/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/Problem15_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 17:20:51,179 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 17:20:51,267 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 17:20:51,271 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 17:20:51,272 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 17:20:51,298 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 17:20:51,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 17:20:51,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 17:20:51,301 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 17:20:51,304 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 17:20:51,304 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 17:20:51,305 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 17:20:51,306 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 17:20:51,307 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 17:20:51,307 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 17:20:51,307 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 17:20:51,308 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 17:20:51,308 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 17:20:51,308 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 17:20:51,308 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 17:20:51,309 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 17:20:51,309 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 17:20:51,309 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 17:20:51,309 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 17:20:51,310 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 17:20:51,310 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 17:20:51,310 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 17:20:51,310 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 17:20:51,311 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 17:20:51,311 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 17:20:51,312 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 17:20:51,312 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 17:20:51,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:20:51,313 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 17:20:51,313 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 17:20:51,313 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 17:20:51,313 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 17:20:51,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 17:20:51,314 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 17:20:51,314 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 17:20:51,314 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 17:20:51,314 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 17:20:51,314 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 17:20:51,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 17:20:51,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 17:20:51,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 17:20:51,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 17:20:51,588 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 17:20:51,588 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 17:20:51,589 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label59.c [2023-12-20 17:20:52,841 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 17:20:53,185 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 17:20:53,185 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label59.c [2023-12-20 17:20:53,206 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96fb11aa2/c223adbf91d546beb36b5eda423dda92/FLAG29a317856 [2023-12-20 17:20:53,220 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96fb11aa2/c223adbf91d546beb36b5eda423dda92 [2023-12-20 17:20:53,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 17:20:53,224 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 17:20:53,226 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 17:20:53,226 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 17:20:53,230 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 17:20:53,231 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:20:53" (1/1) ... [2023-12-20 17:20:53,232 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62568071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:20:53, skipping insertion in model container [2023-12-20 17:20:53,232 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:20:53" (1/1) ... [2023-12-20 17:20:53,300 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 17:20:53,515 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label59.c[6635,6648] [2023-12-20 17:20:53,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:20:53,921 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 17:20:53,952 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label59.c[6635,6648] [2023-12-20 17:20:54,105 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:20:54,120 INFO L206 MainTranslator]: Completed translation [2023-12-20 17:20:54,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:20:54 WrapperNode [2023-12-20 17:20:54,121 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 17:20:54,122 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 17:20:54,122 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 17:20:54,122 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 17:20:54,129 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:20:54" (1/1) ... [2023-12-20 17:20:54,173 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:20:54" (1/1) ... [2023-12-20 17:20:54,323 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1760 [2023-12-20 17:20:54,324 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 17:20:54,324 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 17:20:54,324 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 17:20:54,325 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 17:20:54,334 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:20:54" (1/1) ... [2023-12-20 17:20:54,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:20:54" (1/1) ... [2023-12-20 17:20:54,354 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:20:54" (1/1) ... [2023-12-20 17:20:54,475 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 17:20:54,475 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:20:54" (1/1) ... [2023-12-20 17:20:54,476 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:20:54" (1/1) ... [2023-12-20 17:20:54,528 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:20:54" (1/1) ... [2023-12-20 17:20:54,545 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:20:54" (1/1) ... [2023-12-20 17:20:54,566 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:20:54" (1/1) ... [2023-12-20 17:20:54,591 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:20:54" (1/1) ... [2023-12-20 17:20:54,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 17:20:54,623 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 17:20:54,623 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 17:20:54,623 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 17:20:54,623 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:20:54" (1/1) ... [2023-12-20 17:20:54,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:20:54,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:20:54,649 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 17:20:54,653 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 17:20:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 17:20:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 17:20:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 17:20:54,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 17:20:54,733 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 17:20:54,735 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 17:20:57,075 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 17:20:57,128 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 17:20:57,128 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 17:20:57,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:20:57 BoogieIcfgContainer [2023-12-20 17:20:57,129 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 17:20:57,132 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 17:20:57,132 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 17:20:57,135 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 17:20:57,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:20:53" (1/3) ... [2023-12-20 17:20:57,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338a6420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:20:57, skipping insertion in model container [2023-12-20 17:20:57,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:20:54" (2/3) ... [2023-12-20 17:20:57,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338a6420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:20:57, skipping insertion in model container [2023-12-20 17:20:57,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:20:57" (3/3) ... [2023-12-20 17:20:57,138 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label59.c [2023-12-20 17:20:57,154 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 17:20:57,155 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 17:20:57,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 17:20:57,224 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;@a9dbae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 17:20:57,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 17:20:57,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:20:57,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 17:20:57,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:20:57,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:20:57,245 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:20:57,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:20:57,250 INFO L85 PathProgramCache]: Analyzing trace with hash -776852995, now seen corresponding path program 1 times [2023-12-20 17:20:57,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:20:57,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627069691] [2023-12-20 17:20:57,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:20:57,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:20:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:20:57,400 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 17:20:57,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:20:57,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627069691] [2023-12-20 17:20:57,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627069691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:20:57,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:20:57,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:20:57,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505689987] [2023-12-20 17:20:57,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:20:57,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 17:20:57,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:20:57,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 17:20:57,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:20:57,449 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:20:57,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:20:57,513 INFO L93 Difference]: Finished difference Result 723 states and 1375 transitions. [2023-12-20 17:20:57,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 17:20:57,518 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-20 17:20:57,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:20:57,536 INFO L225 Difference]: With dead ends: 723 [2023-12-20 17:20:57,536 INFO L226 Difference]: Without dead ends: 360 [2023-12-20 17:20:57,542 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 17:20:57,547 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:20:57,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 623 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 17:20:57,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-12-20 17:20:57,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2023-12-20 17:20:57,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.7353760445682451) internal successors, (623), 359 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:20:57,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 623 transitions. [2023-12-20 17:20:57,596 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 623 transitions. Word has length 53 [2023-12-20 17:20:57,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:20:57,596 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 623 transitions. [2023-12-20 17:20:57,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:20:57,597 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 623 transitions. [2023-12-20 17:20:57,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 17:20:57,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:20:57,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:20:57,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 17:20:57,598 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:20:57,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:20:57,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1081355088, now seen corresponding path program 1 times [2023-12-20 17:20:57,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:20:57,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490649555] [2023-12-20 17:20:57,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:20:57,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:20:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:20:57,750 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 17:20:57,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:20:57,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490649555] [2023-12-20 17:20:57,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490649555] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:20:57,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:20:57,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:20:57,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172922025] [2023-12-20 17:20:57,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:20:57,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:20:57,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:20:57,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:20:57,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:20:57,753 INFO L87 Difference]: Start difference. First operand 360 states and 623 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:20:59,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:20:59,768 INFO L93 Difference]: Finished difference Result 1052 states and 1830 transitions. [2023-12-20 17:20:59,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:20:59,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-20 17:20:59,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:20:59,771 INFO L225 Difference]: With dead ends: 1052 [2023-12-20 17:20:59,772 INFO L226 Difference]: Without dead ends: 693 [2023-12-20 17:20:59,773 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 17:20:59,774 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 316 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:20:59,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 91 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:20:59,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-12-20 17:20:59,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 683. [2023-12-20 17:20:59,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.719941348973607) internal successors, (1173), 682 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:20:59,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1173 transitions. [2023-12-20 17:20:59,810 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1173 transitions. Word has length 53 [2023-12-20 17:20:59,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:20:59,811 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 1173 transitions. [2023-12-20 17:20:59,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:20:59,811 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1173 transitions. [2023-12-20 17:20:59,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-20 17:20:59,814 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:20:59,815 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:20:59,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 17:20:59,815 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:20:59,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:20:59,816 INFO L85 PathProgramCache]: Analyzing trace with hash 389266623, now seen corresponding path program 1 times [2023-12-20 17:20:59,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:20:59,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410457719] [2023-12-20 17:20:59,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:20:59,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:20:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:00,248 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:21:00,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:00,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410457719] [2023-12-20 17:21:00,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410457719] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:00,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:21:00,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:21:00,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199219773] [2023-12-20 17:21:00,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:00,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:21:00,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:00,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:21:00,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:21:00,258 INFO L87 Difference]: Start difference. First operand 683 states and 1173 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:01,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:01,952 INFO L93 Difference]: Finished difference Result 1680 states and 2895 transitions. [2023-12-20 17:21:01,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:21:01,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2023-12-20 17:21:01,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:01,957 INFO L225 Difference]: With dead ends: 1680 [2023-12-20 17:21:01,957 INFO L226 Difference]: Without dead ends: 998 [2023-12-20 17:21:01,959 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 17:21:01,959 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 254 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:01,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 224 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 17:21:01,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2023-12-20 17:21:01,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 988. [2023-12-20 17:21:01,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 987 states have (on average 1.6200607902735562) internal successors, (1599), 987 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:01,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1599 transitions. [2023-12-20 17:21:01,984 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1599 transitions. Word has length 118 [2023-12-20 17:21:01,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:01,985 INFO L495 AbstractCegarLoop]: Abstraction has 988 states and 1599 transitions. [2023-12-20 17:21:01,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:01,985 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1599 transitions. [2023-12-20 17:21:01,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-20 17:21:01,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:01,989 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:21:01,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 17:21:01,989 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:01,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:01,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1028794524, now seen corresponding path program 1 times [2023-12-20 17:21:01,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:01,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195088143] [2023-12-20 17:21:01,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:01,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:21:02,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:02,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195088143] [2023-12-20 17:21:02,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195088143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:02,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:21:02,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:21:02,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029104961] [2023-12-20 17:21:02,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:02,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:21:02,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:02,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:21:02,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:21:02,136 INFO L87 Difference]: Start difference. First operand 988 states and 1599 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:03,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:03,585 INFO L93 Difference]: Finished difference Result 2574 states and 4254 transitions. [2023-12-20 17:21:03,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:21:03,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-12-20 17:21:03,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:03,592 INFO L225 Difference]: With dead ends: 2574 [2023-12-20 17:21:03,592 INFO L226 Difference]: Without dead ends: 1587 [2023-12-20 17:21:03,593 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 17:21:03,594 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 284 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:03,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 335 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:21:03,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2023-12-20 17:21:03,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1583. [2023-12-20 17:21:03,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 1.3988621997471555) internal successors, (2213), 1582 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:03,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2213 transitions. [2023-12-20 17:21:03,629 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2213 transitions. Word has length 119 [2023-12-20 17:21:03,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:03,629 INFO L495 AbstractCegarLoop]: Abstraction has 1583 states and 2213 transitions. [2023-12-20 17:21:03,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:03,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2213 transitions. [2023-12-20 17:21:03,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-20 17:21:03,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:03,637 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:21:03,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 17:21:03,637 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:03,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:03,638 INFO L85 PathProgramCache]: Analyzing trace with hash 769366362, now seen corresponding path program 1 times [2023-12-20 17:21:03,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:03,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798671953] [2023-12-20 17:21:03,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:03,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:03,888 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:21:03,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:03,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798671953] [2023-12-20 17:21:03,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798671953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:03,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:21:03,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:21:03,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198252783] [2023-12-20 17:21:03,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:03,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 17:21:03,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:03,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 17:21:03,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:21:03,891 INFO L87 Difference]: Start difference. First operand 1583 states and 2213 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:05,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:05,935 INFO L93 Difference]: Finished difference Result 4081 states and 5879 transitions. [2023-12-20 17:21:05,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:21:05,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2023-12-20 17:21:05,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:05,945 INFO L225 Difference]: With dead ends: 4081 [2023-12-20 17:21:05,945 INFO L226 Difference]: Without dead ends: 2798 [2023-12-20 17:21:05,947 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 17:21:05,951 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 346 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1711 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 1711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:05,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 409 Invalid, 2162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 1711 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:21:05,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2023-12-20 17:21:05,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2482. [2023-12-20 17:21:05,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2481 states have (on average 1.2962515114873034) internal successors, (3216), 2481 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:06,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3216 transitions. [2023-12-20 17:21:06,001 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3216 transitions. Word has length 123 [2023-12-20 17:21:06,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:06,001 INFO L495 AbstractCegarLoop]: Abstraction has 2482 states and 3216 transitions. [2023-12-20 17:21:06,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:06,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3216 transitions. [2023-12-20 17:21:06,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-20 17:21:06,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:06,003 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:21:06,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 17:21:06,003 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:06,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:06,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1868741584, now seen corresponding path program 1 times [2023-12-20 17:21:06,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:06,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732005663] [2023-12-20 17:21:06,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:06,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:21:06,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:06,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732005663] [2023-12-20 17:21:06,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732005663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:06,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:21:06,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:21:06,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691423845] [2023-12-20 17:21:06,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:06,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:21:06,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:06,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:21:06,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:21:06,175 INFO L87 Difference]: Start difference. First operand 2482 states and 3216 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:07,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:07,724 INFO L93 Difference]: Finished difference Result 7357 states and 9525 transitions. [2023-12-20 17:21:07,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:21:07,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2023-12-20 17:21:07,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:07,740 INFO L225 Difference]: With dead ends: 7357 [2023-12-20 17:21:07,740 INFO L226 Difference]: Without dead ends: 3680 [2023-12-20 17:21:07,747 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 17:21:07,749 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 290 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:07,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 609 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:21:07,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3680 states. [2023-12-20 17:21:07,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3680 to 3680. [2023-12-20 17:21:07,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3679 states have (on average 1.1696113074204948) internal successors, (4303), 3679 states have internal predecessors, (4303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:07,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 4303 transitions. [2023-12-20 17:21:07,832 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 4303 transitions. Word has length 144 [2023-12-20 17:21:07,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:07,833 INFO L495 AbstractCegarLoop]: Abstraction has 3680 states and 4303 transitions. [2023-12-20 17:21:07,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:07,833 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 4303 transitions. [2023-12-20 17:21:07,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-12-20 17:21:07,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:07,836 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:21:07,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 17:21:07,836 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:07,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:07,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1456022276, now seen corresponding path program 1 times [2023-12-20 17:21:07,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:07,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907216520] [2023-12-20 17:21:07,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:07,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:08,188 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:21:08,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:08,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907216520] [2023-12-20 17:21:08,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907216520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:08,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:21:08,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:21:08,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108582815] [2023-12-20 17:21:08,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:08,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:21:08,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:08,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:21:08,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:21:08,192 INFO L87 Difference]: Start difference. First operand 3680 states and 4303 transitions. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:10,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:10,357 INFO L93 Difference]: Finished difference Result 11272 states and 13176 transitions. [2023-12-20 17:21:10,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:21:10,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 286 [2023-12-20 17:21:10,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:10,387 INFO L225 Difference]: With dead ends: 11272 [2023-12-20 17:21:10,387 INFO L226 Difference]: Without dead ends: 7294 [2023-12-20 17:21:10,394 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 17:21:10,396 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 455 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:10,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 121 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 17:21:10,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7294 states. [2023-12-20 17:21:10,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7294 to 6080. [2023-12-20 17:21:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6080 states, 6079 states have (on average 1.1837473268629708) internal successors, (7196), 6079 states have internal predecessors, (7196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:10,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 7196 transitions. [2023-12-20 17:21:10,529 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 7196 transitions. Word has length 286 [2023-12-20 17:21:10,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:10,530 INFO L495 AbstractCegarLoop]: Abstraction has 6080 states and 7196 transitions. [2023-12-20 17:21:10,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:10,530 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 7196 transitions. [2023-12-20 17:21:10,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-12-20 17:21:10,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:10,535 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:21:10,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 17:21:10,535 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:10,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:10,536 INFO L85 PathProgramCache]: Analyzing trace with hash -76759790, now seen corresponding path program 1 times [2023-12-20 17:21:10,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:10,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177207449] [2023-12-20 17:21:10,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:10,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:11,318 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:21:11,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:11,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177207449] [2023-12-20 17:21:11,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177207449] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:21:11,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892748934] [2023-12-20 17:21:11,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:11,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:21:11,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:21:11,324 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 17:21:11,337 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 17:21:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:11,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:21:11,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:21:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:21:11,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:21:11,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892748934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:11,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:21:11,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-20 17:21:11,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778995770] [2023-12-20 17:21:11,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:11,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:21:11,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:11,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:21:11,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:21:11,612 INFO L87 Difference]: Start difference. First operand 6080 states and 7196 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:12,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:12,803 INFO L93 Difference]: Finished difference Result 12160 states and 14394 transitions. [2023-12-20 17:21:12,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:21:12,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 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 323 [2023-12-20 17:21:12,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:12,823 INFO L225 Difference]: With dead ends: 12160 [2023-12-20 17:21:12,823 INFO L226 Difference]: Without dead ends: 6081 [2023-12-20 17:21:12,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:21:12,832 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 331 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:12,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 415 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 17:21:12,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6081 states. [2023-12-20 17:21:12,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6081 to 6078. [2023-12-20 17:21:12,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6078 states, 6077 states have (on average 1.161592891229225) internal successors, (7059), 6077 states have internal predecessors, (7059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:12,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6078 states to 6078 states and 7059 transitions. [2023-12-20 17:21:12,931 INFO L78 Accepts]: Start accepts. Automaton has 6078 states and 7059 transitions. Word has length 323 [2023-12-20 17:21:12,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:12,931 INFO L495 AbstractCegarLoop]: Abstraction has 6078 states and 7059 transitions. [2023-12-20 17:21:12,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:12,932 INFO L276 IsEmpty]: Start isEmpty. Operand 6078 states and 7059 transitions. [2023-12-20 17:21:12,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-12-20 17:21:12,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:12,940 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:21:12,949 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 17:21:13,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:21:13,146 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:13,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:13,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1843338794, now seen corresponding path program 1 times [2023-12-20 17:21:13,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:13,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825648028] [2023-12-20 17:21:13,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:13,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-20 17:21:13,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:13,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825648028] [2023-12-20 17:21:13,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825648028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:13,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:21:13,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:21:13,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677937100] [2023-12-20 17:21:13,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:13,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:21:13,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:13,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:21:13,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:21:13,621 INFO L87 Difference]: Start difference. First operand 6078 states and 7059 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:14,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:14,748 INFO L93 Difference]: Finished difference Result 12454 states and 14420 transitions. [2023-12-20 17:21:14,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:21:14,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 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 336 [2023-12-20 17:21:14,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:14,774 INFO L225 Difference]: With dead ends: 12454 [2023-12-20 17:21:14,774 INFO L226 Difference]: Without dead ends: 6377 [2023-12-20 17:21:14,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:21:14,781 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:14,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 301 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 17:21:14,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6377 states. [2023-12-20 17:21:14,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6377 to 6377. [2023-12-20 17:21:14,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6377 states, 6376 states have (on average 1.1543287327478042) internal successors, (7360), 6376 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:14,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6377 states to 6377 states and 7360 transitions. [2023-12-20 17:21:14,880 INFO L78 Accepts]: Start accepts. Automaton has 6377 states and 7360 transitions. Word has length 336 [2023-12-20 17:21:14,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:14,881 INFO L495 AbstractCegarLoop]: Abstraction has 6377 states and 7360 transitions. [2023-12-20 17:21:14,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:14,881 INFO L276 IsEmpty]: Start isEmpty. Operand 6377 states and 7360 transitions. [2023-12-20 17:21:14,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2023-12-20 17:21:14,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:14,887 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:21:14,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 17:21:14,887 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:14,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:14,888 INFO L85 PathProgramCache]: Analyzing trace with hash -580323688, now seen corresponding path program 1 times [2023-12-20 17:21:14,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:14,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065648403] [2023-12-20 17:21:14,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:14,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 103 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:21:15,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:15,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065648403] [2023-12-20 17:21:15,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065648403] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:21:15,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317006475] [2023-12-20 17:21:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:15,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:21:15,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:21:15,761 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 17:21:15,788 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 17:21:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:15,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:21:15,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:21:16,040 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:21:16,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:21:16,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317006475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:16,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:21:16,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-20 17:21:16,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760332569] [2023-12-20 17:21:16,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:16,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:21:16,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:16,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:21:16,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:21:16,043 INFO L87 Difference]: Start difference. First operand 6377 states and 7360 transitions. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:17,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:17,216 INFO L93 Difference]: Finished difference Result 15449 states and 18174 transitions. [2023-12-20 17:21:17,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:21:17,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 410 [2023-12-20 17:21:17,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:17,236 INFO L225 Difference]: With dead ends: 15449 [2023-12-20 17:21:17,236 INFO L226 Difference]: Without dead ends: 9372 [2023-12-20 17:21:17,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:21:17,244 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 244 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:17,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 267 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 17:21:17,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9372 states. [2023-12-20 17:21:17,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9372 to 9366. [2023-12-20 17:21:17,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9366 states, 9365 states have (on average 1.1273892151628404) internal successors, (10558), 9365 states have internal predecessors, (10558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:17,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9366 states to 9366 states and 10558 transitions. [2023-12-20 17:21:17,354 INFO L78 Accepts]: Start accepts. Automaton has 9366 states and 10558 transitions. Word has length 410 [2023-12-20 17:21:17,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:17,355 INFO L495 AbstractCegarLoop]: Abstraction has 9366 states and 10558 transitions. [2023-12-20 17:21:17,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:17,355 INFO L276 IsEmpty]: Start isEmpty. Operand 9366 states and 10558 transitions. [2023-12-20 17:21:17,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2023-12-20 17:21:17,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:17,360 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:21:17,368 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 17:21:17,567 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,SelfDestructingSolverStorable9 [2023-12-20 17:21:17,568 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:17,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:17,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1091042039, now seen corresponding path program 1 times [2023-12-20 17:21:17,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:17,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729741024] [2023-12-20 17:21:17,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:17,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-12-20 17:21:18,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:18,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729741024] [2023-12-20 17:21:18,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729741024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:18,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:21:18,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:21:18,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181691178] [2023-12-20 17:21:18,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:18,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:21:18,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:18,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:21:18,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:21:18,200 INFO L87 Difference]: Start difference. First operand 9366 states and 10558 transitions. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:20,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:20,369 INFO L93 Difference]: Finished difference Result 22042 states and 24949 transitions. [2023-12-20 17:21:20,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:21:20,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 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 466 [2023-12-20 17:21:20,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:20,396 INFO L225 Difference]: With dead ends: 22042 [2023-12-20 17:21:20,396 INFO L226 Difference]: Without dead ends: 12677 [2023-12-20 17:21:20,406 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 17:21:20,407 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 423 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 2110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:20,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 124 Invalid, 2110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 17:21:20,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12677 states. [2023-12-20 17:21:20,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12677 to 9368. [2023-12-20 17:21:20,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9368 states, 9367 states have (on average 1.1258674068538486) internal successors, (10546), 9367 states have internal predecessors, (10546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:20,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9368 states to 9368 states and 10546 transitions. [2023-12-20 17:21:20,532 INFO L78 Accepts]: Start accepts. Automaton has 9368 states and 10546 transitions. Word has length 466 [2023-12-20 17:21:20,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:20,532 INFO L495 AbstractCegarLoop]: Abstraction has 9368 states and 10546 transitions. [2023-12-20 17:21:20,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:20,533 INFO L276 IsEmpty]: Start isEmpty. Operand 9368 states and 10546 transitions. [2023-12-20 17:21:20,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2023-12-20 17:21:20,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:20,538 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 17:21:20,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 17:21:20,539 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:20,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:20,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1011153474, now seen corresponding path program 1 times [2023-12-20 17:21:20,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:20,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749064576] [2023-12-20 17:21:20,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:20,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:21,902 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 262 proven. 215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:21:21,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:21,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749064576] [2023-12-20 17:21:21,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749064576] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:21:21,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295748470] [2023-12-20 17:21:21,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:21,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:21:21,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:21:21,905 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 17:21:21,932 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 17:21:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:22,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:21:22,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:21:22,156 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2023-12-20 17:21:22,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:21:22,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295748470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:22,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:21:22,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 17:21:22,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032388162] [2023-12-20 17:21:22,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:22,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:21:22,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:22,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:21:22,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:21:22,158 INFO L87 Difference]: Start difference. First operand 9368 states and 10546 transitions. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:23,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:23,326 INFO L93 Difference]: Finished difference Result 22023 states and 24969 transitions. [2023-12-20 17:21:23,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:21:23,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 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 540 [2023-12-20 17:21:23,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:23,350 INFO L225 Difference]: With dead ends: 22023 [2023-12-20 17:21:23,350 INFO L226 Difference]: Without dead ends: 12955 [2023-12-20 17:21:23,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:21:23,362 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 362 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:23,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 442 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 17:21:23,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12955 states. [2023-12-20 17:21:23,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12955 to 10862. [2023-12-20 17:21:23,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10862 states, 10861 states have (on average 1.1340576374182856) internal successors, (12317), 10861 states have internal predecessors, (12317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:23,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10862 states to 10862 states and 12317 transitions. [2023-12-20 17:21:23,535 INFO L78 Accepts]: Start accepts. Automaton has 10862 states and 12317 transitions. Word has length 540 [2023-12-20 17:21:23,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:23,536 INFO L495 AbstractCegarLoop]: Abstraction has 10862 states and 12317 transitions. [2023-12-20 17:21:23,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:23,536 INFO L276 IsEmpty]: Start isEmpty. Operand 10862 states and 12317 transitions. [2023-12-20 17:21:23,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2023-12-20 17:21:23,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:23,544 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:21:23,550 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 17:21:23,750 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 17:21:23,751 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:23,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:23,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1604450333, now seen corresponding path program 1 times [2023-12-20 17:21:23,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:23,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446826735] [2023-12-20 17:21:23,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:23,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:24,837 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 462 proven. 172 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-20 17:21:24,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:24,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446826735] [2023-12-20 17:21:24,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446826735] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:21:24,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838658815] [2023-12-20 17:21:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:24,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:21:24,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:21:24,839 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 17:21:24,851 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 17:21:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:25,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:21:25,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:21:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 528 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-12-20 17:21:25,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:21:25,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838658815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:25,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:21:25,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 17:21:25,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307768881] [2023-12-20 17:21:25,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:25,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:21:25,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:25,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:21:25,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:21:25,173 INFO L87 Difference]: Start difference. First operand 10862 states and 12317 transitions. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:26,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:26,228 INFO L93 Difference]: Finished difference Result 21429 states and 24338 transitions. [2023-12-20 17:21:26,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:21:26,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 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 586 [2023-12-20 17:21:26,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:26,244 INFO L225 Difference]: With dead ends: 21429 [2023-12-20 17:21:26,245 INFO L226 Difference]: Without dead ends: 10867 [2023-12-20 17:21:26,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:21:26,256 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 301 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:26,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 474 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 17:21:26,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10867 states. [2023-12-20 17:21:26,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10867 to 10561. [2023-12-20 17:21:26,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10561 states, 10560 states have (on average 1.116098484848485) internal successors, (11786), 10560 states have internal predecessors, (11786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:26,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10561 states to 10561 states and 11786 transitions. [2023-12-20 17:21:26,394 INFO L78 Accepts]: Start accepts. Automaton has 10561 states and 11786 transitions. Word has length 586 [2023-12-20 17:21:26,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:26,394 INFO L495 AbstractCegarLoop]: Abstraction has 10561 states and 11786 transitions. [2023-12-20 17:21:26,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:26,395 INFO L276 IsEmpty]: Start isEmpty. Operand 10561 states and 11786 transitions. [2023-12-20 17:21:26,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2023-12-20 17:21:26,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:26,402 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:21:26,416 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 17:21:26,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:21:26,611 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:26,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:26,611 INFO L85 PathProgramCache]: Analyzing trace with hash -606083024, now seen corresponding path program 1 times [2023-12-20 17:21:26,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:26,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102659992] [2023-12-20 17:21:26,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:26,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 421 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-20 17:21:27,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:27,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102659992] [2023-12-20 17:21:27,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102659992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:27,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:21:27,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 17:21:27,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694722405] [2023-12-20 17:21:27,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:27,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 17:21:27,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:27,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 17:21:27,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:21:27,740 INFO L87 Difference]: Start difference. First operand 10561 states and 11786 transitions. Second operand has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:29,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:29,196 INFO L93 Difference]: Finished difference Result 23846 states and 26897 transitions. [2023-12-20 17:21:29,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:21:29,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 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 590 [2023-12-20 17:21:29,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:29,213 INFO L225 Difference]: With dead ends: 23846 [2023-12-20 17:21:29,213 INFO L226 Difference]: Without dead ends: 13585 [2023-12-20 17:21:29,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 17:21:29,225 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 807 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:29,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 596 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:21:29,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13585 states. [2023-12-20 17:21:29,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13585 to 11756. [2023-12-20 17:21:29,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11756 states, 11755 states have (on average 1.114844746916206) internal successors, (13105), 11755 states have internal predecessors, (13105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:29,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11756 states to 11756 states and 13105 transitions. [2023-12-20 17:21:29,375 INFO L78 Accepts]: Start accepts. Automaton has 11756 states and 13105 transitions. Word has length 590 [2023-12-20 17:21:29,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:29,376 INFO L495 AbstractCegarLoop]: Abstraction has 11756 states and 13105 transitions. [2023-12-20 17:21:29,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:29,376 INFO L276 IsEmpty]: Start isEmpty. Operand 11756 states and 13105 transitions. [2023-12-20 17:21:29,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-12-20 17:21:29,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:29,386 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:21:29,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 17:21:29,386 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:29,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:29,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1064121670, now seen corresponding path program 1 times [2023-12-20 17:21:29,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:29,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205069155] [2023-12-20 17:21:29,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:29,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 467 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2023-12-20 17:21:30,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:30,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205069155] [2023-12-20 17:21:30,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205069155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:30,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:21:30,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:21:30,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568691304] [2023-12-20 17:21:30,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:30,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:21:30,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:30,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:21:30,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:21:30,397 INFO L87 Difference]: Start difference. First operand 11756 states and 13105 transitions. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:31,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:31,401 INFO L93 Difference]: Finished difference Result 23217 states and 25914 transitions. [2023-12-20 17:21:31,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:21:31,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 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 667 [2023-12-20 17:21:31,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:31,416 INFO L225 Difference]: With dead ends: 23217 [2023-12-20 17:21:31,416 INFO L226 Difference]: Without dead ends: 11761 [2023-12-20 17:21:31,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 17:21:31,425 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 297 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:31,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 136 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 17:21:31,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11761 states. [2023-12-20 17:21:31,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11761 to 11756. [2023-12-20 17:21:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11756 states, 11755 states have (on average 1.101148447469162) internal successors, (12944), 11755 states have internal predecessors, (12944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:31,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11756 states to 11756 states and 12944 transitions. [2023-12-20 17:21:31,542 INFO L78 Accepts]: Start accepts. Automaton has 11756 states and 12944 transitions. Word has length 667 [2023-12-20 17:21:31,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:31,542 INFO L495 AbstractCegarLoop]: Abstraction has 11756 states and 12944 transitions. [2023-12-20 17:21:31,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:31,543 INFO L276 IsEmpty]: Start isEmpty. Operand 11756 states and 12944 transitions. [2023-12-20 17:21:31,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-12-20 17:21:31,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:31,579 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:21:31,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 17:21:31,579 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:31,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:31,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1402555553, now seen corresponding path program 1 times [2023-12-20 17:21:31,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:31,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288125729] [2023-12-20 17:21:31,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:31,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:32,115 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 467 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-20 17:21:32,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:32,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288125729] [2023-12-20 17:21:32,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288125729] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:32,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:21:32,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:21:32,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355639252] [2023-12-20 17:21:32,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:32,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:21:32,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:32,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:21:32,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:21:32,118 INFO L87 Difference]: Start difference. First operand 11756 states and 12944 transitions. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:33,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:33,516 INFO L93 Difference]: Finished difference Result 28918 states and 31734 transitions. [2023-12-20 17:21:33,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:21:33,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 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 669 [2023-12-20 17:21:33,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:33,535 INFO L225 Difference]: With dead ends: 28918 [2023-12-20 17:21:33,535 INFO L226 Difference]: Without dead ends: 17462 [2023-12-20 17:21:33,546 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 17:21:33,546 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 238 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:33,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 597 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:21:33,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17462 states. [2023-12-20 17:21:33,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17462 to 17151. [2023-12-20 17:21:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17151 states, 17150 states have (on average 1.083673469387755) internal successors, (18585), 17150 states have internal predecessors, (18585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:33,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17151 states to 17151 states and 18585 transitions. [2023-12-20 17:21:33,737 INFO L78 Accepts]: Start accepts. Automaton has 17151 states and 18585 transitions. Word has length 669 [2023-12-20 17:21:33,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:33,737 INFO L495 AbstractCegarLoop]: Abstraction has 17151 states and 18585 transitions. [2023-12-20 17:21:33,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:33,738 INFO L276 IsEmpty]: Start isEmpty. Operand 17151 states and 18585 transitions. [2023-12-20 17:21:33,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2023-12-20 17:21:33,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:33,783 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 17:21:33,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 17:21:33,784 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:33,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:33,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1017724808, now seen corresponding path program 1 times [2023-12-20 17:21:33,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:33,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575445610] [2023-12-20 17:21:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:33,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 486 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-12-20 17:21:34,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:34,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575445610] [2023-12-20 17:21:34,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575445610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:34,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:21:34,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:21:34,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307294354] [2023-12-20 17:21:34,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:34,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:21:34,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:34,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:21:34,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:21:34,239 INFO L87 Difference]: Start difference. First operand 17151 states and 18585 transitions. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:35,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:35,423 INFO L93 Difference]: Finished difference Result 36096 states and 39305 transitions. [2023-12-20 17:21:35,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:21:35,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 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 678 [2023-12-20 17:21:35,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:35,441 INFO L225 Difference]: With dead ends: 36096 [2023-12-20 17:21:35,441 INFO L226 Difference]: Without dead ends: 19245 [2023-12-20 17:21:35,453 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 17:21:35,454 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 145 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:35,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 589 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 17:21:35,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19245 states. [2023-12-20 17:21:35,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19245 to 18946. [2023-12-20 17:21:35,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18946 states, 18945 states have (on average 1.0746371074162049) internal successors, (20359), 18945 states have internal predecessors, (20359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:35,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18946 states to 18946 states and 20359 transitions. [2023-12-20 17:21:35,663 INFO L78 Accepts]: Start accepts. Automaton has 18946 states and 20359 transitions. Word has length 678 [2023-12-20 17:21:35,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:35,663 INFO L495 AbstractCegarLoop]: Abstraction has 18946 states and 20359 transitions. [2023-12-20 17:21:35,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:35,664 INFO L276 IsEmpty]: Start isEmpty. Operand 18946 states and 20359 transitions. [2023-12-20 17:21:35,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2023-12-20 17:21:35,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:35,676 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:21:35,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 17:21:35,677 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:35,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:35,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1061308252, now seen corresponding path program 1 times [2023-12-20 17:21:35,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:35,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740077111] [2023-12-20 17:21:35,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:35,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 262 proven. 372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:21:36,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:36,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740077111] [2023-12-20 17:21:36,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740077111] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:21:36,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301570330] [2023-12-20 17:21:36,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:36,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:21:36,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:21:36,933 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:21:36,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 17:21:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:37,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 17:21:37,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:21:37,311 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2023-12-20 17:21:37,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:21:37,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301570330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:37,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:21:37,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-20 17:21:37,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344025773] [2023-12-20 17:21:37,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:37,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:21:37,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:37,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:21:37,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:21:37,314 INFO L87 Difference]: Start difference. First operand 18946 states and 20359 transitions. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:38,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:38,781 INFO L93 Difference]: Finished difference Result 45402 states and 48792 transitions. [2023-12-20 17:21:38,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:21:38,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 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 697 [2023-12-20 17:21:38,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:38,809 INFO L225 Difference]: With dead ends: 45402 [2023-12-20 17:21:38,809 INFO L226 Difference]: Without dead ends: 24065 [2023-12-20 17:21:38,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 696 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:21:38,827 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 346 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:38,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 436 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:21:38,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24065 states. [2023-12-20 17:21:39,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24065 to 20467. [2023-12-20 17:21:39,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20467 states, 20466 states have (on average 1.0633245382585752) internal successors, (21762), 20466 states have internal predecessors, (21762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:39,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20467 states to 20467 states and 21762 transitions. [2023-12-20 17:21:39,101 INFO L78 Accepts]: Start accepts. Automaton has 20467 states and 21762 transitions. Word has length 697 [2023-12-20 17:21:39,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:39,101 INFO L495 AbstractCegarLoop]: Abstraction has 20467 states and 21762 transitions. [2023-12-20 17:21:39,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:39,102 INFO L276 IsEmpty]: Start isEmpty. Operand 20467 states and 21762 transitions. [2023-12-20 17:21:39,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-12-20 17:21:39,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:39,112 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-20 17:21:39,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 17:21:39,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 17:21:39,321 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:39,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:39,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1653742565, now seen corresponding path program 1 times [2023-12-20 17:21:39,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:39,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119268936] [2023-12-20 17:21:39,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:39,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:40,372 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 588 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2023-12-20 17:21:40,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:40,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119268936] [2023-12-20 17:21:40,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119268936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:40,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:21:40,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:21:40,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936321156] [2023-12-20 17:21:40,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:40,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:21:40,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:40,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:21:40,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:21:40,376 INFO L87 Difference]: Start difference. First operand 20467 states and 21762 transitions. Second operand has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:42,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:42,217 INFO L93 Difference]: Finished difference Result 48434 states and 51386 transitions. [2023-12-20 17:21:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:21:42,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 705 [2023-12-20 17:21:42,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:42,243 INFO L225 Difference]: With dead ends: 48434 [2023-12-20 17:21:42,244 INFO L226 Difference]: Without dead ends: 27669 [2023-12-20 17:21:42,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:21:42,256 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 535 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1651 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:42,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 154 Invalid, 1866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1651 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:21:42,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27669 states. [2023-12-20 17:21:42,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27669 to 20467. [2023-12-20 17:21:42,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20467 states, 20466 states have (on average 1.0633245382585752) internal successors, (21762), 20466 states have internal predecessors, (21762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:42,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20467 states to 20467 states and 21762 transitions. [2023-12-20 17:21:42,523 INFO L78 Accepts]: Start accepts. Automaton has 20467 states and 21762 transitions. Word has length 705 [2023-12-20 17:21:42,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:42,524 INFO L495 AbstractCegarLoop]: Abstraction has 20467 states and 21762 transitions. [2023-12-20 17:21:42,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:42,525 INFO L276 IsEmpty]: Start isEmpty. Operand 20467 states and 21762 transitions. [2023-12-20 17:21:42,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 715 [2023-12-20 17:21:42,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:42,537 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:21:42,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 17:21:42,537 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:42,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:42,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1066963352, now seen corresponding path program 1 times [2023-12-20 17:21:42,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:42,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531566244] [2023-12-20 17:21:42,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:42,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:42,807 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 543 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2023-12-20 17:21:42,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:42,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531566244] [2023-12-20 17:21:42,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531566244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:42,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:21:42,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:21:42,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007935460] [2023-12-20 17:21:42,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:42,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:21:42,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:42,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:21:42,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:21:42,810 INFO L87 Difference]: Start difference. First operand 20467 states and 21762 transitions. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:43,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:43,739 INFO L93 Difference]: Finished difference Result 40930 states and 43524 transitions. [2023-12-20 17:21:43,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:21:43,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 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 714 [2023-12-20 17:21:43,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:43,758 INFO L225 Difference]: With dead ends: 40930 [2023-12-20 17:21:43,758 INFO L226 Difference]: Without dead ends: 20763 [2023-12-20 17:21:43,770 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 17:21:43,771 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 463 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:43,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 68 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 17:21:43,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20763 states. [2023-12-20 17:21:43,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20763 to 20464. [2023-12-20 17:21:43,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20464 states, 20463 states have (on average 1.0631872159507403) internal successors, (21756), 20463 states have internal predecessors, (21756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:43,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20464 states to 20464 states and 21756 transitions. [2023-12-20 17:21:43,946 INFO L78 Accepts]: Start accepts. Automaton has 20464 states and 21756 transitions. Word has length 714 [2023-12-20 17:21:43,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:43,946 INFO L495 AbstractCegarLoop]: Abstraction has 20464 states and 21756 transitions. [2023-12-20 17:21:43,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:43,947 INFO L276 IsEmpty]: Start isEmpty. Operand 20464 states and 21756 transitions. [2023-12-20 17:21:43,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2023-12-20 17:21:43,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:43,954 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-20 17:21:43,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 17:21:43,955 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:43,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:43,955 INFO L85 PathProgramCache]: Analyzing trace with hash -508250434, now seen corresponding path program 1 times [2023-12-20 17:21:43,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:43,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103517345] [2023-12-20 17:21:43,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:43,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:44,374 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 805 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-12-20 17:21:44,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:44,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103517345] [2023-12-20 17:21:44,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103517345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:44,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:21:44,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:21:44,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479799295] [2023-12-20 17:21:44,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:44,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:21:44,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:44,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:21:44,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:21:44,377 INFO L87 Difference]: Start difference. First operand 20464 states and 21756 transitions. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:45,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:45,461 INFO L93 Difference]: Finished difference Result 45410 states and 48389 transitions. [2023-12-20 17:21:45,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:21:45,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 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 725 [2023-12-20 17:21:45,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:45,485 INFO L225 Difference]: With dead ends: 45410 [2023-12-20 17:21:45,486 INFO L226 Difference]: Without dead ends: 25246 [2023-12-20 17:21:45,499 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 17:21:45,500 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 213 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:45,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 150 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 17:21:45,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25246 states. [2023-12-20 17:21:45,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25246 to 24349. [2023-12-20 17:21:45,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24349 states, 24348 states have (on average 1.059594217184163) internal successors, (25799), 24348 states have internal predecessors, (25799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24349 states to 24349 states and 25799 transitions. [2023-12-20 17:21:45,735 INFO L78 Accepts]: Start accepts. Automaton has 24349 states and 25799 transitions. Word has length 725 [2023-12-20 17:21:45,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:45,735 INFO L495 AbstractCegarLoop]: Abstraction has 24349 states and 25799 transitions. [2023-12-20 17:21:45,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:45,735 INFO L276 IsEmpty]: Start isEmpty. Operand 24349 states and 25799 transitions. [2023-12-20 17:21:45,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-12-20 17:21:45,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:45,744 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:21:45,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 17:21:45,744 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:45,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:45,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2097396006, now seen corresponding path program 1 times [2023-12-20 17:21:45,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:45,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668444609] [2023-12-20 17:21:45,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:45,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:46,247 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2023-12-20 17:21:46,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:46,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668444609] [2023-12-20 17:21:46,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668444609] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:46,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:21:46,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:21:46,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961715184] [2023-12-20 17:21:46,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:46,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:21:46,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:46,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:21:46,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:21:46,250 INFO L87 Difference]: Start difference. First operand 24349 states and 25799 transitions. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:47,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:47,538 INFO L93 Difference]: Finished difference Result 55009 states and 58247 transitions. [2023-12-20 17:21:47,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:21:47,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 764 [2023-12-20 17:21:47,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:47,569 INFO L225 Difference]: With dead ends: 55009 [2023-12-20 17:21:47,569 INFO L226 Difference]: Without dead ends: 28867 [2023-12-20 17:21:47,587 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 17:21:47,588 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 341 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:47,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 445 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 17:21:47,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28867 states. [2023-12-20 17:21:47,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28867 to 23153. [2023-12-20 17:21:47,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23153 states, 23152 states have (on average 1.058742225293711) internal successors, (24512), 23152 states have internal predecessors, (24512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:47,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23153 states to 23153 states and 24512 transitions. [2023-12-20 17:21:47,811 INFO L78 Accepts]: Start accepts. Automaton has 23153 states and 24512 transitions. Word has length 764 [2023-12-20 17:21:47,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:47,811 INFO L495 AbstractCegarLoop]: Abstraction has 23153 states and 24512 transitions. [2023-12-20 17:21:47,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:47,811 INFO L276 IsEmpty]: Start isEmpty. Operand 23153 states and 24512 transitions. [2023-12-20 17:21:47,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2023-12-20 17:21:47,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:47,824 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:21:47,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 17:21:47,824 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:47,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:47,825 INFO L85 PathProgramCache]: Analyzing trace with hash -862324749, now seen corresponding path program 1 times [2023-12-20 17:21:47,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:47,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526832468] [2023-12-20 17:21:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:47,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:48,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 633 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2023-12-20 17:21:48,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:48,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526832468] [2023-12-20 17:21:48,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526832468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:48,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:21:48,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:21:48,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689411226] [2023-12-20 17:21:48,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:48,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:21:48,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:48,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:21:48,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:21:48,343 INFO L87 Difference]: Start difference. First operand 23153 states and 24512 transitions. Second operand has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:49,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:49,935 INFO L93 Difference]: Finished difference Result 54690 states and 57938 transitions. [2023-12-20 17:21:49,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:21:49,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 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 838 [2023-12-20 17:21:49,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:49,962 INFO L225 Difference]: With dead ends: 54690 [2023-12-20 17:21:49,963 INFO L226 Difference]: Without dead ends: 30041 [2023-12-20 17:21:49,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:21:49,979 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 651 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:49,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 137 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:21:49,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30041 states. [2023-12-20 17:21:50,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30041 to 22254. [2023-12-20 17:21:50,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22254 states, 22253 states have (on average 1.0552285085157058) internal successors, (23482), 22253 states have internal predecessors, (23482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:50,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22254 states to 22254 states and 23482 transitions. [2023-12-20 17:21:50,334 INFO L78 Accepts]: Start accepts. Automaton has 22254 states and 23482 transitions. Word has length 838 [2023-12-20 17:21:50,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:50,335 INFO L495 AbstractCegarLoop]: Abstraction has 22254 states and 23482 transitions. [2023-12-20 17:21:50,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:50,335 INFO L276 IsEmpty]: Start isEmpty. Operand 22254 states and 23482 transitions. [2023-12-20 17:21:50,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2023-12-20 17:21:50,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:50,349 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:21:50,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 17:21:50,349 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:50,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:50,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1252105626, now seen corresponding path program 1 times [2023-12-20 17:21:50,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:50,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863094140] [2023-12-20 17:21:50,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:50,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:50,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 581 proven. 0 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2023-12-20 17:21:50,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:50,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863094140] [2023-12-20 17:21:50,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863094140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:50,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:21:50,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:21:50,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116310697] [2023-12-20 17:21:50,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:50,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:21:50,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:50,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:21:50,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:21:50,702 INFO L87 Difference]: Start difference. First operand 22254 states and 23482 transitions. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:51,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:51,717 INFO L93 Difference]: Finished difference Result 45697 states and 48233 transitions. [2023-12-20 17:21:51,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:21:51,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 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 843 [2023-12-20 17:21:51,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:51,740 INFO L225 Difference]: With dead ends: 45697 [2023-12-20 17:21:51,740 INFO L226 Difference]: Without dead ends: 23743 [2023-12-20 17:21:51,754 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 17:21:51,755 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 312 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:51,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 540 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 17:21:51,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23743 states. [2023-12-20 17:21:51,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23743 to 23443. [2023-12-20 17:21:51,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23443 states, 23442 states have (on average 1.052811193584165) internal successors, (24680), 23442 states have internal predecessors, (24680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:52,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23443 states to 23443 states and 24680 transitions. [2023-12-20 17:21:52,119 INFO L78 Accepts]: Start accepts. Automaton has 23443 states and 24680 transitions. Word has length 843 [2023-12-20 17:21:52,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:52,120 INFO L495 AbstractCegarLoop]: Abstraction has 23443 states and 24680 transitions. [2023-12-20 17:21:52,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:52,120 INFO L276 IsEmpty]: Start isEmpty. Operand 23443 states and 24680 transitions. [2023-12-20 17:21:52,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2023-12-20 17:21:52,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:52,134 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 17:21:52,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 17:21:52,134 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:52,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:52,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1967154322, now seen corresponding path program 1 times [2023-12-20 17:21:52,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:52,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943196886] [2023-12-20 17:21:52,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:52,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 905 trivial. 0 not checked. [2023-12-20 17:21:52,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:52,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943196886] [2023-12-20 17:21:52,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943196886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:21:52,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:21:52,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:21:52,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008584275] [2023-12-20 17:21:52,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:52,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:21:52,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:52,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:21:52,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:21:52,735 INFO L87 Difference]: Start difference. First operand 23443 states and 24680 transitions. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:53,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:53,827 INFO L93 Difference]: Finished difference Result 48687 states and 51201 transitions. [2023-12-20 17:21:53,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:21:53,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 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 17:21:53,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:53,850 INFO L225 Difference]: With dead ends: 48687 [2023-12-20 17:21:53,850 INFO L226 Difference]: Without dead ends: 25245 [2023-12-20 17:21:53,866 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 17:21:53,867 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 323 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:53,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 444 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 17:21:53,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25245 states. [2023-12-20 17:21:54,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25245 to 23144. [2023-12-20 17:21:54,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23144 states, 23143 states have (on average 1.0532774489046364) internal successors, (24376), 23143 states have internal predecessors, (24376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:54,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23144 states to 23144 states and 24376 transitions. [2023-12-20 17:21:54,114 INFO L78 Accepts]: Start accepts. Automaton has 23144 states and 24376 transitions. Word has length 864 [2023-12-20 17:21:54,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:54,115 INFO L495 AbstractCegarLoop]: Abstraction has 23144 states and 24376 transitions. [2023-12-20 17:21:54,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:54,115 INFO L276 IsEmpty]: Start isEmpty. Operand 23144 states and 24376 transitions. [2023-12-20 17:21:54,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2023-12-20 17:21:54,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:54,124 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 17:21:54,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 17:21:54,124 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:54,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:54,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1783888980, now seen corresponding path program 1 times [2023-12-20 17:21:54,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:54,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268041794] [2023-12-20 17:21:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:54,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:55,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1481 backedges. 842 proven. 188 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-12-20 17:21:55,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:21:55,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268041794] [2023-12-20 17:21:55,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268041794] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:21:55,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638002618] [2023-12-20 17:21:55,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:55,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:21:55,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:21:55,345 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:21:55,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 17:21:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:21:55,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-20 17:21:55,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:21:56,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1481 backedges. 1239 proven. 2 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-20 17:21:56,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:21:57,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1481 backedges. 1090 proven. 0 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2023-12-20 17:21:57,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638002618] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:21:57,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:21:57,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 9 [2023-12-20 17:21:57,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709383657] [2023-12-20 17:21:57,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:21:57,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:21:57,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:21:57,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:21:57,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:21:57,278 INFO L87 Difference]: Start difference. First operand 23144 states and 24376 transitions. Second operand has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:58,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:21:58,518 INFO L93 Difference]: Finished difference Result 47847 states and 50395 transitions. [2023-12-20 17:21:58,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 17:21:58,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 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 883 [2023-12-20 17:21:58,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:21:58,541 INFO L225 Difference]: With dead ends: 47847 [2023-12-20 17:21:58,541 INFO L226 Difference]: Without dead ends: 25003 [2023-12-20 17:21:58,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1770 GetRequests, 1762 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-20 17:21:58,555 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 413 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:21:58,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 539 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 17:21:58,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25003 states. [2023-12-20 17:21:58,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25003 to 24639. [2023-12-20 17:21:58,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24639 states, 24638 states have (on average 1.0518305057228672) internal successors, (25915), 24638 states have internal predecessors, (25915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:58,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24639 states to 24639 states and 25915 transitions. [2023-12-20 17:21:58,755 INFO L78 Accepts]: Start accepts. Automaton has 24639 states and 25915 transitions. Word has length 883 [2023-12-20 17:21:58,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:21:58,755 INFO L495 AbstractCegarLoop]: Abstraction has 24639 states and 25915 transitions. [2023-12-20 17:21:58,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:21:58,755 INFO L276 IsEmpty]: Start isEmpty. Operand 24639 states and 25915 transitions. [2023-12-20 17:21:58,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2023-12-20 17:21:58,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:21:58,766 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:21:58,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 17:21:58,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 17:21:58,970 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:21:58,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:21:58,971 INFO L85 PathProgramCache]: Analyzing trace with hash -787492648, now seen corresponding path program 1 times [2023-12-20 17:21:58,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:21:58,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662898438] [2023-12-20 17:21:58,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:21:58,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:21:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:00,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1497 backedges. 850 proven. 188 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2023-12-20 17:22:00,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:22:00,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662898438] [2023-12-20 17:22:00,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662898438] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:22:00,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200552006] [2023-12-20 17:22:00,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:00,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:22:00,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:22:00,061 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:22:00,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 17:22:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:00,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:22:00,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:22:00,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1497 backedges. 767 proven. 0 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2023-12-20 17:22:00,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:22:00,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200552006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:22:00,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:22:00,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-12-20 17:22:00,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345210292] [2023-12-20 17:22:00,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:22:00,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:22:00,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:22:00,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:22:00,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:22:00,974 INFO L87 Difference]: Start difference. First operand 24639 states and 25915 transitions. Second operand has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:02,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:22:02,716 INFO L93 Difference]: Finished difference Result 58569 states and 61507 transitions. [2023-12-20 17:22:02,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:22:02,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 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 889 [2023-12-20 17:22:02,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:22:02,749 INFO L225 Difference]: With dead ends: 58569 [2023-12-20 17:22:02,749 INFO L226 Difference]: Without dead ends: 33632 [2023-12-20 17:22:02,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 887 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:22:02,764 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 526 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:22:02,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 138 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 17:22:02,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33632 states. [2023-12-20 17:22:02,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33632 to 28535. [2023-12-20 17:22:02,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28535 states, 28534 states have (on average 1.0517277633700146) internal successors, (30010), 28534 states have internal predecessors, (30010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:03,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28535 states to 28535 states and 30010 transitions. [2023-12-20 17:22:03,027 INFO L78 Accepts]: Start accepts. Automaton has 28535 states and 30010 transitions. Word has length 889 [2023-12-20 17:22:03,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:22:03,028 INFO L495 AbstractCegarLoop]: Abstraction has 28535 states and 30010 transitions. [2023-12-20 17:22:03,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 28535 states and 30010 transitions. [2023-12-20 17:22:03,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 919 [2023-12-20 17:22:03,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:22:03,039 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:22:03,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 17:22:03,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:22:03,239 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:22:03,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:22:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash 934570483, now seen corresponding path program 1 times [2023-12-20 17:22:03,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:22:03,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617873967] [2023-12-20 17:22:03,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:03,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:22:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 912 proven. 188 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2023-12-20 17:22:04,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:22:04,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617873967] [2023-12-20 17:22:04,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617873967] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:22:04,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174353740] [2023-12-20 17:22:04,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:04,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:22:04,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:22:04,480 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:22:04,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 17:22:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:04,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:22:04,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:22:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 782 proven. 0 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2023-12-20 17:22:05,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:22:05,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174353740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:22:05,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:22:05,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-12-20 17:22:05,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772512050] [2023-12-20 17:22:05,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:22:05,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:22:05,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:22:05,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:22:05,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:22:05,364 INFO L87 Difference]: Start difference. First operand 28535 states and 30010 transitions. Second operand has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:07,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:22:07,066 INFO L93 Difference]: Finished difference Result 62770 states and 65867 transitions. [2023-12-20 17:22:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:22:07,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 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 918 [2023-12-20 17:22:07,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:22:07,099 INFO L225 Difference]: With dead ends: 62770 [2023-12-20 17:22:07,099 INFO L226 Difference]: Without dead ends: 33937 [2023-12-20 17:22:07,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 921 GetRequests, 916 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:22:07,119 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 526 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:22:07,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 138 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:22:07,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33937 states. [2023-12-20 17:22:07,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33937 to 27937. [2023-12-20 17:22:07,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27937 states, 27936 states have (on average 1.052405498281787) internal successors, (29400), 27936 states have internal predecessors, (29400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:07,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27937 states to 27937 states and 29400 transitions. [2023-12-20 17:22:07,404 INFO L78 Accepts]: Start accepts. Automaton has 27937 states and 29400 transitions. Word has length 918 [2023-12-20 17:22:07,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:22:07,405 INFO L495 AbstractCegarLoop]: Abstraction has 27937 states and 29400 transitions. [2023-12-20 17:22:07,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:07,405 INFO L276 IsEmpty]: Start isEmpty. Operand 27937 states and 29400 transitions. [2023-12-20 17:22:07,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1002 [2023-12-20 17:22:07,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:22:07,418 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:22:07,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 17:22:07,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 17:22:07,619 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:22:07,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:22:07,619 INFO L85 PathProgramCache]: Analyzing trace with hash -732252364, now seen corresponding path program 1 times [2023-12-20 17:22:07,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:22:07,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047752868] [2023-12-20 17:22:07,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:07,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:22:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1647 backedges. 1062 proven. 105 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-20 17:22:08,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:22:08,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047752868] [2023-12-20 17:22:08,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047752868] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:22:08,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508836072] [2023-12-20 17:22:08,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:08,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:22:08,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:22:08,515 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:22:08,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 17:22:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:08,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:22:08,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:22:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1647 backedges. 678 proven. 0 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2023-12-20 17:22:09,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:22:09,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508836072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:22:09,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:22:09,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-12-20 17:22:09,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622884051] [2023-12-20 17:22:09,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:22:09,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:22:09,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:22:09,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:22:09,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:22:09,009 INFO L87 Difference]: Start difference. First operand 27937 states and 29400 transitions. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:10,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:22:10,662 INFO L93 Difference]: Finished difference Result 64866 states and 68014 transitions. [2023-12-20 17:22:10,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:22:10,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1001 [2023-12-20 17:22:10,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:22:10,698 INFO L225 Difference]: With dead ends: 64866 [2023-12-20 17:22:10,698 INFO L226 Difference]: Without dead ends: 36930 [2023-12-20 17:22:10,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1005 GetRequests, 1000 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:22:10,716 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 563 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:22:10,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 134 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:22:10,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36930 states. [2023-12-20 17:22:10,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36930 to 29733. [2023-12-20 17:22:11,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29733 states, 29732 states have (on average 1.0507870308085565) internal successors, (31242), 29732 states have internal predecessors, (31242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:11,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29733 states to 29733 states and 31242 transitions. [2023-12-20 17:22:11,048 INFO L78 Accepts]: Start accepts. Automaton has 29733 states and 31242 transitions. Word has length 1001 [2023-12-20 17:22:11,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:22:11,049 INFO L495 AbstractCegarLoop]: Abstraction has 29733 states and 31242 transitions. [2023-12-20 17:22:11,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:11,049 INFO L276 IsEmpty]: Start isEmpty. Operand 29733 states and 31242 transitions. [2023-12-20 17:22:11,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1040 [2023-12-20 17:22:11,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:22:11,067 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:22:11,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-20 17:22:11,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 17:22:11,268 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:22:11,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:22:11,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1952619527, now seen corresponding path program 1 times [2023-12-20 17:22:11,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:22:11,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073439764] [2023-12-20 17:22:11,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:11,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:22:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 700 proven. 707 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2023-12-20 17:22:12,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:22:12,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073439764] [2023-12-20 17:22:12,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073439764] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:22:12,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576601945] [2023-12-20 17:22:12,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:12,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:22:12,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:22:12,906 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:22:12,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 17:22:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:13,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:22:13,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:22:13,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 1138 proven. 0 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2023-12-20 17:22:13,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:22:13,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576601945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:22:13,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:22:13,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-20 17:22:13,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718311955] [2023-12-20 17:22:13,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:22:13,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:22:13,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:22:13,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:22:13,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:22:13,670 INFO L87 Difference]: Start difference. First operand 29733 states and 31242 transitions. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:14,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:22:14,649 INFO L93 Difference]: Finished difference Result 58862 states and 61876 transitions. [2023-12-20 17:22:14,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:22:14,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 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 1039 [2023-12-20 17:22:14,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:22:14,679 INFO L225 Difference]: With dead ends: 58862 [2023-12-20 17:22:14,679 INFO L226 Difference]: Without dead ends: 29429 [2023-12-20 17:22:14,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1043 GetRequests, 1039 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:22:14,698 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 129 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:22:14,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 523 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 17:22:14,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29429 states. [2023-12-20 17:22:14,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29429 to 29428. [2023-12-20 17:22:14,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29428 states, 29427 states have (on average 1.043293573928705) internal successors, (30701), 29427 states have internal predecessors, (30701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:14,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29428 states to 29428 states and 30701 transitions. [2023-12-20 17:22:14,963 INFO L78 Accepts]: Start accepts. Automaton has 29428 states and 30701 transitions. Word has length 1039 [2023-12-20 17:22:14,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:22:14,963 INFO L495 AbstractCegarLoop]: Abstraction has 29428 states and 30701 transitions. [2023-12-20 17:22:14,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:14,963 INFO L276 IsEmpty]: Start isEmpty. Operand 29428 states and 30701 transitions. [2023-12-20 17:22:14,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1053 [2023-12-20 17:22:14,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:22:14,981 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:22:14,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 17:22:15,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:22:15,191 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:22:15,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:22:15,192 INFO L85 PathProgramCache]: Analyzing trace with hash 179142506, now seen corresponding path program 1 times [2023-12-20 17:22:15,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:22:15,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931654556] [2023-12-20 17:22:15,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:15,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:22:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 1338 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2023-12-20 17:22:15,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:22:15,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931654556] [2023-12-20 17:22:15,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931654556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:22:15,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:22:15,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:22:15,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250563705] [2023-12-20 17:22:15,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:22:15,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:22:15,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:22:15,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:22:15,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:22:15,555 INFO L87 Difference]: Start difference. First operand 29428 states and 30701 transitions. Second operand has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:16,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:22:16,748 INFO L93 Difference]: Finished difference Result 67544 states and 70449 transitions. [2023-12-20 17:22:16,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:22:16,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1052 [2023-12-20 17:22:16,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:22:16,782 INFO L225 Difference]: With dead ends: 67544 [2023-12-20 17:22:16,782 INFO L226 Difference]: Without dead ends: 38416 [2023-12-20 17:22:16,796 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 17:22:16,796 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 54 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:22:16,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 542 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 17:22:16,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38416 states. [2023-12-20 17:22:17,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38416 to 36008. [2023-12-20 17:22:17,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36008 states, 36007 states have (on average 1.0402699475102064) internal successors, (37457), 36007 states have internal predecessors, (37457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:17,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36008 states to 36008 states and 37457 transitions. [2023-12-20 17:22:17,121 INFO L78 Accepts]: Start accepts. Automaton has 36008 states and 37457 transitions. Word has length 1052 [2023-12-20 17:22:17,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:22:17,122 INFO L495 AbstractCegarLoop]: Abstraction has 36008 states and 37457 transitions. [2023-12-20 17:22:17,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:17,122 INFO L276 IsEmpty]: Start isEmpty. Operand 36008 states and 37457 transitions. [2023-12-20 17:22:17,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2023-12-20 17:22:17,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:22:17,139 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:22:17,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-20 17:22:17,139 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:22:17,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:22:17,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1111757268, now seen corresponding path program 1 times [2023-12-20 17:22:17,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:22:17,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47944378] [2023-12-20 17:22:17,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:17,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:22:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:17,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2243 backedges. 1222 proven. 0 refuted. 0 times theorem prover too weak. 1021 trivial. 0 not checked. [2023-12-20 17:22:17,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:22:17,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47944378] [2023-12-20 17:22:17,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47944378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:22:17,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:22:17,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:22:17,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606994664] [2023-12-20 17:22:17,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:22:17,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:22:17,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:22:17,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:22:17,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:22:17,715 INFO L87 Difference]: Start difference. First operand 36008 states and 37457 transitions. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:19,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:22:19,102 INFO L93 Difference]: Finished difference Result 81318 states and 84539 transitions. [2023-12-20 17:22:19,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:22:19,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 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 1125 [2023-12-20 17:22:19,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:22:19,140 INFO L225 Difference]: With dead ends: 81318 [2023-12-20 17:22:19,140 INFO L226 Difference]: Without dead ends: 45610 [2023-12-20 17:22:19,158 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 17:22:19,159 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 260 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:22:19,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 141 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 17:22:19,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45610 states. [2023-12-20 17:22:19,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45610 to 41703. [2023-12-20 17:22:19,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41703 states, 41702 states have (on average 1.0381036880725145) internal successors, (43291), 41702 states have internal predecessors, (43291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:19,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41703 states to 41703 states and 43291 transitions. [2023-12-20 17:22:19,536 INFO L78 Accepts]: Start accepts. Automaton has 41703 states and 43291 transitions. Word has length 1125 [2023-12-20 17:22:19,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:22:19,537 INFO L495 AbstractCegarLoop]: Abstraction has 41703 states and 43291 transitions. [2023-12-20 17:22:19,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:19,537 INFO L276 IsEmpty]: Start isEmpty. Operand 41703 states and 43291 transitions. [2023-12-20 17:22:19,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1141 [2023-12-20 17:22:19,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:22:19,555 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:22:19,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-20 17:22:19,555 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:22:19,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:22:19,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2027626393, now seen corresponding path program 1 times [2023-12-20 17:22:19,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:22:19,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505222191] [2023-12-20 17:22:19,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:19,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:22:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:20,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 1165 proven. 269 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2023-12-20 17:22:20,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:22:20,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505222191] [2023-12-20 17:22:20,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505222191] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:22:20,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187693808] [2023-12-20 17:22:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:20,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:22:20,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:22:20,924 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:22:20,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 17:22:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:21,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:22:21,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:22:21,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 1062 proven. 0 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2023-12-20 17:22:21,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:22:21,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187693808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:22:21,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:22:21,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-12-20 17:22:21,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921292098] [2023-12-20 17:22:21,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:22:21,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:22:21,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:22:21,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:22:21,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:22:21,982 INFO L87 Difference]: Start difference. First operand 41703 states and 43291 transitions. Second operand has 4 states, 4 states have (on average 153.25) internal successors, (613), 4 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:23,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:22:23,970 INFO L93 Difference]: Finished difference Result 92097 states and 95472 transitions. [2023-12-20 17:22:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:22:23,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 153.25) internal successors, (613), 4 states have internal predecessors, (613), 0 states have call successors, (0), 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 1140 [2023-12-20 17:22:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:22:24,022 INFO L225 Difference]: With dead ends: 92097 [2023-12-20 17:22:24,023 INFO L226 Difference]: Without dead ends: 50395 [2023-12-20 17:22:24,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1143 GetRequests, 1138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:22:24,052 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 388 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:22:24,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 141 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:22:24,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50395 states. [2023-12-20 17:22:24,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50395 to 41703. [2023-12-20 17:22:24,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41703 states, 41702 states have (on average 1.0381036880725145) internal successors, (43291), 41702 states have internal predecessors, (43291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41703 states to 41703 states and 43291 transitions. [2023-12-20 17:22:24,491 INFO L78 Accepts]: Start accepts. Automaton has 41703 states and 43291 transitions. Word has length 1140 [2023-12-20 17:22:24,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:22:24,492 INFO L495 AbstractCegarLoop]: Abstraction has 41703 states and 43291 transitions. [2023-12-20 17:22:24,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.25) internal successors, (613), 4 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:24,492 INFO L276 IsEmpty]: Start isEmpty. Operand 41703 states and 43291 transitions. [2023-12-20 17:22:24,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1178 [2023-12-20 17:22:24,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:22:24,511 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:22:24,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 17:22:24,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-20 17:22:24,712 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:22:24,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:22:24,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1453851240, now seen corresponding path program 1 times [2023-12-20 17:22:24,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:22:24,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293825900] [2023-12-20 17:22:24,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:24,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:22:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2068 backedges. 1396 proven. 192 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-20 17:22:25,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:22:25,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293825900] [2023-12-20 17:22:25,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293825900] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:22:25,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377938029] [2023-12-20 17:22:25,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:25,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:22:25,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:22:25,761 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:22:25,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 17:22:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:26,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:22:26,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:22:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2068 backedges. 1099 proven. 0 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2023-12-20 17:22:26,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:22:26,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377938029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:22:26,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:22:26,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-12-20 17:22:26,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099605075] [2023-12-20 17:22:26,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:22:26,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:22:26,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:22:26,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:22:26,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:22:26,926 INFO L87 Difference]: Start difference. First operand 41703 states and 43291 transitions. Second operand has 4 states, 4 states have (on average 153.25) internal successors, (613), 4 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:28,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:22:28,934 INFO L93 Difference]: Finished difference Result 90003 states and 93324 transitions. [2023-12-20 17:22:28,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:22:28,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 153.25) internal successors, (613), 4 states have internal predecessors, (613), 0 states have call successors, (0), 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 1177 [2023-12-20 17:22:28,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:22:28,977 INFO L225 Difference]: With dead ends: 90003 [2023-12-20 17:22:28,977 INFO L226 Difference]: Without dead ends: 47105 [2023-12-20 17:22:29,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1181 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:22:29,001 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 397 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:22:29,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 133 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 17:22:29,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47105 states. [2023-12-20 17:22:29,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47105 to 33919. [2023-12-20 17:22:29,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33919 states, 33918 states have (on average 1.0415118815967923) internal successors, (35326), 33918 states have internal predecessors, (35326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:29,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33919 states to 33919 states and 35326 transitions. [2023-12-20 17:22:29,393 INFO L78 Accepts]: Start accepts. Automaton has 33919 states and 35326 transitions. Word has length 1177 [2023-12-20 17:22:29,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:22:29,393 INFO L495 AbstractCegarLoop]: Abstraction has 33919 states and 35326 transitions. [2023-12-20 17:22:29,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.25) internal successors, (613), 4 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:29,394 INFO L276 IsEmpty]: Start isEmpty. Operand 33919 states and 35326 transitions. [2023-12-20 17:22:29,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1207 [2023-12-20 17:22:29,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:22:29,540 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-20 17:22:29,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-20 17:22:29,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-20 17:22:29,741 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:22:29,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:22:29,741 INFO L85 PathProgramCache]: Analyzing trace with hash -365855719, now seen corresponding path program 1 times [2023-12-20 17:22:29,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:22:29,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134436308] [2023-12-20 17:22:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:29,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:22:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2770 backedges. 1090 proven. 0 refuted. 0 times theorem prover too weak. 1680 trivial. 0 not checked. [2023-12-20 17:22:31,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:22:31,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134436308] [2023-12-20 17:22:31,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134436308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:22:31,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:22:31,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 17:22:31,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112657438] [2023-12-20 17:22:31,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:22:31,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 17:22:31,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:22:31,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 17:22:31,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:22:31,889 INFO L87 Difference]: Start difference. First operand 33919 states and 35326 transitions. Second operand has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:33,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:22:33,833 INFO L93 Difference]: Finished difference Result 69117 states and 71949 transitions. [2023-12-20 17:22:33,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 17:22:33,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 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 1206 [2023-12-20 17:22:33,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:22:33,868 INFO L225 Difference]: With dead ends: 69117 [2023-12-20 17:22:33,868 INFO L226 Difference]: Without dead ends: 35498 [2023-12-20 17:22:33,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:22:33,888 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 768 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:22:33,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 581 Invalid, 2927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2735 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:22:33,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35498 states. [2023-12-20 17:22:34,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35498 to 33919. [2023-12-20 17:22:34,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33919 states, 33918 states have (on average 1.0406568783536765) internal successors, (35297), 33918 states have internal predecessors, (35297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:34,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33919 states to 33919 states and 35297 transitions. [2023-12-20 17:22:34,206 INFO L78 Accepts]: Start accepts. Automaton has 33919 states and 35297 transitions. Word has length 1206 [2023-12-20 17:22:34,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:22:34,207 INFO L495 AbstractCegarLoop]: Abstraction has 33919 states and 35297 transitions. [2023-12-20 17:22:34,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:34,208 INFO L276 IsEmpty]: Start isEmpty. Operand 33919 states and 35297 transitions. [2023-12-20 17:22:34,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1273 [2023-12-20 17:22:34,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:22:34,241 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:22:34,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-20 17:22:34,242 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:22:34,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:22:34,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1432518295, now seen corresponding path program 1 times [2023-12-20 17:22:34,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:22:34,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139593654] [2023-12-20 17:22:34,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:34,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:22:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:34,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3257 backedges. 2198 proven. 0 refuted. 0 times theorem prover too weak. 1059 trivial. 0 not checked. [2023-12-20 17:22:34,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:22:34,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139593654] [2023-12-20 17:22:34,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139593654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:22:34,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:22:34,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:22:34,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130145304] [2023-12-20 17:22:34,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:22:34,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:22:34,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:22:34,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:22:34,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:22:34,981 INFO L87 Difference]: Start difference. First operand 33919 states and 35297 transitions. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:36,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:22:36,242 INFO L93 Difference]: Finished difference Result 71749 states and 74614 transitions. [2023-12-20 17:22:36,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:22:36,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1272 [2023-12-20 17:22:36,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:22:36,280 INFO L225 Difference]: With dead ends: 71749 [2023-12-20 17:22:36,280 INFO L226 Difference]: Without dead ends: 38130 [2023-12-20 17:22:36,299 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 17:22:36,299 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 224 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:22:36,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 156 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 17:22:36,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38130 states. [2023-12-20 17:22:36,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38130 to 33617. [2023-12-20 17:22:36,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33617 states, 33616 states have (on average 1.0403676820561638) internal successors, (34973), 33616 states have internal predecessors, (34973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:36,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33617 states to 33617 states and 34973 transitions. [2023-12-20 17:22:36,608 INFO L78 Accepts]: Start accepts. Automaton has 33617 states and 34973 transitions. Word has length 1272 [2023-12-20 17:22:36,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:22:36,608 INFO L495 AbstractCegarLoop]: Abstraction has 33617 states and 34973 transitions. [2023-12-20 17:22:36,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:36,608 INFO L276 IsEmpty]: Start isEmpty. Operand 33617 states and 34973 transitions. [2023-12-20 17:22:36,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1441 [2023-12-20 17:22:36,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:22:36,632 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 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 17:22:36,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-20 17:22:36,632 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:22:36,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:22:36,633 INFO L85 PathProgramCache]: Analyzing trace with hash -977879465, now seen corresponding path program 1 times [2023-12-20 17:22:36,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:22:36,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109202509] [2023-12-20 17:22:36,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:36,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:22:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3774 backedges. 2144 proven. 0 refuted. 0 times theorem prover too weak. 1630 trivial. 0 not checked. [2023-12-20 17:22:37,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:22:37,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109202509] [2023-12-20 17:22:37,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109202509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:22:37,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:22:37,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:22:37,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296117674] [2023-12-20 17:22:37,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:22:37,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:22:37,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:22:37,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:22:37,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:22:37,388 INFO L87 Difference]: Start difference. First operand 33617 states and 34973 transitions. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:38,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:22:38,502 INFO L93 Difference]: Finished difference Result 70525 states and 73308 transitions. [2023-12-20 17:22:38,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:22:38,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 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 1440 [2023-12-20 17:22:38,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:22:38,536 INFO L225 Difference]: With dead ends: 70525 [2023-12-20 17:22:38,536 INFO L226 Difference]: Without dead ends: 37208 [2023-12-20 17:22:38,554 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 17:22:38,554 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 337 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:22:38,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 469 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 17:22:38,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37208 states. [2023-12-20 17:22:38,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37208 to 34804. [2023-12-20 17:22:39,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34804 states, 34803 states have (on average 1.0371519696577882) internal successors, (36096), 34803 states have internal predecessors, (36096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:39,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34804 states to 34804 states and 36096 transitions. [2023-12-20 17:22:39,055 INFO L78 Accepts]: Start accepts. Automaton has 34804 states and 36096 transitions. Word has length 1440 [2023-12-20 17:22:39,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:22:39,056 INFO L495 AbstractCegarLoop]: Abstraction has 34804 states and 36096 transitions. [2023-12-20 17:22:39,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:39,056 INFO L276 IsEmpty]: Start isEmpty. Operand 34804 states and 36096 transitions. [2023-12-20 17:22:39,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1549 [2023-12-20 17:22:39,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:22:39,081 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 17:22:39,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-20 17:22:39,082 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:22:39,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:22:39,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1027375999, now seen corresponding path program 1 times [2023-12-20 17:22:39,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:22:39,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041006088] [2023-12-20 17:22:39,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:39,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:22:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:40,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4924 backedges. 2612 proven. 0 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2023-12-20 17:22:40,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:22:40,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041006088] [2023-12-20 17:22:40,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041006088] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:22:40,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:22:40,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 17:22:40,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224607937] [2023-12-20 17:22:40,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:22:40,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 17:22:40,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:22:40,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 17:22:40,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:22:40,636 INFO L87 Difference]: Start difference. First operand 34804 states and 36096 transitions. Second operand has 6 states, 6 states have (on average 125.83333333333333) internal successors, (755), 6 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:43,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:22:43,218 INFO L93 Difference]: Finished difference Result 72359 states and 75000 transitions. [2023-12-20 17:22:43,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 17:22:43,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 125.83333333333333) internal successors, (755), 6 states have internal predecessors, (755), 0 states have call successors, (0), 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 1548 [2023-12-20 17:22:43,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:22:43,254 INFO L225 Difference]: With dead ends: 72359 [2023-12-20 17:22:43,254 INFO L226 Difference]: Without dead ends: 37855 [2023-12-20 17:22:43,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:22:43,271 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 1846 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 2573 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1846 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 3072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 2573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:22:43,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1846 Valid, 182 Invalid, 3072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 2573 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:22:43,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37855 states. [2023-12-20 17:22:43,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37855 to 35102. [2023-12-20 17:22:43,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35102 states, 35101 states have (on average 1.0361243269422524) internal successors, (36369), 35101 states have internal predecessors, (36369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:43,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35102 states to 35102 states and 36369 transitions. [2023-12-20 17:22:43,726 INFO L78 Accepts]: Start accepts. Automaton has 35102 states and 36369 transitions. Word has length 1548 [2023-12-20 17:22:43,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:22:43,726 INFO L495 AbstractCegarLoop]: Abstraction has 35102 states and 36369 transitions. [2023-12-20 17:22:43,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.83333333333333) internal successors, (755), 6 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:43,727 INFO L276 IsEmpty]: Start isEmpty. Operand 35102 states and 36369 transitions. [2023-12-20 17:22:43,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1766 [2023-12-20 17:22:43,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:22:43,758 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 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] [2023-12-20 17:22:43,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-20 17:22:43,758 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:22:43,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:22:43,758 INFO L85 PathProgramCache]: Analyzing trace with hash -497237571, now seen corresponding path program 1 times [2023-12-20 17:22:43,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:22:43,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79064984] [2023-12-20 17:22:43,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:43,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:22:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7975 backedges. 4427 proven. 0 refuted. 0 times theorem prover too weak. 3548 trivial. 0 not checked. [2023-12-20 17:22:44,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:22:44,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79064984] [2023-12-20 17:22:44,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79064984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:22:44,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:22:44,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:22:44,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502775661] [2023-12-20 17:22:44,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:22:44,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:22:44,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:22:44,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:22:44,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:22:44,695 INFO L87 Difference]: Start difference. First operand 35102 states and 36369 transitions. Second operand has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:46,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:22:46,326 INFO L93 Difference]: Finished difference Result 70798 states and 73169 transitions. [2023-12-20 17:22:46,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:22:46,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 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 1765 [2023-12-20 17:22:46,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:22:46,354 INFO L225 Difference]: With dead ends: 70798 [2023-12-20 17:22:46,354 INFO L226 Difference]: Without dead ends: 33004 [2023-12-20 17:22:46,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:22:46,376 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 603 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:22:46,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 455 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:22:46,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33004 states. [2023-12-20 17:22:46,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33004 to 26999. [2023-12-20 17:22:46,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26999 states, 26998 states have (on average 1.02840951181569) internal successors, (27765), 26998 states have internal predecessors, (27765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:46,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26999 states to 26999 states and 27765 transitions. [2023-12-20 17:22:46,661 INFO L78 Accepts]: Start accepts. Automaton has 26999 states and 27765 transitions. Word has length 1765 [2023-12-20 17:22:46,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:22:46,662 INFO L495 AbstractCegarLoop]: Abstraction has 26999 states and 27765 transitions. [2023-12-20 17:22:46,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:46,662 INFO L276 IsEmpty]: Start isEmpty. Operand 26999 states and 27765 transitions. [2023-12-20 17:22:46,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1802 [2023-12-20 17:22:46,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:22:46,691 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:22:46,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-20 17:22:46,691 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:22:46,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:22:46,692 INFO L85 PathProgramCache]: Analyzing trace with hash 730416494, now seen corresponding path program 1 times [2023-12-20 17:22:46,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:22:46,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010510846] [2023-12-20 17:22:46,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:46,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:22:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:47,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8022 backedges. 4020 proven. 0 refuted. 0 times theorem prover too weak. 4002 trivial. 0 not checked. [2023-12-20 17:22:47,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:22:47,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010510846] [2023-12-20 17:22:47,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010510846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:22:47,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:22:47,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:22:47,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421419378] [2023-12-20 17:22:47,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:22:47,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:22:47,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:22:47,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:22:47,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:22:47,434 INFO L87 Difference]: Start difference. First operand 26999 states and 27765 transitions. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:48,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:22:48,496 INFO L93 Difference]: Finished difference Result 54593 states and 56133 transitions. [2023-12-20 17:22:48,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:22:48,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 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 1801 [2023-12-20 17:22:48,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:22:48,521 INFO L225 Difference]: With dead ends: 54593 [2023-12-20 17:22:48,521 INFO L226 Difference]: Without dead ends: 25502 [2023-12-20 17:22:48,537 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 17:22:48,537 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 209 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:22:48,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 211 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 17:22:48,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25502 states. [2023-12-20 17:22:48,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25502 to 21910. [2023-12-20 17:22:48,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21910 states, 21909 states have (on average 1.0214067278287462) internal successors, (22378), 21909 states have internal predecessors, (22378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:48,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21910 states to 21910 states and 22378 transitions. [2023-12-20 17:22:48,753 INFO L78 Accepts]: Start accepts. Automaton has 21910 states and 22378 transitions. Word has length 1801 [2023-12-20 17:22:48,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:22:48,753 INFO L495 AbstractCegarLoop]: Abstraction has 21910 states and 22378 transitions. [2023-12-20 17:22:48,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:48,754 INFO L276 IsEmpty]: Start isEmpty. Operand 21910 states and 22378 transitions. [2023-12-20 17:22:48,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1857 [2023-12-20 17:22:48,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:22:48,784 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:22:48,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-20 17:22:48,784 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:22:48,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:22:48,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1367591953, now seen corresponding path program 1 times [2023-12-20 17:22:48,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:22:48,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936761793] [2023-12-20 17:22:48,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:48,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:22:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 7681 backedges. 3727 proven. 0 refuted. 0 times theorem prover too weak. 3954 trivial. 0 not checked. [2023-12-20 17:22:50,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:22:50,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936761793] [2023-12-20 17:22:50,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936761793] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:22:50,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:22:50,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:22:50,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602986576] [2023-12-20 17:22:50,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:22:50,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:22:50,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:22:50,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:22:50,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:22:50,166 INFO L87 Difference]: Start difference. First operand 21910 states and 22378 transitions. Second operand has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:51,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:22:51,031 INFO L93 Difference]: Finished difference Result 43819 states and 44742 transitions. [2023-12-20 17:22:51,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:22:51,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 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 1856 [2023-12-20 17:22:51,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:22:51,051 INFO L225 Difference]: With dead ends: 43819 [2023-12-20 17:22:51,051 INFO L226 Difference]: Without dead ends: 22209 [2023-12-20 17:22:51,063 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 17:22:51,064 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 148 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:22:51,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 98 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 17:22:51,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22209 states. [2023-12-20 17:22:51,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22209 to 17410. [2023-12-20 17:22:51,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17410 states, 17409 states have (on average 1.0200471020736401) internal successors, (17758), 17409 states have internal predecessors, (17758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17410 states to 17410 states and 17758 transitions. [2023-12-20 17:22:51,228 INFO L78 Accepts]: Start accepts. Automaton has 17410 states and 17758 transitions. Word has length 1856 [2023-12-20 17:22:51,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:22:51,229 INFO L495 AbstractCegarLoop]: Abstraction has 17410 states and 17758 transitions. [2023-12-20 17:22:51,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:51,229 INFO L276 IsEmpty]: Start isEmpty. Operand 17410 states and 17758 transitions. [2023-12-20 17:22:51,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2193 [2023-12-20 17:22:51,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:22:51,264 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:22:51,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-20 17:22:51,264 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:22:51,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:22:51,265 INFO L85 PathProgramCache]: Analyzing trace with hash -665786486, now seen corresponding path program 1 times [2023-12-20 17:22:51,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:22:51,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210742202] [2023-12-20 17:22:51,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:51,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:22:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:52,535 INFO L134 CoverageAnalysis]: Checked inductivity of 10379 backedges. 7085 proven. 405 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2023-12-20 17:22:52,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:22:52,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210742202] [2023-12-20 17:22:52,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210742202] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:22:52,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679992412] [2023-12-20 17:22:52,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:22:52,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:22:52,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:22:52,537 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:22:52,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 17:22:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:22:53,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 2528 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 17:22:53,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:22:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 10379 backedges. 7085 proven. 405 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2023-12-20 17:22:53,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:22:54,475 INFO L134 CoverageAnalysis]: Checked inductivity of 10379 backedges. 7085 proven. 405 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2023-12-20 17:22:54,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679992412] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 17:22:54,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 17:22:54,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-12-20 17:22:54,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283493176] [2023-12-20 17:22:54,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 17:22:54,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 17:22:54,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:22:54,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 17:22:54,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:22:54,479 INFO L87 Difference]: Start difference. First operand 17410 states and 17758 transitions. Second operand has 6 states, 6 states have (on average 225.83333333333334) internal successors, (1355), 6 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:56,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:22:56,004 INFO L93 Difference]: Finished difference Result 33620 states and 34296 transitions. [2023-12-20 17:22:56,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 17:22:56,005 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 225.83333333333334) internal successors, (1355), 6 states have internal predecessors, (1355), 0 states have call successors, (0), 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 2192 [2023-12-20 17:22:56,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:22:56,006 INFO L225 Difference]: With dead ends: 33620 [2023-12-20 17:22:56,006 INFO L226 Difference]: Without dead ends: 0 [2023-12-20 17:22:56,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4386 GetRequests, 4381 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:22:56,017 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 547 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 1836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:22:56,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 138 Invalid, 1836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:22:56,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-20 17:22:56,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-20 17:22:56,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:56,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-20 17:22:56,018 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2192 [2023-12-20 17:22:56,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:22:56,018 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-20 17:22:56,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 225.83333333333334) internal successors, (1355), 6 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:22:56,019 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-20 17:22:56,019 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-20 17:22:56,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 17:22:56,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-20 17:22:56,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-12-20 17:22:56,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-20 17:34:47,899 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 17:34:47,904 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-122-17-8-23-19-16-19-12-19-12-18-12-16-10-14-10-13-9-12-7-10-7-7-7-6-6-5-5-4-5-4-5-4-5-4-5-4-5-3-5-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-170-17-19-23-19-16-19-12-19-12-18-12-16-10-14-10-13-9-12-7-10-7-7-7-6-6-5-5-4-5-4-5-4-5-4-5-4-5-3-5-2-3-1 context. [2023-12-20 17:34:47,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-20 17:34:47,953 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-20 17:34:47,954 INFO L158 Benchmark]: Toolchain (without parser) took 834730.74ms. Allocated memory was 342.9MB in the beginning and 3.0GB in the end (delta: 2.7GB). Free memory was 285.9MB in the beginning and 2.0GB in the end (delta: -1.7GB). Peak memory consumption was 944.2MB. Max. memory is 8.0GB. [2023-12-20 17:34:47,955 INFO L158 Benchmark]: CDTParser took 0.87ms. Allocated memory is still 201.3MB. Free memory is still 151.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 17:34:47,955 INFO L158 Benchmark]: CACSL2BoogieTranslator took 895.35ms. Allocated memory is still 342.9MB. Free memory was 285.9MB in the beginning and 260.4MB in the end (delta: 25.5MB). Peak memory consumption was 41.4MB. Max. memory is 8.0GB. [2023-12-20 17:34:47,955 INFO L158 Benchmark]: Boogie Procedure Inliner took 201.60ms. Allocated memory is still 342.9MB. Free memory was 260.4MB in the beginning and 221.6MB in the end (delta: 38.8MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-12-20 17:34:47,955 INFO L158 Benchmark]: Boogie Preprocessor took 297.29ms. Allocated memory is still 342.9MB. Free memory was 221.6MB in the beginning and 244.3MB in the end (delta: -22.7MB). Peak memory consumption was 39.7MB. Max. memory is 8.0GB. [2023-12-20 17:34:47,955 INFO L158 Benchmark]: RCFGBuilder took 2505.99ms. Allocated memory was 342.9MB in the beginning and 505.4MB in the end (delta: 162.5MB). Free memory was 244.3MB in the beginning and 379.5MB in the end (delta: -135.2MB). Peak memory consumption was 94.0MB. Max. memory is 8.0GB. [2023-12-20 17:34:47,956 INFO L158 Benchmark]: TraceAbstraction took 830822.50ms. Allocated memory was 505.4MB in the beginning and 3.0GB in the end (delta: 2.5GB). Free memory was 379.0MB in the beginning and 2.0GB in the end (delta: -1.6GB). Peak memory consumption was 874.1MB. Max. memory is 8.0GB. [2023-12-20 17:34:47,957 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87ms. Allocated memory is still 201.3MB. Free memory is still 151.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 895.35ms. Allocated memory is still 342.9MB. Free memory was 285.9MB in the beginning and 260.4MB in the end (delta: 25.5MB). Peak memory consumption was 41.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 201.60ms. Allocated memory is still 342.9MB. Free memory was 260.4MB in the beginning and 221.6MB in the end (delta: 38.8MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 297.29ms. Allocated memory is still 342.9MB. Free memory was 221.6MB in the beginning and 244.3MB in the end (delta: -22.7MB). Peak memory consumption was 39.7MB. Max. memory is 8.0GB. * RCFGBuilder took 2505.99ms. Allocated memory was 342.9MB in the beginning and 505.4MB in the end (delta: 162.5MB). Free memory was 244.3MB in the beginning and 379.5MB in the end (delta: -135.2MB). Peak memory consumption was 94.0MB. Max. memory is 8.0GB. * TraceAbstraction took 830822.50ms. Allocated memory was 505.4MB in the beginning and 3.0GB in the end (delta: 2.5GB). Free memory was 379.0MB in the beginning and 2.0GB in the end (delta: -1.6GB). Peak memory consumption was 874.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-122-17-8-23-19-16-19-12-19-12-18-12-16-10-14-10-13-9-12-7-10-7-7-7-6-6-5-5-4-5-4-5-4-5-4-5-4-5-3-5-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-130-17-8-23-19-16-19-12-19-12-18-12-16-10-14-10-13-9-12-7-10-7-7-7-6-6-5-5-4-5-4-5-4-5-4-5-4-5-3-5-2-3-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown