/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 23:13:53,846 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 23:13:53,936 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-25 23:13:53,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 23:13:53,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 23:13:53,973 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 23:13:53,974 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 23:13:53,974 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 23:13:53,975 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 23:13:53,978 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 23:13:53,979 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 23:13:53,979 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 23:13:53,980 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 23:13:53,981 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 23:13:53,981 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 23:13:53,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 23:13:53,982 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 23:13:53,982 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 23:13:53,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 23:13:53,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 23:13:53,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 23:13:53,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 23:13:53,984 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 23:13:53,984 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 23:13:53,985 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 23:13:53,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 23:13:53,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 23:13:53,985 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 23:13:53,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 23:13:53,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 23:13:53,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 23:13:53,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 23:13:53,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 23:13:53,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 23:13:53,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 23:13:53,988 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 23:13:53,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 23:13:53,988 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 23:13:53,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 23:13:53,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 23:13:53,988 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 23:13:54,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 23:13:54,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 23:13:54,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 23:13:54,262 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 23:13:54,263 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 23:13:54,264 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.c [2023-12-25 23:13:55,385 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 23:13:55,668 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 23:13:55,668 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.c [2023-12-25 23:13:55,681 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f0d0a8c3/191ffbc9602946e5804a08f759f0d7ef/FLAGd390b1e7a [2023-12-25 23:13:55,698 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f0d0a8c3/191ffbc9602946e5804a08f759f0d7ef [2023-12-25 23:13:55,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 23:13:55,702 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 23:13:55,704 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 23:13:55,705 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 23:13:55,708 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 23:13:55,709 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 11:13:55" (1/1) ... [2023-12-25 23:13:55,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282bab7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:13:55, skipping insertion in model container [2023-12-25 23:13:55,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 11:13:55" (1/1) ... [2023-12-25 23:13:55,759 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 23:13:55,924 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.c[1255,1268] [2023-12-25 23:13:56,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 23:13:56,119 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 23:13:56,131 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.c[1255,1268] [2023-12-25 23:13:56,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 23:13:56,212 INFO L206 MainTranslator]: Completed translation [2023-12-25 23:13:56,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:13:56 WrapperNode [2023-12-25 23:13:56,213 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 23:13:56,214 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 23:13:56,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 23:13:56,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 23:13:56,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:13:56" (1/1) ... [2023-12-25 23:13:56,258 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:13:56" (1/1) ... [2023-12-25 23:13:56,380 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1422 [2023-12-25 23:13:56,380 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 23:13:56,381 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 23:13:56,381 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 23:13:56,381 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 23:13:56,390 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:13:56" (1/1) ... [2023-12-25 23:13:56,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:13:56" (1/1) ... [2023-12-25 23:13:56,421 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:13:56" (1/1) ... [2023-12-25 23:13:56,483 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]. [2023-12-25 23:13:56,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:13:56" (1/1) ... [2023-12-25 23:13:56,483 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:13:56" (1/1) ... [2023-12-25 23:13:56,526 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:13:56" (1/1) ... [2023-12-25 23:13:56,533 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:13:56" (1/1) ... [2023-12-25 23:13:56,561 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:13:56" (1/1) ... [2023-12-25 23:13:56,575 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:13:56" (1/1) ... [2023-12-25 23:13:56,605 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 23:13:56,607 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 23:13:56,607 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 23:13:56,607 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 23:13:56,608 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:13:56" (1/1) ... [2023-12-25 23:13:56,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 23:13:56,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:13:56,633 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) [2023-12-25 23:13:56,656 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 [2023-12-25 23:13:56,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 23:13:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 23:13:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 23:13:56,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 23:13:56,858 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 23:13:56,860 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 23:13:58,011 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 23:13:58,063 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 23:13:58,064 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 23:13:58,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 11:13:58 BoogieIcfgContainer [2023-12-25 23:13:58,065 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 23:13:58,068 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 23:13:58,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 23:13:58,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 23:13:58,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 11:13:55" (1/3) ... [2023-12-25 23:13:58,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2d3fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 11:13:58, skipping insertion in model container [2023-12-25 23:13:58,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:13:56" (2/3) ... [2023-12-25 23:13:58,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2d3fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 11:13:58, skipping insertion in model container [2023-12-25 23:13:58,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 11:13:58" (3/3) ... [2023-12-25 23:13:58,073 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_palu.c [2023-12-25 23:13:58,088 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 23:13:58,089 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 23:13:58,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 23:13:58,157 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;@bf2d383, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 23:13:58,157 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 23:13:58,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 272 states, 270 states have (on average 1.6666666666666667) internal successors, (450), 271 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:58,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-25 23:13:58,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:58,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:13:58,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:58,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:58,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1975307554, now seen corresponding path program 1 times [2023-12-25 23:13:58,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:58,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651975355] [2023-12-25 23:13:58,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:58,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:58,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:13:58,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651975355] [2023-12-25 23:13:58,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651975355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:13:58,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:13:58,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:13:58,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297757507] [2023-12-25 23:13:58,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:13:58,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:13:58,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:13:58,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:13:58,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:13:58,971 INFO L87 Difference]: Start difference. First operand has 272 states, 270 states have (on average 1.6666666666666667) internal successors, (450), 271 states have internal predecessors, (450), 0 states have call successors, (0), 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 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:59,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:59,068 INFO L93 Difference]: Finished difference Result 513 states and 851 transitions. [2023-12-25 23:13:59,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 23:13:59,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2023-12-25 23:13:59,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:59,087 INFO L225 Difference]: With dead ends: 513 [2023-12-25 23:13:59,087 INFO L226 Difference]: Without dead ends: 272 [2023-12-25 23:13:59,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:13:59,094 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:59,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1324 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:13:59,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-12-25 23:13:59,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2023-12-25 23:13:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 1.6531365313653137) internal successors, (448), 271 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:59,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 448 transitions. [2023-12-25 23:13:59,161 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 448 transitions. Word has length 50 [2023-12-25 23:13:59,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:59,162 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 448 transitions. [2023-12-25 23:13:59,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:59,162 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 448 transitions. [2023-12-25 23:13:59,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-25 23:13:59,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:59,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:13:59,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 23:13:59,164 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:59,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:59,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1106717254, now seen corresponding path program 1 times [2023-12-25 23:13:59,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:59,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064816680] [2023-12-25 23:13:59,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:59,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:59,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:13:59,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064816680] [2023-12-25 23:13:59,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064816680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:13:59,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:13:59,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:13:59,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456565424] [2023-12-25 23:13:59,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:13:59,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:13:59,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:13:59,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:13:59,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:13:59,392 INFO L87 Difference]: Start difference. First operand 272 states and 448 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:59,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:59,423 INFO L93 Difference]: Finished difference Result 516 states and 849 transitions. [2023-12-25 23:13:59,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 23:13:59,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-12-25 23:13:59,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:59,430 INFO L225 Difference]: With dead ends: 516 [2023-12-25 23:13:59,430 INFO L226 Difference]: Without dead ends: 275 [2023-12-25 23:13:59,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:13:59,435 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:59,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1322 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:13:59,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-25 23:13:59,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 274. [2023-12-25 23:13:59,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.6483516483516483) internal successors, (450), 273 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 450 transitions. [2023-12-25 23:13:59,443 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 450 transitions. Word has length 51 [2023-12-25 23:13:59,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:59,443 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 450 transitions. [2023-12-25 23:13:59,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:59,444 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 450 transitions. [2023-12-25 23:13:59,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-25 23:13:59,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:59,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:13:59,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 23:13:59,445 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:59,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:59,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1513071678, now seen corresponding path program 1 times [2023-12-25 23:13:59,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:59,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299770752] [2023-12-25 23:13:59,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:59,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:59,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:59,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:13:59,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299770752] [2023-12-25 23:13:59,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299770752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:13:59,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:13:59,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:13:59,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258629764] [2023-12-25 23:13:59,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:13:59,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:13:59,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:13:59,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:13:59,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:13:59,833 INFO L87 Difference]: Start difference. First operand 274 states and 450 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:59,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:59,887 INFO L93 Difference]: Finished difference Result 754 states and 1239 transitions. [2023-12-25 23:13:59,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:13:59,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-25 23:13:59,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:59,890 INFO L225 Difference]: With dead ends: 754 [2023-12-25 23:13:59,890 INFO L226 Difference]: Without dead ends: 511 [2023-12-25 23:13:59,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:13:59,893 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 386 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:59,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 1430 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:13:59,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2023-12-25 23:13:59,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 276. [2023-12-25 23:13:59,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.6436363636363636) internal successors, (452), 275 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:59,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 452 transitions. [2023-12-25 23:13:59,906 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 452 transitions. Word has length 52 [2023-12-25 23:13:59,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:59,908 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 452 transitions. [2023-12-25 23:13:59,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:59,910 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 452 transitions. [2023-12-25 23:13:59,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-25 23:13:59,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:59,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:13:59,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 23:13:59,921 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:59,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:59,921 INFO L85 PathProgramCache]: Analyzing trace with hash -450124498, now seen corresponding path program 1 times [2023-12-25 23:13:59,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:59,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391486075] [2023-12-25 23:13:59,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:59,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:00,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:00,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391486075] [2023-12-25 23:14:00,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391486075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:14:00,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:14:00,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:14:00,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410373807] [2023-12-25 23:14:00,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:14:00,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:14:00,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:00,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:14:00,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:14:00,182 INFO L87 Difference]: Start difference. First operand 276 states and 452 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:00,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:00,267 INFO L93 Difference]: Finished difference Result 799 states and 1310 transitions. [2023-12-25 23:14:00,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 23:14:00,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-25 23:14:00,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:00,270 INFO L225 Difference]: With dead ends: 799 [2023-12-25 23:14:00,270 INFO L226 Difference]: Without dead ends: 554 [2023-12-25 23:14:00,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:14:00,279 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 788 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:00,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 2380 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:14:00,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-12-25 23:14:00,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 299. [2023-12-25 23:14:00,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.6409395973154361) internal successors, (489), 298 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:00,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 489 transitions. [2023-12-25 23:14:00,291 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 489 transitions. Word has length 53 [2023-12-25 23:14:00,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:00,291 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 489 transitions. [2023-12-25 23:14:00,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:00,291 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 489 transitions. [2023-12-25 23:14:00,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-25 23:14:00,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:00,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:00,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-25 23:14:00,295 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:00,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:00,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2079846670, now seen corresponding path program 1 times [2023-12-25 23:14:00,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:00,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615198462] [2023-12-25 23:14:00,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:00,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:00,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:00,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615198462] [2023-12-25 23:14:00,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615198462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:14:00,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:14:00,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:14:00,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852137239] [2023-12-25 23:14:00,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:14:00,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:14:00,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:00,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:14:00,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:14:00,856 INFO L87 Difference]: Start difference. First operand 299 states and 489 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:01,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:01,052 INFO L93 Difference]: Finished difference Result 1108 states and 1807 transitions. [2023-12-25 23:14:01,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 23:14:01,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-12-25 23:14:01,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:01,055 INFO L225 Difference]: With dead ends: 1108 [2023-12-25 23:14:01,056 INFO L226 Difference]: Without dead ends: 840 [2023-12-25 23:14:01,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:14:01,057 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 2248 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2248 SdHoareTripleChecker+Valid, 2342 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:01,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2248 Valid, 2342 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:14:01,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2023-12-25 23:14:01,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 305. [2023-12-25 23:14:01,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.6348684210526316) internal successors, (497), 304 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:01,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 497 transitions. [2023-12-25 23:14:01,065 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 497 transitions. Word has length 54 [2023-12-25 23:14:01,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:01,065 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 497 transitions. [2023-12-25 23:14:01,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:01,065 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 497 transitions. [2023-12-25 23:14:01,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-25 23:14:01,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:01,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:01,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-25 23:14:01,066 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:01,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:01,067 INFO L85 PathProgramCache]: Analyzing trace with hash -148065544, now seen corresponding path program 1 times [2023-12-25 23:14:01,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:01,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138257664] [2023-12-25 23:14:01,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:01,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:01,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:01,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138257664] [2023-12-25 23:14:01,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138257664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:14:01,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:14:01,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:14:01,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198754467] [2023-12-25 23:14:01,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:14:01,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:14:01,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:01,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:14:01,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:14:01,570 INFO L87 Difference]: Start difference. First operand 305 states and 497 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:01,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:01,837 INFO L93 Difference]: Finished difference Result 1163 states and 1885 transitions. [2023-12-25 23:14:01,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 23:14:01,837 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-25 23:14:01,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:01,842 INFO L225 Difference]: With dead ends: 1163 [2023-12-25 23:14:01,843 INFO L226 Difference]: Without dead ends: 889 [2023-12-25 23:14:01,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-12-25 23:14:01,844 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 2700 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2700 SdHoareTripleChecker+Valid, 2796 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:01,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2700 Valid, 2796 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:14:01,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2023-12-25 23:14:01,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 321. [2023-12-25 23:14:01,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.621875) internal successors, (519), 320 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:01,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 519 transitions. [2023-12-25 23:14:01,860 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 519 transitions. Word has length 55 [2023-12-25 23:14:01,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:01,861 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 519 transitions. [2023-12-25 23:14:01,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:01,863 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 519 transitions. [2023-12-25 23:14:01,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-25 23:14:01,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:01,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:01,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-25 23:14:01,864 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:01,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:01,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1090434322, now seen corresponding path program 1 times [2023-12-25 23:14:01,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:01,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691290278] [2023-12-25 23:14:01,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:01,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:02,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:02,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691290278] [2023-12-25 23:14:02,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691290278] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:14:02,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:14:02,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:14:02,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879474259] [2023-12-25 23:14:02,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:14:02,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:14:02,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:02,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:14:02,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:14:02,464 INFO L87 Difference]: Start difference. First operand 321 states and 519 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:02,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:02,663 INFO L93 Difference]: Finished difference Result 890 states and 1436 transitions. [2023-12-25 23:14:02,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:14:02,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-25 23:14:02,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:02,666 INFO L225 Difference]: With dead ends: 890 [2023-12-25 23:14:02,666 INFO L226 Difference]: Without dead ends: 600 [2023-12-25 23:14:02,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:14:02,668 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1192 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:02,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 1176 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:14:02,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2023-12-25 23:14:02,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 372. [2023-12-25 23:14:02,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 1.6118598382749325) internal successors, (598), 371 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:02,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 598 transitions. [2023-12-25 23:14:02,677 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 598 transitions. Word has length 55 [2023-12-25 23:14:02,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:02,677 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 598 transitions. [2023-12-25 23:14:02,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:02,677 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 598 transitions. [2023-12-25 23:14:02,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-25 23:14:02,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:02,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:02,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-25 23:14:02,679 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:02,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:02,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1625358106, now seen corresponding path program 1 times [2023-12-25 23:14:02,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:02,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190671687] [2023-12-25 23:14:02,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:02,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:03,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:03,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190671687] [2023-12-25 23:14:03,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190671687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:14:03,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:14:03,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:14:03,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833855038] [2023-12-25 23:14:03,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:14:03,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:14:03,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:03,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:14:03,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:14:03,233 INFO L87 Difference]: Start difference. First operand 372 states and 598 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:03,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:03,350 INFO L93 Difference]: Finished difference Result 964 states and 1551 transitions. [2023-12-25 23:14:03,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 23:14:03,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2023-12-25 23:14:03,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:03,354 INFO L225 Difference]: With dead ends: 964 [2023-12-25 23:14:03,354 INFO L226 Difference]: Without dead ends: 651 [2023-12-25 23:14:03,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-25 23:14:03,355 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 1563 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:03,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1563 Valid, 2230 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:14:03,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2023-12-25 23:14:03,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 382. [2023-12-25 23:14:03,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.6062992125984252) internal successors, (612), 381 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:03,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 612 transitions. [2023-12-25 23:14:03,366 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 612 transitions. Word has length 56 [2023-12-25 23:14:03,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:03,367 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 612 transitions. [2023-12-25 23:14:03,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:03,367 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 612 transitions. [2023-12-25 23:14:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-25 23:14:03,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:03,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:03,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-25 23:14:03,368 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:03,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:03,368 INFO L85 PathProgramCache]: Analyzing trace with hash 320888838, now seen corresponding path program 1 times [2023-12-25 23:14:03,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:03,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656396792] [2023-12-25 23:14:03,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:03,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:03,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:03,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656396792] [2023-12-25 23:14:03,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656396792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:14:03,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:14:03,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:14:03,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587237680] [2023-12-25 23:14:03,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:14:03,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:14:03,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:03,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:14:03,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:14:03,606 INFO L87 Difference]: Start difference. First operand 382 states and 612 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:03,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:03,677 INFO L93 Difference]: Finished difference Result 908 states and 1460 transitions. [2023-12-25 23:14:03,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:14:03,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-12-25 23:14:03,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:03,680 INFO L225 Difference]: With dead ends: 908 [2023-12-25 23:14:03,680 INFO L226 Difference]: Without dead ends: 564 [2023-12-25 23:14:03,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:14:03,681 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1174 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:03,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 1300 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:14:03,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-12-25 23:14:03,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 355. [2023-12-25 23:14:03,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.6045197740112995) internal successors, (568), 354 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:03,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 568 transitions. [2023-12-25 23:14:03,689 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 568 transitions. Word has length 57 [2023-12-25 23:14:03,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:03,690 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 568 transitions. [2023-12-25 23:14:03,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:03,690 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 568 transitions. [2023-12-25 23:14:03,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-12-25 23:14:03,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:03,692 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:03,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-25 23:14:03,692 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:03,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:03,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1607716366, now seen corresponding path program 1 times [2023-12-25 23:14:03,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:03,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917571202] [2023-12-25 23:14:03,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:03,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:04,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:04,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917571202] [2023-12-25 23:14:04,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917571202] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:14:04,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55321253] [2023-12-25 23:14:04,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:04,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:14:04,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:14:04,611 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) [2023-12-25 23:14:04,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-25 23:14:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:05,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-25 23:14:05,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:14:05,552 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:05,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 23:14:05,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55321253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:14:05,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 23:14:05,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 14 [2023-12-25 23:14:05,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414399103] [2023-12-25 23:14:05,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:14:05,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 23:14:05,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:05,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 23:14:05,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-12-25 23:14:05,555 INFO L87 Difference]: Start difference. First operand 355 states and 568 transitions. Second operand has 11 states, 11 states have (on average 19.545454545454547) internal successors, (215), 10 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) [2023-12-25 23:14:07,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:07,095 INFO L93 Difference]: Finished difference Result 1919 states and 3086 transitions. [2023-12-25 23:14:07,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-25 23:14:07,095 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 19.545454545454547) internal successors, (215), 10 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 215 [2023-12-25 23:14:07,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:07,101 INFO L225 Difference]: With dead ends: 1919 [2023-12-25 23:14:07,101 INFO L226 Difference]: Without dead ends: 1624 [2023-12-25 23:14:07,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=277, Invalid=1363, Unknown=0, NotChecked=0, Total=1640 [2023-12-25 23:14:07,103 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 5524 mSDsluCounter, 2723 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5524 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:07,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5524 Valid, 3073 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 23:14:07,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2023-12-25 23:14:07,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 360. [2023-12-25 23:14:07,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.5988857938718664) internal successors, (574), 359 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:07,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 574 transitions. [2023-12-25 23:14:07,118 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 574 transitions. Word has length 215 [2023-12-25 23:14:07,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:07,118 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 574 transitions. [2023-12-25 23:14:07,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.545454545454547) internal successors, (215), 10 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) [2023-12-25 23:14:07,119 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 574 transitions. [2023-12-25 23:14:07,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-25 23:14:07,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:07,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:07,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-25 23:14:07,332 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 [2023-12-25 23:14:07,333 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:07,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:07,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1354600416, now seen corresponding path program 1 times [2023-12-25 23:14:07,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:07,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825558230] [2023-12-25 23:14:07,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:07,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:08,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:08,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825558230] [2023-12-25 23:14:08,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825558230] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:14:08,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278388230] [2023-12-25 23:14:08,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:08,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:14:08,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:14:08,305 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) [2023-12-25 23:14:08,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-25 23:14:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:08,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-25 23:14:08,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:14:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:09,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:14:10,555 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:10,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278388230] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:14:10,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:14:10,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 12] total 24 [2023-12-25 23:14:10,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926878232] [2023-12-25 23:14:10,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:14:10,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-25 23:14:10,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:10,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-25 23:14:10,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2023-12-25 23:14:10,559 INFO L87 Difference]: Start difference. First operand 360 states and 574 transitions. Second operand has 25 states, 25 states have (on average 23.92) internal successors, (598), 24 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:13,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:13,789 INFO L93 Difference]: Finished difference Result 4215 states and 6793 transitions. [2023-12-25 23:14:13,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-25 23:14:13,790 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 23.92) internal successors, (598), 24 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2023-12-25 23:14:13,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:13,799 INFO L225 Difference]: With dead ends: 4215 [2023-12-25 23:14:13,799 INFO L226 Difference]: Without dead ends: 2467 [2023-12-25 23:14:13,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1553 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1106, Invalid=4900, Unknown=0, NotChecked=0, Total=6006 [2023-12-25 23:14:13,803 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 18602 mSDsluCounter, 8736 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18602 SdHoareTripleChecker+Valid, 9465 SdHoareTripleChecker+Invalid, 2468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:13,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18602 Valid, 9465 Invalid, 2468 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [196 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-25 23:14:13,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2023-12-25 23:14:13,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 576. [2023-12-25 23:14:13,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 1.5930434782608696) internal successors, (916), 575 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 916 transitions. [2023-12-25 23:14:13,825 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 916 transitions. Word has length 216 [2023-12-25 23:14:13,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:13,826 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 916 transitions. [2023-12-25 23:14:13,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 23.92) internal successors, (598), 24 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:13,826 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 916 transitions. [2023-12-25 23:14:13,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-25 23:14:13,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:13,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:13,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-25 23:14:14,038 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 [2023-12-25 23:14:14,039 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:14,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:14,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1577848904, now seen corresponding path program 1 times [2023-12-25 23:14:14,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:14,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487911664] [2023-12-25 23:14:14,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:14,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:15,074 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:15,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:15,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487911664] [2023-12-25 23:14:15,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487911664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:14:15,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:14:15,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:14:15,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114782257] [2023-12-25 23:14:15,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:14:15,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:14:15,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:15,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:14:15,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:14:15,077 INFO L87 Difference]: Start difference. First operand 576 states and 916 transitions. Second operand has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:15,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:15,379 INFO L93 Difference]: Finished difference Result 1460 states and 2343 transitions. [2023-12-25 23:14:15,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:14:15,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 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 218 [2023-12-25 23:14:15,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:15,383 INFO L225 Difference]: With dead ends: 1460 [2023-12-25 23:14:15,383 INFO L226 Difference]: Without dead ends: 959 [2023-12-25 23:14:15,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 23:14:15,384 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 1255 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:15,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 1197 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 23:14:15,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-12-25 23:14:15,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 910. [2023-12-25 23:14:15,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 909 states have (on average 1.613861386138614) internal successors, (1467), 909 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:15,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1467 transitions. [2023-12-25 23:14:15,412 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1467 transitions. Word has length 218 [2023-12-25 23:14:15,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:15,413 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1467 transitions. [2023-12-25 23:14:15,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:15,413 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1467 transitions. [2023-12-25 23:14:15,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-12-25 23:14:15,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:15,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:15,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-25 23:14:15,416 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:15,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:15,417 INFO L85 PathProgramCache]: Analyzing trace with hash 199842262, now seen corresponding path program 1 times [2023-12-25 23:14:15,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:15,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653168459] [2023-12-25 23:14:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:15,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:16,883 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-25 23:14:16,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:16,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653168459] [2023-12-25 23:14:16,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653168459] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:14:16,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843984498] [2023-12-25 23:14:16,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:16,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:14:16,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:14:16,885 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) [2023-12-25 23:14:16,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-25 23:14:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:17,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-25 23:14:17,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:14:18,113 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:18,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:14:19,049 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:19,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843984498] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:14:19,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:14:19,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15, 14] total 34 [2023-12-25 23:14:19,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814247849] [2023-12-25 23:14:19,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:14:19,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-25 23:14:19,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:19,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-25 23:14:19,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=894, Unknown=0, NotChecked=0, Total=1122 [2023-12-25 23:14:19,054 INFO L87 Difference]: Start difference. First operand 910 states and 1467 transitions. Second operand has 34 states, 34 states have (on average 17.764705882352942) internal successors, (604), 34 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:27,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:27,217 INFO L93 Difference]: Finished difference Result 10079 states and 16188 transitions. [2023-12-25 23:14:27,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2023-12-25 23:14:27,218 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 17.764705882352942) internal successors, (604), 34 states have internal predecessors, (604), 0 states have call successors, (0), 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 219 [2023-12-25 23:14:27,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:27,247 INFO L225 Difference]: With dead ends: 10079 [2023-12-25 23:14:27,247 INFO L226 Difference]: Without dead ends: 9216 [2023-12-25 23:14:27,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12033 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4961, Invalid=29821, Unknown=0, NotChecked=0, Total=34782 [2023-12-25 23:14:27,262 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 29447 mSDsluCounter, 9765 mSDsCounter, 0 mSdLazyCounter, 5199 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29447 SdHoareTripleChecker+Valid, 10344 SdHoareTripleChecker+Invalid, 5211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 5199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:27,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29447 Valid, 10344 Invalid, 5211 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 5199 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-25 23:14:27,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9216 states. [2023-12-25 23:14:27,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9216 to 958. [2023-12-25 23:14:27,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 1.598746081504702) internal successors, (1530), 957 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1530 transitions. [2023-12-25 23:14:27,338 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1530 transitions. Word has length 219 [2023-12-25 23:14:27,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:27,339 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1530 transitions. [2023-12-25 23:14:27,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 17.764705882352942) internal successors, (604), 34 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:27,339 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1530 transitions. [2023-12-25 23:14:27,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-25 23:14:27,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:27,342 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:27,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-25 23:14:27,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:14:27,552 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:27,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:27,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1382672566, now seen corresponding path program 1 times [2023-12-25 23:14:27,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:27,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672029605] [2023-12-25 23:14:27,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:27,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:28,210 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:28,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:28,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672029605] [2023-12-25 23:14:28,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672029605] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:14:28,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372983503] [2023-12-25 23:14:28,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:28,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:14:28,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:14:28,212 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) [2023-12-25 23:14:28,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-25 23:14:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:28,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 1474 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-25 23:14:28,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:14:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:29,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:14:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:29,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372983503] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:14:29,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:14:29,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 11] total 23 [2023-12-25 23:14:29,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748067878] [2023-12-25 23:14:29,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:14:29,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-25 23:14:29,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:29,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-25 23:14:29,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2023-12-25 23:14:29,849 INFO L87 Difference]: Start difference. First operand 958 states and 1530 transitions. Second operand has 24 states, 24 states have (on average 23.375) internal successors, (561), 23 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:31,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:31,013 INFO L93 Difference]: Finished difference Result 2344 states and 3741 transitions. [2023-12-25 23:14:31,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 23:14:31,013 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 23.375) internal successors, (561), 23 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2023-12-25 23:14:31,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:31,018 INFO L225 Difference]: With dead ends: 2344 [2023-12-25 23:14:31,019 INFO L226 Difference]: Without dead ends: 1421 [2023-12-25 23:14:31,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=275, Invalid=1131, Unknown=0, NotChecked=0, Total=1406 [2023-12-25 23:14:31,021 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 4842 mSDsluCounter, 4250 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4842 SdHoareTripleChecker+Valid, 4615 SdHoareTripleChecker+Invalid, 1670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:31,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4842 Valid, 4615 Invalid, 1670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 23:14:31,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2023-12-25 23:14:31,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 977. [2023-12-25 23:14:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 1.5952868852459017) internal successors, (1557), 976 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:31,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1557 transitions. [2023-12-25 23:14:31,046 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1557 transitions. Word has length 220 [2023-12-25 23:14:31,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:31,047 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1557 transitions. [2023-12-25 23:14:31,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 23.375) internal successors, (561), 23 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:31,047 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1557 transitions. [2023-12-25 23:14:31,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2023-12-25 23:14:31,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:31,052 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:31,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-25 23:14:31,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:14:31,261 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:31,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:31,262 INFO L85 PathProgramCache]: Analyzing trace with hash 2124216836, now seen corresponding path program 1 times [2023-12-25 23:14:31,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:31,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203193328] [2023-12-25 23:14:31,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:31,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:33,010 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 186 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:33,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:33,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203193328] [2023-12-25 23:14:33,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203193328] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:14:33,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772945540] [2023-12-25 23:14:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:33,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:14:33,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:14:33,012 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) [2023-12-25 23:14:33,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-25 23:14:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:33,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 2530 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 23:14:33,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:14:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 84 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:34,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:14:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 209 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:34,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772945540] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:14:34,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:14:34,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 10] total 25 [2023-12-25 23:14:34,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096382812] [2023-12-25 23:14:34,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:14:34,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-25 23:14:34,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:34,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-25 23:14:34,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2023-12-25 23:14:34,817 INFO L87 Difference]: Start difference. First operand 977 states and 1557 transitions. Second operand has 25 states, 25 states have (on average 41.16) internal successors, (1029), 25 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:38,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:38,494 INFO L93 Difference]: Finished difference Result 6617 states and 10551 transitions. [2023-12-25 23:14:38,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-25 23:14:38,494 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 41.16) internal successors, (1029), 25 states have internal predecessors, (1029), 0 states have call successors, (0), 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 380 [2023-12-25 23:14:38,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:38,523 INFO L225 Difference]: With dead ends: 6617 [2023-12-25 23:14:38,523 INFO L226 Difference]: Without dead ends: 6078 [2023-12-25 23:14:38,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 787 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3461 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2038, Invalid=9092, Unknown=0, NotChecked=0, Total=11130 [2023-12-25 23:14:38,537 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 11968 mSDsluCounter, 5719 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11968 SdHoareTripleChecker+Valid, 6103 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:38,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11968 Valid, 6103 Invalid, 2566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-25 23:14:38,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6078 states. [2023-12-25 23:14:38,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6078 to 1835. [2023-12-25 23:14:38,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1835 states, 1834 states have (on average 1.5605234460196293) internal successors, (2862), 1834 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:38,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2862 transitions. [2023-12-25 23:14:38,634 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2862 transitions. Word has length 380 [2023-12-25 23:14:38,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:38,634 INFO L495 AbstractCegarLoop]: Abstraction has 1835 states and 2862 transitions. [2023-12-25 23:14:38,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 41.16) internal successors, (1029), 25 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:38,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2862 transitions. [2023-12-25 23:14:38,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-12-25 23:14:38,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:38,642 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:38,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-25 23:14:38,843 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,SelfDestructingSolverStorable14 [2023-12-25 23:14:38,843 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:38,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:38,844 INFO L85 PathProgramCache]: Analyzing trace with hash -696206628, now seen corresponding path program 1 times [2023-12-25 23:14:38,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:38,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625961619] [2023-12-25 23:14:38,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:38,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:40,792 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-12-25 23:14:40,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:40,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625961619] [2023-12-25 23:14:40,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625961619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:14:40,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:14:40,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:14:40,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892475406] [2023-12-25 23:14:40,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:14:40,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:14:40,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:40,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:14:40,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:14:40,794 INFO L87 Difference]: Start difference. First operand 1835 states and 2862 transitions. Second operand has 5 states, 5 states have (on average 46.4) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:41,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:41,098 INFO L93 Difference]: Finished difference Result 4032 states and 6304 transitions. [2023-12-25 23:14:41,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:14:41,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 382 [2023-12-25 23:14:41,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:41,101 INFO L225 Difference]: With dead ends: 4032 [2023-12-25 23:14:41,101 INFO L226 Difference]: Without dead ends: 2230 [2023-12-25 23:14:41,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:14:41,104 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1134 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:41,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 946 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 23:14:41,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2023-12-25 23:14:41,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 1887. [2023-12-25 23:14:41,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1886 states have (on average 1.5530222693531284) internal successors, (2929), 1886 states have internal predecessors, (2929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:41,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2929 transitions. [2023-12-25 23:14:41,145 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2929 transitions. Word has length 382 [2023-12-25 23:14:41,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:41,146 INFO L495 AbstractCegarLoop]: Abstraction has 1887 states and 2929 transitions. [2023-12-25 23:14:41,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:41,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2929 transitions. [2023-12-25 23:14:41,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-12-25 23:14:41,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:41,153 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:41,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-25 23:14:41,153 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:41,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:41,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1725378466, now seen corresponding path program 1 times [2023-12-25 23:14:41,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:41,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662356358] [2023-12-25 23:14:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:41,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-25 23:14:42,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:42,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662356358] [2023-12-25 23:14:42,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662356358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:14:42,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:14:42,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:14:42,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850431744] [2023-12-25 23:14:42,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:14:42,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:14:42,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:42,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:14:42,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:14:42,828 INFO L87 Difference]: Start difference. First operand 1887 states and 2929 transitions. Second operand has 5 states, 5 states have (on average 71.6) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:43,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:43,147 INFO L93 Difference]: Finished difference Result 4032 states and 6303 transitions. [2023-12-25 23:14:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:14:43,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 71.6) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 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 382 [2023-12-25 23:14:43,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:43,151 INFO L225 Difference]: With dead ends: 4032 [2023-12-25 23:14:43,152 INFO L226 Difference]: Without dead ends: 2230 [2023-12-25 23:14:43,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:14:43,155 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1004 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:43,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 944 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 23:14:43,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2023-12-25 23:14:43,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2222. [2023-12-25 23:14:43,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 2221 states have (on average 1.5668617739756867) internal successors, (3480), 2221 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:43,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 3480 transitions. [2023-12-25 23:14:43,204 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 3480 transitions. Word has length 382 [2023-12-25 23:14:43,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:43,205 INFO L495 AbstractCegarLoop]: Abstraction has 2222 states and 3480 transitions. [2023-12-25 23:14:43,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.6) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:43,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 3480 transitions. [2023-12-25 23:14:43,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-12-25 23:14:43,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:43,210 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:43,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-25 23:14:43,210 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:43,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:43,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1294665184, now seen corresponding path program 1 times [2023-12-25 23:14:43,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:43,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543223152] [2023-12-25 23:14:43,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:43,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 187 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:44,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:44,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543223152] [2023-12-25 23:14:44,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543223152] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:14:44,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767542895] [2023-12-25 23:14:44,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:44,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:14:44,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:14:44,788 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) [2023-12-25 23:14:44,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-25 23:14:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:45,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 2538 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-25 23:14:45,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:14:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 39 proven. 177 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 23:14:46,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:14:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 23:14:48,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767542895] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:14:48,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:14:48,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 12] total 28 [2023-12-25 23:14:48,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111311377] [2023-12-25 23:14:48,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:14:48,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-25 23:14:48,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:48,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-25 23:14:48,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2023-12-25 23:14:48,469 INFO L87 Difference]: Start difference. First operand 2222 states and 3480 transitions. Second operand has 29 states, 29 states have (on average 38.06896551724138) internal successors, (1104), 28 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:52,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:52,253 INFO L93 Difference]: Finished difference Result 17506 states and 27708 transitions. [2023-12-25 23:14:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-12-25 23:14:52,254 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 38.06896551724138) internal successors, (1104), 28 states have internal predecessors, (1104), 0 states have call successors, (0), 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 382 [2023-12-25 23:14:52,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:52,278 INFO L225 Difference]: With dead ends: 17506 [2023-12-25 23:14:52,278 INFO L226 Difference]: Without dead ends: 15608 [2023-12-25 23:14:52,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 742 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2903 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1755, Invalid=8345, Unknown=0, NotChecked=0, Total=10100 [2023-12-25 23:14:52,284 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 12080 mSDsluCounter, 8526 mSDsCounter, 0 mSdLazyCounter, 4368 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12080 SdHoareTripleChecker+Valid, 9078 SdHoareTripleChecker+Invalid, 4379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:52,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12080 Valid, 9078 Invalid, 4379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 4368 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-25 23:14:52,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15608 states. [2023-12-25 23:14:52,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15608 to 3435. [2023-12-25 23:14:52,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3435 states, 3434 states have (on average 1.5364006988934187) internal successors, (5276), 3434 states have internal predecessors, (5276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:52,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3435 states to 3435 states and 5276 transitions. [2023-12-25 23:14:52,416 INFO L78 Accepts]: Start accepts. Automaton has 3435 states and 5276 transitions. Word has length 382 [2023-12-25 23:14:52,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:52,417 INFO L495 AbstractCegarLoop]: Abstraction has 3435 states and 5276 transitions. [2023-12-25 23:14:52,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 38.06896551724138) internal successors, (1104), 28 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:52,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states and 5276 transitions. [2023-12-25 23:14:52,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-12-25 23:14:52,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:52,427 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:14:52,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-25 23:14:52,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-25 23:14:52,639 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:52,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:52,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1711317598, now seen corresponding path program 1 times [2023-12-25 23:14:52,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:52,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22163285] [2023-12-25 23:14:52,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:52,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:54,849 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-25 23:14:54,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:54,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22163285] [2023-12-25 23:14:54,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22163285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:14:54,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:14:54,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:14:54,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104082600] [2023-12-25 23:14:54,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:14:54,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:14:54,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:54,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:14:54,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:14:54,851 INFO L87 Difference]: Start difference. First operand 3435 states and 5276 transitions. Second operand has 8 states, 8 states have (on average 45.375) internal successors, (363), 7 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:55,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:55,562 INFO L93 Difference]: Finished difference Result 7247 states and 11101 transitions. [2023-12-25 23:14:55,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 23:14:55,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 45.375) internal successors, (363), 7 states have internal predecessors, (363), 0 states have call successors, (0), 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 382 [2023-12-25 23:14:55,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:55,569 INFO L225 Difference]: With dead ends: 7247 [2023-12-25 23:14:55,569 INFO L226 Difference]: Without dead ends: 4495 [2023-12-25 23:14:55,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2023-12-25 23:14:55,573 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 929 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:55,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 2756 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 23:14:55,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4495 states. [2023-12-25 23:14:55,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4495 to 3499. [2023-12-25 23:14:55,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3499 states, 3498 states have (on average 1.5265866209262435) internal successors, (5340), 3498 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:55,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3499 states to 3499 states and 5340 transitions. [2023-12-25 23:14:55,658 INFO L78 Accepts]: Start accepts. Automaton has 3499 states and 5340 transitions. Word has length 382 [2023-12-25 23:14:55,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:55,658 INFO L495 AbstractCegarLoop]: Abstraction has 3499 states and 5340 transitions. [2023-12-25 23:14:55,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 45.375) internal successors, (363), 7 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:55,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3499 states and 5340 transitions. [2023-12-25 23:14:55,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-12-25 23:14:55,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:55,666 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:14:55,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-25 23:14:55,666 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:55,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:55,666 INFO L85 PathProgramCache]: Analyzing trace with hash -683575964, now seen corresponding path program 1 times [2023-12-25 23:14:55,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:55,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754089406] [2023-12-25 23:14:55,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:55,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:58,395 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-25 23:14:58,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:58,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754089406] [2023-12-25 23:14:58,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754089406] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:14:58,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213307260] [2023-12-25 23:14:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:58,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:14:58,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:14:58,397 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) [2023-12-25 23:14:58,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-25 23:14:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:58,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 2542 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-25 23:14:59,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:14:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 193 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:59,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:15:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 186 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:15:01,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213307260] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:15:01,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:15:01,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 20, 19] total 42 [2023-12-25 23:15:01,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533022068] [2023-12-25 23:15:01,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:15:01,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-25 23:15:01,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:15:01,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-25 23:15:01,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2023-12-25 23:15:01,035 INFO L87 Difference]: Start difference. First operand 3499 states and 5340 transitions. Second operand has 42 states, 42 states have (on average 19.571428571428573) internal successors, (822), 42 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:16:00,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:16:00,231 INFO L93 Difference]: Finished difference Result 136685 states and 211908 transitions. [2023-12-25 23:16:00,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1002 states. [2023-12-25 23:16:00,231 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 19.571428571428573) internal successors, (822), 42 states have internal predecessors, (822), 0 states have call successors, (0), 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 382 [2023-12-25 23:16:00,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:16:00,392 INFO L225 Difference]: With dead ends: 136685 [2023-12-25 23:16:00,392 INFO L226 Difference]: Without dead ends: 133420 [2023-12-25 23:16:00,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1940 GetRequests, 900 SyntacticMatches, 0 SemanticMatches, 1040 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506499 ImplicationChecksByTransitivity, 44.4s TimeCoverageRelationStatistics Valid=41842, Invalid=1042880, Unknown=0, NotChecked=0, Total=1084722 [2023-12-25 23:16:00,544 INFO L413 NwaCegarLoop]: 3176 mSDtfsCounter, 77111 mSDsluCounter, 85009 mSDsCounter, 0 mSdLazyCounter, 12565 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77111 SdHoareTripleChecker+Valid, 88185 SdHoareTripleChecker+Invalid, 12639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 12565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-25 23:16:00,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77111 Valid, 88185 Invalid, 12639 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [74 Valid, 12565 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-12-25 23:16:00,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133420 states. [2023-12-25 23:16:01,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133420 to 5686. [2023-12-25 23:16:01,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5686 states, 5685 states have (on average 1.5102902374670184) internal successors, (8586), 5685 states have internal predecessors, (8586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:16:01,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5686 states to 5686 states and 8586 transitions. [2023-12-25 23:16:01,268 INFO L78 Accepts]: Start accepts. Automaton has 5686 states and 8586 transitions. Word has length 382 [2023-12-25 23:16:01,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:16:01,268 INFO L495 AbstractCegarLoop]: Abstraction has 5686 states and 8586 transitions. [2023-12-25 23:16:01,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 19.571428571428573) internal successors, (822), 42 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:16:01,269 INFO L276 IsEmpty]: Start isEmpty. Operand 5686 states and 8586 transitions. [2023-12-25 23:16:01,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-12-25 23:16:01,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:16:01,279 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:16:01,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-25 23:16:01,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:16:01,492 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:16:01,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:16:01,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1039680140, now seen corresponding path program 1 times [2023-12-25 23:16:01,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:16:01,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904702127] [2023-12-25 23:16:01,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:16:01,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:16:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:16:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-25 23:16:03,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:16:03,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904702127] [2023-12-25 23:16:03,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904702127] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:16:03,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433675136] [2023-12-25 23:16:03,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:16:03,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:16:03,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:16:03,519 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) [2023-12-25 23:16:03,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-25 23:16:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:16:04,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 2543 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 23:16:04,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:16:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 158 proven. 11 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-25 23:16:04,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:16:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-25 23:16:04,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433675136] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 23:16:04,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-25 23:16:04,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 9] total 18 [2023-12-25 23:16:04,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169937771] [2023-12-25 23:16:04,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:16:04,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:16:04,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:16:04,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:16:04,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-25 23:16:04,180 INFO L87 Difference]: Start difference. First operand 5686 states and 8586 transitions. Second operand has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:16:04,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:16:04,462 INFO L93 Difference]: Finished difference Result 16785 states and 25328 transitions. [2023-12-25 23:16:04,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 23:16:04,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 382 [2023-12-25 23:16:04,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:16:04,478 INFO L225 Difference]: With dead ends: 16785 [2023-12-25 23:16:04,478 INFO L226 Difference]: Without dead ends: 11264 [2023-12-25 23:16:04,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 752 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-12-25 23:16:04,487 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 397 mSDsluCounter, 2100 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:16:04,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 2657 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:16:04,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11264 states. [2023-12-25 23:16:04,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11264 to 5741. [2023-12-25 23:16:04,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5741 states, 5740 states have (on average 1.5073170731707317) internal successors, (8652), 5740 states have internal predecessors, (8652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:16:04,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5741 states to 5741 states and 8652 transitions. [2023-12-25 23:16:04,664 INFO L78 Accepts]: Start accepts. Automaton has 5741 states and 8652 transitions. Word has length 382 [2023-12-25 23:16:04,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:16:04,665 INFO L495 AbstractCegarLoop]: Abstraction has 5741 states and 8652 transitions. [2023-12-25 23:16:04,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:16:04,665 INFO L276 IsEmpty]: Start isEmpty. Operand 5741 states and 8652 transitions. [2023-12-25 23:16:04,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2023-12-25 23:16:04,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:16:04,675 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:16:04,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-25 23:16:04,886 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,SelfDestructingSolverStorable20 [2023-12-25 23:16:04,886 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:16:04,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:16:04,887 INFO L85 PathProgramCache]: Analyzing trace with hash -339518066, now seen corresponding path program 1 times [2023-12-25 23:16:04,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:16:04,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406867867] [2023-12-25 23:16:04,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:16:04,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:16:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:16:06,238 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-25 23:16:06,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:16:06,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406867867] [2023-12-25 23:16:06,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406867867] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:16:06,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613806181] [2023-12-25 23:16:06,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:16:06,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:16:06,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:16:06,240 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) [2023-12-25 23:16:06,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-25 23:16:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:16:06,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 2546 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-25 23:16:06,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:16:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 195 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:16:07,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:16:08,475 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 190 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:16:08,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613806181] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:16:08,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:16:08,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 20, 19] total 40 [2023-12-25 23:16:08,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139983013] [2023-12-25 23:16:08,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:16:08,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-25 23:16:08,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:16:08,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-25 23:16:08,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1427, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 23:16:08,478 INFO L87 Difference]: Start difference. First operand 5741 states and 8652 transitions. Second operand has 40 states, 40 states have (on average 20.3) internal successors, (812), 40 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:20:31,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:31,139 INFO L93 Difference]: Finished difference Result 342312 states and 534947 transitions. [2023-12-25 23:20:31,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2617 states. [2023-12-25 23:20:31,139 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 20.3) internal successors, (812), 40 states have internal predecessors, (812), 0 states have call successors, (0), 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 383 [2023-12-25 23:20:31,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:31,475 INFO L225 Difference]: With dead ends: 342312 [2023-12-25 23:20:31,475 INFO L226 Difference]: Without dead ends: 336797 [2023-12-25 23:20:32,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4026 GetRequests, 1373 SyntacticMatches, 0 SemanticMatches, 2653 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3588790 ImplicationChecksByTransitivity, 218.7s TimeCoverageRelationStatistics Valid=386745, Invalid=6659625, Unknown=0, NotChecked=0, Total=7046370 [2023-12-25 23:20:32,604 INFO L413 NwaCegarLoop]: 2100 mSDtfsCounter, 113693 mSDsluCounter, 77604 mSDsCounter, 0 mSdLazyCounter, 11529 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113693 SdHoareTripleChecker+Valid, 79704 SdHoareTripleChecker+Invalid, 11658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 11529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:32,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113693 Valid, 79704 Invalid, 11658 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [129 Valid, 11529 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2023-12-25 23:20:32,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336797 states. [2023-12-25 23:20:34,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336797 to 8297. [2023-12-25 23:20:34,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8297 states, 8296 states have (on average 1.5150675024108005) internal successors, (12569), 8296 states have internal predecessors, (12569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:20:34,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8297 states to 8297 states and 12569 transitions. [2023-12-25 23:20:34,407 INFO L78 Accepts]: Start accepts. Automaton has 8297 states and 12569 transitions. Word has length 383 [2023-12-25 23:20:34,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:34,408 INFO L495 AbstractCegarLoop]: Abstraction has 8297 states and 12569 transitions. [2023-12-25 23:20:34,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 20.3) internal successors, (812), 40 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:20:34,408 INFO L276 IsEmpty]: Start isEmpty. Operand 8297 states and 12569 transitions. [2023-12-25 23:20:34,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2023-12-25 23:20:34,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:34,423 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:20:34,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-25 23:20:34,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:20:34,636 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:34,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:34,636 INFO L85 PathProgramCache]: Analyzing trace with hash -327395934, now seen corresponding path program 1 times [2023-12-25 23:20:34,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:34,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389720799] [2023-12-25 23:20:34,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:34,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-25 23:20:36,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:36,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389720799] [2023-12-25 23:20:36,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389720799] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:20:36,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079939408] [2023-12-25 23:20:36,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:36,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:20:36,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:20:36,931 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) [2023-12-25 23:20:36,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-25 23:20:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:37,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 2545 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-25 23:20:37,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:20:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 135 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:38,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:20:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:39,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079939408] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:20:39,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:20:39,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 25, 15] total 44 [2023-12-25 23:20:39,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24606325] [2023-12-25 23:20:39,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:20:39,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-25 23:20:39,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:39,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-25 23:20:39,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1728, Unknown=0, NotChecked=0, Total=1892 [2023-12-25 23:20:39,048 INFO L87 Difference]: Start difference. First operand 8297 states and 12569 transitions. Second operand has 44 states, 44 states have (on average 19.40909090909091) internal successors, (854), 44 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:11,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:22:11,253 INFO L93 Difference]: Finished difference Result 234013 states and 363909 transitions. [2023-12-25 23:22:11,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1392 states. [2023-12-25 23:22:11,254 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 19.40909090909091) internal successors, (854), 44 states have internal predecessors, (854), 0 states have call successors, (0), 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 383 [2023-12-25 23:22:11,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:22:11,480 INFO L225 Difference]: With dead ends: 234013 [2023-12-25 23:22:11,481 INFO L226 Difference]: Without dead ends: 225785 [2023-12-25 23:22:11,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2494 GetRequests, 1062 SyntacticMatches, 0 SemanticMatches, 1432 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999151 ImplicationChecksByTransitivity, 75.0s TimeCoverageRelationStatistics Valid=91295, Invalid=1963627, Unknown=0, NotChecked=0, Total=2054922 [2023-12-25 23:22:11,624 INFO L413 NwaCegarLoop]: 1956 mSDtfsCounter, 151881 mSDsluCounter, 62381 mSDsCounter, 0 mSdLazyCounter, 9457 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151881 SdHoareTripleChecker+Valid, 64337 SdHoareTripleChecker+Invalid, 9598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 9457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-25 23:22:11,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151881 Valid, 64337 Invalid, 9598 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [141 Valid, 9457 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-25 23:22:11,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225785 states. [2023-12-25 23:22:12,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225785 to 12189. [2023-12-25 23:22:12,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12189 states, 12188 states have (on average 1.5080406957663275) internal successors, (18380), 12188 states have internal predecessors, (18380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:13,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12189 states to 12189 states and 18380 transitions. [2023-12-25 23:22:13,004 INFO L78 Accepts]: Start accepts. Automaton has 12189 states and 18380 transitions. Word has length 383 [2023-12-25 23:22:13,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:22:13,004 INFO L495 AbstractCegarLoop]: Abstraction has 12189 states and 18380 transitions. [2023-12-25 23:22:13,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 19.40909090909091) internal successors, (854), 44 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:13,005 INFO L276 IsEmpty]: Start isEmpty. Operand 12189 states and 18380 transitions. [2023-12-25 23:22:13,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2023-12-25 23:22:13,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:22:13,031 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:22:13,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-25 23:22:13,243 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,SelfDestructingSolverStorable22 [2023-12-25 23:22:13,244 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:22:13,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:22:13,244 INFO L85 PathProgramCache]: Analyzing trace with hash 818630988, now seen corresponding path program 1 times [2023-12-25 23:22:13,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:22:13,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095878511] [2023-12-25 23:22:13,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:22:13,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:22:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:22:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-12-25 23:22:14,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:22:14,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095878511] [2023-12-25 23:22:14,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095878511] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:22:14,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814168088] [2023-12-25 23:22:14,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:22:14,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:22:14,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:22:14,572 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:22:14,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-25 23:22:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:22:15,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 2545 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-25 23:22:15,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:22:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-12-25 23:22:15,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:22:16,052 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-12-25 23:22:16,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814168088] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 23:22:16,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-25 23:22:16,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5, 11] total 24 [2023-12-25 23:22:16,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63490761] [2023-12-25 23:22:16,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:22:16,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 23:22:16,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:22:16,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 23:22:16,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2023-12-25 23:22:16,054 INFO L87 Difference]: Start difference. First operand 12189 states and 18380 transitions. Second operand has 10 states, 10 states have (on average 21.8) internal successors, (218), 10 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:18,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:22:18,619 INFO L93 Difference]: Finished difference Result 75704 states and 113637 transitions. [2023-12-25 23:22:18,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-25 23:22:18,619 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.8) internal successors, (218), 10 states have internal predecessors, (218), 0 states have call successors, (0), 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 383 [2023-12-25 23:22:18,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:22:18,683 INFO L225 Difference]: With dead ends: 75704 [2023-12-25 23:22:18,683 INFO L226 Difference]: Without dead ends: 57970 [2023-12-25 23:22:18,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=233, Invalid=1249, Unknown=0, NotChecked=0, Total=1482 [2023-12-25 23:22:18,704 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 3236 mSDsluCounter, 4465 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3236 SdHoareTripleChecker+Valid, 5325 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-25 23:22:18,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3236 Valid, 5325 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-25 23:22:18,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57970 states. [2023-12-25 23:22:19,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57970 to 24416. [2023-12-25 23:22:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24416 states, 24415 states have (on average 1.5127585500716771) internal successors, (36934), 24415 states have internal predecessors, (36934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24416 states to 24416 states and 36934 transitions. [2023-12-25 23:22:19,418 INFO L78 Accepts]: Start accepts. Automaton has 24416 states and 36934 transitions. Word has length 383 [2023-12-25 23:22:19,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:22:19,419 INFO L495 AbstractCegarLoop]: Abstraction has 24416 states and 36934 transitions. [2023-12-25 23:22:19,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.8) internal successors, (218), 10 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:19,419 INFO L276 IsEmpty]: Start isEmpty. Operand 24416 states and 36934 transitions. [2023-12-25 23:22:19,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2023-12-25 23:22:19,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:22:19,450 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:22:19,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-25 23:22:19,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-25 23:22:19,662 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:22:19,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:22:19,663 INFO L85 PathProgramCache]: Analyzing trace with hash -994247962, now seen corresponding path program 1 times [2023-12-25 23:22:19,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:22:19,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766788044] [2023-12-25 23:22:19,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:22:19,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:22:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:22:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-25 23:22:21,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:22:21,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766788044] [2023-12-25 23:22:21,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766788044] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:22:21,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807547901] [2023-12-25 23:22:21,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:22:21,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:22:21,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:22:21,192 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:22:21,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-25 23:22:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:22:21,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 2545 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-25 23:22:21,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:22:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 122 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-25 23:22:22,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:22:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-25 23:22:24,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807547901] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:22:24,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:22:24,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 12] total 27 [2023-12-25 23:22:24,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343137655] [2023-12-25 23:22:24,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:22:24,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-25 23:22:24,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:22:24,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-25 23:22:24,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2023-12-25 23:22:24,881 INFO L87 Difference]: Start difference. First operand 24416 states and 36934 transitions. Second operand has 28 states, 28 states have (on average 27.964285714285715) internal successors, (783), 27 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:35,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:22:35,201 INFO L93 Difference]: Finished difference Result 207644 states and 315646 transitions. [2023-12-25 23:22:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-25 23:22:35,201 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 27.964285714285715) internal successors, (783), 27 states have internal predecessors, (783), 0 states have call successors, (0), 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 383 [2023-12-25 23:22:35,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:22:35,342 INFO L225 Difference]: With dead ends: 207644 [2023-12-25 23:22:35,342 INFO L226 Difference]: Without dead ends: 183293 [2023-12-25 23:22:35,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4418 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2133, Invalid=13119, Unknown=0, NotChecked=0, Total=15252 [2023-12-25 23:22:35,373 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 6203 mSDsluCounter, 16154 mSDsCounter, 0 mSdLazyCounter, 11286 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6203 SdHoareTripleChecker+Valid, 17029 SdHoareTripleChecker+Invalid, 11293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-25 23:22:35,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6203 Valid, 17029 Invalid, 11293 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 11286 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-25 23:22:35,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183293 states. [2023-12-25 23:22:36,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183293 to 26306. [2023-12-25 23:22:36,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26306 states, 26305 states have (on average 1.5102071849458278) internal successors, (39726), 26305 states have internal predecessors, (39726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26306 states to 26306 states and 39726 transitions. [2023-12-25 23:22:36,614 INFO L78 Accepts]: Start accepts. Automaton has 26306 states and 39726 transitions. Word has length 383 [2023-12-25 23:22:36,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:22:36,615 INFO L495 AbstractCegarLoop]: Abstraction has 26306 states and 39726 transitions. [2023-12-25 23:22:36,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 27.964285714285715) internal successors, (783), 27 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:36,615 INFO L276 IsEmpty]: Start isEmpty. Operand 26306 states and 39726 transitions. [2023-12-25 23:22:36,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2023-12-25 23:22:36,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:22:36,650 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:22:36,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-25 23:22:36,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-25 23:22:36,865 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:22:36,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:22:36,866 INFO L85 PathProgramCache]: Analyzing trace with hash 163926394, now seen corresponding path program 1 times [2023-12-25 23:22:36,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:22:36,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832196372] [2023-12-25 23:22:36,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:22:36,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:22:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:22:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-25 23:22:38,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:22:38,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832196372] [2023-12-25 23:22:38,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832196372] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:22:38,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137272412] [2023-12-25 23:22:38,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:22:38,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:22:38,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:22:38,541 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:22:38,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-25 23:22:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:22:39,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 2546 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 23:22:39,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:22:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 98 proven. 