993 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/414e489c8/f6d8e1bc9bf645fdaf6b82c9e31ff630 [2023-12-20 17:28:11,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 17:28:11,996 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 17:28:11,998 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 17:28:11,998 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 17:28:12,002 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 17:28:12,002 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:28:11" (1/1) ... [2023-12-20 17:28:12,003 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36406ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:12, skipping insertion in model container [2023-12-20 17:28:12,003 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:28:11" (1/1) ... [2023-12-20 17:28:12,081 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 17:28:12,276 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/Problem17_label00.c[7994,8007] [2023-12-20 17:28:12,681 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:28:12,690 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 17:28:12,713 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/Problem17_label00.c[7994,8007] [2023-12-20 17:28:12,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:28:12,924 INFO L206 MainTranslator]: Completed translation [2023-12-20 17:28:12,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:12 WrapperNode [2023-12-20 17:28:12,924 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 17:28:12,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 17:28:12,926 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 17:28:12,926 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 17:28:12,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:12" (1/1) ... [2023-12-20 17:28:12,969 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:12" (1/1) ... [2023-12-20 17:28:13,174 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-20 17:28:13,175 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 17:28:13,175 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 17:28:13,175 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 17:28:13,176 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 17:28:13,183 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:12" (1/1) ... [2023-12-20 17:28:13,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:12" (1/1) ... [2023-12-20 17:28:13,208 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:12" (1/1) ... [2023-12-20 17:28:13,317 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]. [2023-12-20 17:28:13,317 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:12" (1/1) ... [2023-12-20 17:28:13,317 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:12" (1/1) ... [2023-12-20 17:28:13,446 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:12" (1/1) ... [2023-12-20 17:28:13,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:12" (1/1) ... [2023-12-20 17:28:13,501 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:12" (1/1) ... [2023-12-20 17:28:13,514 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:12" (1/1) ... [2023-12-20 17:28:13,561 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 17:28:13,562 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 17:28:13,563 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 17:28:13,563 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 17:28:13,563 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:12" (1/1) ... [2023-12-20 17:28:13,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:28:13,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:28:13,593 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) [2023-12-20 17:28:13,595 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 [2023-12-20 17:28:13,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 17:28:13,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 17:28:13,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 17:28:13,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 17:28:13,665 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 17:28:13,667 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 17:28:16,424 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 17:28:16,472 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 17:28:16,472 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 17:28:16,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:28:16 BoogieIcfgContainer [2023-12-20 17:28:16,473 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 17:28:16,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 17:28:16,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 17:28:16,477 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 17:28:16,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:28:11" (1/3) ... [2023-12-20 17:28:16,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ff9164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:28:16, skipping insertion in model container [2023-12-20 17:28:16,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:12" (2/3) ... [2023-12-20 17:28:16,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ff9164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:28:16, skipping insertion in model container [2023-12-20 17:28:16,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:28:16" (3/3) ... [2023-12-20 17:28:16,478 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label00.c [2023-12-20 17:28:16,490 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 17:28:16,490 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 17:28:16,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 17:28:16,534 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;@1cb9167f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 17:28:16,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 17:28:16,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 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) [2023-12-20 17:28:16,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 17:28:16,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:16,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:28:16,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:16,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:16,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1866133670, now seen corresponding path program 1 times [2023-12-20 17:28:16,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:16,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923894375] [2023-12-20 17:28:16,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:16,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:16,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:28:16,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:16,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923894375] [2023-12-20 17:28:16,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923894375] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:16,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:16,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:28:16,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691791388] [2023-12-20 17:28:16,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:16,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 17:28:16,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:16,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 17:28:16,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:28:16,698 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 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 26.5) internal successors, (53), 2 states have internal predecessors, (53), 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) [2023-12-20 17:28:16,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:16,745 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-20 17:28:16,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 17:28:16,764 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 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 53 [2023-12-20 17:28:16,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:16,780 INFO L225 Difference]: With dead ends: 1055 [2023-12-20 17:28:16,780 INFO L226 Difference]: Without dead ends: 526 [2023-12-20 17:28:16,787 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 [2023-12-20 17:28:16,790 INFO L413 NwaCegarLoop]: 935 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, 935 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 [2023-12-20 17:28:16,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 17:28:16,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-20 17:28:16,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-20 17:28:16,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 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) [2023-12-20 17:28:16,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-20 17:28:16,833 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 53 [2023-12-20 17:28:16,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:16,833 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-20 17:28:16,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 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) [2023-12-20 17:28:16,834 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-20 17:28:16,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 17:28:16,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:16,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:28:16,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 17:28:16,835 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:16,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:16,836 INFO L85 PathProgramCache]: Analyzing trace with hash 184422738, now seen corresponding path program 1 times [2023-12-20 17:28:16,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:16,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015388645] [2023-12-20 17:28:16,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:16,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:16,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:28:16,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:16,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015388645] [2023-12-20 17:28:16,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015388645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:16,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:16,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:28:16,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765589492] [2023-12-20 17:28:16,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:16,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:28:16,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:16,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:28:16,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:16,963 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 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) [2023-12-20 17:28:19,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:19,278 INFO L93 Difference]: Finished difference Result 1499 states and 2693 transitions. [2023-12-20 17:28:19,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:28:19,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 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 53 [2023-12-20 17:28:19,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:19,283 INFO L225 Difference]: With dead ends: 1499 [2023-12-20 17:28:19,283 INFO L226 Difference]: Without dead ends: 974 [2023-12-20 17:28:19,284 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 [2023-12-20 17:28:19,285 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 420 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:19,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 495 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:28:19,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-12-20 17:28:19,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 971. [2023-12-20 17:28:19,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5082474226804123) internal successors, (1463), 970 states have internal predecessors, (1463), 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) [2023-12-20 17:28:19,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1463 transitions. [2023-12-20 17:28:19,313 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1463 transitions. Word has length 53 [2023-12-20 17:28:19,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:19,314 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1463 transitions. [2023-12-20 17:28:19,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 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) [2023-12-20 17:28:19,314 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1463 transitions. [2023-12-20 17:28:19,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-20 17:28:19,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:19,317 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, 2, 2, 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] [2023-12-20 17:28:19,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 17:28:19,318 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:19,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:19,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1375403422, now seen corresponding path program 1 times [2023-12-20 17:28:19,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:19,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470429035] [2023-12-20 17:28:19,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:19,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:19,687 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:28:19,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:19,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470429035] [2023-12-20 17:28:19,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470429035] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:19,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:19,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:28:19,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735978907] [2023-12-20 17:28:19,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:19,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:28:19,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:19,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:28:19,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:28:19,690 INFO L87 Difference]: Start difference. First operand 971 states and 1463 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 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) [2023-12-20 17:28:23,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:23,008 INFO L93 Difference]: Finished difference Result 3736 states and 5654 transitions. [2023-12-20 17:28:23,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:28:23,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 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 123 [2023-12-20 17:28:23,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:23,016 INFO L225 Difference]: With dead ends: 3736 [2023-12-20 17:28:23,016 INFO L226 Difference]: Without dead ends: 2766 [2023-12-20 17:28:23,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:28:23,018 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 908 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2550 mSolverCounterSat, 784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 3334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 784 IncrementalHoareTripleChecker+Valid, 2550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:23,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 268 Invalid, 3334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [784 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 17:28:23,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2023-12-20 17:28:23,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2723. [2023-12-20 17:28:23,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2723 states, 2722 states have (on average 1.3949301983835416) internal successors, (3797), 2722 states have internal predecessors, (3797), 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) [2023-12-20 17:28:23,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 3797 transitions. [2023-12-20 17:28:23,054 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 3797 transitions. Word has length 123 [2023-12-20 17:28:23,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:23,054 INFO L495 AbstractCegarLoop]: Abstraction has 2723 states and 3797 transitions. [2023-12-20 17:28:23,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 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) [2023-12-20 17:28:23,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 3797 transitions. [2023-12-20 17:28:23,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 17:28:23,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:23,057 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, 2, 2, 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] [2023-12-20 17:28:23,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 17:28:23,057 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:23,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:23,058 INFO L85 PathProgramCache]: Analyzing trace with hash 2133161281, now seen corresponding path program 1 times [2023-12-20 17:28:23,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:23,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446230960] [2023-12-20 17:28:23,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:23,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:23,161 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:28:23,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:23,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446230960] [2023-12-20 17:28:23,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446230960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:23,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:23,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:28:23,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918924483] [2023-12-20 17:28:23,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:23,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:28:23,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:23,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:28:23,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:23,163 INFO L87 Difference]: Start difference. First operand 2723 states and 3797 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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) [2023-12-20 17:28:24,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:24,767 INFO L93 Difference]: Finished difference Result 8008 states and 11160 transitions. [2023-12-20 17:28:24,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:28:24,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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 145 [2023-12-20 17:28:24,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:24,779 INFO L225 Difference]: With dead ends: 8008 [2023-12-20 17:28:24,779 INFO L226 Difference]: Without dead ends: 4427 [2023-12-20 17:28:24,783 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 [2023-12-20 17:28:24,784 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:24,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:28:24,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4427 states. [2023-12-20 17:28:24,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4427 to 4427. [2023-12-20 17:28:24,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 4426 states have (on average 1.2071848169905106) internal successors, (5343), 4426 states have internal predecessors, (5343), 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) [2023-12-20 17:28:24,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 5343 transitions. [2023-12-20 17:28:24,855 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 5343 transitions. Word has length 145 [2023-12-20 17:28:24,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:24,855 INFO L495 AbstractCegarLoop]: Abstraction has 4427 states and 5343 transitions. [2023-12-20 17:28:24,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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) [2023-12-20 17:28:24,856 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 5343 transitions. [2023-12-20 17:28:24,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-20 17:28:24,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:24,862 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:28:24,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 17:28:24,863 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:24,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:24,863 INFO L85 PathProgramCache]: Analyzing trace with hash -437070539, now seen corresponding path program 1 times [2023-12-20 17:28:24,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:24,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375628421] [2023-12-20 17:28:24,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:24,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:28:25,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:25,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375628421] [2023-12-20 17:28:25,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375628421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:25,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:25,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:28:25,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408744514] [2023-12-20 17:28:25,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:25,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:28:25,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:25,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:28:25,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:25,123 INFO L87 Difference]: Start difference. First operand 4427 states and 5343 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2023-12-20 17:28:26,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:26,890 INFO L93 Difference]: Finished difference Result 10988 states and 13619 transitions. [2023-12-20 17:28:26,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:28:26,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 205 [2023-12-20 17:28:26,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:26,912 INFO L225 Difference]: With dead ends: 10988 [2023-12-20 17:28:26,912 INFO L226 Difference]: Without dead ends: 6562 [2023-12-20 17:28:26,918 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 [2023-12-20 17:28:26,919 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:26,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 798 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:28:26,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6562 states. [2023-12-20 17:28:27,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6562 to 6562. [2023-12-20 17:28:27,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6562 states, 6561 states have (on average 1.2025605852766346) internal successors, (7890), 6561 states have internal predecessors, (7890), 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) [2023-12-20 17:28:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6562 states to 6562 states and 7890 transitions. [2023-12-20 17:28:27,027 INFO L78 Accepts]: Start accepts. Automaton has 6562 states and 7890 transitions. Word has length 205 [2023-12-20 17:28:27,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:27,028 INFO L495 AbstractCegarLoop]: Abstraction has 6562 states and 7890 transitions. [2023-12-20 17:28:27,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2023-12-20 17:28:27,029 INFO L276 IsEmpty]: Start isEmpty. Operand 6562 states and 7890 transitions. [2023-12-20 17:28:27,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-20 17:28:27,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:27,031 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:28:27,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 17:28:27,032 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:27,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:27,032 INFO L85 PathProgramCache]: Analyzing trace with hash -470195344, now seen corresponding path program 1 times [2023-12-20 17:28:27,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:27,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006735113] [2023-12-20 17:28:27,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:27,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-20 17:28:27,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:27,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006735113] [2023-12-20 17:28:27,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006735113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:27,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:27,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:28:27,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776682952] [2023-12-20 17:28:27,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:27,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:28:27,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:27,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:28:27,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:27,230 INFO L87 Difference]: Start difference. First operand 6562 states and 7890 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2023-12-20 17:28:29,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:29,031 INFO L93 Difference]: Finished difference Result 16520 states and 20209 transitions. [2023-12-20 17:28:29,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:28:29,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 207 [2023-12-20 17:28:29,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:29,057 INFO L225 Difference]: With dead ends: 16520 [2023-12-20 17:28:29,058 INFO L226 Difference]: Without dead ends: 9959 [2023-12-20 17:28:29,068 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 [2023-12-20 17:28:29,070 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 399 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:29,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 484 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:28:29,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9959 states. [2023-12-20 17:28:29,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9959 to 6960. [2023-12-20 17:28:29,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6960 states, 6959 states have (on average 1.1939933898548643) internal successors, (8309), 6959 states have internal predecessors, (8309), 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) [2023-12-20 17:28:29,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6960 states to 6960 states and 8309 transitions. [2023-12-20 17:28:29,174 INFO L78 Accepts]: Start accepts. Automaton has 6960 states and 8309 transitions. Word has length 207 [2023-12-20 17:28:29,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:29,175 INFO L495 AbstractCegarLoop]: Abstraction has 6960 states and 8309 transitions. [2023-12-20 17:28:29,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2023-12-20 17:28:29,176 INFO L276 IsEmpty]: Start isEmpty. Operand 6960 states and 8309 transitions. [2023-12-20 17:28:29,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-20 17:28:29,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:29,178 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, 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, 1, 1, 1, 1, 1, 1] [2023-12-20 17:28:29,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 17:28:29,178 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:29,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:29,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1668185292, now seen corresponding path program 1 times [2023-12-20 17:28:29,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:29,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562392074] [2023-12-20 17:28:29,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:29,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:29,317 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:28:29,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:29,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562392074] [2023-12-20 17:28:29,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562392074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:29,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:29,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:28:29,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134857470] [2023-12-20 17:28:29,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:29,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:28:29,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:29,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:28:29,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:29,319 INFO L87 Difference]: Start difference. First operand 6960 states and 8309 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2023-12-20 17:28:30,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:30,771 INFO L93 Difference]: Finished difference Result 17323 states and 21058 transitions. [2023-12-20 17:28:30,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:28:30,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 220 [2023-12-20 17:28:30,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:30,862 INFO L225 Difference]: With dead ends: 17323 [2023-12-20 17:28:30,862 INFO L226 Difference]: Without dead ends: 10364 [2023-12-20 17:28:30,867 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 [2023-12-20 17:28:30,867 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 423 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:30,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 450 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:28:30,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10364 states. [2023-12-20 17:28:30,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10364 to 9508. [2023-12-20 17:28:30,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9508 states, 9507 states have (on average 1.1959608709372043) internal successors, (11370), 9507 states have internal predecessors, (11370), 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) [2023-12-20 17:28:30,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9508 states to 9508 states and 11370 transitions. [2023-12-20 17:28:30,988 INFO L78 Accepts]: Start accepts. Automaton has 9508 states and 11370 transitions. Word has length 220 [2023-12-20 17:28:30,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:30,988 INFO L495 AbstractCegarLoop]: Abstraction has 9508 states and 11370 transitions. [2023-12-20 17:28:30,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2023-12-20 17:28:30,989 INFO L276 IsEmpty]: Start isEmpty. Operand 9508 states and 11370 transitions. [2023-12-20 17:28:30,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-20 17:28:30,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:30,991 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:28:30,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 17:28:30,991 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:30,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:30,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1774281270, now seen corresponding path program 1 times [2023-12-20 17:28:30,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:30,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868855429] [2023-12-20 17:28:30,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:30,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:28:31,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:31,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868855429] [2023-12-20 17:28:31,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868855429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:31,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:31,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:28:31,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170297911] [2023-12-20 17:28:31,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:31,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:28:31,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:31,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:28:31,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:31,100 INFO L87 Difference]: Start difference. First operand 9508 states and 11370 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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) [2023-12-20 17:28:32,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:32,946 INFO L93 Difference]: Finished difference Result 25398 states and 30226 transitions. [2023-12-20 17:28:32,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:28:32,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 252 [2023-12-20 17:28:32,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:32,970 INFO L225 Difference]: With dead ends: 25398 [2023-12-20 17:28:32,970 INFO L226 Difference]: Without dead ends: 15891 [2023-12-20 17:28:32,980 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 [2023-12-20 17:28:32,981 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 484 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:32,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 280 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:28:32,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15891 states. [2023-12-20 17:28:33,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15891 to 14183. [2023-12-20 17:28:33,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14183 states, 14182 states have (on average 1.1846001974333662) internal successors, (16800), 14182 states have internal predecessors, (16800), 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) [2023-12-20 17:28:33,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14183 states to 14183 states and 16800 transitions. [2023-12-20 17:28:33,143 INFO L78 Accepts]: Start accepts. Automaton has 14183 states and 16800 transitions. Word has length 252 [2023-12-20 17:28:33,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:33,144 INFO L495 AbstractCegarLoop]: Abstraction has 14183 states and 16800 transitions. [2023-12-20 17:28:33,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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) [2023-12-20 17:28:33,144 INFO L276 IsEmpty]: Start isEmpty. Operand 14183 states and 16800 transitions. [2023-12-20 17:28:33,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-12-20 17:28:33,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:33,147 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:28:33,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 17:28:33,147 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:33,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:33,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1927600320, now seen corresponding path program 1 times [2023-12-20 17:28:33,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:33,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307424977] [2023-12-20 17:28:33,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:33,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:33,448 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:28:33,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:33,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307424977] [2023-12-20 17:28:33,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307424977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:33,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:33,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:28:33,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974762721] [2023-12-20 17:28:33,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:33,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:28:33,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:33,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:28:33,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:33,450 INFO L87 Difference]: Start difference. First operand 14183 states and 16800 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2023-12-20 17:28:35,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:35,374 INFO L93 Difference]: Finished difference Result 33920 states and 40605 transitions. [2023-12-20 17:28:35,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:28:35,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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 269 [2023-12-20 17:28:35,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:35,403 INFO L225 Difference]: With dead ends: 33920 [2023-12-20 17:28:35,404 INFO L226 Difference]: Without dead ends: 19738 [2023-12-20 17:28:35,420 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 [2023-12-20 17:28:35,422 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 454 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:35,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 452 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 17:28:35,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19738 states. [2023-12-20 17:28:35,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19738 to 18028. [2023-12-20 17:28:35,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18028 states, 18027 states have (on average 1.2058578798468964) internal successors, (21738), 18027 states have internal predecessors, (21738), 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) [2023-12-20 17:28:35,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18028 states to 18028 states and 21738 transitions. [2023-12-20 17:28:35,611 INFO L78 Accepts]: Start accepts. Automaton has 18028 states and 21738 transitions. Word has length 269 [2023-12-20 17:28:35,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:35,612 INFO L495 AbstractCegarLoop]: Abstraction has 18028 states and 21738 transitions. [2023-12-20 17:28:35,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2023-12-20 17:28:35,612 INFO L276 IsEmpty]: Start isEmpty. Operand 18028 states and 21738 transitions. [2023-12-20 17:28:35,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-20 17:28:35,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:35,616 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:28:35,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 17:28:35,616 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:35,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:35,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1992306372, now seen corresponding path program 1 times [2023-12-20 17:28:35,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:35,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426001641] [2023-12-20 17:28:35,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:35,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:35,948 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 242 proven. 70 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-20 17:28:35,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:35,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426001641] [2023-12-20 17:28:35,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426001641] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:28:35,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382609810] [2023-12-20 17:28:35,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:35,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:28:35,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:28:35,951 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) [2023-12-20 17:28:35,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 17:28:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:36,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:28:36,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:28:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 242 proven. 70 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-20 17:28:36,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:28:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-20 17:28:36,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382609810] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:28:36,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:28:36,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-20 17:28:36,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332668478] [2023-12-20 17:28:36,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:36,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:28:36,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:36,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:28:36,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:28:36,621 INFO L87 Difference]: Start difference. First operand 18028 states and 21738 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 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) [2023-12-20 17:28:39,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:39,979 INFO L93 Difference]: Finished difference Result 49691 states and 60241 transitions. [2023-12-20 17:28:39,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:28:39,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 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 277 [2023-12-20 17:28:39,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:40,017 INFO L225 Difference]: With dead ends: 49691 [2023-12-20 17:28:40,017 INFO L226 Difference]: Without dead ends: 30793 [2023-12-20 17:28:40,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:28:40,033 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 1069 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 1223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 3489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1223 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:40,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 137 Invalid, 3489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1223 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 17:28:40,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30793 states. [2023-12-20 17:28:40,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30793 to 30366. [2023-12-20 17:28:40,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30366 states, 30365 states have (on average 1.1689445084801582) internal successors, (35495), 30365 states have internal predecessors, (35495), 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) [2023-12-20 17:28:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30366 states to 30366 states and 35495 transitions. [2023-12-20 17:28:40,355 INFO L78 Accepts]: Start accepts. Automaton has 30366 states and 35495 transitions. Word has length 277 [2023-12-20 17:28:40,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:40,355 INFO L495 AbstractCegarLoop]: Abstraction has 30366 states and 35495 transitions. [2023-12-20 17:28:40,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 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) [2023-12-20 17:28:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 30366 states and 35495 transitions. [2023-12-20 17:28:40,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-12-20 17:28:40,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:40,359 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:28:40,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 17:28:40,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-20 17:28:40,565 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:40,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:40,566 INFO L85 PathProgramCache]: Analyzing trace with hash -547710925, now seen corresponding path program 1 times [2023-12-20 17:28:40,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:40,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764429196] [2023-12-20 17:28:40,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:40,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:40,809 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-20 17:28:40,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:40,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764429196] [2023-12-20 17:28:40,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764429196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:40,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:40,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:28:40,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136510234] [2023-12-20 17:28:40,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:40,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:28:40,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:40,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:28:40,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:40,811 INFO L87 Difference]: Start difference. First operand 30366 states and 35495 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2023-12-20 17:28:42,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:42,862 INFO L93 Difference]: Finished difference Result 76488 states and 89022 transitions. [2023-12-20 17:28:42,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:28:42,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 285 [2023-12-20 17:28:42,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:42,916 INFO L225 Difference]: With dead ends: 76488 [2023-12-20 17:28:42,916 INFO L226 Difference]: Without dead ends: 44415 [2023-12-20 17:28:42,937 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 [2023-12-20 17:28:42,939 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 482 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:42,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 608 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:28:42,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44415 states. [2023-12-20 17:28:43,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44415 to 39724. [2023-12-20 17:28:43,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39724 states, 39723 states have (on average 1.144299272461798) internal successors, (45455), 39723 states have internal predecessors, (45455), 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) [2023-12-20 17:28:43,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39724 states to 39724 states and 45455 transitions. [2023-12-20 17:28:43,376 INFO L78 Accepts]: Start accepts. Automaton has 39724 states and 45455 transitions. Word has length 285 [2023-12-20 17:28:43,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:43,385 INFO L495 AbstractCegarLoop]: Abstraction has 39724 states and 45455 transitions. [2023-12-20 17:28:43,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2023-12-20 17:28:43,394 INFO L276 IsEmpty]: Start isEmpty. Operand 39724 states and 45455 transitions. [2023-12-20 17:28:43,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-20 17:28:43,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:43,397 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:28:43,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 17:28:43,404 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:43,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:43,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1307338848, now seen corresponding path program 1 times [2023-12-20 17:28:43,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:43,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384028455] [2023-12-20 17:28:43,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:43,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:43,534 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-20 17:28:43,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:43,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384028455] [2023-12-20 17:28:43,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384028455] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:43,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:43,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:28:43,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244448357] [2023-12-20 17:28:43,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:43,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:28:43,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:43,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:28:43,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:43,563 INFO L87 Difference]: Start difference. First operand 39724 states and 45455 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2023-12-20 17:28:45,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:45,458 INFO L93 Difference]: Finished difference Result 84967 states and 97498 transitions. [2023-12-20 17:28:45,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:28:45,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 290 [2023-12-20 17:28:45,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:45,506 INFO L225 Difference]: With dead ends: 84967 [2023-12-20 17:28:45,506 INFO L226 Difference]: Without dead ends: 45244 [2023-12-20 17:28:45,516 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 [2023-12-20 17:28:45,517 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 372 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:45,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 823 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:28:45,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45244 states. [2023-12-20 17:28:45,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45244 to 44819. [2023-12-20 17:28:45,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44819 states, 44818 states have (on average 1.1323129099915212) internal successors, (50748), 44818 states have internal predecessors, (50748), 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) [2023-12-20 17:28:46,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44819 states to 44819 states and 50748 transitions. [2023-12-20 17:28:46,058 INFO L78 Accepts]: Start accepts. Automaton has 44819 states and 50748 transitions. Word has length 290 [2023-12-20 17:28:46,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:46,058 INFO L495 AbstractCegarLoop]: Abstraction has 44819 states and 50748 transitions. [2023-12-20 17:28:46,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2023-12-20 17:28:46,058 INFO L276 IsEmpty]: Start isEmpty. Operand 44819 states and 50748 transitions. [2023-12-20 17:28:46,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-12-20 17:28:46,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:46,063 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:28:46,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 17:28:46,063 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:46,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:46,064 INFO L85 PathProgramCache]: Analyzing trace with hash -891598437, now seen corresponding path program 1 times [2023-12-20 17:28:46,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:46,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955788214] [2023-12-20 17:28:46,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:46,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:28:46,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:46,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955788214] [2023-12-20 17:28:46,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955788214] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:46,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:46,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:28:46,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098486801] [2023-12-20 17:28:46,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:46,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:28:46,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:46,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:28:46,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:28:46,428 INFO L87 Difference]: Start difference. First operand 44819 states and 50748 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2023-12-20 17:28:49,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:49,248 INFO L93 Difference]: Finished difference Result 117358 states and 132889 transitions. [2023-12-20 17:28:49,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:28:49,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 313 [2023-12-20 17:28:49,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:49,425 INFO L225 Difference]: With dead ends: 117358 [2023-12-20 17:28:49,425 INFO L226 Difference]: Without dead ends: 70839 [2023-12-20 17:28:49,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:28:49,466 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 843 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2693 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 3097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:49,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 321 Invalid, 3097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 2693 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 17:28:49,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70839 states. [2023-12-20 17:28:50,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70839 to 69510. [2023-12-20 17:28:50,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69510 states, 69509 states have (on average 1.1229912673179012) internal successors, (78058), 69509 states have internal predecessors, (78058), 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) [2023-12-20 17:28:50,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69510 states to 69510 states and 78058 transitions. [2023-12-20 17:28:50,187 INFO L78 Accepts]: Start accepts. Automaton has 69510 states and 78058 transitions. Word has length 313 [2023-12-20 17:28:50,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:50,188 INFO L495 AbstractCegarLoop]: Abstraction has 69510 states and 78058 transitions. [2023-12-20 17:28:50,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2023-12-20 17:28:50,188 INFO L276 IsEmpty]: Start isEmpty. Operand 69510 states and 78058 transitions. [2023-12-20 17:28:50,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-20 17:28:50,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:50,193 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:28:50,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 17:28:50,193 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:50,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:50,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1171549942, now seen corresponding path program 1 times [2023-12-20 17:28:50,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:50,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740010270] [2023-12-20 17:28:50,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:50,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:50,540 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-20 17:28:50,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:50,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740010270] [2023-12-20 17:28:50,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740010270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:50,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:50,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:28:50,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218766233] [2023-12-20 17:28:50,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:50,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:28:50,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:50,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:28:50,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:50,542 INFO L87 Difference]: Start difference. First operand 69510 states and 78058 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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) [2023-12-20 17:28:52,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:52,228 INFO L93 Difference]: Finished difference Result 149690 states and 168125 transitions. [2023-12-20 17:28:52,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:28:52,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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 328 [2023-12-20 17:28:52,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:52,323 INFO L225 Difference]: With dead ends: 149690 [2023-12-20 17:28:52,323 INFO L226 Difference]: Without dead ends: 80181 [2023-12-20 17:28:52,359 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 [2023-12-20 17:28:52,369 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 365 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:52,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 766 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 17:28:52,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80181 states. [2023-12-20 17:28:53,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80181 to 79318. [2023-12-20 17:28:53,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79318 states, 79317 states have (on average 1.1088795592369858) internal successors, (87953), 79317 states have internal predecessors, (87953), 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) [2023-12-20 17:28:53,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79318 states to 79318 states and 87953 transitions. [2023-12-20 17:28:53,502 INFO L78 Accepts]: Start accepts. Automaton has 79318 states and 87953 transitions. Word has length 328 [2023-12-20 17:28:53,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:53,502 INFO L495 AbstractCegarLoop]: Abstraction has 79318 states and 87953 transitions. [2023-12-20 17:28:53,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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) [2023-12-20 17:28:53,503 INFO L276 IsEmpty]: Start isEmpty. Operand 79318 states and 87953 transitions. [2023-12-20 17:28:53,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-12-20 17:28:53,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:53,525 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, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:28:53,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 17:28:53,525 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:53,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:53,529 INFO L85 PathProgramCache]: Analyzing trace with hash -732796761, now seen corresponding path program 1 times [2023-12-20 17:28:53,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:53,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518842058] [2023-12-20 17:28:53,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:53,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:28:54,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:54,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518842058] [2023-12-20 17:28:54,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518842058] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:28:54,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98261476] [2023-12-20 17:28:54,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:54,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:28:54,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:28:54,007 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) [2023-12-20 17:28:54,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 17:28:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:54,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 17:28:54,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:28:54,422 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:28:54,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:28:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:28:55,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98261476] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 17:28:55,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 17:28:55,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-20 17:28:55,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7606269] [2023-12-20 17:28:55,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 17:28:55,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 17:28:55,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:55,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 17:28:55,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:28:55,936 INFO L87 Difference]: Start difference. First operand 79318 states and 87953 transitions. Second operand has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 6 states have internal predecessors, (731), 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) [2023-12-20 17:29:02,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:02,834 INFO L93 Difference]: Finished difference Result 195339 states and 215637 transitions. [2023-12-20 17:29:02,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 17:29:02,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 6 states have internal predecessors, (731), 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 339 [2023-12-20 17:29:02,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:03,085 INFO L225 Difference]: With dead ends: 195339 [2023-12-20 17:29:03,085 INFO L226 Difference]: Without dead ends: 113464 [2023-12-20 17:29:03,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:29:03,198 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 1845 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 7475 mSolverCounterSat, 927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 8402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 7475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:03,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1845 Valid, 278 Invalid, 8402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [927 Valid, 7475 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-20 17:29:03,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113464 states. [2023-12-20 17:29:04,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113464 to 97182. [2023-12-20 17:29:04,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97182 states, 97181 states have (on average 1.0952861155987281) internal successors, (106441), 97181 states have internal predecessors, (106441), 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) [2023-12-20 17:29:04,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97182 states to 97182 states and 106441 transitions. [2023-12-20 17:29:04,823 INFO L78 Accepts]: Start accepts. Automaton has 97182 states and 106441 transitions. Word has length 339 [2023-12-20 17:29:04,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:04,836 INFO L495 AbstractCegarLoop]: Abstraction has 97182 states and 106441 transitions. [2023-12-20 17:29:04,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 6 states have internal predecessors, (731), 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) [2023-12-20 17:29:04,836 INFO L276 IsEmpty]: Start isEmpty. Operand 97182 states and 106441 transitions. [2023-12-20 17:29:04,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2023-12-20 17:29:04,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:04,859 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:29:04,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 17:29:05,059 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,SelfDestructingSolverStorable14 [2023-12-20 17:29:05,059 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:05,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:05,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1205068660, now seen corresponding path program 1 times [2023-12-20 17:29:05,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:05,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617114930] [2023-12-20 17:29:05,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:05,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:05,498 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 418 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-20 17:29:05,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:05,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617114930] [2023-12-20 17:29:05,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617114930] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:05,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:05,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:29:05,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016986390] [2023-12-20 17:29:05,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:05,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:05,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:05,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:05,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:05,500 INFO L87 Difference]: Start difference. First operand 97182 states and 106441 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2023-12-20 17:29:07,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:07,283 INFO L93 Difference]: Finished difference Result 199050 states and 218122 transitions. [2023-12-20 17:29:07,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:07,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 381 [2023-12-20 17:29:07,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:07,434 INFO L225 Difference]: With dead ends: 199050 [2023-12-20 17:29:07,434 INFO L226 Difference]: Without dead ends: 102294 [2023-12-20 17:29:07,487 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 [2023-12-20 17:29:07,490 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 405 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:07,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 726 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 17:29:07,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102294 states. [2023-12-20 17:29:08,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102294 to 89927. [2023-12-20 17:29:08,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89927 states, 89926 states have (on average 1.0939661499455107) internal successors, (98376), 89926 states have internal predecessors, (98376), 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) [2023-12-20 17:29:08,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89927 states to 89927 states and 98376 transitions. [2023-12-20 17:29:08,937 INFO L78 Accepts]: Start accepts. Automaton has 89927 states and 98376 transitions. Word has length 381 [2023-12-20 17:29:08,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:08,937 INFO L495 AbstractCegarLoop]: Abstraction has 89927 states and 98376 transitions. [2023-12-20 17:29:08,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2023-12-20 17:29:08,937 INFO L276 IsEmpty]: Start isEmpty. Operand 89927 states and 98376 transitions. [2023-12-20 17:29:08,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2023-12-20 17:29:08,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:08,958 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, 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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 17:29:08,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 17:29:08,958 