/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/Problem13_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 17:08:01,103 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 17:08:01,172 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 17:08:01,176 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 17:08:01,177 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 17:08:01,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 17:08:01,199 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 17:08:01,199 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 17:08:01,200 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 17:08:01,202 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 17:08:01,202 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 17:08:01,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 17:08:01,203 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 17:08:01,213 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 17:08:01,213 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 17:08:01,213 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 17:08:01,213 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 17:08:01,213 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 17:08:01,213 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 17:08:01,214 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 17:08:01,214 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 17:08:01,215 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 17:08:01,215 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 17:08:01,215 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 17:08:01,215 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 17:08:01,215 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 17:08:01,215 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 17:08:01,216 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 17:08:01,216 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 17:08:01,216 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 17:08:01,217 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 17:08:01,217 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 17:08:01,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:08:01,217 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 17:08:01,217 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 17:08:01,217 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 17:08:01,218 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 17:08:01,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 17:08:01,218 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 17:08:01,218 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 17:08:01,218 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 17:08:01,218 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 17:08:01,218 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 17:08:01,218 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 17:08:01,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 17:08:01,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 17:08:01,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 17:08:01,437 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 17:08:01,438 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 17:08:01,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label47.c [2023-12-20 17:08:02,500 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 17:08:02,877 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 17:08:02,878 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label47.c [2023-12-20 17:08:02,910 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c58dbb72/9e434e72730f4b0babf01e449c60b06b/FLAG8094d3240 [2023-12-20 17:08:02,922 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c58dbb72/9e434e72730f4b0babf01e449c60b06b [2023-12-20 17:08:02,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 17:08:02,925 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 17:08:02,926 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 17:08:02,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 17:08:02,930 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 17:08:02,930 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:08:02" (1/1) ... [2023-12-20 17:08:02,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc1fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:02, skipping insertion in model container [2023-12-20 17:08:02,931 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:08:02" (1/1) ... [2023-12-20 17:08:03,033 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 17:08:03,261 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/Problem13_label47.c[6189,6202] [2023-12-20 17:08:03,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:08:03,904 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 17:08:03,927 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/Problem13_label47.c[6189,6202] [2023-12-20 17:08:04,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:08:04,291 INFO L206 MainTranslator]: Completed translation [2023-12-20 17:08:04,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:04 WrapperNode [2023-12-20 17:08:04,292 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 17:08:04,293 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 17:08:04,293 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 17:08:04,293 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 17:08:04,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:04" (1/1) ... [2023-12-20 17:08:04,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:04" (1/1) ... [2023-12-20 17:08:04,687 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-20 17:08:04,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 17:08:04,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 17:08:04,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 17:08:04,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 17:08:04,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:04" (1/1) ... [2023-12-20 17:08:04,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:04" (1/1) ... [2023-12-20 17:08:04,934 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:04" (1/1) ... [2023-12-20 17:08:05,192 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 17:08:05,192 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:04" (1/1) ... [2023-12-20 17:08:05,192 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:04" (1/1) ... [2023-12-20 17:08:05,414 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:04" (1/1) ... [2023-12-20 17:08:05,440 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:04" (1/1) ... [2023-12-20 17:08:05,491 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:04" (1/1) ... [2023-12-20 17:08:05,512 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:04" (1/1) ... [2023-12-20 17:08:05,574 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 17:08:05,575 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 17:08:05,575 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 17:08:05,575 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 17:08:05,577 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:04" (1/1) ... [2023-12-20 17:08:05,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:08:05,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:08:05,600 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 17:08:05,684 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 17:08:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 17:08:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 17:08:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 17:08:05,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 17:08:05,750 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 17:08:05,752 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 17:08:09,319 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 17:08:09,356 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 17:08:09,357 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 17:08:09,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:08:09 BoogieIcfgContainer [2023-12-20 17:08:09,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 17:08:09,359 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 17:08:09,359 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 17:08:09,361 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 17:08:09,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:08:02" (1/3) ... [2023-12-20 17:08:09,362 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49123c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:08:09, skipping insertion in model container [2023-12-20 17:08:09,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:04" (2/3) ... [2023-12-20 17:08:09,362 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49123c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:08:09, skipping insertion in model container [2023-12-20 17:08:09,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:08:09" (3/3) ... [2023-12-20 17:08:09,363 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label47.c [2023-12-20 17:08:09,375 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 17:08:09,375 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 17:08:09,419 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 17:08:09,423 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;@3ffd372f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 17:08:09,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 17:08:09,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states 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 17:08:09,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-20 17:08:09,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:09,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:09,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:09,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:09,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1954279942, now seen corresponding path program 1 times [2023-12-20 17:08:09,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:09,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949844010] [2023-12-20 17:08:09,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:09,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:09,566 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 17:08:09,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:09,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949844010] [2023-12-20 17:08:09,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949844010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:09,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:09,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:08:09,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545703154] [2023-12-20 17:08:09,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:09,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 17:08:09,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:09,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 17:08:09,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:08:09,603 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 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 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 17:08:09,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:09,665 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-20 17:08:09,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 17:08:09,678 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2023-12-20 17:08:09,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:09,696 INFO L225 Difference]: With dead ends: 2071 [2023-12-20 17:08:09,697 INFO L226 Difference]: Without dead ends: 1034 [2023-12-20 17:08:09,703 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 17:08:09,706 INFO L413 NwaCegarLoop]: 1876 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, 1876 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 17:08:09,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 17:08:09,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-20 17:08:09,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-20 17:08:09,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states 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 17:08:09,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-20 17:08:09,776 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 42 [2023-12-20 17:08:09,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:09,777 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-20 17:08:09,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 17:08:09,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-20 17:08:09,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-20 17:08:09,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:09,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:09,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 17:08:09,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:09,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:09,779 INFO L85 PathProgramCache]: Analyzing trace with hash -418252424, now seen corresponding path program 1 times [2023-12-20 17:08:09,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:09,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730018099] [2023-12-20 17:08:09,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:09,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:10,107 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 17:08:10,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:10,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730018099] [2023-12-20 17:08:10,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730018099] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:10,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:10,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:08:10,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679775043] [2023-12-20 17:08:10,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:10,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:08:10,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:10,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:08:10,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:08:10,115 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 17:08:15,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:15,465 INFO L93 Difference]: Finished difference Result 3696 states and 6823 transitions. [2023-12-20 17:08:15,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:08:15,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2023-12-20 17:08:15,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:15,474 INFO L225 Difference]: With dead ends: 3696 [2023-12-20 17:08:15,474 INFO L226 Difference]: Without dead ends: 2663 [2023-12-20 17:08:15,475 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 17:08:15,476 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 2676 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 4127 mSolverCounterSat, 1487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2676 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 5614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1487 IncrementalHoareTripleChecker+Valid, 4127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:15,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2676 Valid, 1017 Invalid, 5614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1487 Valid, 4127 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-20 17:08:15,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2023-12-20 17:08:15,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2662. [2023-12-20 17:08:15,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2661 states have (on average 1.4611048478015785) internal successors, (3888), 2661 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states 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 17:08:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3888 transitions. [2023-12-20 17:08:15,516 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3888 transitions. Word has length 42 [2023-12-20 17:08:15,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:15,516 INFO L495 AbstractCegarLoop]: Abstraction has 2662 states and 3888 transitions. [2023-12-20 17:08:15,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 17:08:15,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3888 transitions. [2023-12-20 17:08:15,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-20 17:08:15,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:15,521 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:08:15,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 17:08:15,521 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:15,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:15,522 INFO L85 PathProgramCache]: Analyzing trace with hash -302149792, now seen corresponding path program 1 times [2023-12-20 17:08:15,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:15,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864632042] [2023-12-20 17:08:15,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:15,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:08:15,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:15,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864632042] [2023-12-20 17:08:15,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864632042] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:08:15,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802133811] [2023-12-20 17:08:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:15,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:08:15,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:08:15,931 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 17:08:15,976 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 17:08:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:16,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:08:16,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:08:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-20 17:08:16,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:08:16,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802133811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:16,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:08:16,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-20 17:08:16,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884178272] [2023-12-20 17:08:16,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:16,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:16,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:16,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:16,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:08:16,193 INFO L87 Difference]: Start difference. First operand 2662 states and 3888 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 17:08:19,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:19,282 INFO L93 Difference]: Finished difference Result 6141 states and 9711 transitions. [2023-12-20 17:08:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:19,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 167 [2023-12-20 17:08:19,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:19,296 INFO L225 Difference]: With dead ends: 6141 [2023-12-20 17:08:19,300 INFO L226 Difference]: Without dead ends: 4267 [2023-12-20 17:08:19,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:08:19,307 INFO L413 NwaCegarLoop]: 1037 mSDtfsCounter, 743 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 2509 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 2509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:19,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 1186 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 2509 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 17:08:19,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2023-12-20 17:08:19,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4253. [2023-12-20 17:08:19,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4253 states, 4252 states have (on average 1.351599247412982) internal successors, (5747), 4252 states have internal predecessors, (5747), 0 states have call successors, (0), 0 states 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 17:08:19,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4253 states to 4253 states and 5747 transitions. [2023-12-20 17:08:19,370 INFO L78 Accepts]: Start accepts. Automaton has 4253 states and 5747 transitions. Word has length 167 [2023-12-20 17:08:19,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:19,373 INFO L495 AbstractCegarLoop]: Abstraction has 4253 states and 5747 transitions. [2023-12-20 17:08:19,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 17:08:19,373 INFO L276 IsEmpty]: Start isEmpty. Operand 4253 states and 5747 transitions. [2023-12-20 17:08:19,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-20 17:08:19,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:19,383 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:08:19,390 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 17:08:19,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:08:19,590 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:19,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:19,590 INFO L85 PathProgramCache]: Analyzing trace with hash -922062188, now seen corresponding path program 1 times [2023-12-20 17:08:19,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:19,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197856909] [2023-12-20 17:08:19,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:19,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:19,748 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-20 17:08:19,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:19,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197856909] [2023-12-20 17:08:19,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197856909] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:19,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:19,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:08:19,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266963704] [2023-12-20 17:08:19,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:19,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:19,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:19,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:19,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:19,751 INFO L87 Difference]: Start difference. First operand 4253 states and 5747 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 17:08:22,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:22,729 INFO L93 Difference]: Finished difference Result 10898 states and 15274 transitions. [2023-12-20 17:08:22,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:22,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 209 [2023-12-20 17:08:22,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:22,767 INFO L225 Difference]: With dead ends: 10898 [2023-12-20 17:08:22,768 INFO L226 Difference]: Without dead ends: 7433 [2023-12-20 17:08:22,773 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 17:08:22,779 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 906 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2569 mSolverCounterSat, 754 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 2569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:22,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 955 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 2569 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 17:08:22,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7433 states. [2023-12-20 17:08:22,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7433 to 7425. [2023-12-20 17:08:22,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7425 states, 7424 states have (on average 1.288927801724138) internal successors, (9569), 7424 states have internal predecessors, (9569), 0 states have call successors, (0), 0 states 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 17:08:22,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7425 states to 7425 states and 9569 transitions. [2023-12-20 17:08:22,931 INFO L78 Accepts]: Start accepts. Automaton has 7425 states and 9569 transitions. Word has length 209 [2023-12-20 17:08:22,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:22,933 INFO L495 AbstractCegarLoop]: Abstraction has 7425 states and 9569 transitions. [2023-12-20 17:08:22,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 17:08:22,933 INFO L276 IsEmpty]: Start isEmpty. Operand 7425 states and 9569 transitions. [2023-12-20 17:08:22,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-20 17:08:22,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:22,935 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:22,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 17:08:22,935 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:22,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:22,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1398357129, now seen corresponding path program 1 times [2023-12-20 17:08:22,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:22,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320268520] [2023-12-20 17:08:22,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:22,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-20 17:08:23,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:23,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320268520] [2023-12-20 17:08:23,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320268520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:23,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:23,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:08:23,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711936934] [2023-12-20 17:08:23,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:23,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:23,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:23,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:23,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:23,067 INFO L87 Difference]: Start difference. First operand 7425 states and 9569 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 17:08:26,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:26,107 INFO L93 Difference]: Finished difference Result 19620 states and 25904 transitions. [2023-12-20 17:08:26,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:26,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2023-12-20 17:08:26,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:26,141 INFO L225 Difference]: With dead ends: 19620 [2023-12-20 17:08:26,141 INFO L226 Difference]: Without dead ends: 12983 [2023-12-20 17:08:26,150 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 17:08:26,150 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 909 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 2891 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 3430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 2891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:26,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 636 Invalid, 3430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 2891 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 17:08:26,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2023-12-20 17:08:26,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 12974. [2023-12-20 17:08:26,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12974 states, 12973 states have (on average 1.2721035997841672) internal successors, (16503), 12973 states have internal predecessors, (16503), 0 states have call successors, (0), 0 states 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 17:08:26,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12974 states to 12974 states and 16503 transitions. [2023-12-20 17:08:26,331 INFO L78 Accepts]: Start accepts. Automaton has 12974 states and 16503 transitions. Word has length 223 [2023-12-20 17:08:26,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:26,331 INFO L495 AbstractCegarLoop]: Abstraction has 12974 states and 16503 transitions. [2023-12-20 17:08:26,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 17:08:26,332 INFO L276 IsEmpty]: Start isEmpty. Operand 12974 states and 16503 transitions. [2023-12-20 17:08:26,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-12-20 17:08:26,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:26,334 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:26,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 17:08:26,335 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:26,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:26,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1830598316, now seen corresponding path program 1 times [2023-12-20 17:08:26,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:26,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416052252] [2023-12-20 17:08:26,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:26,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:26,487 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-20 17:08:26,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:26,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416052252] [2023-12-20 17:08:26,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416052252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:26,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:26,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:08:26,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125001542] [2023-12-20 17:08:26,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:26,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:26,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:26,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:26,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:26,491 INFO L87 Difference]: Start difference. First operand 12974 states and 16503 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 17:08:29,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:29,593 INFO L93 Difference]: Finished difference Result 36179 states and 46597 transitions. [2023-12-20 17:08:29,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:29,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2023-12-20 17:08:29,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:29,635 INFO L225 Difference]: With dead ends: 36179 [2023-12-20 17:08:29,635 INFO L226 Difference]: Without dead ends: 23993 [2023-12-20 17:08:29,651 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 17:08:29,652 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:29,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 984 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 17:08:29,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23993 states. [2023-12-20 17:08:29,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23993 to 23202. [2023-12-20 17:08:29,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23202 states, 23201 states have (on average 1.2067583293823543) internal successors, (27998), 23201 states have internal predecessors, (27998), 0 states have call successors, (0), 0 states 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 17:08:29,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23202 states to 23202 states and 27998 transitions. [2023-12-20 17:08:29,919 INFO L78 Accepts]: Start accepts. Automaton has 23202 states and 27998 transitions. Word has length 239 [2023-12-20 17:08:29,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:29,920 INFO L495 AbstractCegarLoop]: Abstraction has 23202 states and 27998 transitions. [2023-12-20 17:08:29,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 17:08:29,920 INFO L276 IsEmpty]: Start isEmpty. Operand 23202 states and 27998 transitions. [2023-12-20 17:08:29,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-20 17:08:29,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:29,922 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:08:29,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 17:08:29,922 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:29,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:29,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1773785116, now seen corresponding path program 1 times [2023-12-20 17:08:29,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:29,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728459] [2023-12-20 17:08:29,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:29,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:30,041 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:08:30,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:30,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728459] [2023-12-20 17:08:30,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:30,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:30,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:08:30,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701125903] [2023-12-20 17:08:30,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:30,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:30,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:30,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:30,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:30,044 INFO L87 Difference]: Start difference. First operand 23202 states and 27998 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 17:08:33,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:33,100 INFO L93 Difference]: Finished difference Result 57431 states and 70772 transitions. [2023-12-20 17:08:33,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:33,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 241 [2023-12-20 17:08:33,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:33,145 INFO L225 Difference]: With dead ends: 57431 [2023-12-20 17:08:33,145 INFO L226 Difference]: Without dead ends: 35017 [2023-12-20 17:08:33,158 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 17:08:33,158 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 857 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:33,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 924 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 17:08:33,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35017 states. [2023-12-20 17:08:33,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35017 to 33433. [2023-12-20 17:08:33,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33433 states, 33432 states have (on average 1.1907154821727686) internal successors, (39808), 33432 states have internal predecessors, (39808), 0 states have call successors, (0), 0 states 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 17:08:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33433 states to 33433 states and 39808 transitions. [2023-12-20 17:08:33,493 INFO L78 Accepts]: Start accepts. Automaton has 33433 states and 39808 transitions. Word has length 241 [2023-12-20 17:08:33,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:33,493 INFO L495 AbstractCegarLoop]: Abstraction has 33433 states and 39808 transitions. [2023-12-20 17:08:33,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 17:08:33,493 INFO L276 IsEmpty]: Start isEmpty. Operand 33433 states and 39808 transitions. [2023-12-20 17:08:33,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2023-12-20 17:08:33,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:33,498 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:33,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 17:08:33,498 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:33,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:33,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1386051385, now seen corresponding path program 1 times [2023-12-20 17:08:33,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:33,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326967656] [2023-12-20 17:08:33,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:33,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 17:08:33,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:33,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326967656] [2023-12-20 17:08:33,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326967656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:33,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:33,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:08:33,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160908484] [2023-12-20 17:08:33,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:33,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:33,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:33,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:33,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:33,634 INFO L87 Difference]: Start difference. First operand 33433 states and 39808 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:36,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:36,715 INFO L93 Difference]: Finished difference Result 77892 states and 94390 transitions. [2023-12-20 17:08:36,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:36,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 330 [2023-12-20 17:08:36,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:36,777 INFO L225 Difference]: With dead ends: 77892 [2023-12-20 17:08:36,777 INFO L226 Difference]: Without dead ends: 45247 [2023-12-20 17:08:36,807 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 17:08:36,807 INFO L413 NwaCegarLoop]: 1794 mSDtfsCounter, 827 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:36,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 1944 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 17:08:36,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45247 states. [2023-12-20 17:08:37,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45247 to 44455. [2023-12-20 17:08:37,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44455 states, 44454 states have (on average 1.1654294326719756) internal successors, (51808), 44454 states have internal predecessors, (51808), 0 states have call successors, (0), 0 states 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 17:08:37,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44455 states to 44455 states and 51808 transitions. [2023-12-20 17:08:37,413 INFO L78 Accepts]: Start accepts. Automaton has 44455 states and 51808 transitions. Word has length 330 [2023-12-20 17:08:37,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:37,413 INFO L495 AbstractCegarLoop]: Abstraction has 44455 states and 51808 transitions. [2023-12-20 17:08:37,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:37,413 INFO L276 IsEmpty]: Start isEmpty. Operand 44455 states and 51808 transitions. [2023-12-20 17:08:37,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-12-20 17:08:37,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:37,419 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:37,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 17:08:37,419 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:37,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:37,420 INFO L85 PathProgramCache]: Analyzing trace with hash -113464025, now seen corresponding path program 1 times [2023-12-20 17:08:37,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:37,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969740402] [2023-12-20 17:08:37,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:37,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-20 17:08:37,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:37,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969740402] [2023-12-20 17:08:37,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969740402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:37,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:37,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:08:37,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877314866] [2023-12-20 17:08:37,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:37,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:08:37,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:37,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:08:37,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:08:37,591 INFO L87 Difference]: Start difference. First operand 44455 states and 51808 transitions. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:43,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:43,670 INFO L93 Difference]: Finished difference Result 152886 states and 179149 transitions. [2023-12-20 17:08:43,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:08:43,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 339 [2023-12-20 17:08:43,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:43,848 INFO L225 Difference]: With dead ends: 152886 [2023-12-20 17:08:43,848 INFO L226 Difference]: Without dead ends: 109219 [2023-12-20 17:08:43,889 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 17:08:43,890 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 1729 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 6613 mSolverCounterSat, 1139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 7752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1139 IncrementalHoareTripleChecker+Valid, 6613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:43,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1729 Valid, 680 Invalid, 7752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1139 Valid, 6613 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-20 17:08:43,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109219 states. [2023-12-20 17:08:45,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109219 to 106722. [2023-12-20 17:08:45,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106722 states, 106721 states have (on average 1.1518164185118205) internal successors, (122923), 106721 states have internal predecessors, (122923), 0 states have call successors, (0), 0 states 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 17:08:45,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106722 states to 106722 states and 122923 transitions. [2023-12-20 17:08:45,489 INFO L78 Accepts]: Start accepts. Automaton has 106722 states and 122923 transitions. Word has length 339 [2023-12-20 17:08:45,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:45,490 INFO L495 AbstractCegarLoop]: Abstraction has 106722 states and 122923 transitions. [2023-12-20 17:08:45,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:45,490 INFO L276 IsEmpty]: Start isEmpty. Operand 106722 states and 122923 transitions. [2023-12-20 17:08:45,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2023-12-20 17:08:45,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:45,498 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:45,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 17:08:45,498 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:45,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:45,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1716817504, now seen corresponding path program 1 times [2023-12-20 17:08:45,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:45,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874152885] [2023-12-20 17:08:45,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:45,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-20 17:08:45,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:45,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874152885] [2023-12-20 17:08:45,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874152885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:45,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:45,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:08:45,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966943074] [2023-12-20 17:08:45,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:45,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:45,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:45,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:45,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:45,833 INFO L87 Difference]: Start difference. First operand 106722 states and 122923 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 17:08:49,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:49,042 INFO L93 Difference]: Finished difference Result 199277 states and 230873 transitions. [2023-12-20 17:08:49,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:49,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 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 368 [2023-12-20 17:08:49,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:49,187 INFO L225 Difference]: With dead ends: 199277 [2023-12-20 17:08:49,187 INFO L226 Difference]: Without dead ends: 106734 [2023-12-20 17:08:49,226 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 17:08:49,227 INFO L413 NwaCegarLoop]: 1017 mSDtfsCounter, 730 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:49,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1197 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 17:08:49,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106734 states. [2023-12-20 17:08:50,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106734 to 105935. [2023-12-20 17:08:50,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105935 states, 105934 states have (on average 1.1520475012743785) internal successors, (122041), 105934 states have internal predecessors, (122041), 0 states have call successors, (0), 0 states 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 17:08:50,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105935 states to 105935 states and 122041 transitions. [2023-12-20 17:08:50,483 INFO L78 Accepts]: Start accepts. Automaton has 105935 states and 122041 transitions. Word has length 368 [2023-12-20 17:08:50,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:50,484 INFO L495 AbstractCegarLoop]: Abstraction has 105935 states and 122041 transitions. [2023-12-20 17:08:50,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 17:08:50,484 INFO L276 IsEmpty]: Start isEmpty. Operand 105935 states and 122041 transitions. [2023-12-20 17:08:50,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-12-20 17:08:50,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:50,491 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:50,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 17:08:50,492 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:50,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:50,492 INFO L85 PathProgramCache]: Analyzing trace with hash -139978806, now seen corresponding path program 1 times [2023-12-20 17:08:50,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:50,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357168732] [2023-12-20 17:08:50,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:50,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:52,082 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 304 proven. 113 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-20 17:08:52,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:52,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357168732] [2023-12-20 17:08:52,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357168732] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:08:52,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092032032] [2023-12-20 17:08:52,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:52,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:08:52,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:08:52,084 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 17:08:52,086 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 17:08:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:52,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:08:52,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:08:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-12-20 17:08:52,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:08:52,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092032032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:52,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:08:52,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:08:52,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085019197] [2023-12-20 17:08:52,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:52,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:52,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:52,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:52,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:08:52,282 INFO L87 Difference]: Start difference. First operand 105935 states and 122041 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 17:08:55,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:55,484 INFO L93 Difference]: Finished difference Result 215000 states and 248124 transitions. [2023-12-20 17:08:55,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:55,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 397 [2023-12-20 17:08:55,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:55,632 INFO L225 Difference]: With dead ends: 215000 [2023-12-20 17:08:55,633 INFO L226 Difference]: Without dead ends: 122457 [2023-12-20 17:08:55,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:08:55,651 INFO L413 NwaCegarLoop]: 1752 mSDtfsCounter, 863 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:55,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1881 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:08:55,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122457 states. [2023-12-20 17:08:56,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122457 to 114583. [2023-12-20 17:08:57,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114583 states, 114582 states have (on average 1.142378384039378) internal successors, (130896), 114582 states have internal predecessors, (130896), 0 states have call successors, (0), 0 states 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 17:08:57,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114583 states to 114583 states and 130896 transitions. [2023-12-20 17:08:57,167 INFO L78 Accepts]: Start accepts. Automaton has 114583 states and 130896 transitions. Word has length 397 [2023-12-20 17:08:57,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:57,168 INFO L495 AbstractCegarLoop]: Abstraction has 114583 states and 130896 transitions. [2023-12-20 17:08:57,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 17:08:57,168 INFO L276 IsEmpty]: Start isEmpty. Operand 114583 states and 130896 transitions. [2023-12-20 17:08:57,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2023-12-20 17:08:57,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:57,178 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:08:57,184 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 17:08:57,382 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,SelfDestructingSolverStorable10 [2023-12-20 17:08:57,383 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:57,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:57,384 INFO L85 PathProgramCache]: Analyzing trace with hash -999805575, now seen corresponding path program 1 times [2023-12-20 17:08:57,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:57,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396883066] [2023-12-20 17:08:57,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:57,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:58,666 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 319 proven. 113 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-20 17:08:58,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:58,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396883066] [2023-12-20 17:08:58,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396883066] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:08:58,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824676627] [2023-12-20 17:08:58,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:58,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:08:58,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:08:58,668 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 17:08:58,671 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 17:08:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:58,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:08:58,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:08:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 360 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-20 17:08:58,935 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:08:58,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824676627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:58,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:08:58,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:08:58,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056741762] [2023-12-20 17:08:58,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:58,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:58,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:58,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:58,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:08:58,937 INFO L87 Difference]: Start difference. First operand 114583 states and 130896 transitions. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states 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 17:09:02,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:02,380 INFO L93 Difference]: Finished difference Result 225999 states and 261421 transitions. [2023-12-20 17:09:02,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:02,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 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 472 [2023-12-20 17:09:02,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:02,545 INFO L225 Difference]: With dead ends: 225999 [2023-12-20 17:09:02,545 INFO L226 Difference]: Without dead ends: 124808 [2023-12-20 17:09:02,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:09:02,604 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 1139 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 1181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 3450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1181 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:02,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 420 Invalid, 3450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1181 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 17:09:02,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124808 states. [2023-12-20 17:09:03,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124808 to 124808. [2023-12-20 17:09:03,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124808 states, 124807 states have (on average 1.1485092983566627) internal successors, (143342), 124807 states have internal predecessors, (143342), 0 states have call successors, (0), 0 states 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 17:09:04,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124808 states to 124808 states and 143342 transitions. [2023-12-20 17:09:04,052 INFO L78 Accepts]: Start accepts. Automaton has 124808 states and 143342 transitions. Word has length 472 [2023-12-20 17:09:04,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:04,053 INFO L495 AbstractCegarLoop]: Abstraction has 124808 states and 143342 transitions. [2023-12-20 17:09:04,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states 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 17:09:04,053 INFO L276 IsEmpty]: Start isEmpty. Operand 124808 states and 143342 transitions. [2023-12-20 17:09:04,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-12-20 17:09:04,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:04,063 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:09:04,068 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 17:09:04,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:09:04,268 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:04,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:04,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1400239995, now seen corresponding path program 1 times [2023-12-20 17:09:04,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:04,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275973732] [2023-12-20 17:09:04,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:04,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 492 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-12-20 17:09:04,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:04,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275973732] [2023-12-20 17:09:04,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275973732] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:04,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:04,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:09:04,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217080192] [2023-12-20 17:09:04,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:04,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:04,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:04,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:04,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:09:04,773 INFO L87 Difference]: Start difference. First operand 124808 states and 143342 transitions. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states 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 17:09:08,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:08,606 INFO L93 Difference]: Finished difference Result 275588 states and 320316 transitions. [2023-12-20 17:09:08,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:08,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 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 486 [2023-12-20 17:09:08,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:08,992 INFO L225 Difference]: With dead ends: 275588 [2023-12-20 17:09:08,992 INFO L226 Difference]: Without dead ends: 151568 [2023-12-20 17:09:09,027 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 17:09:09,032 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 812 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2428 mSolverCounterSat, 925 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 3353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 925 IncrementalHoareTripleChecker+Valid, 2428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:09,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 905 Invalid, 3353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [925 Valid, 2428 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 17:09:09,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151568 states. [2023-12-20 17:09:10,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151568 to 149972. [2023-12-20 17:09:10,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149972 states, 149971 states have (on average 1.1513692647245135) internal successors, (172672), 149971 states have internal predecessors, (172672), 0 states have call successors, (0), 0 states 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 17:09:10,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149972 states to 149972 states and 172672 transitions. [2023-12-20 17:09:10,937 INFO L78 Accepts]: Start accepts. Automaton has 149972 states and 172672 transitions. Word has length 486 [2023-12-20 17:09:10,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:10,937 INFO L495 AbstractCegarLoop]: Abstraction has 149972 states and 172672 transitions. [2023-12-20 17:09:10,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states 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 17:09:10,938 INFO L276 IsEmpty]: Start isEmpty. Operand 149972 states and 172672 transitions. [2023-12-20 17:09:10,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-20 17:09:10,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:10,949 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:09:10,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 17:09:10,949 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:10,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:10,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1385646280, now seen corresponding path program 1 times [2023-12-20 17:09:10,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:10,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489282968] [2023-12-20 17:09:10,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:10,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 476 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 17:09:11,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:11,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489282968] [2023-12-20 17:09:11,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489282968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:11,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:11,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:09:11,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092355651] [2023-12-20 17:09:11,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:11,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:11,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:11,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:11,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:09:11,337 INFO L87 Difference]: Start difference. First operand 149972 states and 172672 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 17:09:15,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:15,119 INFO L93 Difference]: Finished difference Result 299943 states and 345290 transitions. [2023-12-20 17:09:15,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:15,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 490 [2023-12-20 17:09:15,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:15,365 INFO L225 Difference]: With dead ends: 299943 [2023-12-20 17:09:15,365 INFO L226 Difference]: Without dead ends: 149183 [2023-12-20 17:09:15,424 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 17:09:15,425 INFO L413 NwaCegarLoop]: 1696 mSDtfsCounter, 736 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 667 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 667 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:15,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1837 Invalid, 3161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [667 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 17:09:15,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149183 states. [2023-12-20 17:09:16,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149183 to 149162. [2023-12-20 17:09:16,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149162 states, 149161 states have (on average 1.109841044240787) internal successors, (165545), 149161 states have internal predecessors, (165545), 0 states have call successors, (0), 0 states 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 17:09:17,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149162 states to 149162 states and 165545 transitions. [2023-12-20 17:09:17,356 INFO L78 Accepts]: Start accepts. Automaton has 149162 states and 165545 transitions. Word has length 490 [2023-12-20 17:09:17,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:17,356 INFO L495 AbstractCegarLoop]: Abstraction has 149162 states and 165545 transitions. [2023-12-20 17:09:17,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 17:09:17,357 INFO L276 IsEmpty]: Start isEmpty. Operand 149162 states and 165545 transitions. [2023-12-20 17:09:17,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-20 17:09:17,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:17,384 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:09:17,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 17:09:17,385 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:17,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:17,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1354864871, now seen corresponding path program 1 times [2023-12-20 17:09:17,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:17,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188667466] [2023-12-20 17:09:17,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:17,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-20 17:09:17,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:17,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188667466] [2023-12-20 17:09:17,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188667466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:17,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:17,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:09:17,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512002677] [2023-12-20 17:09:17,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:17,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:09:17,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:17,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:09:17,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:09:17,997 INFO L87 Difference]: Start difference. First operand 149162 states and 165545 transitions. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states 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 17:09:23,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:23,452 INFO L93 Difference]: Finished difference Result 333002 states and 372452 transitions. [2023-12-20 17:09:23,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:09:23,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 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 490 [2023-12-20 17:09:23,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:23,759 INFO L225 Difference]: With dead ends: 333002 [2023-12-20 17:09:23,759 INFO L226 Difference]: Without dead ends: 199589 [2023-12-20 17:09:23,843 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 17:09:23,843 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 1380 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 5611 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 6183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 5611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:23,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 981 Invalid, 6183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 5611 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-20 17:09:24,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199589 states. [2023-12-20 17:09:25,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199589 to 180669. [2023-12-20 17:09:25,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180669 states, 180668 states have (on average 1.1079604578563995) internal successors, (200173), 180668 states have internal predecessors, (200173), 0 states have call successors, (0), 0 states 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 17:09:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180669 states to 180669 states and 200173 transitions. [2023-12-20 17:09:26,201 INFO L78 Accepts]: Start accepts. Automaton has 180669 states and 200173 transitions. Word has length 490 [2023-12-20 17:09:26,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:26,201 INFO L495 AbstractCegarLoop]: Abstraction has 180669 states and 200173 transitions. [2023-12-20 17:09:26,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states 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 17:09:26,201 INFO L276 IsEmpty]: Start isEmpty. Operand 180669 states and 200173 transitions. [2023-12-20 17:09:26,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2023-12-20 17:09:26,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:26,468 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:09:26,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 17:09:26,469 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:26,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:26,472 INFO L85 PathProgramCache]: Analyzing trace with hash -983157209, now seen corresponding path program 1 times [2023-12-20 17:09:26,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:26,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622200517] [2023-12-20 17:09:26,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:26,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 687 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-12-20 17:09:26,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:26,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622200517] [2023-12-20 17:09:26,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622200517] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:26,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:26,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:09:26,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785716333] [2023-12-20 17:09:26,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:26,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:26,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:26,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:26,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:09:26,763 INFO L87 Difference]: Start difference. First operand 180669 states and 200173 transitions. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states 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 17:09:30,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:30,982 INFO L93 Difference]: Finished difference Result 410177 states and 456556 transitions. [2023-12-20 17:09:30,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:30,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 628 [2023-12-20 17:09:30,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:31,349 INFO L225 Difference]: With dead ends: 410177 [2023-12-20 17:09:31,349 INFO L226 Difference]: Without dead ends: 245258 [2023-12-20 17:09:31,439 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 17:09:31,439 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 968 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2452 mSolverCounterSat, 937 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 3389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 937 IncrementalHoareTripleChecker+Valid, 2452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:31,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 695 Invalid, 3389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [937 Valid, 2452 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 17:09:31,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245258 states. [2023-12-20 17:09:34,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245258 to 245253. [2023-12-20 17:09:34,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245253 states, 245252 states have (on average 1.096818782313702) internal successors, (268997), 245252 states have internal predecessors, (268997), 0 states have call successors, (0), 0 states 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 17:09:35,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245253 states to 245253 states and 268997 transitions. [2023-12-20 17:09:35,106 INFO L78 Accepts]: Start accepts. Automaton has 245253 states and 268997 transitions. Word has length 628 [2023-12-20 17:09:35,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:35,106 INFO L495 AbstractCegarLoop]: Abstraction has 245253 states and 268997 transitions. [2023-12-20 17:09:35,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states 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 17:09:35,107 INFO L276 IsEmpty]: Start isEmpty. Operand 245253 states and 268997 transitions. [2023-12-20 17:09:35,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2023-12-20 17:09:35,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:35,132 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:09:35,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 17:09:35,132 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:35,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:35,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1212550725, now seen corresponding path program 1 times [2023-12-20 17:09:35,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:35,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970867295] [2023-12-20 17:09:35,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:35,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:35,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-12-20 17:09:35,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:35,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970867295] [2023-12-20 17:09:35,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970867295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:35,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:35,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:09:35,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500873464] [2023-12-20 17:09:35,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:35,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:35,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:35,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:35,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:09:35,701 INFO L87 Difference]: Start difference. First operand 245253 states and 268997 transitions. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 17:09:39,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:39,839 INFO L93 Difference]: Finished difference Result 490521 states and 537992 transitions. [2023-12-20 17:09:39,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:39,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 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 647 [2023-12-20 17:09:39,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:40,485 INFO L225 Difference]: With dead ends: 490521 [2023-12-20 17:09:40,485 INFO L226 Difference]: Without dead ends: 246056 [2023-12-20 17:09:40,572 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 17:09:40,588 INFO L413 NwaCegarLoop]: 1372 mSDtfsCounter, 923 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2455 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 3043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 2455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:40,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1455 Invalid, 3043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 2455 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 17:09:40,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246056 states. [2023-12-20 17:09:43,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246056 to 244464. [2023-12-20 17:09:43,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244464 states, 244463 states have (on average 1.080269815882158) internal successors, (264086), 244463 states have internal predecessors, (264086), 0 states have call successors, (0), 0 states 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 17:09:43,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244464 states to 244464 states and 264086 transitions. [2023-12-20 17:09:43,615 INFO L78 Accepts]: Start accepts. Automaton has 244464 states and 264086 transitions. Word has length 647 [2023-12-20 17:09:43,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:43,615 INFO L495 AbstractCegarLoop]: Abstraction has 244464 states and 264086 transitions. [2023-12-20 17:09:43,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 17:09:43,616 INFO L276 IsEmpty]: Start isEmpty. Operand 244464 states and 264086 transitions. [2023-12-20 17:09:43,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-12-20 17:09:43,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:43,641 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:09:43,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 17:09:43,641 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:43,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:43,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1546580369, now seen corresponding path program 1 times [2023-12-20 17:09:43,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:43,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956094863] [2023-12-20 17:09:43,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:43,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1232 backedges. 919 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-12-20 17:09:44,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:44,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956094863] [2023-12-20 17:09:44,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956094863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:44,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:44,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:09:44,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446674132] [2023-12-20 17:09:44,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:44,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:44,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:44,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:44,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:09:44,365 INFO L87 Difference]: Start difference. First operand 244464 states and 264086 transitions. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 17:09:47,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:47,968 INFO L93 Difference]: Finished difference Result 486562 states and 525499 transitions. [2023-12-20 17:09:47,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:47,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 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 677 [2023-12-20 17:09:47,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:48,330 INFO L225 Difference]: With dead ends: 486562 [2023-12-20 17:09:48,330 INFO L226 Difference]: Without dead ends: 242886 [2023-12-20 17:09:48,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 17:09:48,439 INFO L413 NwaCegarLoop]: 1330 mSDtfsCounter, 1003 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2410 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 2410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:48,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 1406 Invalid, 2850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 2410 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:09:48,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242886 states. [2023-12-20 17:09:50,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242886 to 242097. [2023-12-20 17:09:51,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242097 states, 242096 states have (on average 1.0582083140572336) internal successors, (256188), 242096 states have internal predecessors, (256188), 0 states have call successors, (0), 0 states 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 17:09:51,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242097 states to 242097 states and 256188 transitions. [2023-12-20 17:09:51,653 INFO L78 Accepts]: Start accepts. Automaton has 242097 states and 256188 transitions. Word has length 677 [2023-12-20 17:09:51,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:51,653 INFO L495 AbstractCegarLoop]: Abstraction has 242097 states and 256188 transitions. [2023-12-20 17:09:51,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 17:09:51,653 INFO L276 IsEmpty]: Start isEmpty. Operand 242097 states and 256188 transitions. [2023-12-20 17:09:51,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2023-12-20 17:09:51,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:51,684 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:09:51,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 17:09:51,684 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:51,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:51,684 INFO L85 PathProgramCache]: Analyzing trace with hash -897491425, now seen corresponding path program 1 times [2023-12-20 17:09:51,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:51,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222460713] [2023-12-20 17:09:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:51,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:52,814 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 556 proven. 110 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-20 17:09:52,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:52,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222460713] [2023-12-20 17:09:52,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222460713] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:09:52,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917733233] [2023-12-20 17:09:52,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:52,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:09:52,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:09:52,817 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 17:09:52,819 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 17:09:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:53,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 17:09:53,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:09:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 542 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-12-20 17:09:53,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:09:53,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917733233] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:53,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:09:53,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-20 17:09:53,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452931150] [2023-12-20 17:09:53,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:53,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:53,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:53,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:53,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:09:53,709 INFO L87 Difference]: Start difference. First operand 242097 states and 256188 transitions. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 2 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 17:09:57,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:57,176 INFO L93 Difference]: Finished difference Result 477128 states and 505251 transitions. [2023-12-20 17:09:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:57,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 2 states have internal predecessors, (456), 0 states have call successors, (0), 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 692 [2023-12-20 17:09:57,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:57,480 INFO L225 Difference]: With dead ends: 477128 [2023-12-20 17:09:57,481 INFO L226 Difference]: Without dead ends: 248416 [2023-12-20 17:09:57,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 691 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:09:57,537 INFO L413 NwaCegarLoop]: 968 mSDtfsCounter, 616 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 2523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:57,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 1098 Invalid, 2523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2414 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:09:57,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248416 states. [2023-12-20 17:10:00,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248416 to 248403. [2023-12-20 17:10:00,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248403 states, 248402 states have (on average 1.051956103413016) internal successors, (261308), 248402 states have internal predecessors, (261308), 0 states have call successors, (0), 0 states 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 17:10:00,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248403 states to 248403 states and 261308 transitions. [2023-12-20 17:10:00,732 INFO L78 Accepts]: Start accepts. Automaton has 248403 states and 261308 transitions. Word has length 692 [2023-12-20 17:10:00,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:00,732 INFO L495 AbstractCegarLoop]: Abstraction has 248403 states and 261308 transitions. [2023-12-20 17:10:00,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 2 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 17:10:00,732 INFO L276 IsEmpty]: Start isEmpty. Operand 248403 states and 261308 transitions. [2023-12-20 17:10:00,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-20 17:10:00,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:00,764 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:10:00,772 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 17:10:00,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:10:00,972 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:00,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:00,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2140388963, now seen corresponding path program 1 times [2023-12-20 17:10:00,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:00,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511678092] [2023-12-20 17:10:00,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:00,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:01,575 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 678 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-20 17:10:01,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:01,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511678092] [2023-12-20 17:10:01,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511678092] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:01,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:10:01,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:10:01,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750952058] [2023-12-20 17:10:01,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:01,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:01,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:01,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:01,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:10:01,584 INFO L87 Difference]: Start difference. First operand 248403 states and 261308 transitions. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 17:10:05,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:05,423 INFO L93 Difference]: Finished difference Result 492839 states and 518386 transitions. [2023-12-20 17:10:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:05,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 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 774 [2023-12-20 17:10:05,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:05,813 INFO L225 Difference]: With dead ends: 492839 [2023-12-20 17:10:05,813 INFO L226 Difference]: Without dead ends: 242861 [2023-12-20 17:10:06,198 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 17:10:06,199 INFO L413 NwaCegarLoop]: 1420 mSDtfsCounter, 998 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:06,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 1541 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 2286 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:10:06,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242861 states. [2023-12-20 17:10:08,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242861 to 234979. [2023-12-20 17:10:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234979 states, 234978 states have (on average 1.0383227365966174) internal successors, (243983), 234978 states have internal predecessors, (243983), 0 states have call successors, (0), 0 states 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 17:10:09,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234979 states to 234979 states and 243983 transitions. [2023-12-20 17:10:09,185 INFO L78 Accepts]: Start accepts. Automaton has 234979 states and 243983 transitions. Word has length 774 [2023-12-20 17:10:09,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:09,185 INFO L495 AbstractCegarLoop]: Abstraction has 234979 states and 243983 transitions. [2023-12-20 17:10:09,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 17:10:09,185 INFO L276 IsEmpty]: Start isEmpty. Operand 234979 states and 243983 transitions. [2023-12-20 17:10:09,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2023-12-20 17:10:09,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:09,215 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:10:09,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 17:10:09,215 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:09,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:09,216 INFO L85 PathProgramCache]: Analyzing trace with hash 317327473, now seen corresponding path program 1 times [2023-12-20 17:10:09,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:09,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150836009] [2023-12-20 17:10:09,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:09,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1542 backedges. 1114 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2023-12-20 17:10:09,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:09,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150836009] [2023-12-20 17:10:09,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150836009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:09,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:10:09,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:10:09,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360210163] [2023-12-20 17:10:09,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:09,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:09,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:09,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:09,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:10:09,810 INFO L87 Difference]: Start difference. First operand 234979 states and 243983 transitions. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states 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 17:10:13,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:13,067 INFO L93 Difference]: Finished difference Result 461300 states and 479270 transitions. [2023-12-20 17:10:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:13,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 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 779 [2023-12-20 17:10:13,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:13,384 INFO L225 Difference]: With dead ends: 461300 [2023-12-20 17:10:13,384 INFO L226 Difference]: Without dead ends: 240494 [2023-12-20 17:10:13,498 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 17:10:13,498 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 721 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 2450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:13,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 1811 Invalid, 2450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:10:13,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240494 states. [2023-12-20 17:10:16,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240494 to 240488. [2023-12-20 17:10:16,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240488 states, 240487 states have (on average 1.037694345224482) internal successors, (249552), 240487 states have internal predecessors, (249552), 0 states have call successors, (0), 0 states 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 17:10:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240488 states to 240488 states and 249552 transitions. [2023-12-20 17:10:16,884 INFO L78 Accepts]: Start accepts. Automaton has 240488 states and 249552 transitions. Word has length 779 [2023-12-20 17:10:16,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:16,884 INFO L495 AbstractCegarLoop]: Abstraction has 240488 states and 249552 transitions. [2023-12-20 17:10:16,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states 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 17:10:16,884 INFO L276 IsEmpty]: Start isEmpty. Operand 240488 states and 249552 transitions. [2023-12-20 17:10:16,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2023-12-20 17:10:16,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:16,922 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:10:16,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 17:10:16,922 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:16,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:16,923 INFO L85 PathProgramCache]: Analyzing trace with hash 525202193, now seen corresponding path program 1 times [2023-12-20 17:10:16,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:16,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141798063] [2023-12-20 17:10:16,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:16,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:17,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 1233 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2023-12-20 17:10:17,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:17,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141798063] [2023-12-20 17:10:17,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141798063] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:17,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:10:17,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:10:17,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711998852] [2023-12-20 17:10:17,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:17,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:17,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:17,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:17,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:10:17,470 INFO L87 Difference]: Start difference. First operand 240488 states and 249552 transitions. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states 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 17:10:20,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:20,772 INFO L93 Difference]: Finished difference Result 468399 states and 486323 transitions. [2023-12-20 17:10:20,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:20,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 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 825 [2023-12-20 17:10:20,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:21,130 INFO L225 Difference]: With dead ends: 468399 [2023-12-20 17:10:21,131 INFO L226 Difference]: Without dead ends: 240502 [2023-12-20 17:10:21,244 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 17:10:21,245 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 702 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2411 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:21,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 1723 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2411 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 17:10:21,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240502 states. [2023-12-20 17:10:23,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240502 to 237332. [2023-12-20 17:10:24,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237332 states, 237331 states have (on average 1.034727869515571) internal successors, (245573), 237331 states have internal predecessors, (245573), 0 states have call successors, (0), 0 states 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 17:10:24,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237332 states to 237332 states and 245573 transitions. [2023-12-20 17:10:24,538 INFO L78 Accepts]: Start accepts. Automaton has 237332 states and 245573 transitions. Word has length 825 [2023-12-20 17:10:24,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:24,538 INFO L495 AbstractCegarLoop]: Abstraction has 237332 states and 245573 transitions. [2023-12-20 17:10:24,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states 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 17:10:24,539 INFO L276 IsEmpty]: Start isEmpty. Operand 237332 states and 245573 transitions. [2023-12-20 17:10:24,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 851 [2023-12-20 17:10:24,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:24,573 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:10:24,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 17:10:24,574 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:24,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:24,574 INFO L85 PathProgramCache]: Analyzing trace with hash 574049771, now seen corresponding path program 1 times [2023-12-20 17:10:24,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:24,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015082215] [2023-12-20 17:10:24,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:24,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 791 proven. 0 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2023-12-20 17:10:25,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:25,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015082215] [2023-12-20 17:10:25,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015082215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:25,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:10:25,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:10:25,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426242984] [2023-12-20 17:10:25,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:25,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:25,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:25,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:25,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:10:25,618 INFO L87 Difference]: Start difference. First operand 237332 states and 245573 transitions. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 17:10:29,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:29,898 INFO L93 Difference]: Finished difference Result 499888 states and 518066 transitions. [2023-12-20 17:10:29,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:29,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 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 850 [2023-12-20 17:10:29,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:30,305 INFO L225 Difference]: With dead ends: 499888 [2023-12-20 17:10:30,306 INFO L226 Difference]: Without dead ends: 276729 [2023-12-20 17:10:30,399 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 17:10:30,399 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 776 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 888 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 888 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:30,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 551 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [888 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 17:10:30,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276729 states. [2023-12-20 17:10:32,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276729 to 236547. [2023-12-20 17:10:33,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236547 states, 236546 states have (on average 1.034200536047957) internal successors, (244636), 236546 states have internal predecessors, (244636), 0 states have call successors, (0), 0 states 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 17:10:33,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236547 states to 236547 states and 244636 transitions. [2023-12-20 17:10:33,317 INFO L78 Accepts]: Start accepts. Automaton has 236547 states and 244636 transitions. Word has length 850 [2023-12-20 17:10:33,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:33,318 INFO L495 AbstractCegarLoop]: Abstraction has 236547 states and 244636 transitions. [2023-12-20 17:10:33,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 17:10:33,318 INFO L276 IsEmpty]: Start isEmpty. Operand 236547 states and 244636 transitions. [2023-12-20 17:10:33,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2023-12-20 17:10:33,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:33,349 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:10:33,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 17:10:33,349 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:33,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:33,349 INFO L85 PathProgramCache]: Analyzing trace with hash -732553807, now seen corresponding path program 1 times [2023-12-20 17:10:33,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:33,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233392286] [2023-12-20 17:10:33,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:33,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 1042 trivial. 0 not checked. [2023-12-20 17:10:33,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:33,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233392286] [2023-12-20 17:10:33,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233392286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:33,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:10:33,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:10:33,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980432076] [2023-12-20 17:10:33,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:33,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:33,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:33,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:33,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:10:33,898 INFO L87 Difference]: Start difference. First operand 236547 states and 244636 transitions. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 2 states have internal predecessors, (412), 0 states have call successors, (0), 0 states 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 17:10:36,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:36,446 INFO L93 Difference]: Finished difference Result 457330 states and 473212 transitions. [2023-12-20 17:10:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:36,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 2 states have internal predecessors, (412), 0 states have call successors, (0), 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 864 [2023-12-20 17:10:36,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:36,763 INFO L225 Difference]: With dead ends: 457330 [2023-12-20 17:10:36,764 INFO L226 Difference]: Without dead ends: 234955 [2023-12-20 17:10:36,872 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 17:10:36,872 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 1307 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:36,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 256 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:10:37,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234955 states. [2023-12-20 17:10:39,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234955 to 234954. [2023-12-20 17:10:39,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234954 states, 234953 states have (on average 1.03398977667874) internal successors, (242939), 234953 states have internal predecessors, (242939), 0 states have call successors, (0), 0 states 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 17:10:39,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234954 states to 234954 states and 242939 transitions. [2023-12-20 17:10:39,802 INFO L78 Accepts]: Start accepts. Automaton has 234954 states and 242939 transitions. Word has length 864 [2023-12-20 17:10:39,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:39,802 INFO L495 AbstractCegarLoop]: Abstraction has 234954 states and 242939 transitions. [2023-12-20 17:10:39,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 2 states have internal predecessors, (412), 0 states have call successors, (0), 0 states 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 17:10:39,803 INFO L276 IsEmpty]: Start isEmpty. Operand 234954 states and 242939 transitions. [2023-12-20 17:10:39,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2023-12-20 17:10:39,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:39,839 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:10:39,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 17:10:39,839 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:39,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:39,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1763296354, now seen corresponding path program 1 times [2023-12-20 17:10:39,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:39,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757107479] [2023-12-20 17:10:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:39,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:40,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 932 proven. 0 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-12-20 17:10:40,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:40,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757107479] [2023-12-20 17:10:40,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757107479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:40,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:10:40,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:10:40,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60044060] [2023-12-20 17:10:40,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:40,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:10:40,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:40,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:10:40,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:10:40,638 INFO L87 Difference]: Start difference. First operand 234954 states and 242939 transitions. Second operand has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states 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 17:10:47,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:47,246 INFO L93 Difference]: Finished difference Result 597596 states and 618050 transitions. [2023-12-20 17:10:47,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:10:47,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 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 922 [2023-12-20 17:10:47,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:47,685 INFO L225 Difference]: With dead ends: 597596 [2023-12-20 17:10:47,686 INFO L226 Difference]: Without dead ends: 363430 [2023-12-20 17:10:47,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:10:47,762 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 1677 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 5888 mSolverCounterSat, 937 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 6825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 937 IncrementalHoareTripleChecker+Valid, 5888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:47,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 793 Invalid, 6825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [937 Valid, 5888 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-20 17:10:48,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363430 states. [2023-12-20 17:10:51,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363430 to 342036. [2023-12-20 17:10:51,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342036 states, 342035 states have (on average 1.0307600099405032) internal successors, (352556), 342035 states have internal predecessors, (352556), 0 states have call successors, (0), 0 states 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 17:10:51,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342036 states to 342036 states and 352556 transitions. [2023-12-20 17:10:51,994 INFO L78 Accepts]: Start accepts. Automaton has 342036 states and 352556 transitions. Word has length 922 [2023-12-20 17:10:51,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:51,994 INFO L495 AbstractCegarLoop]: Abstraction has 342036 states and 352556 transitions. [2023-12-20 17:10:51,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states 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 17:10:51,995 INFO L276 IsEmpty]: Start isEmpty. Operand 342036 states and 352556 transitions. [2023-12-20 17:10:52,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2023-12-20 17:10:52,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:52,030 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:10:52,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 17:10:52,030 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:52,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:52,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1102549136, now seen corresponding path program 1 times [2023-12-20 17:10:52,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:52,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810709805] [2023-12-20 17:10:52,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:52,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms