/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:36:06,374 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:36:06,438 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 11:36:06,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:36:06,441 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:36:06,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:36:06,462 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:36:06,462 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:36:06,463 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:36:06,463 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:36:06,463 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:36:06,465 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:36:06,466 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:36:06,469 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:36:06,469 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:36:06,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:36:06,470 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:36:06,470 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:36:06,470 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:36:06,471 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:36:06,471 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:36:06,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:36:06,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:36:06,473 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:36:06,473 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:36:06,474 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:36:06,474 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:36:06,474 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:36:06,474 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:36:06,475 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:36:06,475 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:36:06,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:36:06,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:36:06,476 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:36:06,476 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:36:06,476 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:36:06,476 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:36:06,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:36:06,477 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:36:06,477 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:36:06,477 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:36:06,477 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:36:06,477 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:36:06,477 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:36:06,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:36:06,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:36:06,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:36:06,695 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:36:06,695 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:36:06,696 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c [2023-12-21 11:36:07,813 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:36:08,015 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:36:08,016 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c [2023-12-21 11:36:08,026 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc8a5b102/425ae0b610f04ca99df07edf02833f19/FLAGa1f4910f0 [2023-12-21 11:36:08,039 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc8a5b102/425ae0b610f04ca99df07edf02833f19 [2023-12-21 11:36:08,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:36:08,042 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:36:08,045 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:36:08,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:36:08,048 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:36:08,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:36:08" (1/1) ... [2023-12-21 11:36:08,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@103865b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:36:08, skipping insertion in model container [2023-12-21 11:36:08,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:36:08" (1/1) ... [2023-12-21 11:36:08,084 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:36:08,241 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c[9433,9446] [2023-12-21 11:36:08,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:36:08,254 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:36:08,295 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c[9433,9446] [2023-12-21 11:36:08,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:36:08,308 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:36:08,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:36:08 WrapperNode [2023-12-21 11:36:08,308 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:36:08,309 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:36:08,309 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:36:08,309 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:36:08,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:36:08" (1/1) ... [2023-12-21 11:36:08,327 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:36:08" (1/1) ... [2023-12-21 11:36:08,353 INFO L138 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 308 [2023-12-21 11:36:08,354 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:36:08,354 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:36:08,354 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:36:08,354 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:36:08,363 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:36:08" (1/1) ... [2023-12-21 11:36:08,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:36:08" (1/1) ... [2023-12-21 11:36:08,366 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:36:08" (1/1) ... [2023-12-21 11:36:08,378 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]. [2023-12-21 11:36:08,378 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:36:08" (1/1) ... [2023-12-21 11:36:08,378 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:36:08" (1/1) ... [2023-12-21 11:36:08,390 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:36:08" (1/1) ... [2023-12-21 11:36:08,393 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:36:08" (1/1) ... [2023-12-21 11:36:08,395 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:36:08" (1/1) ... [2023-12-21 11:36:08,396 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:36:08" (1/1) ... [2023-12-21 11:36:08,398 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:36:08,398 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:36:08,398 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:36:08,398 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:36:08,407 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:36:08" (1/1) ... [2023-12-21 11:36:08,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:36:08,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:36:08,450 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) [2023-12-21 11:36:08,500 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 [2023-12-21 11:36:08,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:36:08,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:36:08,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:36:08,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:36:08,630 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:36:08,632 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:36:09,001 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:36:09,027 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:36:09,028 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 11:36:09,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:36:09 BoogieIcfgContainer [2023-12-21 11:36:09,028 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:36:09,030 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:36:09,030 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:36:09,032 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:36:09,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:36:08" (1/3) ... [2023-12-21 11:36:09,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38bcbc7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:36:09, skipping insertion in model container [2023-12-21 11:36:09,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:36:08" (2/3) ... [2023-12-21 11:36:09,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38bcbc7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:36:09, skipping insertion in model container [2023-12-21 11:36:09,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:36:09" (3/3) ... [2023-12-21 11:36:09,034 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c [2023-12-21 11:36:09,045 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:36:09,045 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:36:09,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:36:09,087 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;@3b5a5d2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:36:09,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:36:09,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 77 states have (on average 1.7792207792207793) internal successors, (137), 78 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:09,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 11:36:09,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:09,101 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] [2023-12-21 11:36:09,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:09,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:09,110 INFO L85 PathProgramCache]: Analyzing trace with hash -408434164, now seen corresponding path program 1 times [2023-12-21 11:36:09,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:09,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658572953] [2023-12-21 11:36:09,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:09,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:09,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:09,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658572953] [2023-12-21 11:36:09,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658572953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:09,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:09,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:36:09,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731220808] [2023-12-21 11:36:09,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:09,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 11:36:09,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:09,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 11:36:09,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:36:09,330 INFO L87 Difference]: Start difference. First operand has 79 states, 77 states have (on average 1.7792207792207793) internal successors, (137), 78 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:09,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:09,371 INFO L93 Difference]: Finished difference Result 131 states and 222 transitions. [2023-12-21 11:36:09,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 11:36:09,372 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-21 11:36:09,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:09,380 INFO L225 Difference]: With dead ends: 131 [2023-12-21 11:36:09,380 INFO L226 Difference]: Without dead ends: 77 [2023-12-21 11:36:09,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:36:09,387 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:09,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:09,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-21 11:36:09,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-12-21 11:36:09,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.736842105263158) internal successors, (132), 76 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 132 transitions. [2023-12-21 11:36:09,421 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 132 transitions. Word has length 26 [2023-12-21 11:36:09,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:09,421 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 132 transitions. [2023-12-21 11:36:09,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:09,421 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 132 transitions. [2023-12-21 11:36:09,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 11:36:09,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:09,423 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] [2023-12-21 11:36:09,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:36:09,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:09,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:09,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2081094798, now seen corresponding path program 1 times [2023-12-21 11:36:09,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:09,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882524582] [2023-12-21 11:36:09,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:09,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:09,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:09,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:09,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882524582] [2023-12-21 11:36:09,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882524582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:09,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:09,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:36:09,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906340158] [2023-12-21 11:36:09,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:09,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:36:09,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:09,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:36:09,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:36:09,593 INFO L87 Difference]: Start difference. First operand 77 states and 132 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:09,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:09,674 INFO L93 Difference]: Finished difference Result 178 states and 295 transitions. [2023-12-21 11:36:09,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:36:09,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-21 11:36:09,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:09,676 INFO L225 Difference]: With dead ends: 178 [2023-12-21 11:36:09,676 INFO L226 Difference]: Without dead ends: 126 [2023-12-21 11:36:09,677 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 [2023-12-21 11:36:09,678 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 79 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:09,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 354 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:36:09,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-21 11:36:09,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 77. [2023-12-21 11:36:09,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 76 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:09,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 108 transitions. [2023-12-21 11:36:09,691 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 108 transitions. Word has length 26 [2023-12-21 11:36:09,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:09,691 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 108 transitions. [2023-12-21 11:36:09,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:09,691 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 108 transitions. [2023-12-21 11:36:09,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 11:36:09,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:09,692 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] [2023-12-21 11:36:09,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:36:09,693 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:09,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:09,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1094162009, now seen corresponding path program 1 times [2023-12-21 11:36:09,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:09,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73639045] [2023-12-21 11:36:09,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:09,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:09,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:09,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73639045] [2023-12-21 11:36:09,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73639045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:09,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:09,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:36:09,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676852090] [2023-12-21 11:36:09,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:09,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:36:09,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:09,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:36:09,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:09,806 INFO L87 Difference]: Start difference. First operand 77 states and 108 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:09,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:09,827 INFO L93 Difference]: Finished difference Result 167 states and 254 transitions. [2023-12-21 11:36:09,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:36:09,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-12-21 11:36:09,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:09,834 INFO L225 Difference]: With dead ends: 167 [2023-12-21 11:36:09,835 INFO L226 Difference]: Without dead ends: 118 [2023-12-21 11:36:09,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:09,839 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 64 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:09,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 229 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:09,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-21 11:36:09,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2023-12-21 11:36:09,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.4956521739130435) internal successors, (172), 115 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:09,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 172 transitions. [2023-12-21 11:36:09,848 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 172 transitions. Word has length 49 [2023-12-21 11:36:09,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:09,848 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 172 transitions. [2023-12-21 11:36:09,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:09,849 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 172 transitions. [2023-12-21 11:36:09,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 11:36:09,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:09,850 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] [2023-12-21 11:36:09,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:36:09,850 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:09,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:09,851 INFO L85 PathProgramCache]: Analyzing trace with hash -114750088, now seen corresponding path program 1 times [2023-12-21 11:36:09,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:09,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455507435] [2023-12-21 11:36:09,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:09,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:09,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:09,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455507435] [2023-12-21 11:36:09,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455507435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:09,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:09,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:36:09,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726628681] [2023-12-21 11:36:09,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:09,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:36:09,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:09,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:36:09,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:09,919 INFO L87 Difference]: Start difference. First operand 116 states and 172 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:09,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:09,937 INFO L93 Difference]: Finished difference Result 276 states and 432 transitions. [2023-12-21 11:36:09,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:36:09,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-12-21 11:36:09,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:09,939 INFO L225 Difference]: With dead ends: 276 [2023-12-21 11:36:09,939 INFO L226 Difference]: Without dead ends: 188 [2023-12-21 11:36:09,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:09,941 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 60 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:09,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 226 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:09,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-21 11:36:09,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2023-12-21 11:36:09,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.5405405405405406) internal successors, (285), 185 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:09,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 285 transitions. [2023-12-21 11:36:09,952 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 285 transitions. Word has length 49 [2023-12-21 11:36:09,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:09,952 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 285 transitions. [2023-12-21 11:36:09,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:09,953 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 285 transitions. [2023-12-21 11:36:09,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 11:36:09,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:09,954 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] [2023-12-21 11:36:09,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:36:09,954 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:09,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:09,955 INFO L85 PathProgramCache]: Analyzing trace with hash 796453911, now seen corresponding path program 1 times [2023-12-21 11:36:09,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:09,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431981556] [2023-12-21 11:36:09,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:09,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:10,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:10,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:10,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431981556] [2023-12-21 11:36:10,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431981556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:10,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:10,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:36:10,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307215310] [2023-12-21 11:36:10,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:10,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:36:10,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:10,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:36:10,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:36:10,072 INFO L87 Difference]: Start difference. First operand 186 states and 285 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:10,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:10,170 INFO L93 Difference]: Finished difference Result 976 states and 1570 transitions. [2023-12-21 11:36:10,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:36:10,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-12-21 11:36:10,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:10,175 INFO L225 Difference]: With dead ends: 976 [2023-12-21 11:36:10,175 INFO L226 Difference]: Without dead ends: 818 [2023-12-21 11:36:10,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-21 11:36:10,179 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 733 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:10,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 660 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:10,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-21 11:36:10,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 342. [2023-12-21 11:36:10,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 1.563049853372434) internal successors, (533), 341 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:10,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 533 transitions. [2023-12-21 11:36:10,211 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 533 transitions. Word has length 49 [2023-12-21 11:36:10,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:10,212 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 533 transitions. [2023-12-21 11:36:10,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:10,212 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 533 transitions. [2023-12-21 11:36:10,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 11:36:10,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:10,216 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] [2023-12-21 11:36:10,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:36:10,216 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:10,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:10,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1092763391, now seen corresponding path program 1 times [2023-12-21 11:36:10,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:10,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193619532] [2023-12-21 11:36:10,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:10,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:10,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:10,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:10,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193619532] [2023-12-21 11:36:10,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193619532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:10,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:10,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:36:10,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922838635] [2023-12-21 11:36:10,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:10,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:36:10,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:10,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:36:10,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:36:10,411 INFO L87 Difference]: Start difference. First operand 342 states and 533 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2023-12-21 11:36:10,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:10,438 INFO L93 Difference]: Finished difference Result 368 states and 566 transitions. [2023-12-21 11:36:10,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:36:10,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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 [2023-12-21 11:36:10,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:10,440 INFO L225 Difference]: With dead ends: 368 [2023-12-21 11:36:10,441 INFO L226 Difference]: Without dead ends: 366 [2023-12-21 11:36:10,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:36:10,443 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 2 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:10,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 504 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:10,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-12-21 11:36:10,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 358. [2023-12-21 11:36:10,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.5378151260504203) internal successors, (549), 357 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:10,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 549 transitions. [2023-12-21 11:36:10,460 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 549 transitions. Word has length 50 [2023-12-21 11:36:10,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:10,461 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 549 transitions. [2023-12-21 11:36:10,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2023-12-21 11:36:10,461 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 549 transitions. [2023-12-21 11:36:10,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 11:36:10,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:10,463 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] [2023-12-21 11:36:10,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:36:10,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:10,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:10,464 INFO L85 PathProgramCache]: Analyzing trace with hash 485103743, now seen corresponding path program 1 times [2023-12-21 11:36:10,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:10,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726136435] [2023-12-21 11:36:10,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:10,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:10,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:10,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:10,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726136435] [2023-12-21 11:36:10,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726136435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:10,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:10,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:36:10,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905193884] [2023-12-21 11:36:10,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:10,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:36:10,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:10,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:36:10,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:10,549 INFO L87 Difference]: Start difference. First operand 358 states and 549 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2023-12-21 11:36:10,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:10,570 INFO L93 Difference]: Finished difference Result 962 states and 1495 transitions. [2023-12-21 11:36:10,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:36:10,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 [2023-12-21 11:36:10,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:10,573 INFO L225 Difference]: With dead ends: 962 [2023-12-21 11:36:10,573 INFO L226 Difference]: Without dead ends: 632 [2023-12-21 11:36:10,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:10,575 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 49 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:10,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 181 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:10,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-12-21 11:36:10,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 630. [2023-12-21 11:36:10,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 1.534181240063593) internal successors, (965), 629 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:10,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 965 transitions. [2023-12-21 11:36:10,590 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 965 transitions. Word has length 51 [2023-12-21 11:36:10,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:10,590 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 965 transitions. [2023-12-21 11:36:10,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2023-12-21 11:36:10,590 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 965 transitions. [2023-12-21 11:36:10,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 11:36:10,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:10,591 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] [2023-12-21 11:36:10,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:36:10,591 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:10,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:10,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1884075168, now seen corresponding path program 1 times [2023-12-21 11:36:10,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:10,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743581319] [2023-12-21 11:36:10,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:10,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:10,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:10,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743581319] [2023-12-21 11:36:10,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743581319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:10,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:10,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:36:10,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136312207] [2023-12-21 11:36:10,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:10,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:36:10,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:10,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:36:10,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:10,635 INFO L87 Difference]: Start difference. First operand 630 states and 965 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2023-12-21 11:36:10,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:10,656 INFO L93 Difference]: Finished difference Result 1228 states and 1898 transitions. [2023-12-21 11:36:10,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:36:10,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 [2023-12-21 11:36:10,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:10,660 INFO L225 Difference]: With dead ends: 1228 [2023-12-21 11:36:10,660 INFO L226 Difference]: Without dead ends: 898 [2023-12-21 11:36:10,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:10,661 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 68 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:10,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 239 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:10,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2023-12-21 11:36:10,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 896. [2023-12-21 11:36:10,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 1.5273743016759778) internal successors, (1367), 895 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:10,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1367 transitions. [2023-12-21 11:36:10,680 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1367 transitions. Word has length 51 [2023-12-21 11:36:10,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:10,680 INFO L495 AbstractCegarLoop]: Abstraction has 896 states and 1367 transitions. [2023-12-21 11:36:10,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2023-12-21 11:36:10,680 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1367 transitions. [2023-12-21 11:36:10,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 11:36:10,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:10,681 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] [2023-12-21 11:36:10,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:36:10,681 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:10,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:10,681 INFO L85 PathProgramCache]: Analyzing trace with hash 2119290152, now seen corresponding path program 1 times [2023-12-21 11:36:10,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:10,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162726380] [2023-12-21 11:36:10,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:10,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:10,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:10,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:10,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162726380] [2023-12-21 11:36:10,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162726380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:10,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:10,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:36:10,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230845488] [2023-12-21 11:36:10,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:10,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:36:10,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:10,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:36:10,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:10,727 INFO L87 Difference]: Start difference. First operand 896 states and 1367 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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) [2023-12-21 11:36:10,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:10,759 INFO L93 Difference]: Finished difference Result 2436 states and 3705 transitions. [2023-12-21 11:36:10,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:36:10,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 [2023-12-21 11:36:10,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:10,764 INFO L225 Difference]: With dead ends: 2436 [2023-12-21 11:36:10,765 INFO L226 Difference]: Without dead ends: 1570 [2023-12-21 11:36:10,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:10,769 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 56 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:10,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 233 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:10,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2023-12-21 11:36:10,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1568. [2023-12-21 11:36:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1567 states have (on average 1.4952137843012125) internal successors, (2343), 1567 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:10,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2343 transitions. [2023-12-21 11:36:10,806 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2343 transitions. Word has length 52 [2023-12-21 11:36:10,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:10,807 INFO L495 AbstractCegarLoop]: Abstraction has 1568 states and 2343 transitions. [2023-12-21 11:36:10,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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) [2023-12-21 11:36:10,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2343 transitions. [2023-12-21 11:36:10,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-21 11:36:10,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:10,808 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:36:10,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:36:10,808 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:10,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:10,809 INFO L85 PathProgramCache]: Analyzing trace with hash -2124847998, now seen corresponding path program 1 times [2023-12-21 11:36:10,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:10,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128986027] [2023-12-21 11:36:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:10,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:10,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:10,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128986027] [2023-12-21 11:36:10,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128986027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:10,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:10,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:36:10,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041253261] [2023-12-21 11:36:10,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:10,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:36:10,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:10,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:36:10,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:10,893 INFO L87 Difference]: Start difference. First operand 1568 states and 2343 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:10,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:10,926 INFO L93 Difference]: Finished difference Result 3108 states and 4657 transitions. [2023-12-21 11:36:10,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:36:10,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2023-12-21 11:36:10,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:10,931 INFO L225 Difference]: With dead ends: 3108 [2023-12-21 11:36:10,932 INFO L226 Difference]: Without dead ends: 1570 [2023-12-21 11:36:10,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:10,934 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 54 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:10,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 224 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:10,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2023-12-21 11:36:10,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1568. [2023-12-21 11:36:10,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1567 states have (on average 1.4798978940650924) internal successors, (2319), 1567 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:10,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2319 transitions. [2023-12-21 11:36:10,969 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2319 transitions. Word has length 73 [2023-12-21 11:36:10,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:10,969 INFO L495 AbstractCegarLoop]: Abstraction has 1568 states and 2319 transitions. [2023-12-21 11:36:10,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:10,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2319 transitions. [2023-12-21 11:36:10,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-21 11:36:10,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:10,970 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:36:10,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:36:10,970 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:10,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:10,971 INFO L85 PathProgramCache]: Analyzing trace with hash -172725725, now seen corresponding path program 1 times [2023-12-21 11:36:10,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:10,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657226966] [2023-12-21 11:36:10,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:10,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:12,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:12,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657226966] [2023-12-21 11:36:12,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657226966] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:36:12,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963092609] [2023-12-21 11:36:12,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:12,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:36:12,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:36:12,390 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) [2023-12-21 11:36:12,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 11:36:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:12,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 11:36:12,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:36:12,671 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:36:12,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:36:12,960 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:36:12,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963092609] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:36:12,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:36:12,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 6] total 21 [2023-12-21 11:36:12,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281429010] [2023-12-21 11:36:12,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:36:12,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 11:36:12,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:12,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 11:36:12,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2023-12-21 11:36:12,962 INFO L87 Difference]: Start difference. First operand 1568 states and 2319 transitions. Second operand has 21 states, 21 states have (on average 9.904761904761905) internal successors, (208), 21 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:16,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:16,577 INFO L93 Difference]: Finished difference Result 15206 states and 22042 transitions. [2023-12-21 11:36:16,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-12-21 11:36:16,578 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.904761904761905) internal successors, (208), 21 states have internal predecessors, (208), 0 states have call successors, (0), 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 73 [2023-12-21 11:36:16,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:16,613 INFO L225 Difference]: With dead ends: 15206 [2023-12-21 11:36:16,613 INFO L226 Difference]: Without dead ends: 14148 [2023-12-21 11:36:16,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3906 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1715, Invalid=8997, Unknown=0, NotChecked=0, Total=10712 [2023-12-21 11:36:16,621 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 5239 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5239 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:16,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5239 Valid, 1777 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 11:36:16,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14148 states. [2023-12-21 11:36:16,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14148 to 9744. [2023-12-21 11:36:16,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9744 states, 9743 states have (on average 1.4680283280303807) internal successors, (14303), 9743 states have internal predecessors, (14303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:16,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9744 states to 9744 states and 14303 transitions. [2023-12-21 11:36:16,872 INFO L78 Accepts]: Start accepts. Automaton has 9744 states and 14303 transitions. Word has length 73 [2023-12-21 11:36:16,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:16,872 INFO L495 AbstractCegarLoop]: Abstraction has 9744 states and 14303 transitions. [2023-12-21 11:36:16,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.904761904761905) internal successors, (208), 21 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:16,872 INFO L276 IsEmpty]: Start isEmpty. Operand 9744 states and 14303 transitions. [2023-12-21 11:36:16,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 11:36:16,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:16,875 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:36:16,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 11:36:17,080 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,SelfDestructingSolverStorable10 [2023-12-21 11:36:17,081 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:17,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:17,082 INFO L85 PathProgramCache]: Analyzing trace with hash 528187530, now seen corresponding path program 1 times [2023-12-21 11:36:17,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:17,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522045672] [2023-12-21 11:36:17,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:17,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:17,163 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 11:36:17,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:17,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522045672] [2023-12-21 11:36:17,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522045672] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:17,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:17,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:36:17,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336969680] [2023-12-21 11:36:17,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:17,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:36:17,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:17,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:36:17,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:36:17,165 INFO L87 Difference]: Start difference. First operand 9744 states and 14303 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:17,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:17,468 INFO L93 Difference]: Finished difference Result 28906 states and 42739 transitions. [2023-12-21 11:36:17,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:36:17,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 74 [2023-12-21 11:36:17,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:17,522 INFO L225 Difference]: With dead ends: 28906 [2023-12-21 11:36:17,522 INFO L226 Difference]: Without dead ends: 23894 [2023-12-21 11:36:17,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 11:36:17,531 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 455 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:17,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 659 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:17,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23894 states. [2023-12-21 11:36:17,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23894 to 14514. [2023-12-21 11:36:18,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14514 states, 14513 states have (on average 1.4630331426996486) internal successors, (21233), 14513 states have internal predecessors, (21233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:18,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14514 states to 14514 states and 21233 transitions. [2023-12-21 11:36:18,023 INFO L78 Accepts]: Start accepts. Automaton has 14514 states and 21233 transitions. Word has length 74 [2023-12-21 11:36:18,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:18,023 INFO L495 AbstractCegarLoop]: Abstraction has 14514 states and 21233 transitions. [2023-12-21 11:36:18,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:18,024 INFO L276 IsEmpty]: Start isEmpty. Operand 14514 states and 21233 transitions. [2023-12-21 11:36:18,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 11:36:18,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:18,025 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:36:18,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:36:18,025 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:18,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:18,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1273743992, now seen corresponding path program 1 times [2023-12-21 11:36:18,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:18,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577054590] [2023-12-21 11:36:18,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:18,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:18,092 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 11:36:18,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:18,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577054590] [2023-12-21 11:36:18,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577054590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:18,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:18,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:36:18,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043838986] [2023-12-21 11:36:18,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:18,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:36:18,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:18,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:36:18,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:36:18,094 INFO L87 Difference]: Start difference. First operand 14514 states and 21233 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:18,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:18,590 INFO L93 Difference]: Finished difference Result 33676 states and 49669 transitions. [2023-12-21 11:36:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:36:18,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 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 74 [2023-12-21 11:36:18,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:18,639 INFO L225 Difference]: With dead ends: 33676 [2023-12-21 11:36:18,639 INFO L226 Difference]: Without dead ends: 28664 [2023-12-21 11:36:18,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 11:36:18,653 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 496 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:18,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 585 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:18,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28664 states. [2023-12-21 11:36:19,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28664 to 19284. [2023-12-21 11:36:19,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19284 states, 19283 states have (on average 1.4605092568583726) internal successors, (28163), 19283 states have internal predecessors, (28163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:19,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19284 states to 19284 states and 28163 transitions. [2023-12-21 11:36:19,083 INFO L78 Accepts]: Start accepts. Automaton has 19284 states and 28163 transitions. Word has length 74 [2023-12-21 11:36:19,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:19,083 INFO L495 AbstractCegarLoop]: Abstraction has 19284 states and 28163 transitions. [2023-12-21 11:36:19,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:19,084 INFO L276 IsEmpty]: Start isEmpty. Operand 19284 states and 28163 transitions. [2023-12-21 11:36:19,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 11:36:19,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:19,085 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:36:19,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:36:19,085 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:19,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:19,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1898243706, now seen corresponding path program 1 times [2023-12-21 11:36:19,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:19,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762364011] [2023-12-21 11:36:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:19,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 11:36:19,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:19,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762364011] [2023-12-21 11:36:19,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762364011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:19,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:19,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:36:19,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35712738] [2023-12-21 11:36:19,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:19,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:36:19,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:19,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:36:19,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:36:19,154 INFO L87 Difference]: Start difference. First operand 19284 states and 28163 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:19,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:19,622 INFO L93 Difference]: Finished difference Result 38446 states and 56599 transitions. [2023-12-21 11:36:19,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:36:19,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 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 74 [2023-12-21 11:36:19,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:19,665 INFO L225 Difference]: With dead ends: 38446 [2023-12-21 11:36:19,665 INFO L226 Difference]: Without dead ends: 33434 [2023-12-21 11:36:19,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 11:36:19,678 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 464 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:19,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 657 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:19,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33434 states. [2023-12-21 11:36:20,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33434 to 24054. [2023-12-21 11:36:20,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24054 states, 24053 states have (on average 1.4589864050222425) internal successors, (35093), 24053 states have internal predecessors, (35093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:20,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24054 states to 24054 states and 35093 transitions. [2023-12-21 11:36:20,220 INFO L78 Accepts]: Start accepts. Automaton has 24054 states and 35093 transitions. Word has length 74 [2023-12-21 11:36:20,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:20,220 INFO L495 AbstractCegarLoop]: Abstraction has 24054 states and 35093 transitions. [2023-12-21 11:36:20,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:20,221 INFO L276 IsEmpty]: Start isEmpty. Operand 24054 states and 35093 transitions. [2023-12-21 11:36:20,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 11:36:20,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:20,222 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:36:20,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:36:20,222 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:20,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:20,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1185783157, now seen corresponding path program 1 times [2023-12-21 11:36:20,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:20,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968922199] [2023-12-21 11:36:20,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:20,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:20,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:36:20,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:20,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968922199] [2023-12-21 11:36:20,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968922199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:20,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:20,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:36:20,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965612729] [2023-12-21 11:36:20,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:20,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:36:20,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:20,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:36:20,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:36:20,385 INFO L87 Difference]: Start difference. First operand 24054 states and 35093 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:20,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:20,827 INFO L93 Difference]: Finished difference Result 41572 states and 61053 transitions. [2023-12-21 11:36:20,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:36:20,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 74 [2023-12-21 11:36:20,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:20,878 INFO L225 Difference]: With dead ends: 41572 [2023-12-21 11:36:20,878 INFO L226 Difference]: Without dead ends: 37592 [2023-12-21 11:36:20,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 11:36:20,894 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 451 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:20,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 729 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:20,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37592 states. [2023-12-21 11:36:21,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37592 to 28212. [2023-12-21 11:36:21,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28212 states, 28211 states have (on average 1.4572329942221118) internal successors, (41110), 28211 states have internal predecessors, (41110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:21,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28212 states to 28212 states and 41110 transitions. [2023-12-21 11:36:21,558 INFO L78 Accepts]: Start accepts. Automaton has 28212 states and 41110 transitions. Word has length 74 [2023-12-21 11:36:21,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:21,558 INFO L495 AbstractCegarLoop]: Abstraction has 28212 states and 41110 transitions. [2023-12-21 11:36:21,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:21,558 INFO L276 IsEmpty]: Start isEmpty. Operand 28212 states and 41110 transitions. [2023-12-21 11:36:21,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 11:36:21,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:21,560 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:36:21,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:36:21,561 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:21,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:21,561 INFO L85 PathProgramCache]: Analyzing trace with hash -927044264, now seen corresponding path program 1 times [2023-12-21 11:36:21,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:21,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853988031] [2023-12-21 11:36:21,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:21,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:21,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:21,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853988031] [2023-12-21 11:36:21,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853988031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:21,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:21,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:36:21,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739432426] [2023-12-21 11:36:21,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:21,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:36:21,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:21,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:36:21,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:21,692 INFO L87 Difference]: Start difference. First operand 28212 states and 41110 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:21,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:21,932 INFO L93 Difference]: Finished difference Result 40436 states and 58699 transitions. [2023-12-21 11:36:21,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:36:21,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-21 11:36:21,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:21,948 INFO L225 Difference]: With dead ends: 40436 [2023-12-21 11:36:21,948 INFO L226 Difference]: Without dead ends: 12254 [2023-12-21 11:36:21,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:21,973 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 44 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:21,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 217 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:21,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12254 states. [2023-12-21 11:36:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12254 to 11952. [2023-12-21 11:36:22,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11952 states, 11951 states have (on average 1.4283323571249267) internal successors, (17070), 11951 states have internal predecessors, (17070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:22,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11952 states to 11952 states and 17070 transitions. [2023-12-21 11:36:22,248 INFO L78 Accepts]: Start accepts. Automaton has 11952 states and 17070 transitions. Word has length 77 [2023-12-21 11:36:22,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:22,249 INFO L495 AbstractCegarLoop]: Abstraction has 11952 states and 17070 transitions. [2023-12-21 11:36:22,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:22,249 INFO L276 IsEmpty]: Start isEmpty. Operand 11952 states and 17070 transitions. [2023-12-21 11:36:22,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 11:36:22,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:22,250 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:36:22,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 11:36:22,250 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:22,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:22,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1454634311, now seen corresponding path program 1 times [2023-12-21 11:36:22,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:22,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621957901] [2023-12-21 11:36:22,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:22,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:22,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:22,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621957901] [2023-12-21 11:36:22,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621957901] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:36:22,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364289510] [2023-12-21 11:36:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:22,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:36:22,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:36:22,509 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) [2023-12-21 11:36:22,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 11:36:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:22,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:36:22,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:36:23,166 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:23,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:36:23,959 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:23,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364289510] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:36:23,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:36:23,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2023-12-21 11:36:23,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997694487] [2023-12-21 11:36:23,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:36:23,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 11:36:23,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:23,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 11:36:23,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2023-12-21 11:36:23,962 INFO L87 Difference]: Start difference. First operand 11952 states and 17070 transitions. Second operand has 29 states, 29 states have (on average 7.413793103448276) internal successors, (215), 28 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) [2023-12-21 11:36:29,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:29,672 INFO L93 Difference]: Finished difference Result 100841 states and 141409 transitions. [2023-12-21 11:36:29,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2023-12-21 11:36:29,672 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.413793103448276) internal successors, (215), 28 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 77 [2023-12-21 11:36:29,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:29,776 INFO L225 Difference]: With dead ends: 100841 [2023-12-21 11:36:29,776 INFO L226 Difference]: Without dead ends: 88926 [2023-12-21 11:36:29,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10115 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3881, Invalid=23509, Unknown=0, NotChecked=0, Total=27390 [2023-12-21 11:36:29,820 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 6110 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6110 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 2214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:29,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6110 Valid, 1725 Invalid, 2214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 11:36:29,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88926 states. [2023-12-21 11:36:30,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88926 to 28920. [2023-12-21 11:36:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28920 states, 28919 states have (on average 1.4308586050693315) internal successors, (41379), 28919 states have internal predecessors, (41379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:30,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28920 states to 28920 states and 41379 transitions. [2023-12-21 11:36:30,744 INFO L78 Accepts]: Start accepts. Automaton has 28920 states and 41379 transitions. Word has length 77 [2023-12-21 11:36:30,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:30,744 INFO L495 AbstractCegarLoop]: Abstraction has 28920 states and 41379 transitions. [2023-12-21 11:36:30,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.413793103448276) internal successors, (215), 28 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) [2023-12-21 11:36:30,744 INFO L276 IsEmpty]: Start isEmpty. Operand 28920 states and 41379 transitions. [2023-12-21 11:36:30,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 11:36:30,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:30,748 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:36:30,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 11:36:30,953 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,SelfDestructingSolverStorable16 [2023-12-21 11:36:30,953 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:30,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:30,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1898925238, now seen corresponding path program 1 times [2023-12-21 11:36:30,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:30,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214970154] [2023-12-21 11:36:30,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:30,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:30,997 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:30,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:30,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214970154] [2023-12-21 11:36:30,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214970154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:30,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:30,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:36:30,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461380936] [2023-12-21 11:36:30,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:30,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:36:30,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:30,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:36:30,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:30,999 INFO L87 Difference]: Start difference. First operand 28920 states and 41379 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:31,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:31,226 INFO L93 Difference]: Finished difference Result 42762 states and 61131 transitions. [2023-12-21 11:36:31,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:36:31,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-21 11:36:31,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:31,242 INFO L225 Difference]: With dead ends: 42762 [2023-12-21 11:36:31,242 INFO L226 Difference]: Without dead ends: 16691 [2023-12-21 11:36:31,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:31,257 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 35 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:31,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 195 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:31,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16691 states. [2023-12-21 11:36:31,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16691 to 16347. [2023-12-21 11:36:31,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16347 states, 16346 states have (on average 1.4019331946653615) internal successors, (22916), 16346 states have internal predecessors, (22916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:31,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16347 states to 16347 states and 22916 transitions. [2023-12-21 11:36:31,551 INFO L78 Accepts]: Start accepts. Automaton has 16347 states and 22916 transitions. Word has length 77 [2023-12-21 11:36:31,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:31,552 INFO L495 AbstractCegarLoop]: Abstraction has 16347 states and 22916 transitions. [2023-12-21 11:36:31,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:31,552 INFO L276 IsEmpty]: Start isEmpty. Operand 16347 states and 22916 transitions. [2023-12-21 11:36:31,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 11:36:31,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:31,553 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:36:31,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 11:36:31,554 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:31,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:31,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1689859897, now seen corresponding path program 1 times [2023-12-21 11:36:31,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:31,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870870392] [2023-12-21 11:36:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:31,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:33,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:33,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:33,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870870392] [2023-12-21 11:36:33,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870870392] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:36:33,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168088447] [2023-12-21 11:36:33,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:33,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:36:33,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:36:33,099 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) [2023-12-21 11:36:33,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 11:36:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:33,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 11:36:33,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:36:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:33,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:36:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:33,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168088447] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:36:33,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:36:33,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 23 [2023-12-21 11:36:33,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686495984] [2023-12-21 11:36:33,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:36:33,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 11:36:33,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:33,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 11:36:33,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2023-12-21 11:36:33,964 INFO L87 Difference]: Start difference. First operand 16347 states and 22916 transitions. Second operand has 24 states, 24 states have (on average 7.791666666666667) internal successors, (187), 23 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:35,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:35,329 INFO L93 Difference]: Finished difference Result 68082 states and 94724 transitions. [2023-12-21 11:36:35,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 11:36:35,330 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.791666666666667) internal successors, (187), 23 states have internal predecessors, (187), 0 states have call successors, (0), 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 77 [2023-12-21 11:36:35,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:35,390 INFO L225 Difference]: With dead ends: 68082 [2023-12-21 11:36:35,391 INFO L226 Difference]: Without dead ends: 54764 [2023-12-21 11:36:35,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=342, Invalid=1218, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 11:36:35,416 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 1323 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:35,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 692 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 11:36:35,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54764 states. [2023-12-21 11:36:36,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54764 to 38093. [2023-12-21 11:36:36,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38093 states, 38092 states have (on average 1.39184080646855) internal successors, (53018), 38092 states have internal predecessors, (53018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:36,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38093 states to 38093 states and 53018 transitions. [2023-12-21 11:36:36,310 INFO L78 Accepts]: Start accepts. Automaton has 38093 states and 53018 transitions. Word has length 77 [2023-12-21 11:36:36,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:36,310 INFO L495 AbstractCegarLoop]: Abstraction has 38093 states and 53018 transitions. [2023-12-21 11:36:36,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.791666666666667) internal successors, (187), 23 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:36,310 INFO L276 IsEmpty]: Start isEmpty. Operand 38093 states and 53018 transitions. [2023-12-21 11:36:36,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 11:36:36,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:36,312 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:36:36,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 11:36:36,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:36:36,517 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:36,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:36,518 INFO L85 PathProgramCache]: Analyzing trace with hash 290888472, now seen corresponding path program 1 times [2023-12-21 11:36:36,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:36,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483180617] [2023-12-21 11:36:36,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:36,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:36,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:36,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483180617] [2023-12-21 11:36:36,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483180617] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:36,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:36,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:36:36,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356469172] [2023-12-21 11:36:36,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:36,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:36:36,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:36,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:36:36,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:36,561 INFO L87 Difference]: Start difference. First operand 38093 states and 53018 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:36,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:36,907 INFO L93 Difference]: Finished difference Result 58937 states and 82045 transitions. [2023-12-21 11:36:36,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:36:36,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-21 11:36:36,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:36,934 INFO L225 Difference]: With dead ends: 58937 [2023-12-21 11:36:36,934 INFO L226 Difference]: Without dead ends: 24454 [2023-12-21 11:36:36,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:36,955 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 28 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:36,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 182 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:36,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24454 states. [2023-12-21 11:36:37,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24454 to 24452. [2023-12-21 11:36:37,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24452 states, 24451 states have (on average 1.3627663490245798) internal successors, (33321), 24451 states have internal predecessors, (33321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:37,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24452 states to 24452 states and 33321 transitions. [2023-12-21 11:36:37,394 INFO L78 Accepts]: Start accepts. Automaton has 24452 states and 33321 transitions. Word has length 77 [2023-12-21 11:36:37,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:37,394 INFO L495 AbstractCegarLoop]: Abstraction has 24452 states and 33321 transitions. [2023-12-21 11:36:37,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:37,394 INFO L276 IsEmpty]: Start isEmpty. Operand 24452 states and 33321 transitions. [2023-12-21 11:36:37,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 11:36:37,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:37,396 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:36:37,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 11:36:37,396 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:37,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:37,396 INFO L85 PathProgramCache]: Analyzing trace with hash -809290575, now seen corresponding path program 1 times [2023-12-21 11:36:37,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:37,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382788796] [2023-12-21 11:36:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:37,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:37,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:37,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382788796] [2023-12-21 11:36:37,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382788796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:37,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:37,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:36:37,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248073475] [2023-12-21 11:36:37,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:37,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:36:37,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:37,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:36:37,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:37,430 INFO L87 Difference]: Start difference. First operand 24452 states and 33321 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:38,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:38,071 INFO L93 Difference]: Finished difference Result 54907 states and 74780 transitions. [2023-12-21 11:36:38,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:36:38,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-21 11:36:38,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:38,102 INFO L225 Difference]: With dead ends: 54907 [2023-12-21 11:36:38,102 INFO L226 Difference]: Without dead ends: 33258 [2023-12-21 11:36:38,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:38,113 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 53 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:38,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 221 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:38,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33258 states. [2023-12-21 11:36:38,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33258 to 33256. [2023-12-21 11:36:38,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33256 states, 33255 states have (on average 1.3448503984363254) internal successors, (44723), 33255 states have internal predecessors, (44723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:38,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33256 states to 33256 states and 44723 transitions. [2023-12-21 11:36:38,883 INFO L78 Accepts]: Start accepts. Automaton has 33256 states and 44723 transitions. Word has length 78 [2023-12-21 11:36:38,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:38,883 INFO L495 AbstractCegarLoop]: Abstraction has 33256 states and 44723 transitions. [2023-12-21 11:36:38,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:38,883 INFO L276 IsEmpty]: Start isEmpty. Operand 33256 states and 44723 transitions. [2023-12-21 11:36:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 11:36:38,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:38,886 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:36:38,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 11:36:38,886 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:38,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:38,886 INFO L85 PathProgramCache]: Analyzing trace with hash -914614435, now seen corresponding path program 1 times [2023-12-21 11:36:38,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:38,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950402501] [2023-12-21 11:36:38,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:38,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:38,910 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:38,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:38,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950402501] [2023-12-21 11:36:38,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950402501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:38,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:38,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:36:38,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979395359] [2023-12-21 11:36:38,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:38,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:36:38,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:38,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:36:38,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:38,912 INFO L87 Difference]: Start difference. First operand 33256 states and 44723 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:39,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:39,761 INFO L93 Difference]: Finished difference Result 84012 states and 112135 transitions. [2023-12-21 11:36:39,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:36:39,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-21 11:36:39,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:39,816 INFO L225 Difference]: With dead ends: 84012 [2023-12-21 11:36:39,816 INFO L226 Difference]: Without dead ends: 52277 [2023-12-21 11:36:39,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:39,832 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 50 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:39,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 216 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:39,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52277 states. [2023-12-21 11:36:40,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52277 to 52275. [2023-12-21 11:36:40,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52275 states, 52274 states have (on average 1.310402877147339) internal successors, (68500), 52274 states have internal predecessors, (68500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:41,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52275 states to 52275 states and 68500 transitions. [2023-12-21 11:36:41,019 INFO L78 Accepts]: Start accepts. Automaton has 52275 states and 68500 transitions. Word has length 78 [2023-12-21 11:36:41,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:41,019 INFO L495 AbstractCegarLoop]: Abstraction has 52275 states and 68500 transitions. [2023-12-21 11:36:41,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:41,019 INFO L276 IsEmpty]: Start isEmpty. Operand 52275 states and 68500 transitions. [2023-12-21 11:36:41,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 11:36:41,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:41,022 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:36:41,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 11:36:41,022 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:41,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:41,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1494851121, now seen corresponding path program 1 times [2023-12-21 11:36:41,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:41,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737200098] [2023-12-21 11:36:41,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:41,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:41,048 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:41,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:41,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737200098] [2023-12-21 11:36:41,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737200098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:41,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:41,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:36:41,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090760123] [2023-12-21 11:36:41,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:41,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:36:41,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:41,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:36:41,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:41,050 INFO L87 Difference]: Start difference. First operand 52275 states and 68500 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:42,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:42,555 INFO L93 Difference]: Finished difference Result 137266 states and 178429 transitions. [2023-12-21 11:36:42,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:36:42,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-21 11:36:42,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:42,639 INFO L225 Difference]: With dead ends: 137266 [2023-12-21 11:36:42,639 INFO L226 Difference]: Without dead ends: 88260 [2023-12-21 11:36:42,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:42,668 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 47 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:42,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 222 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:42,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88260 states. [2023-12-21 11:36:44,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88260 to 88258. [2023-12-21 11:36:44,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88258 states, 88257 states have (on average 1.2744824773105816) internal successors, (112482), 88257 states have internal predecessors, (112482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:44,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88258 states to 88258 states and 112482 transitions. [2023-12-21 11:36:44,671 INFO L78 Accepts]: Start accepts. Automaton has 88258 states and 112482 transitions. Word has length 78 [2023-12-21 11:36:44,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:44,671 INFO L495 AbstractCegarLoop]: Abstraction has 88258 states and 112482 transitions. [2023-12-21 11:36:44,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:44,672 INFO L276 IsEmpty]: Start isEmpty. Operand 88258 states and 112482 transitions. [2023-12-21 11:36:44,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 11:36:44,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:44,677 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:36:44,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 11:36:44,677 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:44,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:44,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1439203861, now seen corresponding path program 1 times [2023-12-21 11:36:44,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:44,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914272145] [2023-12-21 11:36:44,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:44,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:44,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:44,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914272145] [2023-12-21 11:36:44,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914272145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:44,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:44,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:36:44,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414291966] [2023-12-21 11:36:44,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:44,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:36:44,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:44,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:36:44,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:44,703 INFO L87 Difference]: Start difference. First operand 88258 states and 112482 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:46,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:46,496 INFO L93 Difference]: Finished difference Result 131584 states and 166849 transitions. [2023-12-21 11:36:46,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:36:46,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-21 11:36:46,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:46,584 INFO L225 Difference]: With dead ends: 131584 [2023-12-21 11:36:46,585 INFO L226 Difference]: Without dead ends: 86914 [2023-12-21 11:36:46,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:46,611 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 47 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 268 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 [2023-12-21 11:36:46,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 268 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:46,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86914 states. [2023-12-21 11:36:48,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86914 to 83907. [2023-12-21 11:36:48,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83907 states, 83906 states have (on average 1.252258479727314) internal successors, (105072), 83906 states have internal predecessors, (105072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:48,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83907 states to 83907 states and 105072 transitions. [2023-12-21 11:36:48,746 INFO L78 Accepts]: Start accepts. Automaton has 83907 states and 105072 transitions. Word has length 78 [2023-12-21 11:36:48,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:48,746 INFO L495 AbstractCegarLoop]: Abstraction has 83907 states and 105072 transitions. [2023-12-21 11:36:48,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:48,746 INFO L276 IsEmpty]: Start isEmpty. Operand 83907 states and 105072 transitions. [2023-12-21 11:36:48,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 11:36:48,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:48,751 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:36:48,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 11:36:48,752 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:48,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:48,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1259051597, now seen corresponding path program 1 times [2023-12-21 11:36:48,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:48,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763609279] [2023-12-21 11:36:48,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:48,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:48,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:48,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:48,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763609279] [2023-12-21 11:36:48,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763609279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:36:48,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:36:48,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:36:48,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143725089] [2023-12-21 11:36:48,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:36:48,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:36:48,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:48,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:36:48,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:48,780 INFO L87 Difference]: Start difference. First operand 83907 states and 105072 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:50,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:50,150 INFO L93 Difference]: Finished difference Result 118932 states and 148511 transitions. [2023-12-21 11:36:50,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:36:50,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-21 11:36:50,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:50,275 INFO L225 Difference]: With dead ends: 118932 [2023-12-21 11:36:50,275 INFO L226 Difference]: Without dead ends: 70925 [2023-12-21 11:36:50,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:36:50,301 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 50 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 259 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 [2023-12-21 11:36:50,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 259 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:36:50,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70925 states. [2023-12-21 11:36:52,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70925 to 67096. [2023-12-21 11:36:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67096 states, 67095 states have (on average 1.2381846635367761) internal successors, (83076), 67095 states have internal predecessors, (83076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:52,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67096 states to 67096 states and 83076 transitions. [2023-12-21 11:36:52,158 INFO L78 Accepts]: Start accepts. Automaton has 67096 states and 83076 transitions. Word has length 78 [2023-12-21 11:36:52,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:52,158 INFO L495 AbstractCegarLoop]: Abstraction has 67096 states and 83076 transitions. [2023-12-21 11:36:52,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:52,158 INFO L276 IsEmpty]: Start isEmpty. Operand 67096 states and 83076 transitions. [2023-12-21 11:36:52,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 11:36:52,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:52,162 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:36:52,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 11:36:52,162 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:52,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:52,162 INFO L85 PathProgramCache]: Analyzing trace with hash -801187947, now seen corresponding path program 1 times [2023-12-21 11:36:52,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:52,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922042748] [2023-12-21 11:36:52,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:52,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:52,409 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:52,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:52,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922042748] [2023-12-21 11:36:52,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922042748] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:36:52,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452397494] [2023-12-21 11:36:52,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:52,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:36:52,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:36:52,410 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) [2023-12-21 11:36:52,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 11:36:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:52,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:36:52,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:36:52,849 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:52,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:36:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:36:53,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452397494] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:36:53,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:36:53,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 25 [2023-12-21 11:36:53,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908637107] [2023-12-21 11:36:53,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:36:53,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 11:36:53,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:53,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 11:36:53,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2023-12-21 11:36:53,849 INFO L87 Difference]: Start difference. First operand 67096 states and 83076 transitions. Second operand has 26 states, 26 states have (on average 7.846153846153846) internal successors, (204), 25 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:36:56,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:56,696 INFO L93 Difference]: Finished difference Result 191635 states and 236554 transitions. [2023-12-21 11:36:56,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 11:36:56,697 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.846153846153846) internal successors, (204), 25 states have internal predecessors, (204), 0 states have call successors, (0), 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 78 [2023-12-21 11:36:56,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:56,826 INFO L225 Difference]: With dead ends: 191635 [2023-12-21 11:36:56,826 INFO L226 Difference]: Without dead ends: 125338 [2023-12-21 11:36:56,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=304, Invalid=1178, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 11:36:56,856 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 669 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:56,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 961 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:36:57,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125338 states. [2023-12-21 11:37:00,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125338 to 120760. [2023-12-21 11:37:00,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120760 states, 120759 states have (on average 1.2319827093632774) internal successors, (148773), 120759 states have internal predecessors, (148773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:37:00,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120760 states to 120760 states and 148773 transitions. [2023-12-21 11:37:00,314 INFO L78 Accepts]: Start accepts. Automaton has 120760 states and 148773 transitions. Word has length 78 [2023-12-21 11:37:00,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:37:00,315 INFO L495 AbstractCegarLoop]: Abstraction has 120760 states and 148773 transitions. [2023-12-21 11:37:00,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.846153846153846) internal successors, (204), 25 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:37:00,315 INFO L276 IsEmpty]: Start isEmpty. Operand 120760 states and 148773 transitions. [2023-12-21 11:37:00,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 11:37:00,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:37:00,319 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:37:00,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 11:37:00,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-21 11:37:00,519 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:37:00,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:37:00,520 INFO L85 PathProgramCache]: Analyzing trace with hash 226438197, now seen corresponding path program 1 times [2023-12-21 11:37:00,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:37:00,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846015374] [2023-12-21 11:37:00,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:37:00,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:37:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:01,230 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:37:01,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:37:01,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846015374] [2023-12-21 11:37:01,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846015374] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:37:01,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145708631] [2023-12-21 11:37:01,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:37:01,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:37:01,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:37:01,232 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) [2023-12-21 11:37:01,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 11:37:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:01,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 11:37:01,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:37:02,057 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:37:02,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:37:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:37:02,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145708631] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:37:02,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:37:02,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-12-21 11:37:02,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644027020] [2023-12-21 11:37:02,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:37:02,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 11:37:02,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:37:02,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 11:37:02,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2023-12-21 11:37:02,736 INFO L87 Difference]: Start difference. First operand 120760 states and 148773 transitions. Second operand has 32 states, 32 states have (on average 6.5) internal successors, (208), 31 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:37:26,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:37:26,164 INFO L93 Difference]: Finished difference Result 700124 states and 847819 transitions. [2023-12-21 11:37:26,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2023-12-21 11:37:26,165 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.5) internal successors, (208), 31 states have internal predecessors, (208), 0 states have call successors, (0), 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 79 [2023-12-21 11:37:26,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:37:26,977 INFO L225 Difference]: With dead ends: 700124 [2023-12-21 11:37:26,977 INFO L226 Difference]: Without dead ends: 580820 [2023-12-21 11:37:27,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18011 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=6778, Invalid=38378, Unknown=0, NotChecked=0, Total=45156 [2023-12-21 11:37:27,089 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 5959 mSDsluCounter, 3568 mSDsCounter, 0 mSdLazyCounter, 3314 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5959 SdHoareTripleChecker+Valid, 3722 SdHoareTripleChecker+Invalid, 3439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:37:27,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5959 Valid, 3722 Invalid, 3439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3314 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 11:37:27,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580820 states. [2023-12-21 11:37:34,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580820 to 180921. [2023-12-21 11:37:34,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180921 states, 180920 states have (on average 1.2208766305549414) internal successors, (220881), 180920 states have internal predecessors, (220881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:37:35,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180921 states to 180921 states and 220881 transitions. [2023-12-21 11:37:35,020 INFO L78 Accepts]: Start accepts. Automaton has 180921 states and 220881 transitions. Word has length 79 [2023-12-21 11:37:35,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:37:35,020 INFO L495 AbstractCegarLoop]: Abstraction has 180921 states and 220881 transitions. [2023-12-21 11:37:35,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.5) internal successors, (208), 31 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:37:35,020 INFO L276 IsEmpty]: Start isEmpty. Operand 180921 states and 220881 transitions. [2023-12-21 11:37:35,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 11:37:35,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:37:35,024 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:37:35,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 11:37:35,225 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,SelfDestructingSolverStorable26 [2023-12-21 11:37:35,226 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:37:35,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:37:35,226 INFO L85 PathProgramCache]: Analyzing trace with hash -960429663, now seen corresponding path program 1 times [2023-12-21 11:37:35,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:37:35,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943450631] [2023-12-21 11:37:35,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:37:35,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:37:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:37:35,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:37:35,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943450631] [2023-12-21 11:37:35,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943450631] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:37:35,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320310246] [2023-12-21 11:37:35,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:37:35,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:37:35,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:37:35,781 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) [2023-12-21 11:37:35,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 11:37:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:35,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 11:37:35,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:37:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:37:36,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:37:38,457 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:37:38,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320310246] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:37:38,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:37:38,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14] total 32 [2023-12-21 11:37:38,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610674080] [2023-12-21 11:37:38,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:37:38,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 11:37:38,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:37:38,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 11:37:38,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 11:37:38,459 INFO L87 Difference]: Start difference. First operand 180921 states and 220881 transitions. Second operand has 33 states, 33 states have (on average 6.7272727272727275) internal successors, (222), 32 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:37:55,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:37:55,690 INFO L93 Difference]: Finished difference Result 364146 states and 444377 transitions. [2023-12-21 11:37:55,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2023-12-21 11:37:55,690 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.7272727272727275) internal successors, (222), 32 states have internal predecessors, (222), 0 states have call successors, (0), 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 79 [2023-12-21 11:37:55,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:37:56,037 INFO L225 Difference]: With dead ends: 364146 [2023-12-21 11:37:56,038 INFO L226 Difference]: Without dead ends: 258930 [2023-12-21 11:37:56,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9940 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=5802, Invalid=23610, Unknown=0, NotChecked=0, Total=29412 [2023-12-21 11:37:56,140 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 4349 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4349 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:37:56,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4349 Valid, 1812 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1497 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 11:37:56,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258930 states. [2023-12-21 11:38:04,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258930 to 222337. [2023-12-21 11:38:04,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222337 states, 222336 states have (on average 1.2168609671848014) internal successors, (270552), 222336 states have internal predecessors, (270552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:04,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222337 states to 222337 states and 270552 transitions. [2023-12-21 11:38:04,902 INFO L78 Accepts]: Start accepts. Automaton has 222337 states and 270552 transitions. Word has length 79 [2023-12-21 11:38:04,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:38:04,902 INFO L495 AbstractCegarLoop]: Abstraction has 222337 states and 270552 transitions. [2023-12-21 11:38:04,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.7272727272727275) internal successors, (222), 32 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:04,902 INFO L276 IsEmpty]: Start isEmpty. Operand 222337 states and 270552 transitions. [2023-12-21 11:38:04,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-21 11:38:04,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:38:04,937 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:38:04,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-21 11:38:05,137 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,SelfDestructingSolverStorable27 [2023-12-21 11:38:05,137 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:38:05,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:38:05,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1505405821, now seen corresponding path program 1 times [2023-12-21 11:38:05,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:38:05,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520967525] [2023-12-21 11:38:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:38:05,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:38:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:38:05,173 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 11:38:05,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:38:05,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520967525] [2023-12-21 11:38:05,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520967525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:38:05,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:38:05,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:38:05,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188563546] [2023-12-21 11:38:05,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:38:05,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:38:05,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:38:05,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:38:05,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:05,174 INFO L87 Difference]: Start difference. First operand 222337 states and 270552 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:38:13,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:38:13,304 INFO L93 Difference]: Finished difference Result 467681 states and 568771 transitions. [2023-12-21 11:38:13,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:38:13,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 128 [2023-12-21 11:38:13,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:38:13,632 INFO L225 Difference]: With dead ends: 467681 [2023-12-21 11:38:13,632 INFO L226 Difference]: Without dead ends: 250991 [2023-12-21 11:38:13,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:38:13,699 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 53 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:38:13,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 211 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:38:13,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250991 states.