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:08,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:08,958 INFO L85 PathProgramCache]: Analyzing trace with hash -366180776, now seen corresponding path program 1 times [2023-12-20 17:29:08,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:08,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34799316] [2023-12-20 17:29:08,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:08,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:09,180 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2023-12-20 17:29:09,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:09,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34799316] [2023-12-20 17:29:09,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34799316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:09,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:09,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:29:09,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58439303] [2023-12-20 17:29:09,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:09,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:09,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:09,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:09,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:09,183 INFO L87 Difference]: Start difference. First operand 89927 states and 98376 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 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) [2023-12-20 17:29:10,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:10,565 INFO L93 Difference]: Finished difference Result 177715 states and 194413 transitions. [2023-12-20 17:29:10,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:10,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 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 432 [2023-12-20 17:29:10,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:10,821 INFO L225 Difference]: With dead ends: 177715 [2023-12-20 17:29:10,821 INFO L226 Difference]: Without dead ends: 88213 [2023-12-20 17:29:10,858 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 [2023-12-20 17:29:10,859 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 616 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:10,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 93 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 17:29:10,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88213 states. [2023-12-20 17:29:11,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88213 to 88204. [2023-12-20 17:29:11,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88204 states, 88203 states have (on average 1.0933301588381348) internal successors, (96435), 88203 states have internal predecessors, (96435), 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) [2023-12-20 17:29:12,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88204 states to 88204 states and 96435 transitions. [2023-12-20 17:29:12,023 INFO L78 Accepts]: Start accepts. Automaton has 88204 states and 96435 transitions. Word has length 432 [2023-12-20 17:29:12,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:12,023 INFO L495 AbstractCegarLoop]: Abstraction has 88204 states and 96435 transitions. [2023-12-20 17:29:12,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 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) [2023-12-20 17:29:12,024 INFO L276 IsEmpty]: Start isEmpty. Operand 88204 states and 96435 transitions. [2023-12-20 17:29:12,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-12-20 17:29:12,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:12,033 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, 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, 4, 4, 4, 4, 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] [2023-12-20 17:29:12,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 17:29:12,033 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:12,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:12,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1053438296, now seen corresponding path program 1 times [2023-12-20 17:29:12,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:12,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349426422] [2023-12-20 17:29:12,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:12,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 370 proven. 52 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-20 17:29:12,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:12,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349426422] [2023-12-20 17:29:12,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349426422] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:29:12,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18920865] [2023-12-20 17:29:12,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:12,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:29:12,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:29:12,968 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) [2023-12-20 17:29:13,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 17:29:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:13,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-20 17:29:13,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:29:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 433 proven. 82 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-12-20 17:29:13,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:29:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 433 proven. 82 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-12-20 17:29:14,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18920865] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 17:29:14,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 17:29:14,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2023-12-20 17:29:14,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570993939] [2023-12-20 17:29:14,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 17:29:14,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 17:29:14,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:14,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 17:29:14,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:29:14,188 INFO L87 Difference]: Start difference. First operand 88204 states and 96435 transitions. Second operand has 9 states, 9 states have (on average 82.88888888888889) internal successors, (746), 9 states have internal predecessors, (746), 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) [2023-12-20 17:29:26,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:26,337 INFO L93 Difference]: Finished difference Result 220725 states and 240666 transitions. [2023-12-20 17:29:26,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-20 17:29:26,338 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 82.88888888888889) internal successors, (746), 9 states have internal predecessors, (746), 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 433 [2023-12-20 17:29:26,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:26,502 INFO L225 Difference]: With dead ends: 220725 [2023-12-20 17:29:26,503 INFO L226 Difference]: Without dead ends: 131245 [2023-12-20 17:29:26,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2023-12-20 17:29:26,560 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 8942 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 14773 mSolverCounterSat, 2380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8942 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 17153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2380 IncrementalHoareTripleChecker+Valid, 14773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:26,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8942 Valid, 438 Invalid, 17153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2380 Valid, 14773 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2023-12-20 17:29:26,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131245 states. [2023-12-20 17:29:28,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131245 to 106493. [2023-12-20 17:29:28,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106493 states, 106492 states have (on average 1.08518010742591) internal successors, (115563), 106492 states have internal predecessors, (115563), 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) [2023-12-20 17:29:28,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106493 states to 106493 states and 115563 transitions. [2023-12-20 17:29:28,304 INFO L78 Accepts]: Start accepts. Automaton has 106493 states and 115563 transitions. Word has length 433 [2023-12-20 17:29:28,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:28,305 INFO L495 AbstractCegarLoop]: Abstraction has 106493 states and 115563 transitions. [2023-12-20 17:29:28,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 82.88888888888889) internal successors, (746), 9 states have internal predecessors, (746), 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) [2023-12-20 17:29:28,305 INFO L276 IsEmpty]: Start isEmpty. Operand 106493 states and 115563 transitions. [2023-12-20 17:29:28,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-12-20 17:29:28,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:28,315 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:29:28,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 17:29:28,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 17:29:28,521 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:28,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:28,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2108734583, now seen corresponding path program 1 times [2023-12-20 17:29:28,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:28,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675375889] [2023-12-20 17:29:28,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:28,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:29:29,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:29,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675375889] [2023-12-20 17:29:29,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675375889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:29,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:29,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:29:29,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558399792] [2023-12-20 17:29:29,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:29,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:29,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:29,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:29,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:29,038 INFO L87 Difference]: Start difference. First operand 106493 states and 115563 transitions. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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) [2023-12-20 17:29:31,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:31,234 INFO L93 Difference]: Finished difference Result 208728 states and 226572 transitions. [2023-12-20 17:29:31,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:31,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 522 [2023-12-20 17:29:31,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:31,368 INFO L225 Difference]: With dead ends: 208728 [2023-12-20 17:29:31,368 INFO L226 Difference]: Without dead ends: 103086 [2023-12-20 17:29:31,425 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 [2023-12-20 17:29:31,426 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 404 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:31,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 660 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:29:31,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103086 states. [2023-12-20 17:29:32,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103086 to 102230. [2023-12-20 17:29:32,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102230 states, 102229 states have (on average 1.0784611020356258) internal successors, (110250), 102229 states have internal predecessors, (110250), 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) [2023-12-20 17:29:32,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102230 states to 102230 states and 110250 transitions. [2023-12-20 17:29:32,830 INFO L78 Accepts]: Start accepts. Automaton has 102230 states and 110250 transitions. Word has length 522 [2023-12-20 17:29:32,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:32,831 INFO L495 AbstractCegarLoop]: Abstraction has 102230 states and 110250 transitions. [2023-12-20 17:29:32,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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) [2023-12-20 17:29:32,831 INFO L276 IsEmpty]: Start isEmpty. Operand 102230 states and 110250 transitions. [2023-12-20 17:29:32,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2023-12-20 17:29:32,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:32,842 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:29:32,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 17:29:32,842 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:32,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:32,843 INFO L85 PathProgramCache]: Analyzing trace with hash 486092691, now seen corresponding path program 1 times [2023-12-20 17:29:32,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:32,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827967162] [2023-12-20 17:29:32,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:32,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:33,285 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:29:33,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:33,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827967162] [2023-12-20 17:29:33,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827967162] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:33,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:33,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:29:33,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450103694] [2023-12-20 17:29:33,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:33,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:33,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:33,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:33,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:33,288 INFO L87 Difference]: Start difference. First operand 102230 states and 110250 transitions. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2023-12-20 17:29:35,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:35,425 INFO L93 Difference]: Finished difference Result 208734 states and 225181 transitions. [2023-12-20 17:29:35,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:35,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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 549 [2023-12-20 17:29:35,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:35,617 INFO L225 Difference]: With dead ends: 208734 [2023-12-20 17:29:35,617 INFO L226 Difference]: Without dead ends: 106930 [2023-12-20 17:29:35,709 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 [2023-12-20 17:29:35,709 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 398 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:35,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 220 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:29:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106930 states. [2023-12-20 17:29:36,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106930 to 97124. [2023-12-20 17:29:36,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97124 states, 97123 states have (on average 1.0780350689332083) internal successors, (104702), 97123 states have internal predecessors, (104702), 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) [2023-12-20 17:29:37,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97124 states to 97124 states and 104702 transitions. [2023-12-20 17:29:37,069 INFO L78 Accepts]: Start accepts. Automaton has 97124 states and 104702 transitions. Word has length 549 [2023-12-20 17:29:37,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:37,069 INFO L495 AbstractCegarLoop]: Abstraction has 97124 states and 104702 transitions. [2023-12-20 17:29:37,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2023-12-20 17:29:37,070 INFO L276 IsEmpty]: Start isEmpty. Operand 97124 states and 104702 transitions. [2023-12-20 17:29:37,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2023-12-20 17:29:37,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:37,083 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, 6, 6, 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, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:29:37,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 17:29:37,084 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:37,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:37,084 INFO L85 PathProgramCache]: Analyzing trace with hash 649383766, now seen corresponding path program 1 times [2023-12-20 17:29:37,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:37,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943705537] [2023-12-20 17:29:37,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:37,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 827 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-20 17:29:37,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:37,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943705537] [2023-12-20 17:29:37,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943705537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:37,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:37,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:29:37,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505811287] [2023-12-20 17:29:37,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:37,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:29:37,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:37,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:29:37,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:29:37,631 INFO L87 Difference]: Start difference. First operand 97124 states and 104702 transitions. Second operand has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 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) [2023-12-20 17:29:40,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:40,302 INFO L93 Difference]: Finished difference Result 218098 states and 235251 transitions. [2023-12-20 17:29:40,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:29:40,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 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 593 [2023-12-20 17:29:40,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:40,446 INFO L225 Difference]: With dead ends: 218098 [2023-12-20 17:29:40,446 INFO L226 Difference]: Without dead ends: 121825 [2023-12-20 17:29:40,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:29:40,500 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 743 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 2284 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:40,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 164 Invalid, 2735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2284 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 17:29:40,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121825 states. [2023-12-20 17:29:42,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121825 to 116717. [2023-12-20 17:29:42,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116717 states, 116716 states have (on average 1.074274306864526) internal successors, (125385), 116716 states have internal predecessors, (125385), 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) [2023-12-20 17:29:42,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116717 states to 116717 states and 125385 transitions. [2023-12-20 17:29:42,320 INFO L78 Accepts]: Start accepts. Automaton has 116717 states and 125385 transitions. Word has length 593 [2023-12-20 17:29:42,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:42,321 INFO L495 AbstractCegarLoop]: Abstraction has 116717 states and 125385 transitions. [2023-12-20 17:29:42,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 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) [2023-12-20 17:29:42,321 INFO L276 IsEmpty]: Start isEmpty. Operand 116717 states and 125385 transitions. [2023-12-20 17:29:42,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-12-20 17:29:42,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:42,360 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:29:42,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 17:29:42,360 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:42,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:42,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1558855070, now seen corresponding path program 1 times [2023-12-20 17:29:42,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:42,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634894152] [2023-12-20 17:29:42,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:42,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:42,950 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 465 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-20 17:29:42,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:42,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634894152] [2023-12-20 17:29:42,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634894152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:42,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:42,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:29:42,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562740849] [2023-12-20 17:29:42,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:42,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:42,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:42,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:42,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:42,952 INFO L87 Difference]: Start difference. First operand 116717 states and 125385 transitions. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2023-12-20 17:29:44,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:44,664 INFO L93 Difference]: Finished difference Result 235977 states and 253226 transitions. [2023-12-20 17:29:44,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:44,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 605 [2023-12-20 17:29:44,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:44,815 INFO L225 Difference]: With dead ends: 235977 [2023-12-20 17:29:44,816 INFO L226 Difference]: Without dead ends: 120111 [2023-12-20 17:29:44,868 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 [2023-12-20 17:29:44,868 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 495 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:44,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 616 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 17:29:44,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120111 states. [2023-12-20 17:29:46,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120111 to 117982. [2023-12-20 17:29:46,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117982 states, 117981 states have (on average 1.0671972605758555) internal successors, (125909), 117981 states have internal predecessors, (125909), 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) [2023-12-20 17:29:46,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117982 states to 117982 states and 125909 transitions. [2023-12-20 17:29:46,537 INFO L78 Accepts]: Start accepts. Automaton has 117982 states and 125909 transitions. Word has length 605 [2023-12-20 17:29:46,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:46,537 INFO L495 AbstractCegarLoop]: Abstraction has 117982 states and 125909 transitions. [2023-12-20 17:29:46,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2023-12-20 17:29:46,538 INFO L276 IsEmpty]: Start isEmpty. Operand 117982 states and 125909 transitions. [2023-12-20 17:29:46,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-12-20 17:29:46,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:46,550 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:29:46,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 17:29:46,550 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:46,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:46,551 INFO L85 PathProgramCache]: Analyzing trace with hash -921692160, now seen corresponding path program 1 times [2023-12-20 17:29:46,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:46,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290629917] [2023-12-20 17:29:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:46,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:47,068 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 651 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-12-20 17:29:47,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:47,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290629917] [2023-12-20 17:29:47,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290629917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:47,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:47,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:29:47,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425445707] [2023-12-20 17:29:47,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:47,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:47,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:47,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:47,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:47,070 INFO L87 Difference]: Start difference. First operand 117982 states and 125909 transitions. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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) [2023-12-20 17:29:49,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:49,053 INFO L93 Difference]: Finished difference Result 241925 states and 258220 transitions. [2023-12-20 17:29:49,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:49,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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 605 [2023-12-20 17:29:49,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:49,390 INFO L225 Difference]: With dead ends: 241925 [2023-12-20 17:29:49,390 INFO L226 Difference]: Without dead ends: 124369 [2023-12-20 17:29:49,440 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 [2023-12-20 17:29:49,441 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 292 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:49,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 270 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:29:49,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124369 states. [2023-12-20 17:29:50,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124369 to 110323. [2023-12-20 17:29:50,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110323 states, 110322 states have (on average 1.0659977157774514) internal successors, (117603), 110322 states have internal predecessors, (117603), 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) [2023-12-20 17:29:50,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110323 states to 110323 states and 117603 transitions. [2023-12-20 17:29:50,949 INFO L78 Accepts]: Start accepts. Automaton has 110323 states and 117603 transitions. Word has length 605 [2023-12-20 17:29:50,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:50,950 INFO L495 AbstractCegarLoop]: Abstraction has 110323 states and 117603 transitions. [2023-12-20 17:29:50,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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) [2023-12-20 17:29:50,950 INFO L276 IsEmpty]: Start isEmpty. Operand 110323 states and 117603 transitions. [2023-12-20 17:29:50,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2023-12-20 17:29:50,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:50,960 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, 6, 6, 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, 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, 2, 2, 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] [2023-12-20 17:29:50,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 17:29:50,960 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:50,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:50,961 INFO L85 PathProgramCache]: Analyzing trace with hash 936881062, now seen corresponding path program 1 times [2023-12-20 17:29:50,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:50,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044898187] [2023-12-20 17:29:50,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:50,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 613 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2023-12-20 17:29:51,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:51,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044898187] [2023-12-20 17:29:51,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044898187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:51,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:51,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:29:51,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924886366] [2023-12-20 17:29:51,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:51,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:29:51,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:51,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:29:51,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:29:51,756 INFO L87 Difference]: Start difference. First operand 110323 states and 117603 transitions. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 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) [2023-12-20 17:29:55,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:55,133 INFO L93 Difference]: Finished difference Result 239822 states and 255054 transitions. [2023-12-20 17:29:55,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:29:55,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 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 620 [2023-12-20 17:29:55,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:55,519 INFO L225 Difference]: With dead ends: 239822 [2023-12-20 17:29:55,519 INFO L226 Difference]: Without dead ends: 129075 [2023-12-20 17:29:55,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:29:55,599 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 776 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 2443 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 2443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:55,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 176 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 2443 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 17:29:55,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129075 states. [2023-12-20 17:29:56,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129075 to 114154. [2023-12-20 17:29:56,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114154 states, 114153 states have (on average 1.064921640254746) internal successors, (121564), 114153 states have internal predecessors, (121564), 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) [2023-12-20 17:29:57,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114154 states to 114154 states and 121564 transitions. [2023-12-20 17:29:57,033 INFO L78 Accepts]: Start accepts. Automaton has 114154 states and 121564 transitions. Word has length 620 [2023-12-20 17:29:57,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:57,033 INFO L495 AbstractCegarLoop]: Abstraction has 114154 states and 121564 transitions. [2023-12-20 17:29:57,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 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) [2023-12-20 17:29:57,033 INFO L276 IsEmpty]: Start isEmpty. Operand 114154 states and 121564 transitions. [2023-12-20 17:29:57,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2023-12-20 17:29:57,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:57,046 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, 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, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:29:57,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 17:29:57,047 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:57,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:57,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1612774919, now seen corresponding path program 1 times [2023-12-20 17:29:57,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:57,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549699753] [2023-12-20 17:29:57,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:57,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:57,496 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2023-12-20 17:29:57,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:57,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549699753] [2023-12-20 17:29:57,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549699753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:57,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:57,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:29:57,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173152935] [2023-12-20 17:29:57,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:57,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:57,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:57,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:57,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:57,498 INFO L87 Difference]: Start difference. First operand 114154 states and 121564 transitions. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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) [2023-12-20 17:29:59,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:59,225 INFO L93 Difference]: Finished difference Result 224476 states and 239016 transitions. [2023-12-20 17:29:59,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:59,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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 651 [2023-12-20 17:29:59,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:59,374 INFO L225 Difference]: With dead ends: 224476 [2023-12-20 17:29:59,374 INFO L226 Difference]: Without dead ends: 110748 [2023-12-20 17:29:59,436 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 [2023-12-20 17:29:59,437 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 411 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:59,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 672 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 17:29:59,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110748 states. [2023-12-20 17:30:00,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110748 to 103086. [2023-12-20 17:30:00,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103086 states, 103085 states have (on average 1.060697482659941) internal successors, (109342), 103085 states have internal predecessors, (109342), 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) [2023-12-20 17:30:01,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103086 states to 103086 states and 109342 transitions. [2023-12-20 17:30:01,076 INFO L78 Accepts]: Start accepts. Automaton has 103086 states and 109342 transitions. Word has length 651 [2023-12-20 17:30:01,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:01,076 INFO L495 AbstractCegarLoop]: Abstraction has 103086 states and 109342 transitions. [2023-12-20 17:30:01,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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) [2023-12-20 17:30:01,076 INFO L276 IsEmpty]: Start isEmpty. Operand 103086 states and 109342 transitions. [2023-12-20 17:30:01,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-12-20 17:30:01,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:01,091 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, 6, 6, 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, 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, 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] [2023-12-20 17:30:01,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 17:30:01,091 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:01,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:01,091 INFO L85 PathProgramCache]: Analyzing trace with hash -984408284, now seen corresponding path program 1 times [2023-12-20 17:30:01,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:01,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541999441] [2023-12-20 17:30:01,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:01,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1222 backedges. 917 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-12-20 17:30:01,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:01,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541999441] [2023-12-20 17:30:01,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541999441] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:01,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:01,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 17:30:01,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829192508] [2023-12-20 17:30:01,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:01,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 17:30:01,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:01,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 17:30:01,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:30:01,601 INFO L87 Difference]: Start difference. First operand 103086 states and 109342 transitions. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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) [2023-12-20 17:30:04,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:04,822 INFO L93 Difference]: Finished difference Result 226182 states and 240165 transitions. [2023-12-20 17:30:04,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 17:30:04,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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 685 [2023-12-20 17:30:04,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:04,978 INFO L225 Difference]: With dead ends: 226182 [2023-12-20 17:30:04,979 INFO L226 Difference]: Without dead ends: 123522 [2023-12-20 17:30:05,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:30:05,166 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 1580 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 2609 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 3256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 2609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:05,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 141 Invalid, 3256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2609 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:30:05,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123522 states. [2023-12-20 17:30:06,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123522 to 100946. [2023-12-20 17:30:06,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100946 states, 100945 states have (on average 1.0526326217247015) internal successors, (106258), 100945 states have internal predecessors, (106258), 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) [2023-12-20 17:30:06,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100946 states to 100946 states and 106258 transitions. [2023-12-20 17:30:06,599 INFO L78 Accepts]: Start accepts. Automaton has 100946 states and 106258 transitions. Word has length 685 [2023-12-20 17:30:06,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:06,600 INFO L495 AbstractCegarLoop]: Abstraction has 100946 states and 106258 transitions. [2023-12-20 17:30:06,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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) [2023-12-20 17:30:06,600 INFO L276 IsEmpty]: Start isEmpty. Operand 100946 states and 106258 transitions. [2023-12-20 17:30:06,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-12-20 17:30:06,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:06,615 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, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:30:06,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 17:30:06,615 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:06,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:06,615 INFO L85 PathProgramCache]: Analyzing trace with hash 274370320, now seen corresponding path program 1 times [2023-12-20 17:30:06,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:06,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530265247] [2023-12-20 17:30:06,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:06,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 832 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2023-12-20 17:30:07,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:07,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530265247] [2023-12-20 17:30:07,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530265247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:07,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:07,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:30:07,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561095930] [2023-12-20 17:30:07,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:07,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:30:07,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:07,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:30:07,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:30:07,079 INFO L87 Difference]: Start difference. First operand 100946 states and 106258 transitions. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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) [2023-12-20 17:30:09,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:09,007 INFO L93 Difference]: Finished difference Result 210844 states and 221860 transitions. [2023-12-20 17:30:09,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:30:09,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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 705 [2023-12-20 17:30:09,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:09,152 INFO L225 Difference]: With dead ends: 210844 [2023-12-20 17:30:09,152 INFO L226 Difference]: Without dead ends: 109897 [2023-12-20 17:30:09,207 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 [2023-12-20 17:30:09,208 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 170 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:09,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 669 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:30:09,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109897 states. [2023-12-20 17:30:10,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109897 to 109027. [2023-12-20 17:30:10,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109027 states, 109026 states have (on average 1.0487039788674262) internal successors, (114336), 109026 states have internal predecessors, (114336), 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) [2023-12-20 17:30:10,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109027 states to 109027 states and 114336 transitions. [2023-12-20 17:30:10,932 INFO L78 Accepts]: Start accepts. Automaton has 109027 states and 114336 transitions. Word has length 705 [2023-12-20 17:30:10,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:10,933 INFO L495 AbstractCegarLoop]: Abstraction has 109027 states and 114336 transitions. [2023-12-20 17:30:10,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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) [2023-12-20 17:30:10,933 INFO L276 IsEmpty]: Start isEmpty. Operand 109027 states and 114336 transitions. [2023-12-20 17:30:10,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2023-12-20 17:30:10,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:10,950 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, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:30:10,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 17:30:10,950 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:10,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:10,951 INFO L85 PathProgramCache]: Analyzing trace with hash -551652975, now seen corresponding path program 1 times [2023-12-20 17:30:10,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:10,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355519071] [2023-12-20 17:30:10,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:10,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:11,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 698 proven. 0 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2023-12-20 17:30:11,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:11,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355519071] [2023-12-20 17:30:11,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355519071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:11,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:11,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:30:11,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940980400] [2023-12-20 17:30:11,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:11,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:30:11,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:11,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:30:11,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:30:11,776 INFO L87 Difference]: Start difference. First operand 109027 states and 114336 transitions. Second operand has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 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) [2023-12-20 17:30:14,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:14,476 INFO L93 Difference]: Finished difference Result 216338 states and 226256 transitions. [2023-12-20 17:30:14,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:30:14,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 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 712 [2023-12-20 17:30:14,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:14,610 INFO L225 Difference]: With dead ends: 216338 [2023-12-20 17:30:14,610 INFO L226 Difference]: Without dead ends: 107737 [2023-12-20 17:30:14,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:30:14,837 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 688 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:14,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 290 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:30:14,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107737 states. [2023-12-20 17:30:15,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107737 to 102195. [2023-12-20 17:30:16,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102195 states, 102194 states have (on average 1.0435250601796584) internal successors, (106642), 102194 states have internal predecessors, (106642), 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) [2023-12-20 17:30:16,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102195 states to 102195 states and 106642 transitions. [2023-12-20 17:30:16,185 INFO L78 Accepts]: Start accepts. Automaton has 102195 states and 106642 transitions. Word has length 712 [2023-12-20 17:30:16,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:16,186 INFO L495 AbstractCegarLoop]: Abstraction has 102195 states and 106642 transitions. [2023-12-20 17:30:16,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 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) [2023-12-20 17:30:16,186 INFO L276 IsEmpty]: Start isEmpty. Operand 102195 states and 106642 transitions. [2023-12-20 17:30:16,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2023-12-20 17:30:16,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:16,201 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, 6, 6, 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, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:30:16,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 17:30:16,201 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:16,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:16,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1605639357, now seen corresponding path program 1 times [2023-12-20 17:30:16,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:16,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222751254] [2023-12-20 17:30:16,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:16,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:16,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 775 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2023-12-20 17:30:16,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:16,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222751254] [2023-12-20 17:30:16,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222751254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:16,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:16,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:30:16,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613369280] [2023-12-20 17:30:16,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:16,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:30:16,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:16,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:30:16,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:30:16,917 INFO L87 Difference]: Start difference. First operand 102195 states and 106642 transitions. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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) [2023-12-20 17:30:18,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:18,768 INFO L93 Difference]: Finished difference Result 203966 states and 212858 transitions. [2023-12-20 17:30:18,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:30:18,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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 742 [2023-12-20 17:30:18,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:18,915 INFO L225 Difference]: With dead ends: 203966 [2023-12-20 17:30:18,916 INFO L226 Difference]: Without dead ends: 102197 [2023-12-20 17:30:18,979 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 [2023-12-20 17:30:18,979 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 94 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:18,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 732 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:30:19,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102197 states. [2023-12-20 17:30:20,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102197 to 101770. [2023-12-20 17:30:20,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101770 states, 101769 states have (on average 1.043412040994802) internal successors, (106187), 101769 states have internal predecessors, (106187), 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) [2023-12-20 17:30:20,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101770 states to 101770 states and 106187 transitions. [2023-12-20 17:30:20,561 INFO L78 Accepts]: Start accepts. Automaton has 101770 states and 106187 transitions. Word has length 742 [2023-12-20 17:30:20,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:20,562 INFO L495 AbstractCegarLoop]: Abstraction has 101770 states and 106187 transitions. [2023-12-20 17:30:20,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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) [2023-12-20 17:30:20,562 INFO L276 IsEmpty]: Start isEmpty. Operand 101770 states and 106187 transitions. [2023-12-20 17:30:20,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2023-12-20 17:30:20,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:20,582 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:30:20,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-20 17:30:20,582 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:20,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:20,583 INFO L85 PathProgramCache]: Analyzing trace with hash 801194215, now seen corresponding path program 1 times [2023-12-20 17:30:20,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:20,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247849035] [2023-12-20 17:30:20,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:20,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 581 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 17:30:21,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:21,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247849035] [2023-12-20 17:30:21,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247849035] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:21,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:21,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:30:21,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241159165] [2023-12-20 17:30:21,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:21,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:30:21,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:21,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:30:21,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:30:21,451 INFO L87 Difference]: Start difference. First operand 101770 states and 106187 transitions. Second operand has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 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) [2023-12-20 17:30:24,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:24,218 INFO L93 Difference]: Finished difference Result 215896 states and 225009 transitions. [2023-12-20 17:30:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:30:24,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 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 758 [2023-12-20 17:30:24,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:24,389 INFO L225 Difference]: With dead ends: 215896 [2023-12-20 17:30:24,390 INFO L226 Difference]: Without dead ends: 114127 [2023-12-20 17:30:24,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:30:24,453 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 681 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 2652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:24,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 87 Invalid, 2652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 2270 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 17:30:24,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114127 states. [2023-12-20 17:30:25,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114127 to 98358. [2023-12-20 17:30:25,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98358 states, 98357 states have (on average 1.0436369551735005) internal successors, (102649), 98357 states have internal predecessors, (102649), 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) [2023-12-20 17:30:25,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98358 states to 98358 states and 102649 transitions. [2023-12-20 17:30:25,924 INFO L78 Accepts]: Start accepts. Automaton has 98358 states and 102649 transitions. Word has length 758 [2023-12-20 17:30:25,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:25,924 INFO L495 AbstractCegarLoop]: Abstraction has 98358 states and 102649 transitions. [2023-12-20 17:30:25,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 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) [2023-12-20 17:30:25,925 INFO L276 IsEmpty]: Start isEmpty. Operand 98358 states and 102649 transitions. [2023-12-20 17:30:25,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2023-12-20 17:30:25,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:25,949 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:30:25,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-20 17:30:25,951 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:25,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:25,951 INFO L85 PathProgramCache]: Analyzing trace with hash -25925634, now seen corresponding path program 1 times [2023-12-20 17:30:25,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:25,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385251205] [2023-12-20 17:30:25,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:25,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 588 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 17:30:26,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:26,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385251205] [2023-12-20 17:30:26,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385251205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:26,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:26,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:30:26,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695939344] [2023-12-20 17:30:26,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:26,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:30:26,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:26,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:30:26,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:30:26,623 INFO L87 Difference]: Start difference. First operand 98358 states and 102649 transitions. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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) [2023-12-20 17:30:28,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:28,308 INFO L93 Difference]: Finished difference Result 199697 states and 208416 transitions. [2023-12-20 17:30:28,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:30:28,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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 765 [2023-12-20 17:30:28,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:28,433 INFO L225 Difference]: With dead ends: 199697 [2023-12-20 17:30:28,433 INFO L226 Difference]: Without dead ends: 101765 [2023-12-20 17:30:28,488 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 [2023-12-20 17:30:28,488 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 221 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:28,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 730 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 17:30:28,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101765 states. [2023-12-20 17:30:29,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101765 to 100486. [2023-12-20 17:30:29,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100486 states, 100485 states have (on average 1.0429218291287257) internal successors, (104798), 100485 states have internal predecessors, (104798), 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) [2023-12-20 17:30:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100486 states to 100486 states and 104798 transitions. [2023-12-20 17:30:29,863 INFO L78 Accepts]: Start accepts. Automaton has 100486 states and 104798 transitions. Word has length 765 [2023-12-20 17:30:29,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:29,864 INFO L495 AbstractCegarLoop]: Abstraction has 100486 states and 104798 transitions. [2023-12-20 17:30:29,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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) [2023-12-20 17:30:29,864 INFO L276 IsEmpty]: Start isEmpty. Operand 100486 states and 104798 transitions. [2023-12-20 17:30:29,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2023-12-20 17:30:29,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:29,882 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, 6, 6, 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, 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, 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] [2023-12-20 17:30:29,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-20 17:30:29,882 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:29,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:29,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1829545250, now seen corresponding path program 1 times [2023-12-20 17:30:29,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:29,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858012859] [2023-12-20 17:30:29,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:29,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1299 backedges. 900 proven. 94 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-12-20 17:30:30,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:30,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858012859] [2023-12-20 17:30:30,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858012859] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:30:30,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221095891] [2023-12-20 17:30:30,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:30,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:30:30,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:30:30,771 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) [2023-12-20 17:30:30,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 17:30:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:30,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:30:31,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:30:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1299 backedges. 994 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-12-20 17:30:31,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:30:31,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221095891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:31,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:30:31,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-12-20 17:30:31,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849603863] [2023-12-20 17:30:31,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:31,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 17:30:31,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:31,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 17:30:31,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:30:31,394 INFO L87 Difference]: Start difference. First operand 100486 states and 104798 transitions. Second operand has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 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) [2023-12-20 17:30:35,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:35,101 INFO L93 Difference]: Finished difference Result 206091 states and 214835 transitions. [2023-12-20 17:30:35,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 17:30:35,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 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 797 [2023-12-20 17:30:35,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:35,480 INFO L225 Difference]: With dead ends: 206091 [2023-12-20 17:30:35,481 INFO L226 Difference]: Without dead ends: 106031 [2023-12-20 17:30:35,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:30:35,566 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 1058 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 3154 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 3556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 3154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:35,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 152 Invalid, 3556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 3154 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 17:30:35,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106031 states. [2023-12-20 17:30:37,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106031 to 100486. [2023-12-20 17:30:37,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100486 states, 100485 states have (on average 1.042882022192367) internal successors, (104794), 100485 states have internal predecessors, (104794), 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) [2023-12-20 17:30:37,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100486 states to 100486 states and 104794 transitions. [2023-12-20 17:30:37,268 INFO L78 Accepts]: Start accepts. Automaton has 100486 states and 104794 transitions. Word has length 797 [2023-12-20 17:30:37,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:37,268 INFO L495 AbstractCegarLoop]: Abstraction has 100486 states and 104794 transitions. [2023-12-20 17:30:37,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 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) [2023-12-20 17:30:37,269 INFO L276 IsEmpty]: Start isEmpty. Operand 100486 states and 104794 transitions. [2023-12-20 17:30:37,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2023-12-20 17:30:37,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:37,294 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:30:37,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 17:30:37,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:30:37,503 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:37,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:37,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1455665777, now seen corresponding path program 1 times [2023-12-20 17:30:37,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:37,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254171952] [2023-12-20 17:30:37,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:37,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 911 proven. 43 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-20 17:30:38,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:38,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254171952] [2023-12-20 17:30:38,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254171952] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:30:38,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630456698] [2023-12-20 17:30:38,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:38,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:30:38,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:30:38,846 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) [2023-12-20 17:30:38,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 17:30:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:39,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-20 17:30:39,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:30:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 622 proven. 332 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-20 17:30:40,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:30:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 786 proven. 168 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-20 17:30:42,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630456698] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 17:30:42,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 17:30:42,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-12-20 17:30:42,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816473563] [2023-12-20 17:30:42,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 17:30:42,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 17:30:42,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:42,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 17:30:42,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-20 17:30:42,746 INFO L87 Difference]: Start difference. First operand 100486 states and 104794 transitions. Second operand has 16 states, 16 states have (on average 114.0625) internal successors, (1825), 16 states have internal predecessors, (1825), 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) [2023-12-20 17:30:52,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:52,535 INFO L93 Difference]: Finished difference Result 219487 states and 228743 transitions. [2023-12-20 17:30:52,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 17:30:52,557 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 114.0625) internal successors, (1825), 16 states have internal predecessors, (1825), 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 806 [2023-12-20 17:30:52,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:52,818 INFO L225 Difference]: With dead ends: 219487 [2023-12-20 17:30:52,818 INFO L226 Difference]: Without dead ends: 119427 [2023-12-20 17:30:52,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1644 GetRequests, 1613 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=260, Invalid=796, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 17:30:52,875 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 9414 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 16152 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9414 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 16736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 16152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:52,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9414 Valid, 414 Invalid, 16736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 16152 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-12-20 17:30:52,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119427 states. [2023-12-20 17:30:54,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119427 to 88978. [2023-12-20 17:30:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88978 states, 88977 states have (on average 1.036447621295391) internal successors, (92220), 88977 states have internal predecessors, (92220), 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) [2023-12-20 17:30:54,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88978 states to 88978 states and 92220 transitions. [2023-12-20 17:30:54,403 INFO L78 Accepts]: Start accepts. Automaton has 88978 states and 92220 transitions. Word has length 806 [2023-12-20 17:30:54,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:54,403 INFO L495 AbstractCegarLoop]: Abstraction has 88978 states and 92220 transitions. [2023-12-20 17:30:54,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 114.0625) internal successors, (1825), 16 states have internal predecessors, (1825), 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) [2023-12-20 17:30:54,403 INFO L276 IsEmpty]: Start isEmpty. Operand 88978 states and 92220 transitions. [2023-12-20 17:30:54,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2023-12-20 17:30:54,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:54,421 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, 6, 6, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:30:54,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 17:30:54,625 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,SelfDestructingSolverStorable32 [2023-12-20 17:30:54,626 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:54,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:54,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1989559821, now seen corresponding path program 1 times [2023-12-20 17:30:54,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:54,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691954737] [2023-12-20 17:30:54,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:54,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1163 backedges. 611 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-12-20 17:30:55,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:55,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691954737] [2023-12-20 17:30:55,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691954737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:55,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:55,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:30:55,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062220668] [2023-12-20 17:30:55,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:55,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:30:55,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:55,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:30:55,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:30:55,642 INFO L87 Difference]: Start difference. First operand 88978 states and 92220 transitions. Second operand has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 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) [2023-12-20 17:30:57,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:57,753 INFO L93 Difference]: Finished difference Result 188615 states and 195265 transitions. [2023-12-20 17:30:57,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:30:57,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 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 859 [2023-12-20 17:30:57,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:57,866 INFO L225 Difference]: With dead ends: 188615 [2023-12-20 17:30:57,866 INFO L226 Difference]: Without dead ends: 99638 [2023-12-20 17:30:57,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:30:57,921 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 792 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 2559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:57,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 100 Invalid, 2559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:30:58,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99638 states. [2023-12-20 17:30:59,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99638 to 88128. [2023-12-20 17:30:59,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88128 states, 88127 states have (on average 1.0365722196375684) internal successors, (91350), 88127 states have internal predecessors, (91350), 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) [2023-12-20 17:30:59,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88128 states to 88128 states and 91350 transitions. [2023-12-20 17:30:59,197 INFO L78 Accepts]: Start accepts. Automaton has 88128 states and 91350 transitions. Word has length 859 [2023-12-20 17:30:59,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:59,197 INFO L495 AbstractCegarLoop]: Abstraction has 88128 states and 91350 transitions. [2023-12-20 17:30:59,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 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) [2023-12-20 17:30:59,198 INFO L276 IsEmpty]: Start isEmpty. Operand 88128 states and 91350 transitions. [2023-12-20 17:30:59,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 909 [2023-12-20 17:30:59,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:59,217 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:30:59,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-20 17:30:59,218 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:59,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:59,218 INFO L85 PathProgramCache]: Analyzing trace with hash -884091254, now seen corresponding path program 1 times [2023-12-20 17:30:59,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:59,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770858775] [2023-12-20 17:30:59,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:59,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1905 backedges. 1697 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-12-20 17:31:00,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:31:00,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770858775] [2023-12-20 17:31:00,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770858775] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:31:00,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:31:00,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:31:00,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248642591] [2023-12-20 17:31:00,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:31:00,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:31:00,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:31:00,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:31:00,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:31:00,786 INFO L87 Difference]: Start difference. First operand 88128 states and 91350 transitions. Second operand has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 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) [2023-12-20 17:31:02,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:31:02,833 INFO L93 Difference]: Finished difference Result 192437 states and 199521 transitions. [2023-12-20 17:31:02,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:31:02,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 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 908 [2023-12-20 17:31:02,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:31:03,068 INFO L225 Difference]: With dead ends: 192437 [2023-12-20 17:31:03,068 INFO L226 Difference]: Without dead ends: 104735 [2023-12-20 17:31:03,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:31:03,107 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 626 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:31:03,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 115 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 17:31:03,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104735 states. [2023-12-20 17:31:04,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104735 to 96221. [2023-12-20 17:31:04,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96221 states, 96220 states have (on average 1.0361671170234878) internal successors, (99700), 96220 states have internal predecessors, (99700), 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) [2023-12-20 17:31:04,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96221 states to 96221 states and 99700 transitions. [2023-12-20 17:31:04,383 INFO L78 Accepts]: Start accepts. Automaton has 96221 states and 99700 transitions. Word has length 908 [2023-12-20 17:31:04,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:31:04,384 INFO L495 AbstractCegarLoop]: Abstraction has 96221 states and 99700 transitions. [2023-12-20 17:31:04,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 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) [2023-12-20 17:31:04,384 INFO L276 IsEmpty]: Start isEmpty. Operand 96221 states and 99700 transitions. [2023-12-20 17:31:04,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1002 [2023-12-20 17:31:04,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:31:04,414 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:31:04,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-20 17:31:04,414 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:31:04,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:31:04,414 INFO L85 PathProgramCache]: Analyzing trace with hash 748108272, now seen corresponding path program 1 times [2023-12-20 17:31:04,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:31:04,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884916710] [2023-12-20 17:31:04,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:04,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:31:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:05,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1972 backedges. 1557 proven. 186 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-20 17:31:05,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:31:05,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884916710] [2023-12-20 17:31:05,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884916710] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:31:05,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579455743] [2023-12-20 17:31:05,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:05,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:31:05,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:31:05,514 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:31:05,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 17:31:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:05,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 1197 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-20 17:31:05,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:31:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1972 backedges. 504 proven. 923 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2023-12-20 17:31:09,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:31:09,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1972 backedges. 995 proven. 0 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2023-12-20 17:31:09,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579455743] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:31:09,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:31:09,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 6] total 11 [2023-12-20 17:31:09,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204858264] [2023-12-20 17:31:09,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:31:09,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:31:09,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:31:09,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:31:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-20 17:31:09,729 INFO L87 Difference]: Start difference. First operand 96221 states and 99700 transitions. Second operand has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 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) [2023-12-20 17:31:12,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:31:12,169 INFO L93 Difference]: Finished difference Result 100502 states and 104044 transitions. [2023-12-20 17:31:12,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:31:12,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 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 1001 [2023-12-20 17:31:12,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:31:12,281 INFO L225 Difference]: With dead ends: 100502 [2023-12-20 17:31:12,281 INFO L226 Difference]: Without dead ends: 100075 [2023-12-20 17:31:12,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2005 GetRequests, 1996 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-20 17:31:12,305 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 664 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 2527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:31:12,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 98 Invalid, 2527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 17:31:12,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100075 states. [2023-12-20 17:31:13,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100075 to 96221. [2023-12-20 17:31:13,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96221 states, 96220 states have (on average 1.0360839742257326) internal successors, (99692), 96220 states have internal predecessors, (99692), 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) [2023-12-20 17:31:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96221 states to 96221 states and 99692 transitions. [2023-12-20 17:31:13,352 INFO L78 Accepts]: Start accepts. Automaton has 96221 states and 99692 transitions. Word has length 1001 [2023-12-20 17:31:13,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:31:13,352 INFO L495 AbstractCegarLoop]: Abstraction has 96221 states and 99692 transitions. [2023-12-20 17:31:13,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 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) [2023-12-20 17:31:13,352 INFO L276 IsEmpty]: Start isEmpty. Operand 96221 states and 99692 transitions. [2023-12-20 17:31:13,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2023-12-20 17:31:13,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:31:13,387 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, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:31:13,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 17:31:13,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:31:13,590 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:31:13,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:31:13,591 INFO L85 PathProgramCache]: Analyzing trace with hash -954798713, now seen corresponding path program 1 times [2023-12-20 17:31:13,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:31:13,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976872772] [2023-12-20 17:31:13,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:13,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:31:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 539 proven. 0 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2023-12-20 17:31:14,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:31:14,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976872772] [2023-12-20 17:31:14,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976872772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:31:14,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:31:14,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:31:14,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566126166] [2023-12-20 17:31:14,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:31:14,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:31:14,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:31:14,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:31:14,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:31:14,981 INFO L87 Difference]: Start difference. First operand 96221 states and 99692 transitions. Second operand has 4 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 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) [2023-12-20 17:31:17,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:31:17,287 INFO L93 Difference]: Finished difference Result 209919 states and 217301 transitions. [2023-12-20 17:31:17,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:31:17,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 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 1095 [2023-12-20 17:31:17,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:31:17,425 INFO L225 Difference]: With dead ends: 209919 [2023-12-20 17:31:17,425 INFO L226 Difference]: Without dead ends: 113699 [2023-12-20 17:31:17,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:31:17,480 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 810 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 2466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:31:17,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 193 Invalid, 2466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 2202 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:31:17,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113699 states. [2023-12-20 17:31:18,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113699 to 90696. [2023-12-20 17:31:18,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90696 states, 90695 states have (on average 1.0346987154749434) internal successors, (93842), 90695 states have internal predecessors, (93842), 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) [2023-12-20 17:31:18,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90696 states to 90696 states and 93842 transitions. [2023-12-20 17:31:18,763 INFO L78 Accepts]: Start accepts. Automaton has 90696 states and 93842 transitions. Word has length 1095 [2023-12-20 17:31:18,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:31:18,763 INFO L495 AbstractCegarLoop]: Abstraction has 90696 states and 93842 transitions. [2023-12-20 17:31:18,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 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) [2023-12-20 17:31:18,764 INFO L276 IsEmpty]: Start isEmpty. Operand 90696 states and 93842 transitions. [2023-12-20 17:31:18,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1140 [2023-12-20 17:31:18,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:31:18,799 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, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:31:18,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-20 17:31:18,800 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:31:18,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:31:18,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1509883318, now seen corresponding path program 1 times [2023-12-20 17:31:18,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:31:18,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629530741] [2023-12-20 17:31:18,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:18,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:31:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:19,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2023-12-20 17:31:19,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:31:19,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629530741] [2023-12-20 17:31:19,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629530741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:31:19,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:31:19,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:31:19,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753788925] [2023-12-20 17:31:19,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:31:19,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:31:19,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:31:19,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:31:19,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:31:19,588 INFO L87 Difference]: Start difference. First operand 90696 states and 93842 transitions. Second operand has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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) [2023-12-20 17:31:21,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:31:21,999 INFO L93 Difference]: Finished difference Result 187366 states and 193685 transitions. [2023-12-20 17:31:21,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:31:21,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 1139 [2023-12-20 17:31:22,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:31:22,102 INFO L225 Difference]: With dead ends: 187366 [2023-12-20 17:31:22,102 INFO L226 Difference]: Without dead ends: 95819 [2023-12-20 17:31:22,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:31:22,154 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 848 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 2784 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:31:22,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 631 Invalid, 2927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2784 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 17:31:22,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95819 states. [2023-12-20 17:31:23,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95819 to 90687. [2023-12-20 17:31:23,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90687 states, 90686 states have (on average 1.0309198773790882) internal successors, (93490), 90686 states have internal predecessors, (93490), 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) [2023-12-20 17:31:23,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90687 states to 90687 states and 93490 transitions. [2023-12-20 17:31:23,466 INFO L78 Accepts]: Start accepts. Automaton has 90687 states and 93490 transitions. Word has length 1139 [2023-12-20 17:31:23,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:31:23,467 INFO L495 AbstractCegarLoop]: Abstraction has 90687 states and 93490 transitions. [2023-12-20 17:31:23,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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) [2023-12-20 17:31:23,467 INFO L276 IsEmpty]: Start isEmpty. Operand 90687 states and 93490 transitions. [2023-12-20 17:31:23,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1152 [2023-12-20 17:31:23,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:31:23,510 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:31:23,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-20 17:31:23,511 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:31:23,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:31:23,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1192124223, now seen corresponding path program 1 times [2023-12-20 17:31:23,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:31:23,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941949647] [2023-12-20 17:31:23,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:23,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:31:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2086 backedges. 1355 proven. 0 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2023-12-20 17:31:24,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:31:24,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941949647] [2023-12-20 17:31:24,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941949647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:31:24,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:31:24,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:31:24,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528645609] [2023-12-20 17:31:24,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:31:24,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:31:24,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:31:24,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:31:24,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:31:24,094 INFO L87 Difference]: Start difference. First operand 90687 states and 93490 transitions. Second operand has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 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) [2023-12-20 17:31:26,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:31:26,667 INFO L93 Difference]: Finished difference Result 189477 states and 195272 transitions. [2023-12-20 17:31:26,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:31:26,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 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 1151 [2023-12-20 17:31:26,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:31:26,799 INFO L225 Difference]: With dead ends: 189477 [2023-12-20 17:31:26,799 INFO L226 Difference]: Without dead ends: 98791 [2023-12-20 17:31:26,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:31:26,840 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 849 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 2103 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 2320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 2103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:31:26,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 163 Invalid, 2320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 2103 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:31:26,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98791 states. [2023-12-20 17:31:28,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98791 to 87703. [2023-12-20 17:31:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87703 states, 87702 states have (on average 1.0293037787051607) internal successors, (90272), 87702 states have internal predecessors, (90272), 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) [2023-12-20 17:31:28,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87703 states to 87703 states and 90272 transitions. [2023-12-20 17:31:28,303 INFO L78 Accepts]: Start accepts. Automaton has 87703 states and 90272 transitions. Word has length 1151 [2023-12-20 17:31:28,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:31:28,303 INFO L495 AbstractCegarLoop]: Abstraction has 87703 states and 90272 transitions. [2023-12-20 17:31:28,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 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) [2023-12-20 17:31:28,304 INFO L276 IsEmpty]: Start isEmpty. Operand 87703 states and 90272 transitions. [2023-12-20 17:31:28,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1167 [2023-12-20 17:31:28,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:31:28,350 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:31:28,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-20 17:31:28,350 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:31:28,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:31:28,351 INFO L85 PathProgramCache]: Analyzing trace with hash 846522592, now seen corresponding path program 1 times [2023-12-20 17:31:28,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:31:28,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742817320] [2023-12-20 17:31:28,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:28,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:31:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:30,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 854 proven. 323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:31:30,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:31:30,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742817320] [2023-12-20 17:31:30,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742817320] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:31:30,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891382799] [2023-12-20 17:31:30,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:30,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:31:30,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:31:30,268 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:31:30,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 17:31:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:30,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:31:30,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:31:30,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 801 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2023-12-20 17:31:30,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:31:30,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891382799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:31:30,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:31:30,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-12-20 17:31:30,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797680565] [2023-12-20 17:31:30,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:31:30,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:31:30,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:31:30,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:31:30,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:31:30,969 INFO L87 Difference]: Start difference. First operand 87703 states and 90272 transitions. Second operand has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 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) [2023-12-20 17:31:33,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:31:33,115 INFO L93 Difference]: Finished difference Result 103896 states and 106762 transitions. [2023-12-20 17:31:33,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:31:33,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 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 1166 [2023-12-20 17:31:33,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:31:33,233 INFO L225 Difference]: With dead ends: 103896 [2023-12-20 17:31:33,233 INFO L226 Difference]: Without dead ends: 103469 [2023-12-20 17:31:33,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1170 GetRequests, 1164 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:31:33,261 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 555 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 2492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:31:33,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 117 Invalid, 2492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 17:31:33,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103469 states. [2023-12-20 17:31:34,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103469 to 90680. [2023-12-20 17:31:34,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90680 states, 90679 states have (on average 1.0293452728856736) internal successors, (93340), 90679 states have internal predecessors, (93340), 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) [2023-12-20 17:31:34,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90680 states to 90680 states and 93340 transitions. [2023-12-20 17:31:34,633 INFO L78 Accepts]: Start accepts. Automaton has 90680 states and 93340 transitions. Word has length 1166 [2023-12-20 17:31:34,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:31:34,634 INFO L495 AbstractCegarLoop]: Abstraction has 90680 states and 93340 transitions. [2023-12-20 17:31:34,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 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) [2023-12-20 17:31:34,634 INFO L276 IsEmpty]: Start isEmpty. Operand 90680 states and 93340 transitions. [2023-12-20 17:31:34,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1198 [2023-12-20 17:31:34,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:31:34,674 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:31:34,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 17:31:34,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:31:34,881 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:31:34,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:31:34,881 INFO L85 PathProgramCache]: Analyzing trace with hash 707221646, now seen corresponding path program 1 times [2023-12-20 17:31:34,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:31:34,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114319788] [2023-12-20 17:31:34,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:34,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:31:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2201 backedges. 1582 proven. 0 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2023-12-20 17:31:35,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:31:35,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114319788] [2023-12-20 17:31:35,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114319788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:31:35,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:31:35,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:31:35,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672615944] [2023-12-20 17:31:35,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:31:35,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:31:35,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:31:35,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:31:35,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:31:35,789 INFO L87 Difference]: Start difference. First operand 90680 states and 93340 transitions. Second operand has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 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) [2023-12-20 17:31:37,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:31:37,379 INFO L93 Difference]: Finished difference Result 179232 states and 184491 transitions. [2023-12-20 17:31:37,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:31:37,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 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 1197 [2023-12-20 17:31:37,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:31:37,476 INFO L225 Difference]: With dead ends: 179232 [2023-12-20 17:31:37,477 INFO L226 Difference]: Without dead ends: 88553 [2023-12-20 17:31:37,519 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 [2023-12-20 17:31:37,519 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 129 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:31:37,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 669 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 17:31:37,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88553 states. [2023-12-20 17:31:38,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88553 to 81745. [2023-12-20 17:31:38,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81745 states, 81744 states have (on average 1.0288461538461537) internal successors, (84102), 81744 states have internal predecessors, (84102), 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) [2023-12-20 17:31:38,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81745 states to 81745 states and 84102 transitions. [2023-12-20 17:31:38,691 INFO L78 Accepts]: Start accepts. Automaton has 81745 states and 84102 transitions. Word has length 1197 [2023-12-20 17:31:38,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:31:38,692 INFO L495 AbstractCegarLoop]: Abstraction has 81745 states and 84102 transitions. [2023-12-20 17:31:38,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 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) [2023-12-20 17:31:38,692 INFO L276 IsEmpty]: Start isEmpty. Operand 81745 states and 84102 transitions. [2023-12-20 17:31:38,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1208 [2023-12-20 17:31:38,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:31:38,738 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, 6, 6, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:31:38,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-20 17:31:38,738 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:31:38,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:31:38,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2045705117, now seen corresponding path program 1 times [2023-12-20 17:31:38,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:31:38,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797376286] [2023-12-20 17:31:38,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:38,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:31:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:39,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1748 backedges. 1104 proven. 399 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 17:31:39,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:31:39,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797376286] [2023-12-20 17:31:39,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797376286] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:31:39,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263929982] [2023-12-20 17:31:39,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:39,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:31:39,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:31:39,786 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:31:39,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 17:31:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:40,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 17:31:40,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:31:43,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1748 backedges. 519 proven. 978 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2023-12-20 17:31:43,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:31:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1748 backedges. 378 proven. 1119 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2023-12-20 17:31:48,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263929982] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 17:31:48,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 17:31:48,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 7] total 15 [2023-12-20 17:31:48,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385719183] [2023-12-20 17:31:48,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 17:31:48,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-20 17:31:48,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:31:48,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-20 17:31:48,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-12-20 17:31:48,061 INFO L87 Difference]: Start difference. First operand 81745 states and 84102 transitions. Second operand has 15 states, 15 states have (on average 175.13333333333333) internal successors, (2627), 15 states have internal predecessors, (2627), 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) [2023-12-20 17:32:04,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:32:04,141 INFO L93 Difference]: Finished difference Result 210417 states and 215830 transitions. [2023-12-20 17:32:04,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-20 17:32:04,141 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 175.13333333333333) internal successors, (2627), 15 states have internal predecessors, (2627), 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 1207 [2023-12-20 17:32:04,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:32:04,296 INFO L225 Difference]: With dead ends: 210417 [2023-12-20 17:32:04,297 INFO L226 Difference]: Without dead ends: 127819 [2023-12-20 17:32:04,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2530 GetRequests, 2441 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3096 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1437, Invalid=6753, Unknown=0, NotChecked=0, Total=8190 [2023-12-20 17:32:04,360 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 14819 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 22907 mSolverCounterSat, 2882 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14819 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 25789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2882 IncrementalHoareTripleChecker+Valid, 22907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:32:04,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14819 Valid, 370 Invalid, 25789 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2882 Valid, 22907 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2023-12-20 17:32:04,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127819 states. [2023-12-20 17:32:05,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127819 to 81320. [2023-12-20 17:32:05,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81320 states, 81319 states have (on average 1.0284189426825219) internal successors, (83630), 81319 states have internal predecessors, (83630), 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) [2023-12-20 17:32:05,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81320 states to 81320 states and 83630 transitions. [2023-12-20 17:32:05,469 INFO L78 Accepts]: Start accepts. Automaton has 81320 states and 83630 transitions. Word has length 1207 [2023-12-20 17:32:05,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:32:05,470 INFO L495 AbstractCegarLoop]: Abstraction has 81320 states and 83630 transitions. [2023-12-20 17:32:05,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 175.13333333333333) internal successors, (2627), 15 states have internal predecessors, (2627), 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) [2023-12-20 17:32:05,471 INFO L276 IsEmpty]: Start isEmpty. Operand 81320 states and 83630 transitions. [2023-12-20 17:32:05,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1246 [2023-12-20 17:32:05,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:32:05,521 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, 6, 6, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:32:05,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 17:32:05,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-12-20 17:32:05,727 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:32:05,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:32:05,728 INFO L85 PathProgramCache]: Analyzing trace with hash 194718663, now seen corresponding path program 1 times [2023-12-20 17:32:05,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:32:05,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506447988] [2023-12-20 17:32:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:32:05,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:32:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat