/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/Problem19_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 17:56:36,050 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 17:56:36,117 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 17:56:36,120 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 17:56:36,120 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 17:56:36,141 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 17:56:36,142 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 17:56:36,142 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 17:56:36,143 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 17:56:36,146 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 17:56:36,146 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 17:56:36,147 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 17:56:36,147 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 17:56:36,148 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 17:56:36,148 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 17:56:36,149 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 17:56:36,149 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 17:56:36,149 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 17:56:36,149 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 17:56:36,149 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 17:56:36,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 17:56:36,150 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 17:56:36,150 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 17:56:36,150 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 17:56:36,150 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 17:56:36,151 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 17:56:36,151 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 17:56:36,151 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 17:56:36,151 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 17:56:36,152 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 17:56:36,152 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 17:56:36,153 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 17:56:36,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:56:36,153 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 17:56:36,153 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 17:56:36,153 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 17:56:36,153 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 17:56:36,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 17:56:36,154 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 17:56:36,154 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 17:56:36,154 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 17:56:36,154 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 17:56:36,154 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 17:56:36,154 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 17:56:36,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 17:56:36,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 17:56:36,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 17:56:36,402 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 17:56:36,402 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 17:56:36,403 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label28.c [2023-12-20 17:56:37,453 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 17:56:37,884 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 17:56:37,885 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label28.c [2023-12-20 17:56:37,923 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/700213f99/0b303dde03bd4408854cb585109ec6b7/FLAGce3d49cd2 [2023-12-20 17:56:37,935 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/700213f99/0b303dde03bd4408854cb585109ec6b7 [2023-12-20 17:56:37,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 17:56:37,938 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 17:56:37,939 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 17:56:37,939 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 17:56:37,942 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 17:56:37,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:56:37" (1/1) ... [2023-12-20 17:56:37,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3025a4a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:56:37, skipping insertion in model container [2023-12-20 17:56:37,945 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:56:37" (1/1) ... [2023-12-20 17:56:38,101 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 17:56:38,344 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/Problem19_label28.c[3379,3392] [2023-12-20 17:56:39,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:56:39,263 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 17:56:39,282 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/Problem19_label28.c[3379,3392] [2023-12-20 17:56:39,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:56:39,809 INFO L206 MainTranslator]: Completed translation [2023-12-20 17:56:39,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:56:39 WrapperNode [2023-12-20 17:56:39,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 17:56:39,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 17:56:39,811 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 17:56:39,811 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 17:56:39,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:56:39" (1/1) ... [2023-12-20 17:56:39,888 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:56:39" (1/1) ... [2023-12-20 17:56:40,550 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9431 [2023-12-20 17:56:40,551 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 17:56:40,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 17:56:40,551 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 17:56:40,551 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 17:56:40,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:56:39" (1/1) ... [2023-12-20 17:56:40,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:56:39" (1/1) ... [2023-12-20 17:56:40,808 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:56:39" (1/1) ... [2023-12-20 17:56:41,051 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 17:56:41,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:56:39" (1/1) ... [2023-12-20 17:56:41,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:56:39" (1/1) ... [2023-12-20 17:56:41,307 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:56:39" (1/1) ... [2023-12-20 17:56:41,348 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:56:39" (1/1) ... [2023-12-20 17:56:41,386 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:56:39" (1/1) ... [2023-12-20 17:56:41,410 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:56:39" (1/1) ... [2023-12-20 17:56:41,528 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 17:56:41,530 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 17:56:41,530 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 17:56:41,530 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 17:56:41,531 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:56:39" (1/1) ... [2023-12-20 17:56:41,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:56:41,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:56:41,575 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 17:56:41,606 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 17:56:41,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 17:56:41,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 17:56:41,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 17:56:41,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 17:56:41,685 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 17:56:41,687 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 17:56:47,584 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 17:56:47,646 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 17:56:47,646 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 17:56:47,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:56:47 BoogieIcfgContainer [2023-12-20 17:56:47,646 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 17:56:47,648 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 17:56:47,648 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 17:56:47,650 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 17:56:47,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:56:37" (1/3) ... [2023-12-20 17:56:47,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1062e727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:56:47, skipping insertion in model container [2023-12-20 17:56:47,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:56:39" (2/3) ... [2023-12-20 17:56:47,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1062e727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:56:47, skipping insertion in model container [2023-12-20 17:56:47,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:56:47" (3/3) ... [2023-12-20 17:56:47,653 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label28.c [2023-12-20 17:56:47,664 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 17:56:47,665 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 17:56:47,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 17:56:47,729 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;@579c23ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 17:56:47,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 17:56:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 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 17:56:47,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-20 17:56:47,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:56:47,743 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] [2023-12-20 17:56:47,743 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:56:47,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:56:47,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1811537136, now seen corresponding path program 1 times [2023-12-20 17:56:47,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:56:47,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224456950] [2023-12-20 17:56:47,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:56:47,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:56:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:56:47,889 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 17:56:47,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:56:47,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224456950] [2023-12-20 17:56:47,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224456950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:56:47,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:56:47,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:56:47,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274544073] [2023-12-20 17:56:47,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:56:47,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 17:56:47,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:56:47,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 17:56:47,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:56:47,925 INFO L87 Difference]: Start difference. First operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 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 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 17:56:48,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:56:48,008 INFO L93 Difference]: Finished difference Result 3371 states and 6405 transitions. [2023-12-20 17:56:48,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 17:56:48,010 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-12-20 17:56:48,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:56:48,022 INFO L225 Difference]: With dead ends: 3371 [2023-12-20 17:56:48,022 INFO L226 Difference]: Without dead ends: 1684 [2023-12-20 17:56:48,029 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 17:56:48,031 INFO L413 NwaCegarLoop]: 3138 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, 3138 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 17:56:48,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3138 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 17:56:48,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2023-12-20 17:56:48,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1684. [2023-12-20 17:56:48,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.8645276292335116) internal successors, (3138), 1683 states have internal predecessors, (3138), 0 states have call successors, (0), 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 17:56:48,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 3138 transitions. [2023-12-20 17:56:48,109 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 3138 transitions. Word has length 22 [2023-12-20 17:56:48,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:56:48,110 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 3138 transitions. [2023-12-20 17:56:48,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 17:56:48,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 3138 transitions. [2023-12-20 17:56:48,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-20 17:56:48,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:56:48,110 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] [2023-12-20 17:56:48,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 17:56:48,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:56:48,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:56:48,111 INFO L85 PathProgramCache]: Analyzing trace with hash 955282728, now seen corresponding path program 1 times [2023-12-20 17:56:48,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:56:48,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399481401] [2023-12-20 17:56:48,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:56:48,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:56:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:56:48,193 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 17:56:48,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:56:48,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399481401] [2023-12-20 17:56:48,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399481401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:56:48,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:56:48,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:56:48,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561407528] [2023-12-20 17:56:48,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:56:48,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:56:48,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:56:48,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:56:48,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:56:48,196 INFO L87 Difference]: Start difference. First operand 1684 states and 3138 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 17:56:54,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:56:54,241 INFO L93 Difference]: Finished difference Result 4811 states and 9064 transitions. [2023-12-20 17:56:54,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:56:54,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-12-20 17:56:54,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:56:54,251 INFO L225 Difference]: With dead ends: 4811 [2023-12-20 17:56:54,252 INFO L226 Difference]: Without dead ends: 3128 [2023-12-20 17:56:54,254 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 17:56:54,255 INFO L413 NwaCegarLoop]: 1324 mSDtfsCounter, 1584 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 4269 mSolverCounterSat, 1473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 5742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1473 IncrementalHoareTripleChecker+Valid, 4269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:56:54,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1584 Valid, 1543 Invalid, 5742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1473 Valid, 4269 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-20 17:56:54,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2023-12-20 17:56:54,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3107. [2023-12-20 17:56:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 3106 states have (on average 1.601416613007083) internal successors, (4974), 3106 states have internal predecessors, (4974), 0 states have call successors, (0), 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 17:56:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 4974 transitions. [2023-12-20 17:56:54,313 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 4974 transitions. Word has length 22 [2023-12-20 17:56:54,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:56:54,313 INFO L495 AbstractCegarLoop]: Abstraction has 3107 states and 4974 transitions. [2023-12-20 17:56:54,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 17:56:54,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 4974 transitions. [2023-12-20 17:56:54,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-20 17:56:54,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:56:54,318 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 17:56:54,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 17:56:54,320 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:56:54,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:56:54,325 INFO L85 PathProgramCache]: Analyzing trace with hash -946494827, now seen corresponding path program 1 times [2023-12-20 17:56:54,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:56:54,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6302899] [2023-12-20 17:56:54,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:56:54,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:56:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:56:54,606 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:56:54,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:56:54,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6302899] [2023-12-20 17:56:54,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6302899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:56:54,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:56:54,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:56:54,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566741073] [2023-12-20 17:56:54,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:56:54,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:56:54,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:56:54,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:56:54,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:56:54,613 INFO L87 Difference]: Start difference. First operand 3107 states and 4974 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 17:57:03,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:57:03,389 INFO L93 Difference]: Finished difference Result 10358 states and 16186 transitions. [2023-12-20 17:57:03,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:57:03,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-20 17:57:03,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:57:03,412 INFO L225 Difference]: With dead ends: 10358 [2023-12-20 17:57:03,413 INFO L226 Difference]: Without dead ends: 7252 [2023-12-20 17:57:03,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:57:03,422 INFO L413 NwaCegarLoop]: 1022 mSDtfsCounter, 4322 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 9505 mSolverCounterSat, 1498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4322 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 11003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1498 IncrementalHoareTripleChecker+Valid, 9505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:57:03,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4322 Valid, 1290 Invalid, 11003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1498 Valid, 9505 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-12-20 17:57:03,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7252 states. [2023-12-20 17:57:03,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7252 to 7248. [2023-12-20 17:57:03,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7248 states, 7247 states have (on average 1.4503932661791086) internal successors, (10511), 7247 states have internal predecessors, (10511), 0 states have call successors, (0), 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 17:57:03,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7248 states to 7248 states and 10511 transitions. [2023-12-20 17:57:03,589 INFO L78 Accepts]: Start accepts. Automaton has 7248 states and 10511 transitions. Word has length 89 [2023-12-20 17:57:03,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:57:03,593 INFO L495 AbstractCegarLoop]: Abstraction has 7248 states and 10511 transitions. [2023-12-20 17:57:03,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 17:57:03,597 INFO L276 IsEmpty]: Start isEmpty. Operand 7248 states and 10511 transitions. [2023-12-20 17:57:03,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-20 17:57:03,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:57:03,604 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:57:03,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 17:57:03,604 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:57:03,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:57:03,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1983831329, now seen corresponding path program 1 times [2023-12-20 17:57:03,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:57:03,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100451320] [2023-12-20 17:57:03,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:57:03,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:57:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:57:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 17:57:04,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:57:04,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100451320] [2023-12-20 17:57:04,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100451320] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:57:04,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:57:04,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:57:04,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476262719] [2023-12-20 17:57:04,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:57:04,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:57:04,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:57:04,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:57:04,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:57:04,307 INFO L87 Difference]: Start difference. First operand 7248 states and 10511 transitions. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 17:57:12,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:57:12,284 INFO L93 Difference]: Finished difference Result 17268 states and 24866 transitions. [2023-12-20 17:57:12,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:57:12,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 296 [2023-12-20 17:57:12,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:57:12,316 INFO L225 Difference]: With dead ends: 17268 [2023-12-20 17:57:12,316 INFO L226 Difference]: Without dead ends: 11386 [2023-12-20 17:57:12,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:57:12,334 INFO L413 NwaCegarLoop]: 1801 mSDtfsCounter, 3755 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9456 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 9886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 9456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:57:12,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3755 Valid, 2155 Invalid, 9886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 9456 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-20 17:57:12,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11386 states. [2023-12-20 17:57:12,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11386 to 11366. [2023-12-20 17:57:12,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11366 states, 11365 states have (on average 1.328640563132424) internal successors, (15100), 11365 states have internal predecessors, (15100), 0 states have call successors, (0), 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 17:57:12,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11366 states to 11366 states and 15100 transitions. [2023-12-20 17:57:12,512 INFO L78 Accepts]: Start accepts. Automaton has 11366 states and 15100 transitions. Word has length 296 [2023-12-20 17:57:12,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:57:12,514 INFO L495 AbstractCegarLoop]: Abstraction has 11366 states and 15100 transitions. [2023-12-20 17:57:12,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 17:57:12,514 INFO L276 IsEmpty]: Start isEmpty. Operand 11366 states and 15100 transitions. [2023-12-20 17:57:12,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-12-20 17:57:12,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:57:12,517 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:57:12,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 17:57:12,517 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:57:12,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:57:12,518 INFO L85 PathProgramCache]: Analyzing trace with hash 504244347, now seen corresponding path program 1 times [2023-12-20 17:57:12,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:57:12,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528163782] [2023-12-20 17:57:12,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:57:12,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:57:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:57:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:57:12,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:57:12,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528163782] [2023-12-20 17:57:12,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528163782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:57:12,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:57:12,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:57:12,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465897360] [2023-12-20 17:57:12,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:57:12,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:57:12,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:57:12,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:57:12,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:57:12,929 INFO L87 Difference]: Start difference. First operand 11366 states and 15100 transitions. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 17:57:17,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:57:17,857 INFO L93 Difference]: Finished difference Result 20032 states and 27482 transitions. [2023-12-20 17:57:17,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:57:17,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 324 [2023-12-20 17:57:17,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:57:17,884 INFO L225 Difference]: With dead ends: 20032 [2023-12-20 17:57:17,884 INFO L226 Difference]: Without dead ends: 11366 [2023-12-20 17:57:17,894 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 17:57:17,895 INFO L413 NwaCegarLoop]: 1773 mSDtfsCounter, 1151 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 5716 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 5724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:57:17,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 1951 Invalid, 5724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 5716 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-20 17:57:17,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11366 states. [2023-12-20 17:57:18,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11366 to 11366. [2023-12-20 17:57:18,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11366 states, 11365 states have (on average 1.3274967003959526) internal successors, (15087), 11365 states have internal predecessors, (15087), 0 states have call successors, (0), 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 17:57:18,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11366 states to 11366 states and 15087 transitions. [2023-12-20 17:57:18,033 INFO L78 Accepts]: Start accepts. Automaton has 11366 states and 15087 transitions. Word has length 324 [2023-12-20 17:57:18,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:57:18,033 INFO L495 AbstractCegarLoop]: Abstraction has 11366 states and 15087 transitions. [2023-12-20 17:57:18,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 17:57:18,033 INFO L276 IsEmpty]: Start isEmpty. Operand 11366 states and 15087 transitions. [2023-12-20 17:57:18,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-20 17:57:18,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:57:18,038 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:57:18,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 17:57:18,038 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:57:18,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:57:18,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1083934359, now seen corresponding path program 1 times [2023-12-20 17:57:18,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:57:18,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662933406] [2023-12-20 17:57:18,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:57:18,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:57:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:57:18,718 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:57:18,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:57:18,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662933406] [2023-12-20 17:57:18,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662933406] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:57:18,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500404137] [2023-12-20 17:57:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:57:18,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:57:18,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:57:18,721 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 17:57:18,726 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 17:57:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:57:18,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:57:18,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:57:19,420 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-20 17:57:19,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:57:19,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500404137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:57:19,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:57:19,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-20 17:57:19,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082574925] [2023-12-20 17:57:19,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:57:19,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:57:19,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:57:19,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:57:19,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:57:19,426 INFO L87 Difference]: Start difference. First operand 11366 states and 15087 transitions. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 2 states have internal predecessors, (490), 0 states have call successors, (0), 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 17:57:24,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:57:24,255 INFO L93 Difference]: Finished difference Result 24132 states and 33156 transitions. [2023-12-20 17:57:24,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:57:24,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 2 states have internal predecessors, (490), 0 states have call successors, (0), 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 509 [2023-12-20 17:57:24,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:57:24,285 INFO L225 Difference]: With dead ends: 24132 [2023-12-20 17:57:24,285 INFO L226 Difference]: Without dead ends: 15497 [2023-12-20 17:57:24,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:57:24,298 INFO L413 NwaCegarLoop]: 1205 mSDtfsCounter, 1058 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4577 mSolverCounterSat, 809 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 5386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 809 IncrementalHoareTripleChecker+Valid, 4577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:57:24,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 1382 Invalid, 5386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [809 Valid, 4577 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-20 17:57:24,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15497 states. [2023-12-20 17:57:24,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15497 to 15495. [2023-12-20 17:57:24,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15495 states, 15494 states have (on average 1.2934038982832063) internal successors, (20040), 15494 states have internal predecessors, (20040), 0 states have call successors, (0), 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 17:57:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15495 states to 15495 states and 20040 transitions. [2023-12-20 17:57:24,491 INFO L78 Accepts]: Start accepts. Automaton has 15495 states and 20040 transitions. Word has length 509 [2023-12-20 17:57:24,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:57:24,492 INFO L495 AbstractCegarLoop]: Abstraction has 15495 states and 20040 transitions. [2023-12-20 17:57:24,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 2 states have internal predecessors, (490), 0 states have call successors, (0), 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 17:57:24,492 INFO L276 IsEmpty]: Start isEmpty. Operand 15495 states and 20040 transitions. [2023-12-20 17:57:24,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2023-12-20 17:57:24,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:57:24,498 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:57:24,506 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 17:57:24,703 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,SelfDestructingSolverStorable5 [2023-12-20 17:57:24,704 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:57:24,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:57:24,704 INFO L85 PathProgramCache]: Analyzing trace with hash -753510174, now seen corresponding path program 1 times [2023-12-20 17:57:24,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:57:24,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697295497] [2023-12-20 17:57:24,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:57:24,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:57:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:57:25,382 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 63 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:57:25,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:57:25,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697295497] [2023-12-20 17:57:25,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697295497] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:57:25,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031460859] [2023-12-20 17:57:25,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:57:25,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:57:25,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:57:25,383 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 17:57:25,412 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 17:57:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:57:25,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:57:25,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:57:25,607 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:57:25,607 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:57:25,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031460859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:57:25,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:57:25,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-20 17:57:25,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839456654] [2023-12-20 17:57:25,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:57:25,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:57:25,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:57:25,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:57:25,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:57:25,609 INFO L87 Difference]: Start difference. First operand 15495 states and 20040 transitions. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 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 17:57:30,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:57:30,877 INFO L93 Difference]: Finished difference Result 40539 states and 53990 transitions. [2023-12-20 17:57:30,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:57:30,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 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 578 [2023-12-20 17:57:30,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:57:30,928 INFO L225 Difference]: With dead ends: 40539 [2023-12-20 17:57:30,929 INFO L226 Difference]: Without dead ends: 27775 [2023-12-20 17:57:30,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:57:30,948 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 2530 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4054 mSolverCounterSat, 1472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2530 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 5526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1472 IncrementalHoareTripleChecker+Valid, 4054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:57:30,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2530 Valid, 812 Invalid, 5526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1472 Valid, 4054 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-20 17:57:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27775 states. [2023-12-20 17:57:31,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27775 to 27771. [2023-12-20 17:57:31,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27771 states, 27770 states have (on average 1.2915376305365502) internal successors, (35866), 27770 states have internal predecessors, (35866), 0 states have call successors, (0), 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 17:57:31,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27771 states to 27771 states and 35866 transitions. [2023-12-20 17:57:31,232 INFO L78 Accepts]: Start accepts. Automaton has 27771 states and 35866 transitions. Word has length 578 [2023-12-20 17:57:31,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:57:31,233 INFO L495 AbstractCegarLoop]: Abstraction has 27771 states and 35866 transitions. [2023-12-20 17:57:31,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 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 17:57:31,233 INFO L276 IsEmpty]: Start isEmpty. Operand 27771 states and 35866 transitions. [2023-12-20 17:57:31,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-12-20 17:57:31,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:57:31,239 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:57:31,246 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 17:57:31,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-20 17:57:31,444 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:57:31,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:57:31,445 INFO L85 PathProgramCache]: Analyzing trace with hash -855727717, now seen corresponding path program 1 times [2023-12-20 17:57:31,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:57:31,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109619970] [2023-12-20 17:57:31,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:57:31,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:57:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:57:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-20 17:57:31,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:57:31,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109619970] [2023-12-20 17:57:31,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109619970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:57:31,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:57:31,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:57:31,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103102105] [2023-12-20 17:57:31,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:57:31,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:57:31,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:57:31,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:57:31,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:57:31,847 INFO L87 Difference]: Start difference. First operand 27771 states and 35866 transitions. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 2 states have internal predecessors, (511), 0 states have call successors, (0), 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 17:57:36,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:57:36,537 INFO L93 Difference]: Finished difference Result 58284 states and 75895 transitions. [2023-12-20 17:57:36,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:57:36,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 2 states have internal predecessors, (511), 0 states have call successors, (0), 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 583 [2023-12-20 17:57:36,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:57:36,587 INFO L225 Difference]: With dead ends: 58284 [2023-12-20 17:57:36,588 INFO L226 Difference]: Without dead ends: 33244 [2023-12-20 17:57:36,615 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 17:57:36,616 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 1383 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 3926 mSolverCounterSat, 1660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 5586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1660 IncrementalHoareTripleChecker+Valid, 3926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:57:36,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 731 Invalid, 5586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1660 Valid, 3926 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-20 17:57:36,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33244 states. [2023-12-20 17:57:36,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33244 to 33234. [2023-12-20 17:57:36,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33234 states, 33233 states have (on average 1.2287786236572082) internal successors, (40836), 33233 states have internal predecessors, (40836), 0 states have call successors, (0), 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 17:57:36,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33234 states to 33234 states and 40836 transitions. [2023-12-20 17:57:36,963 INFO L78 Accepts]: Start accepts. Automaton has 33234 states and 40836 transitions. Word has length 583 [2023-12-20 17:57:36,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:57:36,963 INFO L495 AbstractCegarLoop]: Abstraction has 33234 states and 40836 transitions. [2023-12-20 17:57:36,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 2 states have internal predecessors, (511), 0 states have call successors, (0), 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 17:57:36,964 INFO L276 IsEmpty]: Start isEmpty. Operand 33234 states and 40836 transitions. [2023-12-20 17:57:36,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2023-12-20 17:57:36,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:57:36,971 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:57:36,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 17:57:36,972 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:57:36,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:57:36,972 INFO L85 PathProgramCache]: Analyzing trace with hash -687794865, now seen corresponding path program 1 times [2023-12-20 17:57:36,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:57:36,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59316908] [2023-12-20 17:57:36,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:57:36,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:57:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:57:37,362 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-20 17:57:37,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:57:37,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59316908] [2023-12-20 17:57:37,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59316908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:57:37,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:57:37,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:57:37,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391534155] [2023-12-20 17:57:37,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:57:37,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:57:37,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:57:37,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:57:37,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:57:37,365 INFO L87 Difference]: Start difference. First operand 33234 states and 40836 transitions. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 2 states have internal predecessors, (511), 0 states have call successors, (0), 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 17:57:43,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:57:43,244 INFO L93 Difference]: Finished difference Result 91259 states and 113480 transitions. [2023-12-20 17:57:43,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:57:43,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 2 states have internal predecessors, (511), 0 states have call successors, (0), 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 600 [2023-12-20 17:57:43,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:57:43,320 INFO L225 Difference]: With dead ends: 91259 [2023-12-20 17:57:43,320 INFO L226 Difference]: Without dead ends: 60756 [2023-12-20 17:57:43,347 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 17:57:43,348 INFO L413 NwaCegarLoop]: 1745 mSDtfsCounter, 1350 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 4281 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 5711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:57:43,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 2011 Invalid, 5711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4281 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-20 17:57:43,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60756 states. [2023-12-20 17:57:44,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60756 to 55275. [2023-12-20 17:57:44,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55275 states, 55274 states have (on average 1.1672033867641205) internal successors, (64516), 55274 states have internal predecessors, (64516), 0 states have call successors, (0), 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 17:57:44,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55275 states to 55275 states and 64516 transitions. [2023-12-20 17:57:44,189 INFO L78 Accepts]: Start accepts. Automaton has 55275 states and 64516 transitions. Word has length 600 [2023-12-20 17:57:44,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:57:44,189 INFO L495 AbstractCegarLoop]: Abstraction has 55275 states and 64516 transitions. [2023-12-20 17:57:44,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 2 states have internal predecessors, (511), 0 states have call successors, (0), 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 17:57:44,190 INFO L276 IsEmpty]: Start isEmpty. Operand 55275 states and 64516 transitions. [2023-12-20 17:57:44,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2023-12-20 17:57:44,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:57:44,194 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:57:44,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 17:57:44,195 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:57:44,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:57:44,197 INFO L85 PathProgramCache]: Analyzing trace with hash -439275589, now seen corresponding path program 1 times [2023-12-20 17:57:44,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:57:44,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626921290] [2023-12-20 17:57:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:57:44,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:57:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:57:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 41 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:57:45,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:57:45,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626921290] [2023-12-20 17:57:45,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626921290] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:57:45,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347332119] [2023-12-20 17:57:45,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:57:45,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:57:45,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:57:45,835 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 17:57:45,840 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 17:57:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:57:46,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:57:46,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:57:46,076 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-12-20 17:57:46,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:57:46,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347332119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:57:46,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:57:46,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-20 17:57:46,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421811779] [2023-12-20 17:57:46,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:57:46,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:57:46,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:57:46,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:57:46,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:57:46,078 INFO L87 Difference]: Start difference. First operand 55275 states and 64516 transitions. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 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 17:57:50,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:57:50,950 INFO L93 Difference]: Finished difference Result 110552 states and 129118 transitions. [2023-12-20 17:57:50,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:57:50,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 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 716 [2023-12-20 17:57:50,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:57:51,018 INFO L225 Difference]: With dead ends: 110552 [2023-12-20 17:57:51,018 INFO L226 Difference]: Without dead ends: 58008 [2023-12-20 17:57:51,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:57:51,045 INFO L413 NwaCegarLoop]: 2901 mSDtfsCounter, 1583 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 3679 mSolverCounterSat, 1466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 5145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1466 IncrementalHoareTripleChecker+Valid, 3679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:57:51,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 3082 Invalid, 5145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1466 Valid, 3679 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-20 17:57:51,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58008 states. [2023-12-20 17:57:51,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58008 to 58002. [2023-12-20 17:57:51,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58002 states, 58001 states have (on average 1.1169117773831485) internal successors, (64782), 58001 states have internal predecessors, (64782), 0 states have call successors, (0), 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 17:57:51,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58002 states to 58002 states and 64782 transitions. [2023-12-20 17:57:51,567 INFO L78 Accepts]: Start accepts. Automaton has 58002 states and 64782 transitions. Word has length 716 [2023-12-20 17:57:51,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:57:51,568 INFO L495 AbstractCegarLoop]: Abstraction has 58002 states and 64782 transitions. [2023-12-20 17:57:51,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 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 17:57:51,568 INFO L276 IsEmpty]: Start isEmpty. Operand 58002 states and 64782 transitions. [2023-12-20 17:57:51,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-12-20 17:57:51,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:57:51,573 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:57:51,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 17:57:51,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:57:51,780 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:57:51,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:57:51,781 INFO L85 PathProgramCache]: Analyzing trace with hash -114049895, now seen corresponding path program 1 times [2023-12-20 17:57:51,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:57:51,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132860181] [2023-12-20 17:57:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:57:51,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:57:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:57:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 41 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:57:53,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:57:53,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132860181] [2023-12-20 17:57:53,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132860181] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:57:53,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715470327] [2023-12-20 17:57:53,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:57:53,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:57:53,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:57:53,504 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 17:57:53,511 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 17:57:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:57:53,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:57:53,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:57:53,748 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-12-20 17:57:53,749 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:57:53,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715470327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:57:53,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:57:53,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-20 17:57:53,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883686932] [2023-12-20 17:57:53,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:57:53,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:57:53,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:57:53,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:57:53,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:57:53,751 INFO L87 Difference]: Start difference. First operand 58002 states and 64782 transitions. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 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 17:57:59,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:57:59,194 INFO L93 Difference]: Finished difference Result 129685 states and 145980 transitions. [2023-12-20 17:57:59,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:57:59,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 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 728 [2023-12-20 17:57:59,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:57:59,269 INFO L225 Difference]: With dead ends: 129685 [2023-12-20 17:57:59,269 INFO L226 Difference]: Without dead ends: 74414 [2023-12-20 17:57:59,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:57:59,299 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 1581 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 4915 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 5638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 4915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:57:59,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 1436 Invalid, 5638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 4915 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-20 17:57:59,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74414 states. [2023-12-20 17:57:59,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74414 to 70303. [2023-12-20 17:58:00,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70303 states, 70302 states have (on average 1.1228699041279053) internal successors, (78940), 70302 states have internal predecessors, (78940), 0 states have call successors, (0), 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 17:58:00,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70303 states to 70303 states and 78940 transitions. [2023-12-20 17:58:00,109 INFO L78 Accepts]: Start accepts. Automaton has 70303 states and 78940 transitions. Word has length 728 [2023-12-20 17:58:00,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:58:00,110 INFO L495 AbstractCegarLoop]: Abstraction has 70303 states and 78940 transitions. [2023-12-20 17:58:00,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 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 17:58:00,110 INFO L276 IsEmpty]: Start isEmpty. Operand 70303 states and 78940 transitions. [2023-12-20 17:58:00,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2023-12-20 17:58:00,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:58:00,132 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:58:00,160 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 17:58:00,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:58:00,333 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:58:00,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:58:00,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1139580807, now seen corresponding path program 1 times [2023-12-20 17:58:00,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:58:00,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385425799] [2023-12-20 17:58:00,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:58:00,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:58:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:58:00,896 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2023-12-20 17:58:00,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:58:00,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385425799] [2023-12-20 17:58:00,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385425799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:58:00,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:58:00,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:58:00,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975080552] [2023-12-20 17:58:00,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:58:00,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:58:00,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:58:00,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:58:00,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:58:00,900 INFO L87 Difference]: Start difference. First operand 70303 states and 78940 transitions. Second operand has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 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 17:58:10,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:58:10,760 INFO L93 Difference]: Finished difference Result 226801 states and 258050 transitions. [2023-12-20 17:58:10,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:58:10,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 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 17:58:10,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:58:10,945 INFO L225 Difference]: With dead ends: 226801 [2023-12-20 17:58:10,945 INFO L226 Difference]: Without dead ends: 159229 [2023-12-20 17:58:10,975 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 17:58:10,976 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 3318 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 8808 mSolverCounterSat, 2931 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3318 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 11739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2931 IncrementalHoareTripleChecker+Valid, 8808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:58:10,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3318 Valid, 1229 Invalid, 11739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2931 Valid, 8808 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-12-20 17:58:11,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159229 states. [2023-12-20 17:58:12,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159229 to 152297. [2023-12-20 17:58:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152297 states, 152296 states have (on average 1.11565635341703) internal successors, (169910), 152296 states have internal predecessors, (169910), 0 states have call successors, (0), 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 17:58:12,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152297 states to 152297 states and 169910 transitions. [2023-12-20 17:58:12,676 INFO L78 Accepts]: Start accepts. Automaton has 152297 states and 169910 transitions. Word has length 806 [2023-12-20 17:58:12,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:58:12,677 INFO L495 AbstractCegarLoop]: Abstraction has 152297 states and 169910 transitions. [2023-12-20 17:58:12,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 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 17:58:12,677 INFO L276 IsEmpty]: Start isEmpty. Operand 152297 states and 169910 transitions. [2023-12-20 17:58:12,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2023-12-20 17:58:12,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:58:12,716 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:58:12,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 17:58:12,717 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:58:12,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:58:12,717 INFO L85 PathProgramCache]: Analyzing trace with hash -2094232581, now seen corresponding path program 1 times [2023-12-20 17:58:12,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:58:12,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186975064] [2023-12-20 17:58:12,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:58:12,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:58:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:58:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-12-20 17:58:13,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:58:13,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186975064] [2023-12-20 17:58:13,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186975064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:58:13,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:58:13,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:58:13,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989898523] [2023-12-20 17:58:13,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:58:13,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:58:13,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:58:13,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:58:13,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:58:13,660 INFO L87 Difference]: Start difference. First operand 152297 states and 169910 transitions. Second operand has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 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 17:58:19,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:58:19,893 INFO L93 Difference]: Finished difference Result 379735 states and 426211 transitions. [2023-12-20 17:58:19,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:58:19,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 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 882 [2023-12-20 17:58:19,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:58:20,194 INFO L225 Difference]: With dead ends: 379735 [2023-12-20 17:58:20,194 INFO L226 Difference]: Without dead ends: 230169 [2023-12-20 17:58:20,458 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 17:58:20,471 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 1716 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 4233 mSolverCounterSat, 2343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 6576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2343 IncrementalHoareTripleChecker+Valid, 4233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:58:20,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 597 Invalid, 6576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2343 Valid, 4233 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-20 17:58:20,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230169 states. [2023-12-20 17:58:22,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230169 to 209595. [2023-12-20 17:58:22,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209595 states, 209594 states have (on average 1.1301039151884118) internal successors, (236863), 209594 states have internal predecessors, (236863), 0 states have call successors, (0), 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 17:58:23,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209595 states to 209595 states and 236863 transitions. [2023-12-20 17:58:23,002 INFO L78 Accepts]: Start accepts. Automaton has 209595 states and 236863 transitions. Word has length 882 [2023-12-20 17:58:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:58:23,003 INFO L495 AbstractCegarLoop]: Abstraction has 209595 states and 236863 transitions. [2023-12-20 17:58:23,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 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 17:58:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 209595 states and 236863 transitions. [2023-12-20 17:58:23,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2023-12-20 17:58:23,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:58:23,152 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:58:23,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 17:58:23,152 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:58:23,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:58:23,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1953291532, now seen corresponding path program 1 times [2023-12-20 17:58:23,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:58:23,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428895764] [2023-12-20 17:58:23,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:58:23,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:58:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:58:23,732 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 580 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2023-12-20 17:58:23,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:58:23,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428895764] [2023-12-20 17:58:23,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428895764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:58:23,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:58:23,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:58:23,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103033697] [2023-12-20 17:58:23,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:58:23,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:58:23,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:58:23,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:58:23,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:58:23,734 INFO L87 Difference]: Start difference. First operand 209595 states and 236863 transitions. Second operand has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 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 17:58:30,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:58:30,849 INFO L93 Difference]: Finished difference Result 505231 states and 576385 transitions. [2023-12-20 17:58:30,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:58:30,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 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 1017 [2023-12-20 17:58:30,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:58:31,434 INFO L225 Difference]: With dead ends: 505231 [2023-12-20 17:58:31,434 INFO L226 Difference]: Without dead ends: 298367 [2023-12-20 17:58:31,468 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 17:58:31,468 INFO L413 NwaCegarLoop]: 1038 mSDtfsCounter, 1660 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4414 mSolverCounterSat, 1547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1660 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 5961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1547 IncrementalHoareTripleChecker+Valid, 4414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:58:31,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1660 Valid, 1153 Invalid, 5961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1547 Valid, 4414 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-20 17:58:31,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298367 states. [2023-12-20 17:58:34,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298367 to 287441. [2023-12-20 17:58:34,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287441 states, 287440 states have (on average 1.1323998051767326) internal successors, (325497), 287440 states have internal predecessors, (325497), 0 states have call successors, (0), 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 17:58:35,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287441 states to 287441 states and 325497 transitions. [2023-12-20 17:58:35,133 INFO L78 Accepts]: Start accepts. Automaton has 287441 states and 325497 transitions. Word has length 1017 [2023-12-20 17:58:35,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:58:35,134 INFO L495 AbstractCegarLoop]: Abstraction has 287441 states and 325497 transitions. [2023-12-20 17:58:35,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 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 17:58:35,134 INFO L276 IsEmpty]: Start isEmpty. Operand 287441 states and 325497 transitions. [2023-12-20 17:58:35,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1120 [2023-12-20 17:58:35,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:58:35,153 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:58:35,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 17:58:35,154 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:58:35,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:58:35,154 INFO L85 PathProgramCache]: Analyzing trace with hash -793971104, now seen corresponding path program 1 times [2023-12-20 17:58:35,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:58:35,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586471079] [2023-12-20 17:58:35,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:58:35,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:58:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:58:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1094 backedges. 768 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2023-12-20 17:58:35,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:58:35,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586471079] [2023-12-20 17:58:35,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586471079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:58:35,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:58:35,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:58:35,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626401898] [2023-12-20 17:58:35,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:58:35,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:58:35,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:58:35,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:58:35,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:58:35,983 INFO L87 Difference]: Start difference. First operand 287441 states and 325497 transitions. Second operand has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 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 17:58:43,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:58:43,525 INFO L93 Difference]: Finished difference Result 675980 states and 765420 transitions. [2023-12-20 17:58:43,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:58:43,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 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 1119 [2023-12-20 17:58:43,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:58:44,048 INFO L225 Difference]: With dead ends: 675980 [2023-12-20 17:58:44,048 INFO L226 Difference]: Without dead ends: 388539 [2023-12-20 17:58:44,390 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 17:58:44,390 INFO L413 NwaCegarLoop]: 2981 mSDtfsCounter, 1373 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 4934 mSolverCounterSat, 909 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 3145 SdHoareTripleChecker+Invalid, 5843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 909 IncrementalHoareTripleChecker+Valid, 4934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:58:44,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 3145 Invalid, 5843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [909 Valid, 4934 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-20 17:58:44,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388539 states. [2023-12-20 17:58:48,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388539 to 384370. [2023-12-20 17:58:48,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384370 states, 384369 states have (on average 1.110040091682732) internal successors, (426665), 384369 states have internal predecessors, (426665), 0 states have call successors, (0), 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 17:58:49,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384370 states to 384370 states and 426665 transitions. [2023-12-20 17:58:49,113 INFO L78 Accepts]: Start accepts. Automaton has 384370 states and 426665 transitions. Word has length 1119 [2023-12-20 17:58:49,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:58:49,114 INFO L495 AbstractCegarLoop]: Abstraction has 384370 states and 426665 transitions. [2023-12-20 17:58:49,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 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 17:58:49,114 INFO L276 IsEmpty]: Start isEmpty. Operand 384370 states and 426665 transitions. [2023-12-20 17:58:49,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1134 [2023-12-20 17:58:49,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:58:49,136 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:58:49,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 17:58:49,136 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:58:49,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:58:49,137 INFO L85 PathProgramCache]: Analyzing trace with hash 309709859, now seen corresponding path program 1 times [2023-12-20 17:58:49,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:58:49,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983766783] [2023-12-20 17:58:49,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:58:49,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:58:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:58:49,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 810 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2023-12-20 17:58:49,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:58:49,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983766783] [2023-12-20 17:58:49,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983766783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:58:49,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:58:49,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:58:49,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414925980] [2023-12-20 17:58:49,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:58:49,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:58:49,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:58:49,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:58:49,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:58:49,904 INFO L87 Difference]: Start difference. First operand 384370 states and 426665 transitions. Second operand has 3 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 0 states have call successors, (0), 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 17:58:56,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:58:56,578 INFO L93 Difference]: Finished difference Result 766019 states and 850608 transitions. [2023-12-20 17:58:56,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:58:56,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 0 states have call successors, (0), 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 1133 [2023-12-20 17:58:56,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:58:57,167 INFO L225 Difference]: With dead ends: 766019 [2023-12-20 17:58:57,168 INFO L226 Difference]: Without dead ends: 384380 [2023-12-20 17:58:57,309 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 17:58:57,309 INFO L413 NwaCegarLoop]: 2856 mSDtfsCounter, 1326 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 4412 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 4805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 4412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:58:57,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1326 Valid, 3048 Invalid, 4805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 4412 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-20 17:58:57,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384380 states. [2023-12-20 17:59:01,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384380 to 366624. [2023-12-20 17:59:01,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366624 states, 366623 states have (on average 1.0991890852456065) internal successors, (402988), 366623 states have internal predecessors, (402988), 0 states have call successors, (0), 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 17:59:02,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366624 states to 366624 states and 402988 transitions. [2023-12-20 17:59:02,240 INFO L78 Accepts]: Start accepts. Automaton has 366624 states and 402988 transitions. Word has length 1133 [2023-12-20 17:59:02,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:59:02,241 INFO L495 AbstractCegarLoop]: Abstraction has 366624 states and 402988 transitions. [2023-12-20 17:59:02,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 0 states have call successors, (0), 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 17:59:02,241 INFO L276 IsEmpty]: Start isEmpty. Operand 366624 states and 402988 transitions. [2023-12-20 17:59:02,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1150 [2023-12-20 17:59:02,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:59:02,262 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:59:02,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 17:59:02,262 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:59:02,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:59:02,263 INFO L85 PathProgramCache]: Analyzing trace with hash -2094393742, now seen corresponding path program 1 times [2023-12-20 17:59:02,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:59:02,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890503303] [2023-12-20 17:59:02,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:59:02,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:59:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:59:02,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 617 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2023-12-20 17:59:02,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:59:02,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890503303] [2023-12-20 17:59:02,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890503303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:59:02,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:59:02,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:59:02,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556964563] [2023-12-20 17:59:02,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:59:02,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:59:02,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:59:02,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:59:02,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:59:02,930 INFO L87 Difference]: Start difference. First operand 366624 states and 402988 transitions. Second operand has 3 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 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 17:59:11,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:59:11,033 INFO L93 Difference]: Finished difference Result 801498 states and 883818 transitions. [2023-12-20 17:59:11,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:59:11,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 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 1149 [2023-12-20 17:59:11,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:59:12,065 INFO L225 Difference]: With dead ends: 801498 [2023-12-20 17:59:12,065 INFO L226 Difference]: Without dead ends: 437605 [2023-12-20 17:59:12,268 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 17:59:12,284 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 1658 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 4171 mSolverCounterSat, 1961 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 6132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1961 IncrementalHoareTripleChecker+Valid, 4171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:59:12,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1658 Valid, 892 Invalid, 6132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1961 Valid, 4171 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-20 17:59:12,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437605 states. [2023-12-20 17:59:16,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437605 to 351563. [2023-12-20 17:59:17,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351563 states, 351562 states have (on average 1.0989441407205558) internal successors, (386347), 351562 states have internal predecessors, (386347), 0 states have call successors, (0), 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 17:59:17,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351563 states to 351563 states and 386347 transitions. [2023-12-20 17:59:17,808 INFO L78 Accepts]: Start accepts. Automaton has 351563 states and 386347 transitions. Word has length 1149 [2023-12-20 17:59:17,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:59:17,809 INFO L495 AbstractCegarLoop]: Abstraction has 351563 states and 386347 transitions. [2023-12-20 17:59:17,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 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 17:59:17,809 INFO L276 IsEmpty]: Start isEmpty. Operand 351563 states and 386347 transitions. [2023-12-20 17:59:17,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1218 [2023-12-20 17:59:17,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:59:17,833 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:59:17,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 17:59:17,833 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:59:17,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:59:17,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2093532602, now seen corresponding path program 1 times [2023-12-20 17:59:17,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:59:17,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871283761] [2023-12-20 17:59:17,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:59:17,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:59:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:59:18,927 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2023-12-20 17:59:18,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:59:18,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871283761] [2023-12-20 17:59:18,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871283761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:59:18,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:59:18,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:59:18,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734376902] [2023-12-20 17:59:18,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:59:18,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:59:18,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:59:18,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:59:18,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:59:18,929 INFO L87 Difference]: Start difference. First operand 351563 states and 386347 transitions. Second operand has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 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 17:59:26,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:59:26,470 INFO L93 Difference]: Finished difference Result 742757 states and 818639 transitions. [2023-12-20 17:59:26,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:59:26,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 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 1217 [2023-12-20 17:59:26,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:59:27,326 INFO L225 Difference]: With dead ends: 742757 [2023-12-20 17:59:27,326 INFO L226 Difference]: Without dead ends: 393925 [2023-12-20 17:59:27,440 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 17:59:27,441 INFO L413 NwaCegarLoop]: 3035 mSDtfsCounter, 1404 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 4708 mSolverCounterSat, 941 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 3296 SdHoareTripleChecker+Invalid, 5649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 941 IncrementalHoareTripleChecker+Valid, 4708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:59:27,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 3296 Invalid, 5649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [941 Valid, 4708 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-20 17:59:27,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393925 states. [2023-12-20 17:59:31,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393925 to 385711. [2023-12-20 17:59:31,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385711 states, 385710 states have (on average 1.0917087967644086) internal successors, (421083), 385710 states have internal predecessors, (421083), 0 states have call successors, (0), 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 17:59:32,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385711 states to 385711 states and 421083 transitions. [2023-12-20 17:59:32,257 INFO L78 Accepts]: Start accepts. Automaton has 385711 states and 421083 transitions. Word has length 1217 [2023-12-20 17:59:32,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:59:32,257 INFO L495 AbstractCegarLoop]: Abstraction has 385711 states and 421083 transitions. [2023-12-20 17:59:32,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 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 17:59:32,258 INFO L276 IsEmpty]: Start isEmpty. Operand 385711 states and 421083 transitions. [2023-12-20 17:59:32,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1224 [2023-12-20 17:59:32,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:59:32,279 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:59:32,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 17:59:32,279 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:59:32,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:59:32,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1669042330, now seen corresponding path program 1 times [2023-12-20 17:59:32,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:59:32,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550897368] [2023-12-20 17:59:32,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:59:32,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:59:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:59:32,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 813 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-12-20 17:59:32,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:59:32,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550897368] [2023-12-20 17:59:32,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550897368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:59:32,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:59:32,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:59:32,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767546715] [2023-12-20 17:59:32,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:59:32,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:59:32,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:59:32,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:59:32,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:59:32,979 INFO L87 Difference]: Start difference. First operand 385711 states and 421083 transitions. Second operand has 4 states, 4 states have (on average 214.5) internal successors, (858), 4 states have internal predecessors, (858), 0 states have call successors, (0), 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 17:59:43,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:59:43,493 INFO L93 Difference]: Finished difference Result 860156 states and 939447 transitions. [2023-12-20 17:59:43,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:59:43,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 214.5) internal successors, (858), 4 states have internal predecessors, (858), 0 states have call successors, (0), 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 1223 [2023-12-20 17:59:43,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:59:44,478 INFO L225 Difference]: With dead ends: 860156 [2023-12-20 17:59:44,478 INFO L226 Difference]: Without dead ends: 477176 [2023-12-20 17:59:44,617 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 17:59:44,618 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 4322 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 5891 mSolverCounterSat, 3524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4322 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 9415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3524 IncrementalHoareTripleChecker+Valid, 5891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:59:44,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4322 Valid, 1080 Invalid, 9415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3524 Valid, 5891 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-20 17:59:44,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477176 states. [2023-12-20 17:59:49,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477176 to 471709. [2023-12-20 17:59:49,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471709 states, 471708 states have (on average 1.080793626565587) internal successors, (509819), 471708 states have internal predecessors, (509819), 0 states have call successors, (0), 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 17:59:50,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471709 states to 471709 states and 509819 transitions. [2023-12-20 17:59:50,297 INFO L78 Accepts]: Start accepts. Automaton has 471709 states and 509819 transitions. Word has length 1223 [2023-12-20 17:59:50,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:59:50,298 INFO L495 AbstractCegarLoop]: Abstraction has 471709 states and 509819 transitions. [2023-12-20 17:59:50,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 214.5) internal successors, (858), 4 states have internal predecessors, (858), 0 states have call successors, (0), 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 17:59:50,298 INFO L276 IsEmpty]: Start isEmpty. Operand 471709 states and 509819 transitions. [2023-12-20 17:59:50,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1392 [2023-12-20 17:59:50,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:59:50,328 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:59:50,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 17:59:50,328 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:59:50,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:59:50,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1348563435, now seen corresponding path program 1 times [2023-12-20 17:59:50,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:59:50,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116185889] [2023-12-20 17:59:50,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:59:50,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:59:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:59:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 573 proven. 485 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 17:59:52,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:59:52,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116185889] [2023-12-20 17:59:52,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116185889] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:59:52,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909371574] [2023-12-20 17:59:52,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:59:52,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:59:52,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:59:52,895 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 17:59:52,896 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 17:59:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:59:53,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 17:59:53,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:59:55,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 1058 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 17:59:55,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:59:55,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909371574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:59:55,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:59:55,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-20 17:59:55,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115281636] [2023-12-20 17:59:55,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:59:55,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:59:55,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:59:55,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:59:55,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:59:55,022 INFO L87 Difference]: Start difference. First operand 471709 states and 509819 transitions. Second operand has 4 states, 4 states have (on average 342.75) internal successors, (1371), 3 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)