/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 04:05:48,459 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 04:05:48,534 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 04:05:48,538 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 04:05:48,539 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 04:05:48,560 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 04:05:48,561 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 04:05:48,561 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 04:05:48,562 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 04:05:48,565 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 04:05:48,565 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 04:05:48,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 04:05:48,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 04:05:48,567 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 04:05:48,567 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 04:05:48,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 04:05:48,567 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 04:05:48,567 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 04:05:48,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 04:05:48,568 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 04:05:48,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 04:05:48,568 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 04:05:48,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 04:05:48,569 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 04:05:48,569 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 04:05:48,569 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 04:05:48,569 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 04:05:48,569 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 04:05:48,570 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 04:05:48,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 04:05:48,570 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 04:05:48,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 04:05:48,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:05:48,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 04:05:48,571 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 04:05:48,571 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 04:05:48,571 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 04:05:48,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 04:05:48,571 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 04:05:48,572 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 04:05:48,572 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 04:05:48,572 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 04:05:48,572 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 04:05:48,572 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 04:05:48,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 04:05:48,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 04:05:48,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 04:05:48,814 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 04:05:48,815 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 04:05:48,815 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label59.c [2023-12-19 04:05:49,987 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 04:05:50,345 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 04:05:50,346 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label59.c [2023-12-19 04:05:50,373 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e443adf29/a7c05ce09db34be382828caba345cb8a/FLAGbc4d1c96d [2023-12-19 04:05:50,386 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e443adf29/a7c05ce09db34be382828caba345cb8a [2023-12-19 04:05:50,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 04:05:50,389 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 04:05:50,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 04:05:50,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 04:05:50,394 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 04:05:50,395 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:05:50" (1/1) ... [2023-12-19 04:05:50,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a877ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:05:50, skipping insertion in model container [2023-12-19 04:05:50,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:05:50" (1/1) ... [2023-12-19 04:05:50,495 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 04:05:50,719 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label59.c[6607,6620] [2023-12-19 04:05:51,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:05:51,391 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 04:05:51,418 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label59.c[6607,6620] [2023-12-19 04:05:51,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:05:51,771 INFO L206 MainTranslator]: Completed translation [2023-12-19 04:05:51,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:05:51 WrapperNode [2023-12-19 04:05:51,772 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 04:05:51,773 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 04:05:51,773 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 04:05:51,773 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 04:05:51,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:05:51" (1/1) ... [2023-12-19 04:05:51,835 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:05:51" (1/1) ... [2023-12-19 04:05:52,250 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-19 04:05:52,250 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 04:05:52,251 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 04:05:52,251 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 04:05:52,251 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 04:05:52,259 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:05:51" (1/1) ... [2023-12-19 04:05:52,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:05:51" (1/1) ... [2023-12-19 04:05:52,353 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:05:51" (1/1) ... [2023-12-19 04:05:52,513 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]. [2023-12-19 04:05:52,514 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:05:51" (1/1) ... [2023-12-19 04:05:52,514 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:05:51" (1/1) ... [2023-12-19 04:05:52,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:05:51" (1/1) ... [2023-12-19 04:05:52,742 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:05:51" (1/1) ... [2023-12-19 04:05:52,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:05:51" (1/1) ... [2023-12-19 04:05:52,794 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:05:51" (1/1) ... [2023-12-19 04:05:52,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 04:05:52,876 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 04:05:52,876 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 04:05:52,877 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 04:05:52,878 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:05:51" (1/1) ... [2023-12-19 04:05:52,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:05:52,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:05:52,940 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) [2023-12-19 04:05:53,020 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 [2023-12-19 04:05:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 04:05:53,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 04:05:53,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 04:05:53,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 04:05:53,153 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 04:05:53,155 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 04:05:56,813 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 04:05:56,853 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 04:05:56,854 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 04:05:56,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:05:56 BoogieIcfgContainer [2023-12-19 04:05:56,854 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 04:05:56,856 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 04:05:56,856 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 04:05:56,858 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 04:05:56,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 04:05:50" (1/3) ... [2023-12-19 04:05:56,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2180e1af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:05:56, skipping insertion in model container [2023-12-19 04:05:56,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:05:51" (2/3) ... [2023-12-19 04:05:56,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2180e1af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:05:56, skipping insertion in model container [2023-12-19 04:05:56,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:05:56" (3/3) ... [2023-12-19 04:05:56,859 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label59.c [2023-12-19 04:05:56,870 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 04:05:56,870 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 04:05:56,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 04:05:56,954 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;@47b44176, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 04:05:56,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 04:05:56,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:05:56,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-19 04:05:56,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:56,965 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] [2023-12-19 04:05:56,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:56,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:56,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1485470434, now seen corresponding path program 1 times [2023-12-19 04:05:56,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:56,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319337957] [2023-12-19 04:05:56,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:56,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:57,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:05:57,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:57,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319337957] [2023-12-19 04:05:57,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319337957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:57,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:05:57,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:05:57,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571771352] [2023-12-19 04:05:57,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:57,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 04:05:57,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:57,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 04:05:57,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 04:05:57,107 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:05:57,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:57,168 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-19 04:05:57,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 04:05:57,170 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-19 04:05:57,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:57,183 INFO L225 Difference]: With dead ends: 2071 [2023-12-19 04:05:57,183 INFO L226 Difference]: Without dead ends: 1034 [2023-12-19 04:05:57,188 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 [2023-12-19 04:05:57,190 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:57,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 04:05:57,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-19 04:05:57,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-19 04:05:57,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:05:57,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-19 04:05:57,310 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 45 [2023-12-19 04:05:57,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:57,310 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-19 04:05:57,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:05:57,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-19 04:05:57,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-19 04:05:57,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:57,312 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] [2023-12-19 04:05:57,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 04:05:57,312 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:57,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:57,314 INFO L85 PathProgramCache]: Analyzing trace with hash -453512909, now seen corresponding path program 1 times [2023-12-19 04:05:57,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:57,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166350789] [2023-12-19 04:05:57,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:57,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:57,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:05:57,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:57,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166350789] [2023-12-19 04:05:57,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166350789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:57,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:05:57,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:05:57,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320602402] [2023-12-19 04:05:57,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:57,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:05:57,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:57,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:05:57,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:05:57,415 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:01,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:01,198 INFO L93 Difference]: Finished difference Result 3015 states and 5510 transitions. [2023-12-19 04:06:01,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:06:01,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-19 04:06:01,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:01,207 INFO L225 Difference]: With dead ends: 3015 [2023-12-19 04:06:01,207 INFO L226 Difference]: Without dead ends: 1982 [2023-12-19 04:06:01,210 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 [2023-12-19 04:06:01,211 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 1009 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:01,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 317 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-19 04:06:01,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2023-12-19 04:06:01,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1929. [2023-12-19 04:06:01,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 1.7977178423236515) internal successors, (3466), 1928 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:01,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 3466 transitions. [2023-12-19 04:06:01,289 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 3466 transitions. Word has length 45 [2023-12-19 04:06:01,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:01,289 INFO L495 AbstractCegarLoop]: Abstraction has 1929 states and 3466 transitions. [2023-12-19 04:06:01,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:01,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 3466 transitions. [2023-12-19 04:06:01,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-19 04:06:01,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:01,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:06:01,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 04:06:01,292 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:01,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:01,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1617916151, now seen corresponding path program 1 times [2023-12-19 04:06:01,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:01,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085406233] [2023-12-19 04:06:01,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:01,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:01,529 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:06:01,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:01,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085406233] [2023-12-19 04:06:01,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085406233] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:01,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:06:01,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:06:01,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106894574] [2023-12-19 04:06:01,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:01,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:06:01,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:01,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:06:01,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:06:01,531 INFO L87 Difference]: Start difference. First operand 1929 states and 3466 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:04,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:04,680 INFO L93 Difference]: Finished difference Result 5455 states and 9916 transitions. [2023-12-19 04:06:04,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:06:04,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2023-12-19 04:06:04,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:04,694 INFO L225 Difference]: With dead ends: 5455 [2023-12-19 04:06:04,694 INFO L226 Difference]: Without dead ends: 3527 [2023-12-19 04:06:04,697 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 [2023-12-19 04:06:04,698 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:04,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1005 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 04:06:04,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2023-12-19 04:06:04,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3525. [2023-12-19 04:06:04,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 3524 states have (on average 1.5672531214528944) internal successors, (5523), 3524 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:04,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5523 transitions. [2023-12-19 04:06:04,756 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5523 transitions. Word has length 110 [2023-12-19 04:06:04,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:04,757 INFO L495 AbstractCegarLoop]: Abstraction has 3525 states and 5523 transitions. [2023-12-19 04:06:04,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:04,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5523 transitions. [2023-12-19 04:06:04,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-19 04:06:04,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:04,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:06:04,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 04:06:04,760 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:04,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:04,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2110228838, now seen corresponding path program 1 times [2023-12-19 04:06:04,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:04,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907527529] [2023-12-19 04:06:04,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:04,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:04,917 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:06:04,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:04,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907527529] [2023-12-19 04:06:04,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907527529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:04,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:06:04,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:06:04,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326552449] [2023-12-19 04:06:04,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:04,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:06:04,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:04,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:06:04,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:06:04,919 INFO L87 Difference]: Start difference. First operand 3525 states and 5523 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:07,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:07,885 INFO L93 Difference]: Finished difference Result 10233 states and 16097 transitions. [2023-12-19 04:06:07,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:06:07,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2023-12-19 04:06:07,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:07,906 INFO L225 Difference]: With dead ends: 10233 [2023-12-19 04:06:07,906 INFO L226 Difference]: Without dead ends: 6709 [2023-12-19 04:06:07,915 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 [2023-12-19 04:06:07,922 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 973 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:07,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 850 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 04:06:07,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6709 states. [2023-12-19 04:06:07,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6709 to 6699. [2023-12-19 04:06:08,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6699 states, 6698 states have (on average 1.4131083905643476) internal successors, (9465), 6698 states have internal predecessors, (9465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 9465 transitions. [2023-12-19 04:06:08,011 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 9465 transitions. Word has length 116 [2023-12-19 04:06:08,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:08,011 INFO L495 AbstractCegarLoop]: Abstraction has 6699 states and 9465 transitions. [2023-12-19 04:06:08,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:08,011 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 9465 transitions. [2023-12-19 04:06:08,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-19 04:06:08,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:08,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:06:08,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 04:06:08,016 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:08,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:08,017 INFO L85 PathProgramCache]: Analyzing trace with hash -642343825, now seen corresponding path program 1 times [2023-12-19 04:06:08,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:08,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460883078] [2023-12-19 04:06:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:08,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:08,195 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:06:08,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:08,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460883078] [2023-12-19 04:06:08,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460883078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:08,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:06:08,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:06:08,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258606626] [2023-12-19 04:06:08,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:08,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:06:08,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:08,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:06:08,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:06:08,198 INFO L87 Difference]: Start difference. First operand 6699 states and 9465 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:11,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:11,473 INFO L93 Difference]: Finished difference Result 17442 states and 24478 transitions. [2023-12-19 04:06:11,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:06:11,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2023-12-19 04:06:11,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:11,504 INFO L225 Difference]: With dead ends: 17442 [2023-12-19 04:06:11,504 INFO L226 Difference]: Without dead ends: 10744 [2023-12-19 04:06:11,512 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 [2023-12-19 04:06:11,515 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 3742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:11,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 963 Invalid, 3742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3292 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 04:06:11,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2023-12-19 04:06:11,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 10668. [2023-12-19 04:06:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3563326146057935) internal successors, (14468), 10667 states have internal predecessors, (14468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:11,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14468 transitions. [2023-12-19 04:06:11,683 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14468 transitions. Word has length 146 [2023-12-19 04:06:11,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:11,685 INFO L495 AbstractCegarLoop]: Abstraction has 10668 states and 14468 transitions. [2023-12-19 04:06:11,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:11,685 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14468 transitions. [2023-12-19 04:06:11,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-19 04:06:11,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:11,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:06:11,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 04:06:11,687 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:11,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:11,687 INFO L85 PathProgramCache]: Analyzing trace with hash 2002303798, now seen corresponding path program 1 times [2023-12-19 04:06:11,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:11,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202736686] [2023-12-19 04:06:11,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:11,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:11,962 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:06:11,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:11,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202736686] [2023-12-19 04:06:11,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202736686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:11,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:06:11,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:06:11,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71497510] [2023-12-19 04:06:11,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:11,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:06:11,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:11,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:06:11,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:06:11,965 INFO L87 Difference]: Start difference. First operand 10668 states and 14468 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:14,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:14,844 INFO L93 Difference]: Finished difference Result 20548 states and 28118 transitions. [2023-12-19 04:06:14,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:06:14,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2023-12-19 04:06:14,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:14,904 INFO L225 Difference]: With dead ends: 20548 [2023-12-19 04:06:14,904 INFO L226 Difference]: Without dead ends: 10668 [2023-12-19 04:06:14,929 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 [2023-12-19 04:06:14,931 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:14,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1210 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 04:06:14,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10668 states. [2023-12-19 04:06:15,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10668 to 10668. [2023-12-19 04:06:15,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3539889378456924) internal successors, (14443), 10667 states have internal predecessors, (14443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:15,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14443 transitions. [2023-12-19 04:06:15,166 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14443 transitions. Word has length 156 [2023-12-19 04:06:15,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:15,168 INFO L495 AbstractCegarLoop]: Abstraction has 10668 states and 14443 transitions. [2023-12-19 04:06:15,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:15,169 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14443 transitions. [2023-12-19 04:06:15,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-19 04:06:15,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:15,170 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:06:15,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 04:06:15,170 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:15,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:15,171 INFO L85 PathProgramCache]: Analyzing trace with hash -807328180, now seen corresponding path program 1 times [2023-12-19 04:06:15,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:15,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063601363] [2023-12-19 04:06:15,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:15,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:15,275 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:06:15,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:15,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063601363] [2023-12-19 04:06:15,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063601363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:15,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:06:15,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:06:15,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557588728] [2023-12-19 04:06:15,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:15,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:06:15,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:15,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:06:15,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:06:15,278 INFO L87 Difference]: Start difference. First operand 10668 states and 14443 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:18,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:18,801 INFO L93 Difference]: Finished difference Result 29990 states and 41154 transitions. [2023-12-19 04:06:18,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:06:18,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2023-12-19 04:06:18,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:18,838 INFO L225 Difference]: With dead ends: 29990 [2023-12-19 04:06:18,838 INFO L226 Difference]: Without dead ends: 20110 [2023-12-19 04:06:18,854 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 [2023-12-19 04:06:18,855 INFO L413 NwaCegarLoop]: 1847 mSDtfsCounter, 891 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:18,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 1985 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 04:06:18,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20110 states. [2023-12-19 04:06:19,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20110 to 19313. [2023-12-19 04:06:19,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19313 states, 19312 states have (on average 1.2808616404308202) internal successors, (24736), 19312 states have internal predecessors, (24736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:19,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19313 states to 19313 states and 24736 transitions. [2023-12-19 04:06:19,250 INFO L78 Accepts]: Start accepts. Automaton has 19313 states and 24736 transitions. Word has length 170 [2023-12-19 04:06:19,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:19,250 INFO L495 AbstractCegarLoop]: Abstraction has 19313 states and 24736 transitions. [2023-12-19 04:06:19,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:19,251 INFO L276 IsEmpty]: Start isEmpty. Operand 19313 states and 24736 transitions. [2023-12-19 04:06:19,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-12-19 04:06:19,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:19,253 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:06:19,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 04:06:19,254 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:19,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:19,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2047428504, now seen corresponding path program 1 times [2023-12-19 04:06:19,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:19,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099574377] [2023-12-19 04:06:19,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:19,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-19 04:06:19,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:19,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099574377] [2023-12-19 04:06:19,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099574377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:19,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:06:19,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:06:19,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615085170] [2023-12-19 04:06:19,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:19,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:06:19,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:19,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:06:19,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:06:19,521 INFO L87 Difference]: Start difference. First operand 19313 states and 24736 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:22,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:22,713 INFO L93 Difference]: Finished difference Result 44943 states and 56955 transitions. [2023-12-19 04:06:22,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:06:22,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 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 257 [2023-12-19 04:06:22,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:22,757 INFO L225 Difference]: With dead ends: 44943 [2023-12-19 04:06:22,757 INFO L226 Difference]: Without dead ends: 25631 [2023-12-19 04:06:22,778 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 [2023-12-19 04:06:22,779 INFO L413 NwaCegarLoop]: 1011 mSDtfsCounter, 728 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 2702 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:22,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1190 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2702 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 04:06:22,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25631 states. [2023-12-19 04:06:23,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25631 to 25621. [2023-12-19 04:06:23,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25621 states, 25620 states have (on average 1.2326307572209212) internal successors, (31580), 25620 states have internal predecessors, (31580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:23,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25621 states to 25621 states and 31580 transitions. [2023-12-19 04:06:23,068 INFO L78 Accepts]: Start accepts. Automaton has 25621 states and 31580 transitions. Word has length 257 [2023-12-19 04:06:23,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:23,069 INFO L495 AbstractCegarLoop]: Abstraction has 25621 states and 31580 transitions. [2023-12-19 04:06:23,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:23,069 INFO L276 IsEmpty]: Start isEmpty. Operand 25621 states and 31580 transitions. [2023-12-19 04:06:23,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-19 04:06:23,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:23,075 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:06:23,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 04:06:23,075 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:23,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:23,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1992336918, now seen corresponding path program 1 times [2023-12-19 04:06:23,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:23,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400589612] [2023-12-19 04:06:23,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:23,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:06:23,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:23,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400589612] [2023-12-19 04:06:23,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400589612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:23,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:06:23,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:06:23,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738012691] [2023-12-19 04:06:23,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:23,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:06:23,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:23,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:06:23,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:06:23,234 INFO L87 Difference]: Start difference. First operand 25621 states and 31580 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:26,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:26,637 INFO L93 Difference]: Finished difference Result 72508 states and 89969 transitions. [2023-12-19 04:06:26,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:06:26,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 272 [2023-12-19 04:06:26,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:26,693 INFO L225 Difference]: With dead ends: 72508 [2023-12-19 04:06:26,694 INFO L226 Difference]: Without dead ends: 47675 [2023-12-19 04:06:26,719 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 [2023-12-19 04:06:26,721 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 826 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:26,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 896 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [916 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 04:06:26,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47675 states. [2023-12-19 04:06:27,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47675 to 46090. [2023-12-19 04:06:27,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46090 states, 46089 states have (on average 1.185141790882857) internal successors, (54622), 46089 states have internal predecessors, (54622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:27,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46090 states to 46090 states and 54622 transitions. [2023-12-19 04:06:27,265 INFO L78 Accepts]: Start accepts. Automaton has 46090 states and 54622 transitions. Word has length 272 [2023-12-19 04:06:27,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:27,266 INFO L495 AbstractCegarLoop]: Abstraction has 46090 states and 54622 transitions. [2023-12-19 04:06:27,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:27,266 INFO L276 IsEmpty]: Start isEmpty. Operand 46090 states and 54622 transitions. [2023-12-19 04:06:27,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-12-19 04:06:27,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:27,269 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:06:27,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 04:06:27,269 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:27,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:27,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1596347728, now seen corresponding path program 1 times [2023-12-19 04:06:27,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:27,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161344165] [2023-12-19 04:06:27,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:27,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:28,207 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 87 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:06:28,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:28,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161344165] [2023-12-19 04:06:28,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161344165] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:06:28,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159156045] [2023-12-19 04:06:28,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:28,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:06:28,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:06:28,226 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) [2023-12-19 04:06:28,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 04:06:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:28,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:06:28,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:06:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-19 04:06:28,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:06:28,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159156045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:28,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:06:28,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 04:06:28,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073412953] [2023-12-19 04:06:28,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:28,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:06:28,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:28,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:06:28,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:06:28,497 INFO L87 Difference]: Start difference. First operand 46090 states and 54622 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:32,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:32,315 INFO L93 Difference]: Finished difference Result 91390 states and 108450 transitions. [2023-12-19 04:06:32,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:06:32,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 286 [2023-12-19 04:06:32,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:32,390 INFO L225 Difference]: With dead ends: 91390 [2023-12-19 04:06:32,390 INFO L226 Difference]: Without dead ends: 46088 [2023-12-19 04:06:32,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:06:32,414 INFO L413 NwaCegarLoop]: 1357 mSDtfsCounter, 1160 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:32,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1160 Valid, 1438 Invalid, 2915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 04:06:32,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46088 states. [2023-12-19 04:06:32,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46088 to 46087. [2023-12-19 04:06:32,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46087 states, 46086 states have (on average 1.1506965238901186) internal successors, (53031), 46086 states have internal predecessors, (53031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:33,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46087 states to 46087 states and 53031 transitions. [2023-12-19 04:06:33,069 INFO L78 Accepts]: Start accepts. Automaton has 46087 states and 53031 transitions. Word has length 286 [2023-12-19 04:06:33,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:33,069 INFO L495 AbstractCegarLoop]: Abstraction has 46087 states and 53031 transitions. [2023-12-19 04:06:33,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:33,069 INFO L276 IsEmpty]: Start isEmpty. Operand 46087 states and 53031 transitions. [2023-12-19 04:06:33,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-19 04:06:33,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:33,075 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:06:33,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 04:06:33,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 04:06:33,283 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:33,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:33,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1940985484, now seen corresponding path program 1 times [2023-12-19 04:06:33,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:33,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725659045] [2023-12-19 04:06:33,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:33,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 216 proven. 113 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-19 04:06:34,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:34,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725659045] [2023-12-19 04:06:34,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725659045] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:06:34,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128162351] [2023-12-19 04:06:34,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:34,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:06:34,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:06:34,275 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) [2023-12-19 04:06:34,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 04:06:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:34,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:06:34,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:06:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-19 04:06:34,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:06:34,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128162351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:34,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:06:34,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 04:06:34,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666234465] [2023-12-19 04:06:34,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:34,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:06:34,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:34,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:06:34,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:06:34,484 INFO L87 Difference]: Start difference. First operand 46087 states and 53031 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:37,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:37,279 INFO L93 Difference]: Finished difference Result 91375 states and 105259 transitions. [2023-12-19 04:06:37,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:06:37,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 351 [2023-12-19 04:06:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:37,504 INFO L225 Difference]: With dead ends: 91375 [2023-12-19 04:06:37,505 INFO L226 Difference]: Without dead ends: 46076 [2023-12-19 04:06:37,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:06:37,536 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1074 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:37,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 815 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 04:06:37,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46076 states. [2023-12-19 04:06:38,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46076 to 46073. [2023-12-19 04:06:38,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46073 states, 46072 states have (on average 1.1090467094981769) internal successors, (51096), 46072 states have internal predecessors, (51096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:38,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46073 states to 46073 states and 51096 transitions. [2023-12-19 04:06:38,157 INFO L78 Accepts]: Start accepts. Automaton has 46073 states and 51096 transitions. Word has length 351 [2023-12-19 04:06:38,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:38,157 INFO L495 AbstractCegarLoop]: Abstraction has 46073 states and 51096 transitions. [2023-12-19 04:06:38,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:38,157 INFO L276 IsEmpty]: Start isEmpty. Operand 46073 states and 51096 transitions. [2023-12-19 04:06:38,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2023-12-19 04:06:38,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:38,164 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2023-12-19 04:06:38,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 04:06:38,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 04:06:38,370 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:38,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:38,370 INFO L85 PathProgramCache]: Analyzing trace with hash 912369226, now seen corresponding path program 1 times [2023-12-19 04:06:38,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:38,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855098949] [2023-12-19 04:06:38,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:38,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 478 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-12-19 04:06:38,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:38,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855098949] [2023-12-19 04:06:38,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855098949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:38,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:06:38,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:06:38,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241151783] [2023-12-19 04:06:38,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:38,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:06:38,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:38,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:06:38,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:06:38,772 INFO L87 Difference]: Start difference. First operand 46073 states and 51096 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) [2023-12-19 04:06:45,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:45,617 INFO L93 Difference]: Finished difference Result 122258 states and 136282 transitions. [2023-12-19 04:06:45,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:06:45,618 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 393 [2023-12-19 04:06:45,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:45,739 INFO L225 Difference]: With dead ends: 122258 [2023-12-19 04:06:45,740 INFO L226 Difference]: Without dead ends: 76973 [2023-12-19 04:06:45,779 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 [2023-12-19 04:06:45,780 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 1700 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 6752 mSolverCounterSat, 1002 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 7754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1002 IncrementalHoareTripleChecker+Valid, 6752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:45,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 889 Invalid, 7754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1002 Valid, 6752 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-19 04:06:45,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76973 states. [2023-12-19 04:06:46,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76973 to 57893. [2023-12-19 04:06:46,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57893 states, 57892 states have (on average 1.1003592897118772) internal successors, (63702), 57892 states have internal predecessors, (63702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:46,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57893 states to 57893 states and 63702 transitions. [2023-12-19 04:06:46,558 INFO L78 Accepts]: Start accepts. Automaton has 57893 states and 63702 transitions. Word has length 393 [2023-12-19 04:06:46,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:46,572 INFO L495 AbstractCegarLoop]: Abstraction has 57893 states and 63702 transitions. [2023-12-19 04:06:46,573 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) [2023-12-19 04:06:46,573 INFO L276 IsEmpty]: Start isEmpty. Operand 57893 states and 63702 transitions. [2023-12-19 04:06:46,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-12-19 04:06:46,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:46,584 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:06:46,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 04:06:46,584 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:46,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:46,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1852156812, now seen corresponding path program 1 times [2023-12-19 04:06:46,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:46,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066278279] [2023-12-19 04:06:46,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:46,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:46,897 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-19 04:06:46,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:46,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066278279] [2023-12-19 04:06:46,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066278279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:46,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:06:46,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:06:46,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541942512] [2023-12-19 04:06:46,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:46,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:06:46,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:46,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:06:46,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:06:46,899 INFO L87 Difference]: Start difference. First operand 57893 states and 63702 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:50,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:50,432 INFO L93 Difference]: Finished difference Result 139406 states and 154439 transitions. [2023-12-19 04:06:50,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:06:50,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 406 [2023-12-19 04:06:50,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:50,559 INFO L225 Difference]: With dead ends: 139406 [2023-12-19 04:06:50,560 INFO L226 Difference]: Without dead ends: 82301 [2023-12-19 04:06:50,681 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 [2023-12-19 04:06:50,682 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 830 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2407 mSolverCounterSat, 963 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 3370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 963 IncrementalHoareTripleChecker+Valid, 2407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:50,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 831 Invalid, 3370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [963 Valid, 2407 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 04:06:50,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82301 states. [2023-12-19 04:06:51,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82301 to 80709. [2023-12-19 04:06:51,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80709 states, 80708 states have (on average 1.1005972146503444) internal successors, (88827), 80708 states have internal predecessors, (88827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:51,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80709 states to 80709 states and 88827 transitions. [2023-12-19 04:06:51,775 INFO L78 Accepts]: Start accepts. Automaton has 80709 states and 88827 transitions. Word has length 406 [2023-12-19 04:06:51,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:51,778 INFO L495 AbstractCegarLoop]: Abstraction has 80709 states and 88827 transitions. [2023-12-19 04:06:51,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:51,778 INFO L276 IsEmpty]: Start isEmpty. Operand 80709 states and 88827 transitions. [2023-12-19 04:06:51,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-19 04:06:51,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:51,801 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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:06:51,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 04:06:51,802 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:51,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:51,803 INFO L85 PathProgramCache]: Analyzing trace with hash 735073468, now seen corresponding path program 1 times [2023-12-19 04:06:51,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:51,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391058106] [2023-12-19 04:06:51,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:51,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:52,217 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 369 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 04:06:52,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:52,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391058106] [2023-12-19 04:06:52,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391058106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:52,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:06:52,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:06:52,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497861197] [2023-12-19 04:06:52,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:52,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:06:52,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:52,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:06:52,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:06:52,222 INFO L87 Difference]: Start difference. First operand 80709 states and 88827 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:55,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:55,820 INFO L93 Difference]: Finished difference Result 182695 states and 200597 transitions. [2023-12-19 04:06:55,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:06:55,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 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 426 [2023-12-19 04:06:55,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:56,019 INFO L225 Difference]: With dead ends: 182695 [2023-12-19 04:06:56,019 INFO L226 Difference]: Without dead ends: 102774 [2023-12-19 04:06:56,095 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 [2023-12-19 04:06:56,099 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 803 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:56,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1112 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 04:06:56,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102774 states. [2023-12-19 04:06:57,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102774 to 98814. [2023-12-19 04:06:57,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98814 states, 98813 states have (on average 1.0907269286429924) internal successors, (107778), 98813 states have internal predecessors, (107778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:57,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98814 states to 98814 states and 107778 transitions. [2023-12-19 04:06:57,626 INFO L78 Accepts]: Start accepts. Automaton has 98814 states and 107778 transitions. Word has length 426 [2023-12-19 04:06:57,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:57,640 INFO L495 AbstractCegarLoop]: Abstraction has 98814 states and 107778 transitions. [2023-12-19 04:06:57,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:06:57,640 INFO L276 IsEmpty]: Start isEmpty. Operand 98814 states and 107778 transitions. [2023-12-19 04:06:57,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-12-19 04:06:57,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:57,663 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:06:57,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 04:06:57,663 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:57,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:57,663 INFO L85 PathProgramCache]: Analyzing trace with hash 2092992386, now seen corresponding path program 1 times [2023-12-19 04:06:57,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:57,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570415310] [2023-12-19 04:06:57,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:57,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:59,081 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 385 proven. 113 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-12-19 04:06:59,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:59,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570415310] [2023-12-19 04:06:59,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570415310] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:06:59,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511313196] [2023-12-19 04:06:59,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:59,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:06:59,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:06:59,097 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) [2023-12-19 04:06:59,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 04:06:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:59,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:06:59,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:06:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2023-12-19 04:06:59,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:06:59,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511313196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:59,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:06:59,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 04:06:59,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909208709] [2023-12-19 04:06:59,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:59,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:06:59,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:59,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:06:59,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:06:59,320 INFO L87 Difference]: Start difference. First operand 98814 states and 107778 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:02,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:07:02,460 INFO L93 Difference]: Finished difference Result 198418 states and 216355 transitions. [2023-12-19 04:07:02,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:07:02,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 436 [2023-12-19 04:07:02,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:07:02,641 INFO L225 Difference]: With dead ends: 198418 [2023-12-19 04:07:02,641 INFO L226 Difference]: Without dead ends: 100392 [2023-12-19 04:07:02,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:07:02,697 INFO L413 NwaCegarLoop]: 1383 mSDtfsCounter, 993 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 3094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:07:02,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1468 Invalid, 3094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 04:07:02,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100392 states. [2023-12-19 04:07:03,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100392 to 98806. [2023-12-19 04:07:03,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98806 states, 98805 states have (on average 1.0671119882597035) internal successors, (105436), 98805 states have internal predecessors, (105436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98806 states to 98806 states and 105436 transitions. [2023-12-19 04:07:04,181 INFO L78 Accepts]: Start accepts. Automaton has 98806 states and 105436 transitions. Word has length 436 [2023-12-19 04:07:04,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:07:04,181 INFO L495 AbstractCegarLoop]: Abstraction has 98806 states and 105436 transitions. [2023-12-19 04:07:04,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:04,182 INFO L276 IsEmpty]: Start isEmpty. Operand 98806 states and 105436 transitions. [2023-12-19 04:07:04,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2023-12-19 04:07:04,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:07:04,191 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:07:04,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 04:07:04,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:07:04,398 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:07:04,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:07:04,399 INFO L85 PathProgramCache]: Analyzing trace with hash 816331524, now seen corresponding path program 1 times [2023-12-19 04:07:04,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:07:04,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314913715] [2023-12-19 04:07:04,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:07:04,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:07:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:07:04,872 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-19 04:07:04,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:07:04,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314913715] [2023-12-19 04:07:04,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314913715] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:07:04,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:07:04,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:07:04,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048863676] [2023-12-19 04:07:04,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:07:04,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:07:04,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:07:04,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:07:04,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:07:04,875 INFO L87 Difference]: Start difference. First operand 98806 states and 105436 transitions. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:09,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:07:09,122 INFO L93 Difference]: Finished difference Result 241039 states and 257883 transitions. [2023-12-19 04:07:09,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:07:09,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 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 476 [2023-12-19 04:07:09,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:07:09,342 INFO L225 Difference]: With dead ends: 241039 [2023-12-19 04:07:09,342 INFO L226 Difference]: Without dead ends: 143021 [2023-12-19 04:07:09,391 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 [2023-12-19 04:07:09,392 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 844 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 2971 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 3581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 2971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:07:09,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 750 Invalid, 3581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 2971 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 04:07:09,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143021 states. [2023-12-19 04:07:10,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143021 to 118492. [2023-12-19 04:07:11,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118492 states, 118491 states have (on average 1.0664691833135007) internal successors, (126367), 118491 states have internal predecessors, (126367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118492 states to 118492 states and 126367 transitions. [2023-12-19 04:07:11,212 INFO L78 Accepts]: Start accepts. Automaton has 118492 states and 126367 transitions. Word has length 476 [2023-12-19 04:07:11,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:07:11,212 INFO L495 AbstractCegarLoop]: Abstraction has 118492 states and 126367 transitions. [2023-12-19 04:07:11,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:11,213 INFO L276 IsEmpty]: Start isEmpty. Operand 118492 states and 126367 transitions. [2023-12-19 04:07:11,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2023-12-19 04:07:11,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:07:11,225 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:07:11,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 04:07:11,225 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:07:11,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:07:11,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1494883181, now seen corresponding path program 1 times [2023-12-19 04:07:11,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:07:11,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21808623] [2023-12-19 04:07:11,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:07:11,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:07:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:07:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 540 proven. 113 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-12-19 04:07:12,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:07:12,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21808623] [2023-12-19 04:07:12,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21808623] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:07:12,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321194811] [2023-12-19 04:07:12,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:07:12,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:07:12,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:07:12,405 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) [2023-12-19 04:07:12,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 04:07:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:07:12,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:07:12,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:07:12,789 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 628 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-12-19 04:07:12,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:07:12,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321194811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:07:12,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:07:12,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 04:07:12,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345716] [2023-12-19 04:07:12,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:07:12,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:07:12,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:07:12,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:07:12,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:07:12,791 INFO L87 Difference]: Start difference. First operand 118492 states and 126367 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:16,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:07:16,240 INFO L93 Difference]: Finished difference Result 230660 states and 246977 transitions. [2023-12-19 04:07:16,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:07:16,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 517 [2023-12-19 04:07:16,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:07:16,455 INFO L225 Difference]: With dead ends: 230660 [2023-12-19 04:07:16,455 INFO L226 Difference]: Without dead ends: 128702 [2023-12-19 04:07:16,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:07:16,516 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 1200 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 3069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:07:16,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 388 Invalid, 3069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 04:07:16,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128702 states. [2023-12-19 04:07:18,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128702 to 128702. [2023-12-19 04:07:18,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128702 states, 128701 states have (on average 1.0603336415412468) internal successors, (136466), 128701 states have internal predecessors, (136466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:18,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128702 states to 128702 states and 136466 transitions. [2023-12-19 04:07:18,301 INFO L78 Accepts]: Start accepts. Automaton has 128702 states and 136466 transitions. Word has length 517 [2023-12-19 04:07:18,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:07:18,301 INFO L495 AbstractCegarLoop]: Abstraction has 128702 states and 136466 transitions. [2023-12-19 04:07:18,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:18,301 INFO L276 IsEmpty]: Start isEmpty. Operand 128702 states and 136466 transitions. [2023-12-19 04:07:18,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-12-19 04:07:18,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:07:18,316 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-12-19 04:07:18,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 04:07:18,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 04:07:18,522 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:07:18,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:07:18,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2122874086, now seen corresponding path program 1 times [2023-12-19 04:07:18,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:07:18,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42683674] [2023-12-19 04:07:18,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:07:18,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:07:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:07:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 328 proven. 110 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-19 04:07:19,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:07:19,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42683674] [2023-12-19 04:07:19,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42683674] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:07:19,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703553048] [2023-12-19 04:07:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:07:19,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:07:19,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:07:19,769 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) [2023-12-19 04:07:19,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 04:07:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:07:19,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:07:19,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:07:20,022 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2023-12-19 04:07:20,022 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:07:20,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703553048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:07:20,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:07:20,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-19 04:07:20,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423852914] [2023-12-19 04:07:20,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:07:20,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:07:20,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:07:20,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:07:20,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 04:07:20,024 INFO L87 Difference]: Start difference. First operand 128702 states and 136466 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:24,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:07:24,287 INFO L93 Difference]: Finished difference Result 280219 states and 298585 transitions. [2023-12-19 04:07:24,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:07:24,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 541 [2023-12-19 04:07:24,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:07:24,562 INFO L225 Difference]: With dead ends: 280219 [2023-12-19 04:07:24,562 INFO L226 Difference]: Without dead ends: 168051 [2023-12-19 04:07:24,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 04:07:24,636 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 846 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2797 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 3282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:07:24,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 1689 Invalid, 3282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2797 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 04:07:24,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168051 states. [2023-12-19 04:07:26,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168051 to 168051. [2023-12-19 04:07:26,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168051 states, 168050 states have (on average 1.0585123475156204) internal successors, (177883), 168050 states have internal predecessors, (177883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:26,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168051 states to 168051 states and 177883 transitions. [2023-12-19 04:07:26,851 INFO L78 Accepts]: Start accepts. Automaton has 168051 states and 177883 transitions. Word has length 541 [2023-12-19 04:07:26,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:07:26,851 INFO L495 AbstractCegarLoop]: Abstraction has 168051 states and 177883 transitions. [2023-12-19 04:07:26,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:26,851 INFO L276 IsEmpty]: Start isEmpty. Operand 168051 states and 177883 transitions. [2023-12-19 04:07:26,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2023-12-19 04:07:26,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:07:26,864 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:07:27,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 04:07:27,552 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 [2023-12-19 04:07:27,553 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:07:27,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:07:27,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1241591679, now seen corresponding path program 1 times [2023-12-19 04:07:27,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:07:27,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423001954] [2023-12-19 04:07:27,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:07:27,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:07:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:07:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-19 04:07:27,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:07:27,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423001954] [2023-12-19 04:07:27,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423001954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:07:27,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:07:27,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:07:27,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445994801] [2023-12-19 04:07:27,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:07:27,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:07:27,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:07:27,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:07:27,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:07:27,816 INFO L87 Difference]: Start difference. First operand 168051 states and 177883 transitions. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:31,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:07:31,776 INFO L93 Difference]: Finished difference Result 366803 states and 389130 transitions. [2023-12-19 04:07:31,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:07:31,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 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 547 [2023-12-19 04:07:31,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:07:32,169 INFO L225 Difference]: With dead ends: 366803 [2023-12-19 04:07:32,169 INFO L226 Difference]: Without dead ends: 199540 [2023-12-19 04:07:32,606 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 [2023-12-19 04:07:32,607 INFO L413 NwaCegarLoop]: 1733 mSDtfsCounter, 747 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 2929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:07:32,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1867 Invalid, 2929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 04:07:32,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199540 states. [2023-12-19 04:07:35,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199540 to 197169. [2023-12-19 04:07:35,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197169 states, 197168 states have (on average 1.0545271037896615) internal successors, (207919), 197168 states have internal predecessors, (207919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:35,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197169 states to 197169 states and 207919 transitions. [2023-12-19 04:07:35,872 INFO L78 Accepts]: Start accepts. Automaton has 197169 states and 207919 transitions. Word has length 547 [2023-12-19 04:07:35,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:07:35,872 INFO L495 AbstractCegarLoop]: Abstraction has 197169 states and 207919 transitions. [2023-12-19 04:07:35,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:35,873 INFO L276 IsEmpty]: Start isEmpty. Operand 197169 states and 207919 transitions. [2023-12-19 04:07:35,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2023-12-19 04:07:35,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:07:35,903 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:07:35,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 04:07:35,903 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:07:35,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:07:35,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1029717481, now seen corresponding path program 1 times [2023-12-19 04:07:35,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:07:35,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198818972] [2023-12-19 04:07:35,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:07:35,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:07:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:07:37,171 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 548 proven. 113 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-12-19 04:07:37,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:07:37,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198818972] [2023-12-19 04:07:37,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198818972] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:07:37,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330571932] [2023-12-19 04:07:37,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:07:37,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:07:37,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:07:37,173 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) [2023-12-19 04:07:37,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 04:07:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:07:37,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:07:37,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:07:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 525 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-12-19 04:07:37,636 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:07:37,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330571932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:07:37,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:07:37,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 04:07:37,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677256685] [2023-12-19 04:07:37,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:07:37,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:07:37,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:07:37,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:07:37,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:07:37,638 INFO L87 Difference]: Start difference. First operand 197169 states and 207919 transitions. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:41,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:07:41,575 INFO L93 Difference]: Finished difference Result 393538 states and 415313 transitions. [2023-12-19 04:07:41,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:07:41,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 550 [2023-12-19 04:07:41,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:07:41,922 INFO L225 Difference]: With dead ends: 393538 [2023-12-19 04:07:41,923 INFO L226 Difference]: Without dead ends: 213690 [2023-12-19 04:07:42,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:07:42,029 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 755 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:07:42,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1806 Invalid, 2767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 04:07:42,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213690 states. [2023-12-19 04:07:44,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213690 to 200306. [2023-12-19 04:07:44,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200306 states, 200305 states have (on average 1.0511919323032375) internal successors, (210559), 200305 states have internal predecessors, (210559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:44,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200306 states to 200306 states and 210559 transitions. [2023-12-19 04:07:44,998 INFO L78 Accepts]: Start accepts. Automaton has 200306 states and 210559 transitions. Word has length 550 [2023-12-19 04:07:44,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:07:44,999 INFO L495 AbstractCegarLoop]: Abstraction has 200306 states and 210559 transitions. [2023-12-19 04:07:44,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:45,001 INFO L276 IsEmpty]: Start isEmpty. Operand 200306 states and 210559 transitions. [2023-12-19 04:07:45,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-12-19 04:07:45,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:07:45,017 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:07:45,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 04:07:45,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:07:45,223 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:07:45,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:07:45,224 INFO L85 PathProgramCache]: Analyzing trace with hash -126514740, now seen corresponding path program 1 times [2023-12-19 04:07:45,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:07:45,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020454080] [2023-12-19 04:07:45,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:07:45,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:07:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:07:45,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 631 proven. 0 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2023-12-19 04:07:45,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:07:45,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020454080] [2023-12-19 04:07:45,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020454080] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:07:45,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:07:45,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:07:45,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77911939] [2023-12-19 04:07:45,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:07:45,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:07:45,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:07:45,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:07:45,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:07:45,700 INFO L87 Difference]: Start difference. First operand 200306 states and 210559 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 2 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:48,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:07:48,585 INFO L93 Difference]: Finished difference Result 380914 states and 400883 transitions. [2023-12-19 04:07:48,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:07:48,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 2 states have internal predecessors, (255), 0 states have call successors, (0), 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 610 [2023-12-19 04:07:48,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:07:48,903 INFO L225 Difference]: With dead ends: 380914 [2023-12-19 04:07:48,904 INFO L226 Difference]: Without dead ends: 197929 [2023-12-19 04:07:48,941 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 [2023-12-19 04:07:48,942 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 1689 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:07:48,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 279 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 04:07:49,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197929 states. [2023-12-19 04:07:51,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197929 to 197928. [2023-12-19 04:07:51,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197928 states, 197927 states have (on average 1.0506954584265917) internal successors, (207961), 197927 states have internal predecessors, (207961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:51,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197928 states to 197928 states and 207961 transitions. [2023-12-19 04:07:51,501 INFO L78 Accepts]: Start accepts. Automaton has 197928 states and 207961 transitions. Word has length 610 [2023-12-19 04:07:51,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:07:51,501 INFO L495 AbstractCegarLoop]: Abstraction has 197928 states and 207961 transitions. [2023-12-19 04:07:51,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 2 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:51,501 INFO L276 IsEmpty]: Start isEmpty. Operand 197928 states and 207961 transitions. [2023-12-19 04:07:51,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-19 04:07:51,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:07:51,839 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-19 04:07:51,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 04:07:51,840 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:07:51,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:07:51,840 INFO L85 PathProgramCache]: Analyzing trace with hash -164770272, now seen corresponding path program 1 times [2023-12-19 04:07:51,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:07:51,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727251517] [2023-12-19 04:07:51,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:07:51,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:07:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:07:53,190 INFO L134 CoverageAnalysis]: Checked inductivity of 973 backedges. 637 proven. 110 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-19 04:07:53,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:07:53,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727251517] [2023-12-19 04:07:53,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727251517] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:07:53,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798777408] [2023-12-19 04:07:53,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:07:53,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:07:53,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:07:53,216 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) [2023-12-19 04:07:53,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 04:07:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:07:53,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:07:53,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:07:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 973 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2023-12-19 04:07:53,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:07:53,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798777408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:07:53,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:07:53,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-19 04:07:53,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374821504] [2023-12-19 04:07:53,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:07:53,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:07:53,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:07:53,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:07:53,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 04:07:53,472 INFO L87 Difference]: Start difference. First operand 197928 states and 207961 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:07:57,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:07:57,138 INFO L93 Difference]: Finished difference Result 397438 states and 417459 transitions. [2023-12-19 04:07:57,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:07:57,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 624 [2023-12-19 04:07:57,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:07:57,487 INFO L225 Difference]: With dead ends: 397438 [2023-12-19 04:07:57,488 INFO L226 Difference]: Without dead ends: 200298 [2023-12-19 04:07:57,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 04:07:57,592 INFO L413 NwaCegarLoop]: 1174 mSDtfsCounter, 1052 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 2428 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 3016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 2428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:07:57,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 1217 Invalid, 3016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 2428 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 04:07:57,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200298 states. [2023-12-19 04:07:59,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200298 to 193978. [2023-12-19 04:07:59,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193978 states, 193977 states have (on average 1.0478149471329075) internal successors, (203252), 193977 states have internal predecessors, (203252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:00,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193978 states to 193978 states and 203252 transitions. [2023-12-19 04:08:00,389 INFO L78 Accepts]: Start accepts. Automaton has 193978 states and 203252 transitions. Word has length 624 [2023-12-19 04:08:00,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:08:00,389 INFO L495 AbstractCegarLoop]: Abstraction has 193978 states and 203252 transitions. [2023-12-19 04:08:00,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:00,389 INFO L276 IsEmpty]: Start isEmpty. Operand 193978 states and 203252 transitions. [2023-12-19 04:08:00,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2023-12-19 04:08:00,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:08:00,421 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, 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, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:08:00,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 04:08:00,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:08:00,628 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:08:00,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:08:00,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1107426288, now seen corresponding path program 1 times [2023-12-19 04:08:00,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:08:00,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945074553] [2023-12-19 04:08:00,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:08:00,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:08:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:08:01,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2095 backedges. 1492 proven. 75 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2023-12-19 04:08:01,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:08:01,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945074553] [2023-12-19 04:08:01,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945074553] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:08:01,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638075990] [2023-12-19 04:08:01,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:08:01,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:08:01,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:08:01,627 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) [2023-12-19 04:08:01,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 04:08:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:08:01,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 04:08:01,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:08:02,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2095 backedges. 1630 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-12-19 04:08:02,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:08:02,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638075990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:08:02,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:08:02,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-12-19 04:08:02,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354449107] [2023-12-19 04:08:02,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:08:02,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:08:02,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:08:02,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:08:02,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:08:02,304 INFO L87 Difference]: Start difference. First operand 193978 states and 203252 transitions. Second operand has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:06,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:08:06,976 INFO L93 Difference]: Finished difference Result 375363 states and 393742 transitions. [2023-12-19 04:08:06,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:08:06,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 716 [2023-12-19 04:08:06,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:08:07,415 INFO L225 Difference]: With dead ends: 375363 [2023-12-19 04:08:07,415 INFO L226 Difference]: Without dead ends: 197123 [2023-12-19 04:08:07,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:08:07,525 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 2498 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 3328 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2498 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 3790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 3328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:08:07,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2498 Valid, 760 Invalid, 3790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 3328 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 04:08:07,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197123 states. [2023-12-19 04:08:09,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197123 to 193970. [2023-12-19 04:08:10,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193970 states, 193969 states have (on average 1.0450690574267023) internal successors, (202711), 193969 states have internal predecessors, (202711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:10,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193970 states to 193970 states and 202711 transitions. [2023-12-19 04:08:10,760 INFO L78 Accepts]: Start accepts. Automaton has 193970 states and 202711 transitions. Word has length 716 [2023-12-19 04:08:10,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:08:10,761 INFO L495 AbstractCegarLoop]: Abstraction has 193970 states and 202711 transitions. [2023-12-19 04:08:10,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:10,761 INFO L276 IsEmpty]: Start isEmpty. Operand 193970 states and 202711 transitions. [2023-12-19 04:08:10,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-12-19 04:08:10,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:08:10,795 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2023-12-19 04:08:10,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 04:08:11,002 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,SelfDestructingSolverStorable22 [2023-12-19 04:08:11,004 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:08:11,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:08:11,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1643204449, now seen corresponding path program 1 times [2023-12-19 04:08:11,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:08:11,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729059735] [2023-12-19 04:08:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:08:11,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:08:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:08:12,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1753 backedges. 961 proven. 359 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2023-12-19 04:08:12,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:08:12,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729059735] [2023-12-19 04:08:12,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729059735] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:08:12,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241703736] [2023-12-19 04:08:12,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:08:12,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:08:12,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:08:12,849 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) [2023-12-19 04:08:12,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 04:08:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:08:13,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 04:08:13,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:08:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1753 backedges. 905 proven. 0 refuted. 0 times theorem prover too weak. 848 trivial. 0 not checked. [2023-12-19 04:08:13,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:08:13,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241703736] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:08:13,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:08:13,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-12-19 04:08:13,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262002971] [2023-12-19 04:08:13,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:08:13,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:08:13,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:08:13,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:08:13,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:08:13,669 INFO L87 Difference]: Start difference. First operand 193970 states and 202711 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 2 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:17,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:08:17,084 INFO L93 Difference]: Finished difference Result 376141 states and 393425 transitions. [2023-12-19 04:08:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:08:17,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 2 states have internal predecessors, (298), 0 states have call successors, (0), 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 749 [2023-12-19 04:08:17,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:08:17,388 INFO L225 Difference]: With dead ends: 376141 [2023-12-19 04:08:17,388 INFO L226 Difference]: Without dead ends: 196340 [2023-12-19 04:08:17,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:08:17,533 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 640 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 2489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:08:17,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 1070 Invalid, 2489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 04:08:18,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196340 states. [2023-12-19 04:08:19,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196340 to 192392. [2023-12-19 04:08:20,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192392 states, 192391 states have (on average 1.0415767889350334) internal successors, (200390), 192391 states have internal predecessors, (200390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192392 states to 192392 states and 200390 transitions. [2023-12-19 04:08:20,636 INFO L78 Accepts]: Start accepts. Automaton has 192392 states and 200390 transitions. Word has length 749 [2023-12-19 04:08:20,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:08:20,636 INFO L495 AbstractCegarLoop]: Abstraction has 192392 states and 200390 transitions. [2023-12-19 04:08:20,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 2 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:20,636 INFO L276 IsEmpty]: Start isEmpty. Operand 192392 states and 200390 transitions. [2023-12-19 04:08:20,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2023-12-19 04:08:20,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:08:20,673 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 04:08:20,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 04:08:20,880 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,SelfDestructingSolverStorable23 [2023-12-19 04:08:20,881 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:08:20,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:08:20,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1797723269, now seen corresponding path program 1 times [2023-12-19 04:08:20,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:08:20,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231310331] [2023-12-19 04:08:20,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:08:20,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:08:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:08:21,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2635 backedges. 1798 proven. 0 refuted. 0 times theorem prover too weak. 837 trivial. 0 not checked. [2023-12-19 04:08:21,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:08:21,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231310331] [2023-12-19 04:08:21,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231310331] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:08:21,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:08:21,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:08:21,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141856385] [2023-12-19 04:08:21,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:08:21,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:08:21,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:08:21,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:08:21,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:08:21,577 INFO L87 Difference]: Start difference. First operand 192392 states and 200390 transitions. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:25,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:08:25,069 INFO L93 Difference]: Finished difference Result 369064 states and 384806 transitions. [2023-12-19 04:08:25,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:08:25,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 787 [2023-12-19 04:08:25,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:08:25,367 INFO L225 Difference]: With dead ends: 369064 [2023-12-19 04:08:25,368 INFO L226 Difference]: Without dead ends: 191629 [2023-12-19 04:08:25,456 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 [2023-12-19 04:08:25,457 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 745 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:08:25,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 1693 Invalid, 2533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 2370 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 04:08:25,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191629 states. [2023-12-19 04:08:27,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191629 to 189240. [2023-12-19 04:08:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189240 states, 189239 states have (on average 1.0401872764070832) internal successors, (196844), 189239 states have internal predecessors, (196844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:27,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189240 states to 189240 states and 196844 transitions. [2023-12-19 04:08:27,960 INFO L78 Accepts]: Start accepts. Automaton has 189240 states and 196844 transitions. Word has length 787 [2023-12-19 04:08:27,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:08:27,961 INFO L495 AbstractCegarLoop]: Abstraction has 189240 states and 196844 transitions. [2023-12-19 04:08:27,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:27,961 INFO L276 IsEmpty]: Start isEmpty. Operand 189240 states and 196844 transitions. [2023-12-19 04:08:27,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2023-12-19 04:08:27,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:08:27,994 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 04:08:27,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 04:08:27,995 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:08:27,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:08:27,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1119301996, now seen corresponding path program 1 times [2023-12-19 04:08:27,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:08:27,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548830258] [2023-12-19 04:08:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:08:27,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:08:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:08:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2023 backedges. 1250 proven. 0 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2023-12-19 04:08:29,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:08:29,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548830258] [2023-12-19 04:08:29,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548830258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:08:29,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:08:29,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:08:29,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606847968] [2023-12-19 04:08:29,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:08:29,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:08:29,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:08:29,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:08:29,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:08:29,148 INFO L87 Difference]: Start difference. First operand 189240 states and 196844 transitions. Second operand has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:36,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:08:36,024 INFO L93 Difference]: Finished difference Result 473884 states and 493591 transitions. [2023-12-19 04:08:36,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:08:36,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 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 810 [2023-12-19 04:08:36,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:08:36,507 INFO L225 Difference]: With dead ends: 473884 [2023-12-19 04:08:36,508 INFO L226 Difference]: Without dead ends: 287793 [2023-12-19 04:08:36,613 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 [2023-12-19 04:08:36,614 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 1704 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 5193 mSolverCounterSat, 1183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 6376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1183 IncrementalHoareTripleChecker+Valid, 5193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:08:36,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1704 Valid, 448 Invalid, 6376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1183 Valid, 5193 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-19 04:08:36,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287793 states. [2023-12-19 04:08:39,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287793 to 265624. [2023-12-19 04:08:39,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265624 states, 265623 states have (on average 1.0408360721774845) internal successors, (276470), 265623 states have internal predecessors, (276470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:40,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265624 states to 265624 states and 276470 transitions. [2023-12-19 04:08:40,523 INFO L78 Accepts]: Start accepts. Automaton has 265624 states and 276470 transitions. Word has length 810 [2023-12-19 04:08:40,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:08:40,524 INFO L495 AbstractCegarLoop]: Abstraction has 265624 states and 276470 transitions. [2023-12-19 04:08:40,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:40,524 INFO L276 IsEmpty]: Start isEmpty. Operand 265624 states and 276470 transitions. [2023-12-19 04:08:40,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2023-12-19 04:08:40,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:08:40,560 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, 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, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 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] [2023-12-19 04:08:40,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 04:08:40,560 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:08:40,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:08:40,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1370023218, now seen corresponding path program 1 times [2023-12-19 04:08:40,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:08:40,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100280948] [2023-12-19 04:08:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:08:40,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:08:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:08:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3163 backedges. 2084 proven. 0 refuted. 0 times theorem prover too weak. 1079 trivial. 0 not checked. [2023-12-19 04:08:41,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:08:41,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100280948] [2023-12-19 04:08:41,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100280948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:08:41,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:08:41,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:08:41,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796903118] [2023-12-19 04:08:41,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:08:41,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:08:41,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:08:41,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:08:41,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:08:41,268 INFO L87 Difference]: Start difference. First operand 265624 states and 276470 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:45,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:08:45,433 INFO L93 Difference]: Finished difference Result 511583 states and 532959 transitions. [2023-12-19 04:08:45,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:08:45,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 818 [2023-12-19 04:08:45,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:08:45,876 INFO L225 Difference]: With dead ends: 511583 [2023-12-19 04:08:45,876 INFO L226 Difference]: Without dead ends: 265639 [2023-12-19 04:08:46,005 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 [2023-12-19 04:08:46,005 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 780 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 2551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:08:46,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1691 Invalid, 2551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 04:08:46,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265639 states. [2023-12-19 04:08:49,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265639 to 259324. [2023-12-19 04:08:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259324 states, 259323 states have (on average 1.0389437111247364) internal successors, (269422), 259323 states have internal predecessors, (269422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:49,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259324 states to 259324 states and 269422 transitions. [2023-12-19 04:08:49,965 INFO L78 Accepts]: Start accepts. Automaton has 259324 states and 269422 transitions. Word has length 818 [2023-12-19 04:08:49,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:08:49,966 INFO L495 AbstractCegarLoop]: Abstraction has 259324 states and 269422 transitions. [2023-12-19 04:08:49,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:49,966 INFO L276 IsEmpty]: Start isEmpty. Operand 259324 states and 269422 transitions. [2023-12-19 04:08:50,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2023-12-19 04:08:50,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:08:50,011 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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:08:50,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 04:08:50,011 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:08:50,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:08:50,012 INFO L85 PathProgramCache]: Analyzing trace with hash 366828889, now seen corresponding path program 1 times [2023-12-19 04:08:50,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:08:50,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609259805] [2023-12-19 04:08:50,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:08:50,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:08:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:08:50,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3382 backedges. 2233 proven. 0 refuted. 0 times theorem prover too weak. 1149 trivial. 0 not checked. [2023-12-19 04:08:50,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:08:50,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609259805] [2023-12-19 04:08:50,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609259805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:08:50,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:08:50,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:08:50,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395208502] [2023-12-19 04:08:50,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:08:50,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:08:50,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:08:50,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:08:50,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:08:50,741 INFO L87 Difference]: Start difference. First operand 259324 states and 269422 transitions. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:54,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:08:54,877 INFO L93 Difference]: Finished difference Result 512359 states and 532732 transitions. [2023-12-19 04:08:54,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:08:54,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 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 902 [2023-12-19 04:08:54,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:08:55,312 INFO L225 Difference]: With dead ends: 512359 [2023-12-19 04:08:55,312 INFO L226 Difference]: Without dead ends: 274294 [2023-12-19 04:08:55,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:08:55,399 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 691 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:08:55,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 934 Invalid, 2479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 04:08:55,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274294 states. [2023-12-19 04:08:58,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274294 to 271924. [2023-12-19 04:08:58,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271924 states, 271923 states have (on average 1.0377165594672022) internal successors, (282179), 271923 states have internal predecessors, (282179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:59,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271924 states to 271924 states and 282179 transitions. [2023-12-19 04:08:59,073 INFO L78 Accepts]: Start accepts. Automaton has 271924 states and 282179 transitions. Word has length 902 [2023-12-19 04:08:59,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:08:59,074 INFO L495 AbstractCegarLoop]: Abstraction has 271924 states and 282179 transitions. [2023-12-19 04:08:59,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:08:59,074 INFO L276 IsEmpty]: Start isEmpty. Operand 271924 states and 282179 transitions. [2023-12-19 04:08:59,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2023-12-19 04:08:59,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:08:59,119 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, 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, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:08:59,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 04:08:59,119 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:08:59,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:08:59,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2048773232, now seen corresponding path program 1 times [2023-12-19 04:08:59,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:08:59,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520334204] [2023-12-19 04:08:59,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:08:59,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:08:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:09:00,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2253 backedges. 1564 proven. 75 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2023-12-19 04:09:00,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:09:00,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520334204] [2023-12-19 04:09:00,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520334204] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:09:00,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103816312] [2023-12-19 04:09:00,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:09:00,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:09:00,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:09:00,264 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) [2023-12-19 04:09:00,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 04:09:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:09:00,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 04:09:00,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:09:01,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2253 backedges. 1772 proven. 0 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2023-12-19 04:09:01,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:09:01,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103816312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:09:01,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:09:01,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-12-19 04:09:01,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775081844] [2023-12-19 04:09:01,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:09:01,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:09:01,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:09:01,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:09:01,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:09:01,028 INFO L87 Difference]: Start difference. First operand 271924 states and 282179 transitions. Second operand has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:09:05,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:09:05,440 INFO L93 Difference]: Finished difference Result 529685 states and 550005 transitions. [2023-12-19 04:09:05,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:09:05,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 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 904 [2023-12-19 04:09:05,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:09:05,975 INFO L225 Difference]: With dead ends: 529685 [2023-12-19 04:09:05,976 INFO L226 Difference]: Without dead ends: 275870 [2023-12-19 04:09:06,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 907 GetRequests, 903 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:09:06,490 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 1391 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4315 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 4706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 4315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:09:06,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 744 Invalid, 4706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 4315 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 04:09:06,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275870 states. [2023-12-19 04:09:09,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275870 to 271133. [2023-12-19 04:09:09,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271133 states, 271132 states have (on average 1.0353517843707125) internal successors, (280717), 271132 states have internal predecessors, (280717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:09:10,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271133 states to 271133 states and 280717 transitions. [2023-12-19 04:09:10,161 INFO L78 Accepts]: Start accepts. Automaton has 271133 states and 280717 transitions. Word has length 904 [2023-12-19 04:09:10,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:09:10,161 INFO L495 AbstractCegarLoop]: Abstraction has 271133 states and 280717 transitions. [2023-12-19 04:09:10,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:09:10,161 INFO L276 IsEmpty]: Start isEmpty. Operand 271133 states and 280717 transitions. [2023-12-19 04:09:10,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 913 [2023-12-19 04:09:10,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:09:10,203 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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 04:09:10,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 04:09:10,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-19 04:09:10,410 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:09:10,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:09:10,410 INFO L85 PathProgramCache]: Analyzing trace with hash 587181508, now seen corresponding path program 1 times [2023-12-19 04:09:10,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:09:10,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735481899] [2023-12-19 04:09:10,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:09:10,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:09:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:09:11,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3329 backedges. 2193 proven. 0 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2023-12-19 04:09:11,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:09:11,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735481899] [2023-12-19 04:09:11,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735481899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:09:11,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:09:11,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:09:11,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671540470] [2023-12-19 04:09:11,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:09:11,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:09:11,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:09:11,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:09:11,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:09:11,285 INFO L87 Difference]: Start difference. First operand 271133 states and 280717 transitions. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:09:15,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:09:15,021 INFO L93 Difference]: Finished difference Result 525736 states and 544726 transitions. [2023-12-19 04:09:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:09:15,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 912 [2023-12-19 04:09:15,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:09:15,417 INFO L225 Difference]: With dead ends: 525736 [2023-12-19 04:09:15,417 INFO L226 Difference]: Without dead ends: 275862 [2023-12-19 04:09:15,497 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 [2023-12-19 04:09:15,498 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 718 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 2402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:09:15,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 1748 Invalid, 2402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 04:09:15,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275862 states. [2023-12-19 04:09:18,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275862 to 275068. [2023-12-19 04:09:18,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275068 states, 275067 states have (on average 1.034838784732447) internal successors, (284650), 275067 states have internal predecessors, (284650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:09:19,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275068 states to 275068 states and 284650 transitions. [2023-12-19 04:09:19,577 INFO L78 Accepts]: Start accepts. Automaton has 275068 states and 284650 transitions. Word has length 912 [2023-12-19 04:09:19,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:09:19,578 INFO L495 AbstractCegarLoop]: Abstraction has 275068 states and 284650 transitions. [2023-12-19 04:09:19,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:09:19,578 INFO L276 IsEmpty]: Start isEmpty. Operand 275068 states and 284650 transitions. [2023-12-19 04:09:19,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2023-12-19 04:09:19,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:09:19,627 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:09:19,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 04:09:19,627 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:09:19,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:09:19,628 INFO L85 PathProgramCache]: Analyzing trace with hash 649017008, now seen corresponding path program 1 times [2023-12-19 04:09:19,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:09:19,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127428580] [2023-12-19 04:09:19,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:09:19,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:09:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:09:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1781 backedges. 1264 proven. 0 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2023-12-19 04:09:20,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:09:20,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127428580] [2023-12-19 04:09:20,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127428580] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:09:20,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:09:20,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:09:20,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481507798] [2023-12-19 04:09:20,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:09:20,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:09:20,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:09:20,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:09:20,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:09:20,718 INFO L87 Difference]: Start difference. First operand 275068 states and 284650 transitions. Second operand has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:09:27,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:09:27,608 INFO L93 Difference]: Finished difference Result 606138 states and 627460 transitions. [2023-12-19 04:09:27,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:09:27,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 931 [2023-12-19 04:09:27,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:09:28,481 INFO L225 Difference]: With dead ends: 606138 [2023-12-19 04:09:28,482 INFO L226 Difference]: Without dead ends: 338158 [2023-12-19 04:09:28,736 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 [2023-12-19 04:09:28,736 INFO L413 NwaCegarLoop]: 1380 mSDtfsCounter, 1429 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 5466 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 6224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 5466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:09:28,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1429 Valid, 1572 Invalid, 6224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 5466 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-19 04:09:29,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338158 states.