11 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-25 23:22:39,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:22:39,174 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-25 23:22:39,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137272412] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 23:22:39,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-25 23:22:39,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 9] total 18 [2023-12-25 23:22:39,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389847966] [2023-12-25 23:22:39,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:22:39,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:22:39,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:22:39,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:22:39,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-25 23:22:39,177 INFO L87 Difference]: Start difference. First operand 26306 states and 39726 transitions. Second operand has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:40,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:22:40,382 INFO L93 Difference]: Finished difference Result 75886 states and 114162 transitions. [2023-12-25 23:22:40,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 23:22:40,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 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 383 [2023-12-25 23:22:40,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:22:40,425 INFO L225 Difference]: With dead ends: 75886 [2023-12-25 23:22:40,426 INFO L226 Difference]: Without dead ends: 51288 [2023-12-25 23:22:40,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 754 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-12-25 23:22:40,443 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 397 mSDsluCounter, 2550 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 3257 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:22:40,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 3257 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:22:40,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51288 states. [2023-12-25 23:22:41,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51288 to 26676. [2023-12-25 23:22:41,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26676 states, 26675 states have (on average 1.505904404873477) internal successors, (40170), 26675 states have internal predecessors, (40170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:41,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26676 states to 26676 states and 40170 transitions. [2023-12-25 23:22:41,212 INFO L78 Accepts]: Start accepts. Automaton has 26676 states and 40170 transitions. Word has length 383 [2023-12-25 23:22:41,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:22:41,212 INFO L495 AbstractCegarLoop]: Abstraction has 26676 states and 40170 transitions. [2023-12-25 23:22:41,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:41,212 INFO L276 IsEmpty]: Start isEmpty. Operand 26676 states and 40170 transitions. [2023-12-25 23:22:41,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2023-12-25 23:22:41,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:22:41,244 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:22:41,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-25 23:22:41,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-25 23:22:41,454 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:22:41,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:22:41,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1924997976, now seen corresponding path program 1 times [2023-12-25 23:22:41,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:22:41,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703889865] [2023-12-25 23:22:41,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:22:41,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:22:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:22:42,885 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-25 23:22:42,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:22:42,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703889865] [2023-12-25 23:22:42,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703889865] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:22:42,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466561097] [2023-12-25 23:22:42,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:22:42,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:22:42,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:22:42,887 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:22:42,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-25 23:22:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:22:43,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 2546 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 23:22:43,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:22:43,464 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 162 proven. 11 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-25 23:22:43,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:22:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-25 23:22:43,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466561097] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 23:22:43,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-25 23:22:43,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 9] total 18 [2023-12-25 23:22:43,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472696345] [2023-12-25 23:22:43,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:22:43,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:22:43,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:22:43,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:22:43,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-25 23:22:43,519 INFO L87 Difference]: Start difference. First operand 26676 states and 40170 transitions. Second operand has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:44,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:22:44,605 INFO L93 Difference]: Finished difference Result 79904 states and 120148 transitions. [2023-12-25 23:22:44,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 23:22:44,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 0 states have call successors, (0), 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 383 [2023-12-25 23:22:44,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:22:44,651 INFO L225 Difference]: With dead ends: 79904 [2023-12-25 23:22:44,651 INFO L226 Difference]: Without dead ends: 53554 [2023-12-25 23:22:44,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 754 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-12-25 23:22:44,665 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 397 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 2617 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:22:44,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 2617 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:22:44,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53554 states. [2023-12-25 23:22:45,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53554 to 27196. [2023-12-25 23:22:45,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27196 states, 27195 states have (on average 1.5000551571980143) internal successors, (40794), 27195 states have internal predecessors, (40794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:45,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27196 states to 27196 states and 40794 transitions. [2023-12-25 23:22:45,475 INFO L78 Accepts]: Start accepts. Automaton has 27196 states and 40794 transitions. Word has length 383 [2023-12-25 23:22:45,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:22:45,475 INFO L495 AbstractCegarLoop]: Abstraction has 27196 states and 40794 transitions. [2023-12-25 23:22:45,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:45,475 INFO L276 IsEmpty]: Start isEmpty. Operand 27196 states and 40794 transitions. [2023-12-25 23:22:45,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2023-12-25 23:22:45,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:22:45,515 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:22:45,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-25 23:22:45,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:22:45,716 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:22:45,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:22:45,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1067860116, now seen corresponding path program 1 times [2023-12-25 23:22:45,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:22:45,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298749956] [2023-12-25 23:22:45,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:22:45,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:22:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:22:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-25 23:22:46,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:22:46,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298749956] [2023-12-25 23:22:46,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298749956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:22:46,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:22:46,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:22:46,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314804776] [2023-12-25 23:22:46,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:22:46,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:22:46,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:22:46,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:22:46,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:22:46,321 INFO L87 Difference]: Start difference. First operand 27196 states and 40794 transitions. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:47,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:22:47,159 INFO L93 Difference]: Finished difference Result 53672 states and 80437 transitions. [2023-12-25 23:22:47,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:22:47,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 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 383 [2023-12-25 23:22:47,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:22:47,181 INFO L225 Difference]: With dead ends: 53672 [2023-12-25 23:22:47,182 INFO L226 Difference]: Without dead ends: 27346 [2023-12-25 23:22:47,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:22:47,191 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 283 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:22:47,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 968 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:22:47,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27346 states. [2023-12-25 23:22:47,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27346 to 27296. [2023-12-25 23:22:47,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27296 states, 27295 states have (on average 1.4982231177871406) internal successors, (40894), 27295 states have internal predecessors, (40894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:47,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27296 states to 27296 states and 40894 transitions. [2023-12-25 23:22:47,993 INFO L78 Accepts]: Start accepts. Automaton has 27296 states and 40894 transitions. Word has length 383 [2023-12-25 23:22:47,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:22:47,993 INFO L495 AbstractCegarLoop]: Abstraction has 27296 states and 40894 transitions. [2023-12-25 23:22:47,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:47,993 INFO L276 IsEmpty]: Start isEmpty. Operand 27296 states and 40894 transitions. [2023-12-25 23:22:48,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2023-12-25 23:22:48,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:22:48,033 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:22:48,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-25 23:22:48,033 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:22:48,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:22:48,033 INFO L85 PathProgramCache]: Analyzing trace with hash 400501562, now seen corresponding path program 1 times [2023-12-25 23:22:48,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:22:48,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773260465] [2023-12-25 23:22:48,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:22:48,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:22:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:22:48,640 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-25 23:22:48,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:22:48,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773260465] [2023-12-25 23:22:48,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773260465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:22:48,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:22:48,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:22:48,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264011999] [2023-12-25 23:22:48,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:22:48,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:22:48,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:22:48,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:22:48,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:22:48,642 INFO L87 Difference]: Start difference. First operand 27296 states and 40894 transitions. Second operand has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:49,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:22:49,441 INFO L93 Difference]: Finished difference Result 54158 states and 81075 transitions. [2023-12-25 23:22:49,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:22:49,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 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 384 [2023-12-25 23:22:49,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:22:49,461 INFO L225 Difference]: With dead ends: 54158 [2023-12-25 23:22:49,461 INFO L226 Difference]: Without dead ends: 27506 [2023-12-25 23:22:49,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:22:49,469 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 283 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:22:49,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 968 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:22:49,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27506 states. [2023-12-25 23:22:50,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27506 to 27436. [2023-12-25 23:22:50,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27436 states, 27435 states have (on average 1.495680699835976) internal successors, (41034), 27435 states have internal predecessors, (41034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:50,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27436 states to 27436 states and 41034 transitions. [2023-12-25 23:22:50,083 INFO L78 Accepts]: Start accepts. Automaton has 27436 states and 41034 transitions. Word has length 384 [2023-12-25 23:22:50,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:22:50,083 INFO L495 AbstractCegarLoop]: Abstraction has 27436 states and 41034 transitions. [2023-12-25 23:22:50,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:50,084 INFO L276 IsEmpty]: Start isEmpty. Operand 27436 states and 41034 transitions. [2023-12-25 23:22:50,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2023-12-25 23:22:50,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:22:50,111 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:22:50,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-25 23:22:50,111 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:22:50,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:22:50,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1971237946, now seen corresponding path program 1 times [2023-12-25 23:22:50,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:22:50,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149810194] [2023-12-25 23:22:50,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:22:50,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:22:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:22:51,519 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-25 23:22:51,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:22:51,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149810194] [2023-12-25 23:22:51,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149810194] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:22:51,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298519937] [2023-12-25 23:22:51,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:22:51,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:22:51,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:22:51,521 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:22:51,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-25 23:22:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:22:51,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 2549 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 23:22:51,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:22:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 128 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-12-25 23:22:52,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:22:52,097 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-25 23:22:52,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298519937] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 23:22:52,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-25 23:22:52,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 9] total 18 [2023-12-25 23:22:52,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696425654] [2023-12-25 23:22:52,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:22:52,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:22:52,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:22:52,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:22:52,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-25 23:22:52,099 INFO L87 Difference]: Start difference. First operand 27436 states and 41034 transitions. Second operand has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:53,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:22:53,203 INFO L93 Difference]: Finished difference Result 80200 states and 119744 transitions. [2023-12-25 23:22:53,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 23:22:53,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 0 states have call successors, (0), 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 384 [2023-12-25 23:22:53,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:22:53,248 INFO L225 Difference]: With dead ends: 80200 [2023-12-25 23:22:53,249 INFO L226 Difference]: Without dead ends: 53914 [2023-12-25 23:22:53,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 756 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-12-25 23:22:53,260 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 397 mSDsluCounter, 2325 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:22:53,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 2957 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:22:53,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53914 states. [2023-12-25 23:22:53,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53914 to 27656. [2023-12-25 23:22:54,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27656 states, 27655 states have (on average 1.4933285120231423) internal successors, (41298), 27655 states have internal predecessors, (41298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:54,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27656 states to 27656 states and 41298 transitions. [2023-12-25 23:22:54,036 INFO L78 Accepts]: Start accepts. Automaton has 27656 states and 41298 transitions. Word has length 384 [2023-12-25 23:22:54,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:22:54,036 INFO L495 AbstractCegarLoop]: Abstraction has 27656 states and 41298 transitions. [2023-12-25 23:22:54,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:54,036 INFO L276 IsEmpty]: Start isEmpty. Operand 27656 states and 41298 transitions. [2023-12-25 23:22:54,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2023-12-25 23:22:54,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:22:54,062 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:22:54,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-25 23:22:54,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:22:54,263 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:22:54,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:22:54,263 INFO L85 PathProgramCache]: Analyzing trace with hash 149019046, now seen corresponding path program 1 times [2023-12-25 23:22:54,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:22:54,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842125293] [2023-12-25 23:22:54,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:22:54,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:22:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:22:54,832 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-25 23:22:54,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:22:54,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842125293] [2023-12-25 23:22:54,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842125293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:22:54,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:22:54,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:22:54,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658811415] [2023-12-25 23:22:54,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:22:54,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:22:54,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:22:54,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:22:54,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:22:54,835 INFO L87 Difference]: Start difference. First operand 27656 states and 41298 transitions. Second operand has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:55,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:22:55,641 INFO L93 Difference]: Finished difference Result 53996 states and 80493 transitions. [2023-12-25 23:22:55,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:22:55,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 0 states have call successors, (0), 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 384 [2023-12-25 23:22:55,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:22:55,661 INFO L225 Difference]: With dead ends: 53996 [2023-12-25 23:22:55,662 INFO L226 Difference]: Without dead ends: 27878 [2023-12-25 23:22:55,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:22:55,671 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 283 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:22:55,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 968 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:22:55,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27878 states. [2023-12-25 23:22:56,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27878 to 27804. [2023-12-25 23:22:56,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27804 states, 27803 states have (on average 1.4907024421824984) internal successors, (41446), 27803 states have internal predecessors, (41446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:56,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27804 states to 27804 states and 41446 transitions. [2023-12-25 23:22:56,300 INFO L78 Accepts]: Start accepts. Automaton has 27804 states and 41446 transitions. Word has length 384 [2023-12-25 23:22:56,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:22:56,300 INFO L495 AbstractCegarLoop]: Abstraction has 27804 states and 41446 transitions. [2023-12-25 23:22:56,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:22:56,300 INFO L276 IsEmpty]: Start isEmpty. Operand 27804 states and 41446 transitions. [2023-12-25 23:22:56,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2023-12-25 23:22:56,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:22:56,326 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:22:56,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-25 23:22:56,326 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:22:56,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:22:56,327 INFO L85 PathProgramCache]: Analyzing trace with hash -833533308, now seen corresponding path program 1 times [2023-12-25 23:22:56,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:22:56,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371184731] [2023-12-25 23:22:56,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:22:56,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:22:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:22:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 54 proven. 10 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-12-25 23:22:59,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:22:59,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371184731] [2023-12-25 23:22:59,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371184731] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:22:59,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209829184] [2023-12-25 23:22:59,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:22:59,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:22:59,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:22:59,897 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:22:59,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-25 23:23:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:23:00,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 2549 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-25 23:23:00,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:23:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 55 proven. 32 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-12-25 23:23:01,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:23:02,567 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-25 23:23:02,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209829184] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:23:02,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:23:02,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 12] total 35 [2023-12-25 23:23:02,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764183719] [2023-12-25 23:23:02,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:23:02,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-25 23:23:02,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:23:02,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-25 23:23:02,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1079, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 23:23:02,570 INFO L87 Difference]: Start difference. First operand 27804 states and 41446 transitions. Second operand has 36 states, 36 states have (on average 19.333333333333332) internal successors, (696), 35 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:23:12,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:23:12,781 INFO L93 Difference]: Finished difference Result 161423 states and 240026 transitions. [2023-12-25 23:23:12,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2023-12-25 23:23:12,781 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 19.333333333333332) internal successors, (696), 35 states have internal predecessors, (696), 0 states have call successors, (0), 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 384 [2023-12-25 23:23:12,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:23:12,888 INFO L225 Difference]: With dead ends: 161423 [2023-12-25 23:23:12,889 INFO L226 Difference]: Without dead ends: 135110 [2023-12-25 23:23:12,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 744 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10142 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4480, Invalid=25970, Unknown=0, NotChecked=0, Total=30450 [2023-12-25 23:23:12,902 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 21724 mSDsluCounter, 12531 mSDsCounter, 0 mSdLazyCounter, 6352 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21724 SdHoareTripleChecker+Valid, 13076 SdHoareTripleChecker+Invalid, 6389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 6352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-25 23:23:12,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21724 Valid, 13076 Invalid, 6389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 6352 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-25 23:23:12,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135110 states. [2023-12-25 23:23:13,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135110 to 15913. [2023-12-25 23:23:13,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15913 states, 15912 states have (on average 1.4583333333333333) internal successors, (23205), 15912 states have internal predecessors, (23205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:23:13,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15913 states to 15913 states and 23205 transitions. [2023-12-25 23:23:13,791 INFO L78 Accepts]: Start accepts. Automaton has 15913 states and 23205 transitions. Word has length 384 [2023-12-25 23:23:13,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:23:13,791 INFO L495 AbstractCegarLoop]: Abstraction has 15913 states and 23205 transitions. [2023-12-25 23:23:13,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 19.333333333333332) internal successors, (696), 35 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:23:13,791 INFO L276 IsEmpty]: Start isEmpty. Operand 15913 states and 23205 transitions. [2023-12-25 23:23:13,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2023-12-25 23:23:13,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:23:13,804 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:23:13,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-25 23:23:14,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:23:14,005 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:23:14,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:23:14,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1399344956, now seen corresponding path program 1 times [2023-12-25 23:23:14,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:23:14,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894525118] [2023-12-25 23:23:14,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:23:14,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:23:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:23:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-12-25 23:23:15,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:23:15,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894525118] [2023-12-25 23:23:15,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894525118] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:23:15,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372432619] [2023-12-25 23:23:15,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:23:15,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:23:15,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:23:15,044 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:23:15,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-25 23:23:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:23:15,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 2549 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-25 23:23:15,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:23:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 137 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:23:16,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:23:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:23:16,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372432619] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 23:23:16,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-25 23:23:16,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [4, 25] total 41 [2023-12-25 23:23:16,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126694230] [2023-12-25 23:23:16,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:23:16,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-25 23:23:16,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:23:16,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-25 23:23:16,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1484, Unknown=0, NotChecked=0, Total=1640 [2023-12-25 23:23:16,993 INFO L87 Difference]: Start difference. First operand 15913 states and 23205 transitions. Second operand has 15 states, 15 states have (on average 25.6) internal successors, (384), 15 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:23:22,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:23:22,536 INFO L93 Difference]: Finished difference Result 106515 states and 160875 transitions. [2023-12-25 23:23:22,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-25 23:23:22,536 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 25.6) internal successors, (384), 15 states have internal predecessors, (384), 0 states have call successors, (0), 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 384 [2023-12-25 23:23:22,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:23:22,605 INFO L225 Difference]: With dead ends: 106515 [2023-12-25 23:23:22,605 INFO L226 Difference]: Without dead ends: 91570 [2023-12-25 23:23:22,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 859 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2540 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1038, Invalid=8862, Unknown=0, NotChecked=0, Total=9900 [2023-12-25 23:23:22,618 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 10266 mSDsluCounter, 8469 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10266 SdHoareTripleChecker+Valid, 9162 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 23:23:22,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10266 Valid, 9162 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 23:23:22,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91570 states. [2023-12-25 23:23:23,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91570 to 18631. [2023-12-25 23:23:23,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18631 states, 18630 states have (on average 1.473322597960279) internal successors, (27448), 18630 states have internal predecessors, (27448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:23:23,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18631 states to 18631 states and 27448 transitions. [2023-12-25 23:23:23,537 INFO L78 Accepts]: Start accepts. Automaton has 18631 states and 27448 transitions. Word has length 384 [2023-12-25 23:23:23,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:23:23,537 INFO L495 AbstractCegarLoop]: Abstraction has 18631 states and 27448 transitions. [2023-12-25 23:23:23,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 25.6) internal successors, (384), 15 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:23:23,538 INFO L276 IsEmpty]: Start isEmpty. Operand 18631 states and 27448 transitions. [2023-12-25 23:23:23,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2023-12-25 23:23:23,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:23:23,553 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:23:23,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-25 23:23:23,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:23:23,754 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:23:23,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:23:23,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1424605674, now seen corresponding path program 1 times [2023-12-25 23:23:23,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:23:23,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593267737] [2023-12-25 23:23:23,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:23:23,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:23:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:23:25,328 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-25 23:23:25,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:23:25,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593267737] [2023-12-25 23:23:25,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593267737] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:23:25,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961041819] [2023-12-25 23:23:25,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:23:25,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:23:25,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:23:25,330 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:23:25,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-25 23:23:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:23:25,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 2549 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 23:23:25,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:23:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 102 proven. 11 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-25 23:23:25,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:23:25,966 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-25 23:23:25,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961041819] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 23:23:25,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-25 23:23:25,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 9] total 18 [2023-12-25 23:23:25,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001399979] [2023-12-25 23:23:25,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:23:25,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:23:25,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:23:25,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:23:25,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-25 23:23:25,969 INFO L87 Difference]: Start difference. First operand 18631 states and 27448 transitions. Second operand has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:23:27,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:23:27,194 INFO L93 Difference]: Finished difference Result 53557 states and 78534 transitions. [2023-12-25 23:23:27,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 23:23:27,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 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 384 [2023-12-25 23:23:27,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:23:27,221 INFO L225 Difference]: With dead ends: 53557 [2023-12-25 23:23:27,221 INFO L226 Difference]: Without dead ends: 36286 [2023-12-25 23:23:27,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 756 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-12-25 23:23:27,230 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 397 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 3217 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:23:27,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 3217 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:23:27,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36286 states. [2023-12-25 23:23:27,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36286 to 19001. [2023-12-25 23:23:27,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19001 states, 19000 states have (on average 1.468) internal successors, (27892), 19000 states have internal predecessors, (27892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:23:27,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19001 states to 19001 states and 27892 transitions. [2023-12-25 23:23:27,957 INFO L78 Accepts]: Start accepts. Automaton has 19001 states and 27892 transitions. Word has length 384 [2023-12-25 23:23:27,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:23:27,957 INFO L495 AbstractCegarLoop]: Abstraction has 19001 states and 27892 transitions. [2023-12-25 23:23:27,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:23:27,957 INFO L276 IsEmpty]: Start isEmpty. Operand 19001 states and 27892 transitions. [2023-12-25 23:23:27,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2023-12-25 23:23:27,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:23:27,972 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:23:27,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-25 23:23:28,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:23:28,173 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:23:28,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:23:28,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1601569248, now seen corresponding path program 1 times [2023-12-25 23:23:28,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:23:28,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624432711] [2023-12-25 23:23:28,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:23:28,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:23:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:23:32,915 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:23:32,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:23:32,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624432711] [2023-12-25 23:23:32,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624432711] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:23:32,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114503412] [2023-12-25 23:23:32,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:23:32,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:23:32,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:23:32,917 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:23:32,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-25 23:23:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:23:33,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 2549 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-25 23:23:33,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:23:34,243 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 165 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:23:34,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:23:35,410 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:23:35,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114503412] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:23:35,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:23:35,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 25, 15] total 43 [2023-12-25 23:23:35,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338761887] [2023-12-25 23:23:35,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:23:35,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-25 23:23:35,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:23:35,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-25 23:23:35,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1634, Unknown=0, NotChecked=0, Total=1806 [2023-12-25 23:23:35,413 INFO L87 Difference]: Start difference. First operand 19001 states and 27892 transitions. Second operand has 43 states, 43 states have (on average 17.74418604651163) internal successors, (763), 43 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:24:12,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:24:12,678 INFO L93 Difference]: Finished difference Result 265453 states and 401675 transitions. [2023-12-25 23:24:12,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 743 states. [2023-12-25 23:24:12,679 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 17.74418604651163) internal successors, (763), 43 states have internal predecessors, (763), 0 states have call successors, (0), 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 384 [2023-12-25 23:24:12,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:24:12,919 INFO L225 Difference]: With dead ends: 265453 [2023-12-25 23:24:12,919 INFO L226 Difference]: Without dead ends: 249710 [2023-12-25 23:24:12,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1650 GetRequests, 869 SyntacticMatches, 2 SemanticMatches, 779 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295091 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=57139, Invalid=552041, Unknown=0, NotChecked=0, Total=609180 [2023-12-25 23:24:12,987 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 141087 mSDsluCounter, 32145 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141087 SdHoareTripleChecker+Valid, 33056 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-25 23:24:12,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141087 Valid, 33056 Invalid, 2648 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [114 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-25 23:24:13,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249710 states. [2023-12-25 23:24:14,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249710 to 22093. [2023-12-25 23:24:14,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22093 states, 22092 states have (on average 1.4679521998913634) internal successors, (32430), 22092 states have internal predecessors, (32430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:24:14,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22093 states to 22093 states and 32430 transitions. [2023-12-25 23:24:14,656 INFO L78 Accepts]: Start accepts. Automaton has 22093 states and 32430 transitions. Word has length 384 [2023-12-25 23:24:14,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:24:14,656 INFO L495 AbstractCegarLoop]: Abstraction has 22093 states and 32430 transitions. [2023-12-25 23:24:14,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 17.74418604651163) internal successors, (763), 43 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:24:14,656 INFO L276 IsEmpty]: Start isEmpty. Operand 22093 states and 32430 transitions. [2023-12-25 23:24:14,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2023-12-25 23:24:14,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:24:14,674 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:24:14,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-25 23:24:14,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:24:14,885 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:24:14,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:24:14,885 INFO L85 PathProgramCache]: Analyzing trace with hash -617383758, now seen corresponding path program 1 times [2023-12-25 23:24:14,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:24:14,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211389850] [2023-12-25 23:24:14,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:24:14,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:24:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:24:15,820 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-25 23:24:15,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:24:15,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211389850] [2023-12-25 23:24:15,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211389850] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:24:15,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138766984] [2023-12-25 23:24:15,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:24:15,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:24:15,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:24:15,822 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:24:15,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-25 23:24:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:24:16,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 2549 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-25 23:24:16,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:24:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 195 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:24:16,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:24:17,883 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 194 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:24:17,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138766984] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:24:17,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:24:17,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 20, 19] total 40 [2023-12-25 23:24:17,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341696611] [2023-12-25 23:24:17,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:24:17,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-25 23:24:17,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:24:17,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-25 23:24:17,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1427, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 23:24:17,885 INFO L87 Difference]: Start difference. First operand 22093 states and 32430 transitions. Second operand has 40 states, 40 states have (on average 20.25) internal successors, (810), 40 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:25:37,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:25:37,666 INFO L93 Difference]: Finished difference Result 627719 states and 946135 transitions. [2023-12-25 23:25:37,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1166 states. [2023-12-25 23:25:37,666 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 20.25) internal successors, (810), 40 states have internal predecessors, (810), 0 states have call successors, (0), 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 384 [2023-12-25 23:25:37,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:25:38,374 INFO L225 Difference]: With dead ends: 627719 [2023-12-25 23:25:38,374 INFO L226 Difference]: Without dead ends: 606041 [2023-12-25 23:25:38,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2178 GetRequests, 976 SyntacticMatches, 0 SemanticMatches, 1202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706361 ImplicationChecksByTransitivity, 50.5s TimeCoverageRelationStatistics Valid=88742, Invalid=1359670, Unknown=0, NotChecked=0, Total=1448412 [2023-12-25 23:25:38,547 INFO L413 NwaCegarLoop]: 2679 mSDtfsCounter, 59193 mSDsluCounter, 83836 mSDsCounter, 0 mSdLazyCounter, 13496 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59193 SdHoareTripleChecker+Valid, 86515 SdHoareTripleChecker+Invalid, 13565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 13496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:25:38,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59193 Valid, 86515 Invalid, 13565 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [69 Valid, 13496 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-12-25 23:25:38,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606041 states. [2023-12-25 23:25:41,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606041 to 25489. [2023-12-25 23:25:41,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25489 states, 25488 states have (on average 1.4770872567482738) internal successors, (37648), 25488 states have internal predecessors, (37648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:25:41,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25489 states to 25489 states and 37648 transitions. [2023-12-25 23:25:41,770 INFO L78 Accepts]: Start accepts. Automaton has 25489 states and 37648 transitions. Word has length 384 [2023-12-25 23:25:41,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:25:41,770 INFO L495 AbstractCegarLoop]: Abstraction has 25489 states and 37648 transitions. [2023-12-25 23:25:41,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 20.25) internal successors, (810), 40 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:25:41,770 INFO L276 IsEmpty]: Start isEmpty. Operand 25489 states and 37648 transitions. [2023-12-25 23:25:41,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2023-12-25 23:25:41,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:25:41,791 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:25:41,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-25 23:25:41,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-25 23:25:41,996 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:25:41,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:25:41,997 INFO L85 PathProgramCache]: Analyzing trace with hash 887708120, now seen corresponding path program 1 times [2023-12-25 23:25:41,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:25:41,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959801435] [2023-12-25 23:25:41,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:25:41,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:25:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:25:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 158 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-25 23:25:43,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:25:43,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959801435] [2023-12-25 23:25:43,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959801435] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:25:43,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862857882] [2023-12-25 23:25:43,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:25:43,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:25:43,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:25:43,478 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:25:43,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-25 23:25:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:25:43,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 2549 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-25 23:25:43,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:25:44,219 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 195 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:25:44,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:25:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:25:44,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862857882] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 23:25:44,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-25 23:25:44,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 15] total 27 [2023-12-25 23:25:44,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978546592] [2023-12-25 23:25:44,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:25:44,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 23:25:44,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:25:44,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 23:25:44,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2023-12-25 23:25:44,533 INFO L87 Difference]: Start difference. First operand 25489 states and 37648 transitions. Second operand has 9 states, 9 states have (on average 42.666666666666664) internal successors, (384), 9 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:25:46,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:25:46,006 INFO L93 Difference]: Finished difference Result 65972 states and 98272 transitions. [2023-12-25 23:25:46,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 23:25:46,007 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 42.666666666666664) internal successors, (384), 9 states have internal predecessors, (384), 0 states have call successors, (0), 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 384 [2023-12-25 23:25:46,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:25:46,037 INFO L225 Difference]: With dead ends: 65972 [2023-12-25 23:25:46,037 INFO L226 Difference]: Without dead ends: 45417 [2023-12-25 23:25:46,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=1198, Unknown=0, NotChecked=0, Total=1332 [2023-12-25 23:25:46,047 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 1886 mSDsluCounter, 5218 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 6022 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:25:46,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 6022 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:25:46,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45417 states. [2023-12-25 23:25:46,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45417 to 25735. [2023-12-25 23:25:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25735 states, 25734 states have (on average 1.4739255459703116) internal successors, (37930), 25734 states have internal predecessors, (37930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:25:46,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25735 states to 25735 states and 37930 transitions. [2023-12-25 23:25:46,934 INFO L78 Accepts]: Start accepts. Automaton has 25735 states and 37930 transitions. Word has length 384 [2023-12-25 23:25:46,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:25:46,935 INFO L495 AbstractCegarLoop]: Abstraction has 25735 states and 37930 transitions. [2023-12-25 23:25:46,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 42.666666666666664) internal successors, (384), 9 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:25:46,935 INFO L276 IsEmpty]: Start isEmpty. Operand 25735 states and 37930 transitions. [2023-12-25 23:25:46,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2023-12-25 23:25:46,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:25:46,957 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:25:46,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-25 23:25:47,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-25 23:25:47,159 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:25:47,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:25:47,159 INFO L85 PathProgramCache]: Analyzing trace with hash -869150772, now seen corresponding path program 1 times [2023-12-25 23:25:47,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:25:47,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763724453] [2023-12-25 23:25:47,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:25:47,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:25:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:25:50,120 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-25 23:25:50,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:25:50,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763724453] [2023-12-25 23:25:50,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763724453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:25:50,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:25:50,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 23:25:50,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821352821] [2023-12-25 23:25:50,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:25:50,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 23:25:50,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:25:50,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 23:25:50,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-25 23:25:50,122 INFO L87 Difference]: Start difference. First operand 25735 states and 37930 transitions. Second operand has 9 states, 9 states have (on average 38.55555555555556) internal successors, (347), 8 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:25:53,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:25:53,532 INFO L93 Difference]: Finished difference Result 95745 states and 140759 transitions. [2023-12-25 23:25:53,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 23:25:53,533 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 38.55555555555556) internal successors, (347), 8 states have internal predecessors, (347), 0 states have call successors, (0), 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 384 [2023-12-25 23:25:53,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:25:53,588 INFO L225 Difference]: With dead ends: 95745 [2023-12-25 23:25:53,588 INFO L226 Difference]: Without dead ends: 71173 [2023-12-25 23:25:53,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2023-12-25 23:25:53,600 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 1635 mSDsluCounter, 3534 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 4472 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:25:53,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1635 Valid, 4472 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-25 23:25:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71173 states. [2023-12-25 23:25:54,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71173 to 26468. [2023-12-25 23:25:54,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26468 states, 26467 states have (on average 1.4740242566214532) internal successors, (39013), 26467 states have internal predecessors, (39013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:25:54,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26468 states to 26468 states and 39013 transitions. [2023-12-25 23:25:54,707 INFO L78 Accepts]: Start accepts. Automaton has 26468 states and 39013 transitions. Word has length 384 [2023-12-25 23:25:54,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:25:54,707 INFO L495 AbstractCegarLoop]: Abstraction has 26468 states and 39013 transitions. [2023-12-25 23:25:54,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 38.55555555555556) internal successors, (347), 8 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:25:54,708 INFO L276 IsEmpty]: Start isEmpty. Operand 26468 states and 39013 transitions. [2023-12-25 23:25:54,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2023-12-25 23:25:54,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:25:54,732 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 23:25:54,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-25 23:25:54,732 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:25:54,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:25:54,733 INFO L85 PathProgramCache]: Analyzing trace with hash -524322610, now seen corresponding path program 1 times [2023-12-25 23:25:54,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:25:54,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473651680] [2023-12-25 23:25:54,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:25:54,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:25:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:25:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 176 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-25 23:25:58,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:25:58,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473651680] [2023-12-25 23:25:58,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473651680] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:25:58,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50039163] [2023-12-25 23:25:58,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:25:58,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:25:58,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:25:58,394 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:25:58,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-25 23:25:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:25:58,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 2550 conjuncts, 152 conjunts are in the unsatisfiable core [2023-12-25 23:25:58,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:26:00,330 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 182 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:26:00,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:26:00,901 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-25 23:26:00,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50039163] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 23:26:00,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-25 23:26:00,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8, 28] total 45 [2023-12-25 23:26:00,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546373671] [2023-12-25 23:26:00,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:26:00,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 23:26:00,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:26:00,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 23:26:00,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1806, Unknown=0, NotChecked=0, Total=1980 [2023-12-25 23:26:00,903 INFO L87 Difference]: Start difference. First operand 26468 states and 39013 transitions. Second operand has 12 states, 12 states have (on average 28.916666666666668) internal successors, (347), 12 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:26:04,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:26:04,438 INFO L93 Difference]: Finished difference Result 254650 states and 383961 transitions. [2023-12-25 23:26:04,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-25 23:26:04,439 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 28.916666666666668) internal successors, (347), 12 states have internal predecessors, (347), 0 states have call successors, (0), 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 384 [2023-12-25 23:26:04,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:26:04,633 INFO L225 Difference]: With dead ends: 254650 [2023-12-25 23:26:04,634 INFO L226 Difference]: Without dead ends: 231714 [2023-12-25 23:26:04,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 752 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1637 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=643, Invalid=5057, Unknown=0, NotChecked=0, Total=5700 [2023-12-25 23:26:04,655 INFO L413 NwaCegarLoop]: 2613 mSDtfsCounter, 2260 mSDsluCounter, 14460 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2260 SdHoareTripleChecker+Valid, 17073 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 23:26:04,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2260 Valid, 17073 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 23:26:04,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231714 states. Received shutdown request... [2023-12-25 23:26:05,826 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 23:26:05,826 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 23:26:06,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231714 to 38705. [2023-12-25 23:26:06,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38705 states, 38704 states have (on average 1.4979330301777594) internal successors, (57976), 38704 states have internal predecessors, (57976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:26:06,473 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 23:26:06,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-25 23:26:06,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-25 23:26:06,674 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-25 23:26:06,678 INFO L445 BasicCegarLoop]: Path program 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] [2023-12-25 23:26:06,680 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 23:26:06,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 11:26:06 BoogieIcfgContainer [2023-12-25 23:26:06,681 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 23:26:06,682 INFO L158 Benchmark]: Toolchain (without parser) took 730979.57ms. Allocated memory was 194.0MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 164.1MB in the beginning and 5.7GB in the end (delta: -5.5GB). Peak memory consumption was 3.5GB. Max. memory is 8.0GB. [2023-12-25 23:26:06,682 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 194.0MB. Free memory is still 151.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 23:26:06,682 INFO L158 Benchmark]: CACSL2BoogieTranslator took 508.45ms. Allocated memory is still 194.0MB. Free memory was 163.6MB in the beginning and 136.4MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-12-25 23:26:06,682 INFO L158 Benchmark]: Boogie Procedure Inliner took 167.07ms. Allocated memory is still 194.0MB. Free memory was 136.4MB in the beginning and 106.4MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2023-12-25 23:26:06,682 INFO L158 Benchmark]: Boogie Preprocessor took 224.02ms. Allocated memory is still 194.0MB. Free memory was 106.4MB in the beginning and 90.2MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-25 23:26:06,682 INFO L158 Benchmark]: RCFGBuilder took 1458.86ms. Allocated memory was 194.0MB in the beginning and 298.8MB in the end (delta: 104.9MB). Free memory was 90.2MB in the beginning and 183.6MB in the end (delta: -93.4MB). Peak memory consumption was 37.1MB. Max. memory is 8.0GB. [2023-12-25 23:26:06,682 INFO L158 Benchmark]: TraceAbstraction took 728613.77ms. Allocated memory was 298.8MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 182.6MB in the beginning and 5.7GB in the end (delta: -5.5GB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2023-12-25 23:26:06,683 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 194.0MB. Free memory is still 151.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 508.45ms. Allocated memory is still 194.0MB. Free memory was 163.6MB in the beginning and 136.4MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 167.07ms. Allocated memory is still 194.0MB. Free memory was 136.4MB in the beginning and 106.4MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 224.02ms. Allocated memory is still 194.0MB. Free memory was 106.4MB in the beginning and 90.2MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * RCFGBuilder took 1458.86ms. Allocated memory was 194.0MB in the beginning and 298.8MB in the end (delta: 104.9MB). Free memory was 90.2MB in the beginning and 183.6MB in the end (delta: -93.4MB). Peak memory consumption was 37.1MB. Max. memory is 8.0GB. * TraceAbstraction took 728613.77ms. Allocated memory was 298.8MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 182.6MB in the beginning and 5.7GB in the end (delta: -5.5GB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 272 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 728.6s, OverallIterations: 39, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.5s, AutomataDifference: 604.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 689847 SdHoareTripleChecker+Valid, 63.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 689847 mSDsluCounter, 506386 SdHoareTripleChecker+Invalid, 55.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 475465 mSDsCounter, 909 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94084 IncrementalHoareTripleChecker+Invalid, 94993 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 909 mSolverCounterUnsat, 30921 mSDtfsCounter, 94084 mSolverCounterSat, 1.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24898 GetRequests, 16496 SyntacticMatches, 4 SemanticMatches, 8398 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6136132 ImplicationChecksByTransitivity, 438.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27804occurred in iteration=31, InterpolantAutomatonStates: 7893, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 22.4s AutomataMinimizationTime, 39 MinimizatonAttempts, 2057262 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.6s SsaConstructionTime, 30.9s SatisfiabilityAnalysisTime, 60.0s InterpolantComputationTime, 18914 NumberOfCodeBlocks, 18914 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 26383 ConstructedInterpolants, 0 QuantifiedInterpolants, 139118 SizeOfPredicates, 393 NumberOfNonLiveVariables, 51685 ConjunctsInSsa, 1243 ConjunctsInUnsatCore, 82 InterpolantComputations, 27 PerfectInterpolantSequences, 12576/13628 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown