/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 17:57:04,318 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 17:57:04,377 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 17:57:04,380 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 17:57:04,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 17:57:04,394 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 17:57:04,394 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 17:57:04,394 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 17:57:04,395 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 17:57:04,395 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 17:57:04,395 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 17:57:04,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 17:57:04,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 17:57:04,396 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 17:57:04,396 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 17:57:04,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 17:57:04,397 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 17:57:04,397 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 17:57:04,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 17:57:04,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 17:57:04,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 17:57:04,401 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 17:57:04,401 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 17:57:04,402 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 17:57:04,404 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 17:57:04,404 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 17:57:04,404 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 17:57:04,405 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 17:57:04,406 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 17:57:04,406 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 17:57:04,406 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 17:57:04,406 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 17:57:04,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:57:04,406 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 17:57:04,406 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 17:57:04,407 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 17:57:04,407 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 17:57:04,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 17:57:04,407 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 17:57:04,407 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 17:57:04,407 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 17:57:04,407 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 17:57:04,407 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 17:57:04,408 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 17:57:04,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 17:57:04,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 17:57:04,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 17:57:04,619 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 17:57:04,619 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 17:57:04,620 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c [2023-12-15 17:57:05,725 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 17:57:06,049 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 17:57:06,050 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c [2023-12-15 17:57:06,075 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0db44e4a9/2bc8e85da5dd40cfb2915032ce2a3747/FLAG92c6a89f1 [2023-12-15 17:57:06,088 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0db44e4a9/2bc8e85da5dd40cfb2915032ce2a3747 [2023-12-15 17:57:06,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 17:57:06,092 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 17:57:06,093 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 17:57:06,094 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 17:57:06,097 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 17:57:06,097 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:57:06" (1/1) ... [2023-12-15 17:57:06,098 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6009ad3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:57:06, skipping insertion in model container [2023-12-15 17:57:06,098 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:57:06" (1/1) ... [2023-12-15 17:57:06,191 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 17:57:06,475 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c[15482,15495] [2023-12-15 17:57:06,506 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c[18299,18312] [2023-12-15 17:57:07,046 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:57:07,054 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 17:57:07,092 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c[15482,15495] [2023-12-15 17:57:07,096 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c[18299,18312] [2023-12-15 17:57:07,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:57:07,386 INFO L206 MainTranslator]: Completed translation [2023-12-15 17:57:07,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:57:07 WrapperNode [2023-12-15 17:57:07,388 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 17:57:07,389 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 17:57:07,389 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 17:57:07,389 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 17:57:07,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:57:07" (1/1) ... [2023-12-15 17:57:07,428 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:57:07" (1/1) ... [2023-12-15 17:57:07,657 INFO L138 Inliner]: procedures = 37, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5153 [2023-12-15 17:57:07,657 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 17:57:07,658 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 17:57:07,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 17:57:07,658 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 17:57:07,665 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:57:07" (1/1) ... [2023-12-15 17:57:07,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:57:07" (1/1) ... [2023-12-15 17:57:07,699 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:57:07" (1/1) ... [2023-12-15 17:57:07,893 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]. [2023-12-15 17:57:07,894 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:57:07" (1/1) ... [2023-12-15 17:57:07,894 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:57:07" (1/1) ... [2023-12-15 17:57:08,018 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:57:07" (1/1) ... [2023-12-15 17:57:08,041 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:57:07" (1/1) ... [2023-12-15 17:57:08,062 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:57:07" (1/1) ... [2023-12-15 17:57:08,114 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:57:07" (1/1) ... [2023-12-15 17:57:08,155 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 17:57:08,157 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 17:57:08,157 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 17:57:08,157 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 17:57:08,158 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:57:07" (1/1) ... [2023-12-15 17:57:08,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:57:08,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:57:08,193 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) [2023-12-15 17:57:08,200 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 [2023-12-15 17:57:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 17:57:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 17:57:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 17:57:08,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 17:57:08,299 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 17:57:08,301 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 17:57:11,327 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 17:57:11,366 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 17:57:11,366 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-15 17:57:11,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:57:11 BoogieIcfgContainer [2023-12-15 17:57:11,366 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 17:57:11,368 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 17:57:11,368 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 17:57:11,370 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 17:57:11,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:57:06" (1/3) ... [2023-12-15 17:57:11,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1667e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:57:11, skipping insertion in model container [2023-12-15 17:57:11,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:57:07" (2/3) ... [2023-12-15 17:57:11,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1667e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:57:11, skipping insertion in model container [2023-12-15 17:57:11,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:57:11" (3/3) ... [2023-12-15 17:57:11,372 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c [2023-12-15 17:57:11,384 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 17:57:11,384 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 17:57:11,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 17:57:11,429 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;@7ca991f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 17:57:11,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 17:57:11,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:11,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-15 17:57:11,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:11,441 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] [2023-12-15 17:57:11,442 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:11,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:11,446 INFO L85 PathProgramCache]: Analyzing trace with hash -304709040, now seen corresponding path program 1 times [2023-12-15 17:57:11,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:11,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131944657] [2023-12-15 17:57:11,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:11,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:11,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:11,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131944657] [2023-12-15 17:57:11,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131944657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:11,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:11,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:57:11,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447608333] [2023-12-15 17:57:11,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:11,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 17:57:11,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:11,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 17:57:11,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 17:57:11,633 INFO L87 Difference]: Start difference. First operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:11,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:11,695 INFO L93 Difference]: Finished difference Result 1654 states and 3254 transitions. [2023-12-15 17:57:11,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 17:57:11,705 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-15 17:57:11,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:11,718 INFO L225 Difference]: With dead ends: 1654 [2023-12-15 17:57:11,718 INFO L226 Difference]: Without dead ends: 845 [2023-12-15 17:57:11,722 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 [2023-12-15 17:57:11,724 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:57:11,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1599 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:57:11,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-15 17:57:11,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-12-15 17:57:11,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.896797153024911) internal successors, (1599), 844 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1599 transitions. [2023-12-15 17:57:11,775 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1599 transitions. Word has length 23 [2023-12-15 17:57:11,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:11,776 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1599 transitions. [2023-12-15 17:57:11,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:11,776 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1599 transitions. [2023-12-15 17:57:11,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-15 17:57:11,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:11,777 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] [2023-12-15 17:57:11,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 17:57:11,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:11,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:11,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1993652782, now seen corresponding path program 1 times [2023-12-15 17:57:11,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:11,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082926608] [2023-12-15 17:57:11,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:11,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:12,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:12,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:12,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082926608] [2023-12-15 17:57:12,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082926608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:12,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:12,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 17:57:12,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142428291] [2023-12-15 17:57:12,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:12,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:57:12,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:12,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:57:12,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:57:12,028 INFO L87 Difference]: Start difference. First operand 845 states and 1599 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:12,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:12,105 INFO L93 Difference]: Finished difference Result 895 states and 1678 transitions. [2023-12-15 17:57:12,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:57:12,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-15 17:57:12,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:12,108 INFO L225 Difference]: With dead ends: 895 [2023-12-15 17:57:12,109 INFO L226 Difference]: Without dead ends: 845 [2023-12-15 17:57:12,109 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 [2023-12-15 17:57:12,110 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 0 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:57:12,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4744 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:57:12,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-15 17:57:12,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-12-15 17:57:12,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.849347568208778) internal successors, (1559), 844 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:12,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1559 transitions. [2023-12-15 17:57:12,127 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1559 transitions. Word has length 23 [2023-12-15 17:57:12,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:12,127 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1559 transitions. [2023-12-15 17:57:12,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:12,128 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1559 transitions. [2023-12-15 17:57:12,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-15 17:57:12,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:12,128 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] [2023-12-15 17:57:12,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 17:57:12,128 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:12,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:12,129 INFO L85 PathProgramCache]: Analyzing trace with hash 863507850, now seen corresponding path program 1 times [2023-12-15 17:57:12,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:12,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378868437] [2023-12-15 17:57:12,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:12,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:12,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:12,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:12,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378868437] [2023-12-15 17:57:12,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378868437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:12,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:12,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:57:12,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082691069] [2023-12-15 17:57:12,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:12,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:57:12,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:12,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:57:12,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:57:12,197 INFO L87 Difference]: Start difference. First operand 845 states and 1559 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:15,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:15,082 INFO L93 Difference]: Finished difference Result 2349 states and 4432 transitions. [2023-12-15 17:57:15,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:57:15,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-15 17:57:15,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:15,089 INFO L225 Difference]: With dead ends: 2349 [2023-12-15 17:57:15,090 INFO L226 Difference]: Without dead ends: 1596 [2023-12-15 17:57:15,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:57:15,092 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 966 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:57:15,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 232 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 17:57:15,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2023-12-15 17:57:15,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1596. [2023-12-15 17:57:15,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1594 states have (on average 1.8180677540777916) internal successors, (2898), 1595 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:15,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2898 transitions. [2023-12-15 17:57:15,121 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2898 transitions. Word has length 23 [2023-12-15 17:57:15,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:15,121 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 2898 transitions. [2023-12-15 17:57:15,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:15,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2898 transitions. [2023-12-15 17:57:15,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-15 17:57:15,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:15,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:15,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 17:57:15,124 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:15,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:15,124 INFO L85 PathProgramCache]: Analyzing trace with hash -399525676, now seen corresponding path program 1 times [2023-12-15 17:57:15,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:15,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963444655] [2023-12-15 17:57:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:15,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:15,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:15,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:15,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963444655] [2023-12-15 17:57:15,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963444655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:15,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:15,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 17:57:15,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334487027] [2023-12-15 17:57:15,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:15,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 17:57:15,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:15,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 17:57:15,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:57:15,270 INFO L87 Difference]: Start difference. First operand 1596 states and 2898 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:15,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:15,532 INFO L93 Difference]: Finished difference Result 2160 states and 3810 transitions. [2023-12-15 17:57:15,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 17:57:15,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2023-12-15 17:57:15,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:15,541 INFO L225 Difference]: With dead ends: 2160 [2023-12-15 17:57:15,541 INFO L226 Difference]: Without dead ends: 2113 [2023-12-15 17:57:15,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:57:15,543 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 9675 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9675 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:57:15,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9675 Valid, 3624 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:57:15,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2023-12-15 17:57:15,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 1641. [2023-12-15 17:57:15,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1639 states have (on average 1.8126906650396584) internal successors, (2971), 1640 states have internal predecessors, (2971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:15,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2971 transitions. [2023-12-15 17:57:15,584 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2971 transitions. Word has length 62 [2023-12-15 17:57:15,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:15,585 INFO L495 AbstractCegarLoop]: Abstraction has 1641 states and 2971 transitions. [2023-12-15 17:57:15,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:15,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2971 transitions. [2023-12-15 17:57:15,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-15 17:57:15,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:15,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:15,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 17:57:15,587 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:15,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:15,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1824916700, now seen corresponding path program 1 times [2023-12-15 17:57:15,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:15,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134979715] [2023-12-15 17:57:15,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:15,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:15,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:15,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:15,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134979715] [2023-12-15 17:57:15,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134979715] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:15,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:15,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:57:15,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86037226] [2023-12-15 17:57:15,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:15,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:57:15,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:15,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:57:15,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:57:15,656 INFO L87 Difference]: Start difference. First operand 1641 states and 2971 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:15,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:15,689 INFO L93 Difference]: Finished difference Result 1814 states and 3250 transitions. [2023-12-15 17:57:15,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:57:15,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-15 17:57:15,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:15,697 INFO L225 Difference]: With dead ends: 1814 [2023-12-15 17:57:15,697 INFO L226 Difference]: Without dead ends: 1722 [2023-12-15 17:57:15,698 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 [2023-12-15 17:57:15,698 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 1488 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:57:15,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1624 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:57:15,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2023-12-15 17:57:15,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2023-12-15 17:57:15,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.8026775320139696) internal successors, (3097), 1719 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:15,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 3097 transitions. [2023-12-15 17:57:15,735 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 3097 transitions. Word has length 64 [2023-12-15 17:57:15,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:15,736 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 3097 transitions. [2023-12-15 17:57:15,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:15,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 3097 transitions. [2023-12-15 17:57:15,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-15 17:57:15,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:15,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:15,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 17:57:15,779 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:15,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:15,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1822771748, now seen corresponding path program 1 times [2023-12-15 17:57:15,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:15,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742257908] [2023-12-15 17:57:15,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:15,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:16,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:16,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742257908] [2023-12-15 17:57:16,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742257908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:16,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:16,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 17:57:16,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281752646] [2023-12-15 17:57:16,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:16,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 17:57:16,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:16,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 17:57:16,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:57:16,052 INFO L87 Difference]: Start difference. First operand 1720 states and 3097 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:16,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:16,262 INFO L93 Difference]: Finished difference Result 1893 states and 3373 transitions. [2023-12-15 17:57:16,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 17:57:16,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-15 17:57:16,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:16,268 INFO L225 Difference]: With dead ends: 1893 [2023-12-15 17:57:16,268 INFO L226 Difference]: Without dead ends: 1722 [2023-12-15 17:57:16,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-15 17:57:16,269 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 1530 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:57:16,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 1983 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:57:16,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2023-12-15 17:57:16,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2023-12-15 17:57:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.8015133876600697) internal successors, (3095), 1719 states have internal predecessors, (3095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:16,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 3095 transitions. [2023-12-15 17:57:16,299 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 3095 transitions. Word has length 64 [2023-12-15 17:57:16,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:16,300 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 3095 transitions. [2023-12-15 17:57:16,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:16,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 3095 transitions. [2023-12-15 17:57:16,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-15 17:57:16,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:16,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:16,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 17:57:16,301 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:16,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:16,301 INFO L85 PathProgramCache]: Analyzing trace with hash -800021079, now seen corresponding path program 1 times [2023-12-15 17:57:16,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:16,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416123685] [2023-12-15 17:57:16,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:16,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:16,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:16,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:16,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416123685] [2023-12-15 17:57:16,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416123685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:16,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:16,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 17:57:16,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024008726] [2023-12-15 17:57:16,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:16,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:57:16,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:16,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:57:16,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:57:16,478 INFO L87 Difference]: Start difference. First operand 1720 states and 3095 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:16,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:16,516 INFO L93 Difference]: Finished difference Result 1728 states and 3104 transitions. [2023-12-15 17:57:16,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:57:16,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-12-15 17:57:16,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:16,523 INFO L225 Difference]: With dead ends: 1728 [2023-12-15 17:57:16,523 INFO L226 Difference]: Without dead ends: 1726 [2023-12-15 17:57:16,523 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 [2023-12-15 17:57:16,524 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4657 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:57:16,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4657 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:57:16,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2023-12-15 17:57:16,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1724. [2023-12-15 17:57:16,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1722 states have (on average 1.7990708478513358) internal successors, (3098), 1723 states have internal predecessors, (3098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 3098 transitions. [2023-12-15 17:57:16,553 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 3098 transitions. Word has length 65 [2023-12-15 17:57:16,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:16,554 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 3098 transitions. [2023-12-15 17:57:16,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:16,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 3098 transitions. [2023-12-15 17:57:16,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 17:57:16,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:16,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:16,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 17:57:16,555 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:16,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:16,555 INFO L85 PathProgramCache]: Analyzing trace with hash 306458780, now seen corresponding path program 1 times [2023-12-15 17:57:16,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:16,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443600729] [2023-12-15 17:57:16,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:16,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:16,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:16,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443600729] [2023-12-15 17:57:16,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443600729] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:16,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:16,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:57:16,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020120711] [2023-12-15 17:57:16,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:16,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:57:16,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:16,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:57:16,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:57:16,604 INFO L87 Difference]: Start difference. First operand 1724 states and 3098 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:16,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:16,638 INFO L93 Difference]: Finished difference Result 1910 states and 3391 transitions. [2023-12-15 17:57:16,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:57:16,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-15 17:57:16,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:16,644 INFO L225 Difference]: With dead ends: 1910 [2023-12-15 17:57:16,644 INFO L226 Difference]: Without dead ends: 1814 [2023-12-15 17:57:16,645 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 [2023-12-15 17:57:16,645 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1504 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1692 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 [2023-12-15 17:57:16,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1692 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:57:16,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2023-12-15 17:57:16,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1812. [2023-12-15 17:57:16,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1810 states have (on average 1.787292817679558) internal successors, (3235), 1811 states have internal predecessors, (3235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:16,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 3235 transitions. [2023-12-15 17:57:16,684 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 3235 transitions. Word has length 66 [2023-12-15 17:57:16,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:16,684 INFO L495 AbstractCegarLoop]: Abstraction has 1812 states and 3235 transitions. [2023-12-15 17:57:16,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:16,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 3235 transitions. [2023-12-15 17:57:16,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 17:57:16,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:16,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:16,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 17:57:16,685 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:16,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:16,686 INFO L85 PathProgramCache]: Analyzing trace with hash -103927908, now seen corresponding path program 1 times [2023-12-15 17:57:16,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:16,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815749222] [2023-12-15 17:57:16,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:16,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:16,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:16,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:16,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815749222] [2023-12-15 17:57:16,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815749222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:16,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:16,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:57:16,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167031765] [2023-12-15 17:57:16,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:16,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:57:16,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:16,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:57:16,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:57:16,728 INFO L87 Difference]: Start difference. First operand 1812 states and 3235 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:16,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:16,763 INFO L93 Difference]: Finished difference Result 2310 states and 4015 transitions. [2023-12-15 17:57:16,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:57:16,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-15 17:57:16,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:16,771 INFO L225 Difference]: With dead ends: 2310 [2023-12-15 17:57:16,771 INFO L226 Difference]: Without dead ends: 2049 [2023-12-15 17:57:16,772 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 [2023-12-15 17:57:16,772 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 1502 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1698 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 [2023-12-15 17:57:16,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:57:16,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2023-12-15 17:57:16,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 2047. [2023-12-15 17:57:16,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 2045 states have (on average 1.758924205378973) internal successors, (3597), 2046 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:16,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 3597 transitions. [2023-12-15 17:57:16,818 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 3597 transitions. Word has length 66 [2023-12-15 17:57:16,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:16,818 INFO L495 AbstractCegarLoop]: Abstraction has 2047 states and 3597 transitions. [2023-12-15 17:57:16,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:16,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 3597 transitions. [2023-12-15 17:57:16,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 17:57:16,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:16,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:16,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 17:57:16,819 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:16,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:16,820 INFO L85 PathProgramCache]: Analyzing trace with hash -332567140, now seen corresponding path program 1 times [2023-12-15 17:57:16,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:16,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859388389] [2023-12-15 17:57:16,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:16,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:16,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:16,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859388389] [2023-12-15 17:57:16,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859388389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:16,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:16,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:57:16,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042410220] [2023-12-15 17:57:16,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:16,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:57:16,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:16,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:57:16,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:57:16,863 INFO L87 Difference]: Start difference. First operand 2047 states and 3597 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:16,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:16,902 INFO L93 Difference]: Finished difference Result 2991 states and 5059 transitions. [2023-12-15 17:57:16,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:57:16,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-15 17:57:16,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:16,910 INFO L225 Difference]: With dead ends: 2991 [2023-12-15 17:57:16,910 INFO L226 Difference]: Without dead ends: 2495 [2023-12-15 17:57:16,911 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 [2023-12-15 17:57:16,912 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1498 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1694 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 [2023-12-15 17:57:16,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1694 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:57:16,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2023-12-15 17:57:16,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2493. [2023-12-15 17:57:16,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 2491 states have (on average 1.7153753512645524) internal successors, (4273), 2492 states have internal predecessors, (4273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 4273 transitions. [2023-12-15 17:57:16,966 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 4273 transitions. Word has length 66 [2023-12-15 17:57:16,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:16,966 INFO L495 AbstractCegarLoop]: Abstraction has 2493 states and 4273 transitions. [2023-12-15 17:57:16,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:16,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 4273 transitions. [2023-12-15 17:57:16,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 17:57:16,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:16,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:16,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 17:57:16,971 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:16,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:16,971 INFO L85 PathProgramCache]: Analyzing trace with hash -958223204, now seen corresponding path program 1 times [2023-12-15 17:57:16,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:16,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612602849] [2023-12-15 17:57:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:16,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:17,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:17,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:17,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612602849] [2023-12-15 17:57:17,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612602849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:17,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:17,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:57:17,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071330790] [2023-12-15 17:57:17,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:17,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:57:17,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:17,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:57:17,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:57:17,022 INFO L87 Difference]: Start difference. First operand 2493 states and 4273 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:17,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:17,075 INFO L93 Difference]: Finished difference Result 4281 states and 7003 transitions. [2023-12-15 17:57:17,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:57:17,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-15 17:57:17,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:17,086 INFO L225 Difference]: With dead ends: 4281 [2023-12-15 17:57:17,086 INFO L226 Difference]: Without dead ends: 3339 [2023-12-15 17:57:17,088 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 [2023-12-15 17:57:17,089 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1496 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1696 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 [2023-12-15 17:57:17,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1696 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:57:17,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2023-12-15 17:57:17,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3337. [2023-12-15 17:57:17,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3337 states, 3335 states have (on average 1.657871064467766) internal successors, (5529), 3336 states have internal predecessors, (5529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:17,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3337 states to 3337 states and 5529 transitions. [2023-12-15 17:57:17,190 INFO L78 Accepts]: Start accepts. Automaton has 3337 states and 5529 transitions. Word has length 66 [2023-12-15 17:57:17,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:17,190 INFO L495 AbstractCegarLoop]: Abstraction has 3337 states and 5529 transitions. [2023-12-15 17:57:17,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:17,191 INFO L276 IsEmpty]: Start isEmpty. Operand 3337 states and 5529 transitions. [2023-12-15 17:57:17,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 17:57:17,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:17,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:17,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 17:57:17,192 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:17,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:17,192 INFO L85 PathProgramCache]: Analyzing trace with hash -69489764, now seen corresponding path program 1 times [2023-12-15 17:57:17,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:17,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38266339] [2023-12-15 17:57:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:17,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:17,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:17,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:17,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38266339] [2023-12-15 17:57:17,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38266339] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:17,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:17,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:57:17,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134938781] [2023-12-15 17:57:17,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:17,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:57:17,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:17,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:57:17,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:57:17,235 INFO L87 Difference]: Start difference. First operand 3337 states and 5529 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:17,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:17,304 INFO L93 Difference]: Finished difference Result 6717 states and 10603 transitions. [2023-12-15 17:57:17,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:57:17,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-15 17:57:17,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:17,329 INFO L225 Difference]: With dead ends: 6717 [2023-12-15 17:57:17,330 INFO L226 Difference]: Without dead ends: 4931 [2023-12-15 17:57:17,334 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 [2023-12-15 17:57:17,334 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1494 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1698 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 [2023-12-15 17:57:17,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:57:17,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2023-12-15 17:57:17,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 4929. [2023-12-15 17:57:17,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4929 states, 4927 states have (on average 1.5930586563831945) internal successors, (7849), 4928 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:17,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4929 states to 4929 states and 7849 transitions. [2023-12-15 17:57:17,455 INFO L78 Accepts]: Start accepts. Automaton has 4929 states and 7849 transitions. Word has length 66 [2023-12-15 17:57:17,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:17,455 INFO L495 AbstractCegarLoop]: Abstraction has 4929 states and 7849 transitions. [2023-12-15 17:57:17,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:17,456 INFO L276 IsEmpty]: Start isEmpty. Operand 4929 states and 7849 transitions. [2023-12-15 17:57:17,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 17:57:17,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:17,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:17,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 17:57:17,457 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:17,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:17,457 INFO L85 PathProgramCache]: Analyzing trace with hash -372511076, now seen corresponding path program 1 times [2023-12-15 17:57:17,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:17,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892137678] [2023-12-15 17:57:17,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:17,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:17,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:17,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:17,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892137678] [2023-12-15 17:57:17,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892137678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:17,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:17,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:57:17,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813192439] [2023-12-15 17:57:17,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:17,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:57:17,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:17,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:57:17,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:57:17,506 INFO L87 Difference]: Start difference. First operand 4929 states and 7849 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:17,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:17,656 INFO L93 Difference]: Finished difference Result 11301 states and 17227 transitions. [2023-12-15 17:57:17,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:57:17,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-15 17:57:17,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:17,669 INFO L225 Difference]: With dead ends: 11301 [2023-12-15 17:57:17,670 INFO L226 Difference]: Without dead ends: 7923 [2023-12-15 17:57:17,674 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 [2023-12-15 17:57:17,676 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1500 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1700 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 [2023-12-15 17:57:17,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1700 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:57:17,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7923 states. [2023-12-15 17:57:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7923 to 7921. [2023-12-15 17:57:17,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7921 states, 7919 states have (on average 1.5286020962242708) internal successors, (12105), 7920 states have internal predecessors, (12105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:17,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7921 states to 7921 states and 12105 transitions. [2023-12-15 17:57:17,863 INFO L78 Accepts]: Start accepts. Automaton has 7921 states and 12105 transitions. Word has length 66 [2023-12-15 17:57:17,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:17,863 INFO L495 AbstractCegarLoop]: Abstraction has 7921 states and 12105 transitions. [2023-12-15 17:57:17,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:17,864 INFO L276 IsEmpty]: Start isEmpty. Operand 7921 states and 12105 transitions. [2023-12-15 17:57:17,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 17:57:17,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:17,866 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:17,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 17:57:17,866 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:17,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:17,867 INFO L85 PathProgramCache]: Analyzing trace with hash -889914948, now seen corresponding path program 1 times [2023-12-15 17:57:17,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:17,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594199901] [2023-12-15 17:57:17,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:17,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:18,011 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:57:18,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:18,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594199901] [2023-12-15 17:57:18,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594199901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:18,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:18,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 17:57:18,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955164738] [2023-12-15 17:57:18,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:18,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 17:57:18,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:18,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 17:57:18,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:57:18,012 INFO L87 Difference]: Start difference. First operand 7921 states and 12105 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:18,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:18,771 INFO L93 Difference]: Finished difference Result 45567 states and 66928 transitions. [2023-12-15 17:57:18,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 17:57:18,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 86 [2023-12-15 17:57:18,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:18,841 INFO L225 Difference]: With dead ends: 45567 [2023-12-15 17:57:18,841 INFO L226 Difference]: Without dead ends: 41085 [2023-12-15 17:57:18,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 17:57:18,862 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 8059 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8059 SdHoareTripleChecker+Valid, 3989 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:57:18,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8059 Valid, 3989 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:57:18,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41085 states. [2023-12-15 17:57:19,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41085 to 13361. [2023-12-15 17:57:19,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13361 states, 13359 states have (on average 1.493000973126731) internal successors, (19945), 13360 states have internal predecessors, (19945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:19,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13361 states to 13361 states and 19945 transitions. [2023-12-15 17:57:19,486 INFO L78 Accepts]: Start accepts. Automaton has 13361 states and 19945 transitions. Word has length 86 [2023-12-15 17:57:19,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:19,486 INFO L495 AbstractCegarLoop]: Abstraction has 13361 states and 19945 transitions. [2023-12-15 17:57:19,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:19,486 INFO L276 IsEmpty]: Start isEmpty. Operand 13361 states and 19945 transitions. [2023-12-15 17:57:19,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 17:57:19,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:19,489 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:19,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 17:57:19,489 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:19,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:19,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1300301636, now seen corresponding path program 1 times [2023-12-15 17:57:19,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:19,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803001069] [2023-12-15 17:57:19,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:19,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 17:57:19,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:19,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803001069] [2023-12-15 17:57:19,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803001069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:19,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:19,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 17:57:19,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702353830] [2023-12-15 17:57:19,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:19,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 17:57:19,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:19,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 17:57:19,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:57:19,615 INFO L87 Difference]: Start difference. First operand 13361 states and 19945 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:20,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:20,506 INFO L93 Difference]: Finished difference Result 51935 states and 76144 transitions. [2023-12-15 17:57:20,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 17:57:20,507 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 86 [2023-12-15 17:57:20,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:20,578 INFO L225 Difference]: With dead ends: 51935 [2023-12-15 17:57:20,579 INFO L226 Difference]: Without dead ends: 45565 [2023-12-15 17:57:20,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 17:57:20,603 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 8063 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8063 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:57:20,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8063 Valid, 3935 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:57:20,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45565 states. [2023-12-15 17:57:21,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45565 to 21969. [2023-12-15 17:57:21,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21969 states, 21967 states have (on average 1.471707561342013) internal successors, (32329), 21968 states have internal predecessors, (32329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:21,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21969 states to 21969 states and 32329 transitions. [2023-12-15 17:57:21,592 INFO L78 Accepts]: Start accepts. Automaton has 21969 states and 32329 transitions. Word has length 86 [2023-12-15 17:57:21,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:21,592 INFO L495 AbstractCegarLoop]: Abstraction has 21969 states and 32329 transitions. [2023-12-15 17:57:21,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:21,592 INFO L276 IsEmpty]: Start isEmpty. Operand 21969 states and 32329 transitions. [2023-12-15 17:57:21,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 17:57:21,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:21,595 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:21,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 17:57:21,595 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:21,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:21,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1528940868, now seen corresponding path program 1 times [2023-12-15 17:57:21,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:21,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089162154] [2023-12-15 17:57:21,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:21,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:21,719 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 17:57:21,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:21,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089162154] [2023-12-15 17:57:21,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089162154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:21,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:21,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 17:57:21,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813428201] [2023-12-15 17:57:21,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:21,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 17:57:21,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:21,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 17:57:21,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:57:21,722 INFO L87 Difference]: Start difference. First operand 21969 states and 32329 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:22,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:22,988 INFO L93 Difference]: Finished difference Result 58303 states and 85328 transitions. [2023-12-15 17:57:22,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 17:57:22,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 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 86 [2023-12-15 17:57:22,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:23,090 INFO L225 Difference]: With dead ends: 58303 [2023-12-15 17:57:23,092 INFO L226 Difference]: Without dead ends: 51933 [2023-12-15 17:57:23,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 17:57:23,112 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 8103 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8103 SdHoareTripleChecker+Valid, 3954 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:57:23,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8103 Valid, 3954 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:57:23,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51933 states. [2023-12-15 17:57:24,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51933 to 28337. [2023-12-15 17:57:24,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28337 states, 28335 states have (on average 1.4650785247926592) internal successors, (41513), 28336 states have internal predecessors, (41513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:24,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28337 states to 28337 states and 41513 transitions. [2023-12-15 17:57:24,091 INFO L78 Accepts]: Start accepts. Automaton has 28337 states and 41513 transitions. Word has length 86 [2023-12-15 17:57:24,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:24,091 INFO L495 AbstractCegarLoop]: Abstraction has 28337 states and 41513 transitions. [2023-12-15 17:57:24,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:24,091 INFO L276 IsEmpty]: Start isEmpty. Operand 28337 states and 41513 transitions. [2023-12-15 17:57:24,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 17:57:24,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:24,094 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:24,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 17:57:24,095 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:24,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:24,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2140370364, now seen corresponding path program 1 times [2023-12-15 17:57:24,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:24,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145988614] [2023-12-15 17:57:24,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:24,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:24,250 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 17:57:24,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:24,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145988614] [2023-12-15 17:57:24,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145988614] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:24,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:24,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 17:57:24,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438606278] [2023-12-15 17:57:24,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:24,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 17:57:24,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:24,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 17:57:24,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:57:24,252 INFO L87 Difference]: Start difference. First operand 28337 states and 41513 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2023-12-15 17:57:25,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:25,509 INFO L93 Difference]: Finished difference Result 64671 states and 94512 transitions. [2023-12-15 17:57:25,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 17:57:25,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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 86 [2023-12-15 17:57:25,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:25,614 INFO L225 Difference]: With dead ends: 64671 [2023-12-15 17:57:25,615 INFO L226 Difference]: Without dead ends: 58301 [2023-12-15 17:57:25,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 17:57:25,633 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8157 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8157 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:57:25,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8157 Valid, 3919 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:57:25,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58301 states. [2023-12-15 17:57:26,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58301 to 34705. [2023-12-15 17:57:26,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34705 states, 34703 states have (on average 1.4608823444658963) internal successors, (50697), 34704 states have internal predecessors, (50697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:26,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34705 states to 34705 states and 50697 transitions. [2023-12-15 17:57:26,800 INFO L78 Accepts]: Start accepts. Automaton has 34705 states and 50697 transitions. Word has length 86 [2023-12-15 17:57:26,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:26,801 INFO L495 AbstractCegarLoop]: Abstraction has 34705 states and 50697 transitions. [2023-12-15 17:57:26,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2023-12-15 17:57:26,801 INFO L276 IsEmpty]: Start isEmpty. Operand 34705 states and 50697 transitions. [2023-12-15 17:57:26,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 17:57:26,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:26,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:26,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 17:57:26,804 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:26,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:26,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1265863492, now seen corresponding path program 1 times [2023-12-15 17:57:26,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:26,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529749943] [2023-12-15 17:57:26,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:26,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 17:57:27,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:27,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529749943] [2023-12-15 17:57:27,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529749943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:27,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:27,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 17:57:27,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984734806] [2023-12-15 17:57:27,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:27,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 17:57:27,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:27,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 17:57:27,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:57:27,054 INFO L87 Difference]: Start difference. First operand 34705 states and 50697 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:28,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:28,463 INFO L93 Difference]: Finished difference Result 71039 states and 103696 transitions. [2023-12-15 17:57:28,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 17:57:28,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 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 86 [2023-12-15 17:57:28,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:28,558 INFO L225 Difference]: With dead ends: 71039 [2023-12-15 17:57:28,559 INFO L226 Difference]: Without dead ends: 64669 [2023-12-15 17:57:28,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 17:57:28,578 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8073 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8073 SdHoareTripleChecker+Valid, 3975 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:57:28,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8073 Valid, 3975 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:57:28,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64669 states. [2023-12-15 17:57:29,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64669 to 41073. [2023-12-15 17:57:29,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41073 states, 41071 states have (on average 1.4579873876944802) internal successors, (59881), 41072 states have internal predecessors, (59881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:29,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41073 states to 41073 states and 59881 transitions. [2023-12-15 17:57:29,822 INFO L78 Accepts]: Start accepts. Automaton has 41073 states and 59881 transitions. Word has length 86 [2023-12-15 17:57:29,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:29,822 INFO L495 AbstractCegarLoop]: Abstraction has 41073 states and 59881 transitions. [2023-12-15 17:57:29,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:29,822 INFO L276 IsEmpty]: Start isEmpty. Operand 41073 states and 59881 transitions. [2023-12-15 17:57:29,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 17:57:29,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:29,826 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:29,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 17:57:29,826 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:29,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:29,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1568884804, now seen corresponding path program 1 times [2023-12-15 17:57:29,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:29,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865579151] [2023-12-15 17:57:29,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:29,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:29,938 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 17:57:29,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:29,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865579151] [2023-12-15 17:57:29,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865579151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:29,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:29,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 17:57:29,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094031238] [2023-12-15 17:57:29,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:29,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 17:57:29,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:29,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 17:57:29,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:57:29,941 INFO L87 Difference]: Start difference. First operand 41073 states and 59881 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:31,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:31,680 INFO L93 Difference]: Finished difference Result 77407 states and 112880 transitions. [2023-12-15 17:57:31,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 17:57:31,681 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 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 86 [2023-12-15 17:57:31,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:31,815 INFO L225 Difference]: With dead ends: 77407 [2023-12-15 17:57:31,815 INFO L226 Difference]: Without dead ends: 71037 [2023-12-15 17:57:31,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 17:57:31,833 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 8010 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8010 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:57:31,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8010 Valid, 4111 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:57:31,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71037 states. [2023-12-15 17:57:33,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71037 to 47441. [2023-12-15 17:57:33,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47441 states, 47439 states have (on average 1.455869643120639) internal successors, (69065), 47440 states have internal predecessors, (69065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:33,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47441 states to 47441 states and 69065 transitions. [2023-12-15 17:57:33,492 INFO L78 Accepts]: Start accepts. Automaton has 47441 states and 69065 transitions. Word has length 86 [2023-12-15 17:57:33,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:33,492 INFO L495 AbstractCegarLoop]: Abstraction has 47441 states and 69065 transitions. [2023-12-15 17:57:33,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:33,492 INFO L276 IsEmpty]: Start isEmpty. Operand 47441 states and 69065 transitions. [2023-12-15 17:57:33,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-15 17:57:33,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:33,496 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:33,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 17:57:33,496 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:33,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:33,497 INFO L85 PathProgramCache]: Analyzing trace with hash 781458360, now seen corresponding path program 1 times [2023-12-15 17:57:33,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:33,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383085965] [2023-12-15 17:57:33,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:33,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:33,578 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:33,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:33,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383085965] [2023-12-15 17:57:33,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383085965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:33,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:33,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:57:33,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487791944] [2023-12-15 17:57:33,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:33,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:57:33,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:33,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:57:33,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:57:33,580 INFO L87 Difference]: Start difference. First operand 47441 states and 69065 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:34,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:34,685 INFO L93 Difference]: Finished difference Result 93333 states and 135307 transitions. [2023-12-15 17:57:34,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:57:34,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2023-12-15 17:57:34,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:34,738 INFO L225 Difference]: With dead ends: 93333 [2023-12-15 17:57:34,738 INFO L226 Difference]: Without dead ends: 47443 [2023-12-15 17:57:34,764 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 [2023-12-15 17:57:34,764 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 53 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3143 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 [2023-12-15 17:57:34,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3143 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:57:34,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47443 states. [2023-12-15 17:57:36,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47443 to 47441. [2023-12-15 17:57:36,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47441 states, 47439 states have (on average 1.4413668079006725) internal successors, (68377), 47440 states have internal predecessors, (68377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:36,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47441 states to 47441 states and 68377 transitions. [2023-12-15 17:57:36,392 INFO L78 Accepts]: Start accepts. Automaton has 47441 states and 68377 transitions. Word has length 87 [2023-12-15 17:57:36,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:36,392 INFO L495 AbstractCegarLoop]: Abstraction has 47441 states and 68377 transitions. [2023-12-15 17:57:36,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:36,393 INFO L276 IsEmpty]: Start isEmpty. Operand 47441 states and 68377 transitions. [2023-12-15 17:57:36,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-15 17:57:36,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:36,396 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:36,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 17:57:36,396 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:36,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:36,396 INFO L85 PathProgramCache]: Analyzing trace with hash 114924484, now seen corresponding path program 1 times [2023-12-15 17:57:36,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:36,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121409609] [2023-12-15 17:57:36,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:36,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:36,459 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:36,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:36,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121409609] [2023-12-15 17:57:36,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121409609] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:36,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:36,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:57:36,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374403734] [2023-12-15 17:57:36,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:36,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:57:36,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:36,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:57:36,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:57:36,461 INFO L87 Difference]: Start difference. First operand 47441 states and 68377 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:36,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:36,888 INFO L93 Difference]: Finished difference Result 64265 states and 92640 transitions. [2023-12-15 17:57:36,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:57:36,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-15 17:57:36,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:36,910 INFO L225 Difference]: With dead ends: 64265 [2023-12-15 17:57:36,910 INFO L226 Difference]: Without dead ends: 18375 [2023-12-15 17:57:36,936 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 [2023-12-15 17:57:36,936 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 47 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3140 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 [2023-12-15 17:57:36,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3140 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:57:36,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18375 states. [2023-12-15 17:57:37,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18375 to 18368. [2023-12-15 17:57:37,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18368 states, 18366 states have (on average 1.4613960579331373) internal successors, (26840), 18367 states have internal predecessors, (26840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:37,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18368 states to 18368 states and 26840 transitions. [2023-12-15 17:57:37,660 INFO L78 Accepts]: Start accepts. Automaton has 18368 states and 26840 transitions. Word has length 88 [2023-12-15 17:57:37,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:37,660 INFO L495 AbstractCegarLoop]: Abstraction has 18368 states and 26840 transitions. [2023-12-15 17:57:37,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:37,660 INFO L276 IsEmpty]: Start isEmpty. Operand 18368 states and 26840 transitions. [2023-12-15 17:57:37,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-15 17:57:37,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:37,662 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:37,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 17:57:37,663 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:37,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:37,663 INFO L85 PathProgramCache]: Analyzing trace with hash -418898426, now seen corresponding path program 1 times [2023-12-15 17:57:37,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:37,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302343479] [2023-12-15 17:57:37,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:37,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:37,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:37,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302343479] [2023-12-15 17:57:37,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302343479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:37,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:37,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:57:37,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206982372] [2023-12-15 17:57:37,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:37,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:57:37,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:37,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:57:37,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:57:37,735 INFO L87 Difference]: Start difference. First operand 18368 states and 26840 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:37,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:37,952 INFO L93 Difference]: Finished difference Result 26772 states and 38842 transitions. [2023-12-15 17:57:37,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:57:37,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-15 17:57:37,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:37,964 INFO L225 Difference]: With dead ends: 26772 [2023-12-15 17:57:37,965 INFO L226 Difference]: Without dead ends: 9970 [2023-12-15 17:57:37,976 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 [2023-12-15 17:57:37,977 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 49 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3119 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 [2023-12-15 17:57:37,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3119 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:57:37,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9970 states. [2023-12-15 17:57:38,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9970 to 9968. [2023-12-15 17:57:38,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9968 states, 9966 states have (on average 1.4770218743728678) internal successors, (14720), 9967 states have internal predecessors, (14720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:38,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9968 states to 9968 states and 14720 transitions. [2023-12-15 17:57:38,343 INFO L78 Accepts]: Start accepts. Automaton has 9968 states and 14720 transitions. Word has length 89 [2023-12-15 17:57:38,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:38,344 INFO L495 AbstractCegarLoop]: Abstraction has 9968 states and 14720 transitions. [2023-12-15 17:57:38,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:38,344 INFO L276 IsEmpty]: Start isEmpty. Operand 9968 states and 14720 transitions. [2023-12-15 17:57:38,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-15 17:57:38,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:38,366 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:38,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 17:57:38,366 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:38,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:38,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1396517332, now seen corresponding path program 1 times [2023-12-15 17:57:38,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:38,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501273501] [2023-12-15 17:57:38,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:38,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:38,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:38,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501273501] [2023-12-15 17:57:38,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501273501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:38,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:38,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:57:38,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399216859] [2023-12-15 17:57:38,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:38,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:57:38,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:38,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:57:38,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:57:38,457 INFO L87 Difference]: Start difference. First operand 9968 states and 14720 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:38,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:38,563 INFO L93 Difference]: Finished difference Result 14172 states and 20662 transitions. [2023-12-15 17:57:38,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:57:38,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-15 17:57:38,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:38,569 INFO L225 Difference]: With dead ends: 14172 [2023-12-15 17:57:38,569 INFO L226 Difference]: Without dead ends: 5770 [2023-12-15 17:57:38,574 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 [2023-12-15 17:57:38,575 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 46 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3104 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 [2023-12-15 17:57:38,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3104 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:57:38,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5770 states. [2023-12-15 17:57:38,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5770 to 5768. [2023-12-15 17:57:38,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5766 states have (on average 1.5123135622615331) internal successors, (8720), 5767 states have internal predecessors, (8720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:38,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 8720 transitions. [2023-12-15 17:57:38,689 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 8720 transitions. Word has length 91 [2023-12-15 17:57:38,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:38,689 INFO L495 AbstractCegarLoop]: Abstraction has 5768 states and 8720 transitions. [2023-12-15 17:57:38,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:38,689 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 8720 transitions. [2023-12-15 17:57:38,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 17:57:38,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:38,691 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:38,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 17:57:38,692 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:38,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:38,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1655112071, now seen corresponding path program 1 times [2023-12-15 17:57:38,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:38,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794028826] [2023-12-15 17:57:38,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:38,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:38,904 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:38,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:38,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794028826] [2023-12-15 17:57:38,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794028826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:38,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:38,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:57:38,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292862430] [2023-12-15 17:57:38,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:38,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:57:38,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:38,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:57:38,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:57:38,906 INFO L87 Difference]: Start difference. First operand 5768 states and 8720 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:43,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:43,706 INFO L93 Difference]: Finished difference Result 9525 states and 15610 transitions. [2023-12-15 17:57:43,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:57:43,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-15 17:57:43,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:43,713 INFO L225 Difference]: With dead ends: 9525 [2023-12-15 17:57:43,714 INFO L226 Difference]: Without dead ends: 8021 [2023-12-15 17:57:43,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:57:43,715 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 2400 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4808 mSolverCounterSat, 1138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 5946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1138 IncrementalHoareTripleChecker+Valid, 4808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-15 17:57:43,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2400 Valid, 831 Invalid, 5946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1138 Valid, 4808 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-15 17:57:43,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8021 states. [2023-12-15 17:57:43,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8021 to 8021. [2023-12-15 17:57:43,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8021 states, 8019 states have (on average 1.4102755954607806) internal successors, (11309), 8020 states have internal predecessors, (11309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:43,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8021 states to 8021 states and 11309 transitions. [2023-12-15 17:57:43,916 INFO L78 Accepts]: Start accepts. Automaton has 8021 states and 11309 transitions. Word has length 92 [2023-12-15 17:57:43,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:43,916 INFO L495 AbstractCegarLoop]: Abstraction has 8021 states and 11309 transitions. [2023-12-15 17:57:43,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:43,916 INFO L276 IsEmpty]: Start isEmpty. Operand 8021 states and 11309 transitions. [2023-12-15 17:57:43,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-15 17:57:43,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:43,918 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:43,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 17:57:43,918 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:43,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:43,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1276371166, now seen corresponding path program 1 times [2023-12-15 17:57:43,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:43,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480556406] [2023-12-15 17:57:43,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:43,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:43,990 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:43,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:43,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480556406] [2023-12-15 17:57:43,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480556406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:43,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:43,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:57:43,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724639989] [2023-12-15 17:57:43,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:43,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:57:43,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:43,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:57:43,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:57:43,992 INFO L87 Difference]: Start difference. First operand 8021 states and 11309 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:44,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:44,086 INFO L93 Difference]: Finished difference Result 10125 states and 14251 transitions. [2023-12-15 17:57:44,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:57:44,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2023-12-15 17:57:44,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:44,092 INFO L225 Difference]: With dead ends: 10125 [2023-12-15 17:57:44,092 INFO L226 Difference]: Without dead ends: 5923 [2023-12-15 17:57:44,096 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 [2023-12-15 17:57:44,096 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 43 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3089 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 [2023-12-15 17:57:44,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3089 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:57:44,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5923 states. [2023-12-15 17:57:44,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5923 to 5921. [2023-12-15 17:57:44,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5921 states, 5919 states have (on average 1.4088528467646562) internal successors, (8339), 5920 states have internal predecessors, (8339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:44,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5921 states to 5921 states and 8339 transitions. [2023-12-15 17:57:44,219 INFO L78 Accepts]: Start accepts. Automaton has 5921 states and 8339 transitions. Word has length 93 [2023-12-15 17:57:44,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:44,219 INFO L495 AbstractCegarLoop]: Abstraction has 5921 states and 8339 transitions. [2023-12-15 17:57:44,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:44,219 INFO L276 IsEmpty]: Start isEmpty. Operand 5921 states and 8339 transitions. [2023-12-15 17:57:44,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-15 17:57:44,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:44,221 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:44,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 17:57:44,221 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:44,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:44,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1865380126, now seen corresponding path program 1 times [2023-12-15 17:57:44,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:44,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101145536] [2023-12-15 17:57:44,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:44,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:44,276 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-15 17:57:44,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:44,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101145536] [2023-12-15 17:57:44,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101145536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:44,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:44,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:57:44,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100358339] [2023-12-15 17:57:44,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:44,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:57:44,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:44,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:57:44,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:57:44,277 INFO L87 Difference]: Start difference. First operand 5921 states and 8339 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:47,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:47,205 INFO L93 Difference]: Finished difference Result 10429 states and 15722 transitions. [2023-12-15 17:57:47,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:57:47,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 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 94 [2023-12-15 17:57:47,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:47,215 INFO L225 Difference]: With dead ends: 10429 [2023-12-15 17:57:47,215 INFO L226 Difference]: Without dead ends: 7423 [2023-12-15 17:57:47,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:57:47,219 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 846 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:57:47,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 591 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 17:57:47,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7423 states. [2023-12-15 17:57:47,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7423 to 7423. [2023-12-15 17:57:47,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7423 states, 7421 states have (on average 1.38269774962943) internal successors, (10261), 7422 states have internal predecessors, (10261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:47,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7423 states to 7423 states and 10261 transitions. [2023-12-15 17:57:47,331 INFO L78 Accepts]: Start accepts. Automaton has 7423 states and 10261 transitions. Word has length 94 [2023-12-15 17:57:47,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:47,332 INFO L495 AbstractCegarLoop]: Abstraction has 7423 states and 10261 transitions. [2023-12-15 17:57:47,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:47,332 INFO L276 IsEmpty]: Start isEmpty. Operand 7423 states and 10261 transitions. [2023-12-15 17:57:47,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-15 17:57:47,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:47,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:47,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-15 17:57:47,333 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:47,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:47,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1285169680, now seen corresponding path program 1 times [2023-12-15 17:57:47,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:47,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153349149] [2023-12-15 17:57:47,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:47,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:47,418 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:47,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:47,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153349149] [2023-12-15 17:57:47,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153349149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:57:47,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:57:47,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:57:47,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557418261] [2023-12-15 17:57:47,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:57:47,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:57:47,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:47,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:57:47,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:57:47,420 INFO L87 Difference]: Start difference. First operand 7423 states and 10261 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:47,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:47,507 INFO L93 Difference]: Finished difference Result 8477 states and 11718 transitions. [2023-12-15 17:57:47,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:57:47,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-15 17:57:47,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:47,514 INFO L225 Difference]: With dead ends: 8477 [2023-12-15 17:57:47,514 INFO L226 Difference]: Without dead ends: 6375 [2023-12-15 17:57:47,517 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 [2023-12-15 17:57:47,517 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 40 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3074 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 [2023-12-15 17:57:47,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3074 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:57:47,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6375 states. [2023-12-15 17:57:47,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6375 to 6373. [2023-12-15 17:57:47,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6373 states, 6371 states have (on average 1.3798461779940354) internal successors, (8791), 6372 states have internal predecessors, (8791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:47,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6373 states to 6373 states and 8791 transitions. [2023-12-15 17:57:47,600 INFO L78 Accepts]: Start accepts. Automaton has 6373 states and 8791 transitions. Word has length 95 [2023-12-15 17:57:47,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:47,601 INFO L495 AbstractCegarLoop]: Abstraction has 6373 states and 8791 transitions. [2023-12-15 17:57:47,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand 6373 states and 8791 transitions. [2023-12-15 17:57:47,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-15 17:57:47,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:47,602 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:47,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-15 17:57:47,603 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:47,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:47,603 INFO L85 PathProgramCache]: Analyzing trace with hash 865289790, now seen corresponding path program 1 times [2023-12-15 17:57:47,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:47,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330742484] [2023-12-15 17:57:47,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:47,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:47,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:57:47,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:47,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330742484] [2023-12-15 17:57:47,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330742484] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:57:47,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909832224] [2023-12-15 17:57:47,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:47,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:57:47,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:57:47,730 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) [2023-12-15 17:57:47,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 17:57:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:47,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 17:57:47,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:57:47,998 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:57:47,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:57:48,268 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:57:48,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909832224] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:57:48,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:57:48,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-12-15 17:57:48,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395737228] [2023-12-15 17:57:48,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:57:48,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 17:57:48,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:48,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 17:57:48,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:57:48,270 INFO L87 Difference]: Start difference. First operand 6373 states and 8791 transitions. Second operand has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:48,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:48,421 INFO L93 Difference]: Finished difference Result 8909 states and 12190 transitions. [2023-12-15 17:57:48,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:57:48,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 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 97 [2023-12-15 17:57:48,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:48,429 INFO L225 Difference]: With dead ends: 8909 [2023-12-15 17:57:48,429 INFO L226 Difference]: Without dead ends: 7857 [2023-12-15 17:57:48,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2023-12-15 17:57:48,432 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 3021 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3021 SdHoareTripleChecker+Valid, 3392 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:57:48,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3021 Valid, 3392 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:57:48,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7857 states. [2023-12-15 17:57:48,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7857 to 7780. [2023-12-15 17:57:48,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7780 states, 7778 states have (on average 1.3605039856004115) internal successors, (10582), 7779 states have internal predecessors, (10582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:48,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7780 states to 7780 states and 10582 transitions. [2023-12-15 17:57:48,562 INFO L78 Accepts]: Start accepts. Automaton has 7780 states and 10582 transitions. Word has length 97 [2023-12-15 17:57:48,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:48,562 INFO L495 AbstractCegarLoop]: Abstraction has 7780 states and 10582 transitions. [2023-12-15 17:57:48,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:48,563 INFO L276 IsEmpty]: Start isEmpty. Operand 7780 states and 10582 transitions. [2023-12-15 17:57:48,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-15 17:57:48,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:48,563 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:48,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 17:57:48,769 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,SelfDestructingSolverStorable27 [2023-12-15 17:57:48,769 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:48,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:48,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1164140212, now seen corresponding path program 1 times [2023-12-15 17:57:48,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:48,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082649474] [2023-12-15 17:57:48,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:48,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:49,429 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:49,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:49,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082649474] [2023-12-15 17:57:49,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082649474] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:57:49,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977006284] [2023-12-15 17:57:49,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:49,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:57:49,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:57:49,434 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) [2023-12-15 17:57:49,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 17:57:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:49,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 17:57:49,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:57:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:49,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:57:50,767 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:50,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977006284] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:57:50,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:57:50,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-12-15 17:57:50,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285156291] [2023-12-15 17:57:50,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:57:50,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-15 17:57:50,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:50,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-15 17:57:50,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2023-12-15 17:57:50,769 INFO L87 Difference]: Start difference. First operand 7780 states and 10582 transitions. Second operand has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:53,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:57:53,075 INFO L93 Difference]: Finished difference Result 19624 states and 26143 transitions. [2023-12-15 17:57:53,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-15 17:57:53,076 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 states have internal predecessors, (256), 0 states have call successors, (0), 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 98 [2023-12-15 17:57:53,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:57:53,093 INFO L225 Difference]: With dead ends: 19624 [2023-12-15 17:57:53,094 INFO L226 Difference]: Without dead ends: 17209 [2023-12-15 17:57:53,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1004, Invalid=3966, Unknown=0, NotChecked=0, Total=4970 [2023-12-15 17:57:53,101 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 25899 mSDsluCounter, 6678 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25899 SdHoareTripleChecker+Valid, 8201 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 17:57:53,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25899 Valid, 8201 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 17:57:53,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17209 states. [2023-12-15 17:57:53,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17209 to 16417. [2023-12-15 17:57:53,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16417 states, 16415 states have (on average 1.3282363691745356) internal successors, (21803), 16416 states have internal predecessors, (21803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:53,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16417 states to 16417 states and 21803 transitions. [2023-12-15 17:57:53,529 INFO L78 Accepts]: Start accepts. Automaton has 16417 states and 21803 transitions. Word has length 98 [2023-12-15 17:57:53,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:53,529 INFO L495 AbstractCegarLoop]: Abstraction has 16417 states and 21803 transitions. [2023-12-15 17:57:53,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:53,530 INFO L276 IsEmpty]: Start isEmpty. Operand 16417 states and 21803 transitions. [2023-12-15 17:57:53,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-15 17:57:53,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:53,531 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:53,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 17:57:53,733 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,SelfDestructingSolverStorable28 [2023-12-15 17:57:53,734 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:53,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:53,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1133922124, now seen corresponding path program 1 times [2023-12-15 17:57:53,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:53,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276934802] [2023-12-15 17:57:53,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:53,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:54,449 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:54,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:54,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276934802] [2023-12-15 17:57:54,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276934802] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:57:54,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189203107] [2023-12-15 17:57:54,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:54,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:57:54,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:57:54,451 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) [2023-12-15 17:57:54,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 17:57:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:54,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 17:57:54,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:57:55,148 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:55,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:57:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:56,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189203107] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:57:56,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:57:56,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-12-15 17:57:56,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637214323] [2023-12-15 17:57:56,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:57:56,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-15 17:57:56,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:57:56,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-15 17:57:56,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2023-12-15 17:57:56,008 INFO L87 Difference]: Start difference. First operand 16417 states and 21803 transitions. Second operand has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:58:00,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:58:00,692 INFO L93 Difference]: Finished difference Result 68529 states and 89522 transitions. [2023-12-15 17:58:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-15 17:58:00,692 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 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 98 [2023-12-15 17:58:00,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:58:00,752 INFO L225 Difference]: With dead ends: 68529 [2023-12-15 17:58:00,752 INFO L226 Difference]: Without dead ends: 57771 [2023-12-15 17:58:00,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2233 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1531, Invalid=7025, Unknown=0, NotChecked=0, Total=8556 [2023-12-15 17:58:00,763 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 28274 mSDsluCounter, 9764 mSDsCounter, 0 mSdLazyCounter, 1863 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28274 SdHoareTripleChecker+Valid, 11289 SdHoareTripleChecker+Invalid, 1911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 17:58:00,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28274 Valid, 11289 Invalid, 1911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1863 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 17:58:00,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57771 states. [2023-12-15 17:58:02,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57771 to 53427. [2023-12-15 17:58:02,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53427 states, 53425 states have (on average 1.2941319606925596) internal successors, (69139), 53426 states have internal predecessors, (69139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:58:02,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53427 states to 53427 states and 69139 transitions. [2023-12-15 17:58:02,367 INFO L78 Accepts]: Start accepts. Automaton has 53427 states and 69139 transitions. Word has length 98 [2023-12-15 17:58:02,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:58:02,367 INFO L495 AbstractCegarLoop]: Abstraction has 53427 states and 69139 transitions. [2023-12-15 17:58:02,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:58:02,368 INFO L276 IsEmpty]: Start isEmpty. Operand 53427 states and 69139 transitions. [2023-12-15 17:58:02,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-15 17:58:02,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:58:02,370 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:58:02,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 Received shutdown request... [2023-12-15 17:58:02,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:58:02,583 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:58:02,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:58:02,583 INFO L85 PathProgramCache]: Analyzing trace with hash -414327924, now seen corresponding path program 1 times [2023-12-15 17:58:02,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:58:02,593 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 17:58:02,593 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 100 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during feasibility check between null and IpTcStrategyModuleSmtInterpolCraig [672843222]. [2023-12-15 17:58:02,599 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 17:58:02,602 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:58:02,603 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 17:58:02,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:58:02 BoogieIcfgContainer [2023-12-15 17:58:02,606 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 17:58:02,607 INFO L158 Benchmark]: Toolchain (without parser) took 56515.02ms. Allocated memory was 394.3MB in the beginning and 4.7GB in the end (delta: 4.3GB). Free memory was 326.5MB in the beginning and 3.1GB in the end (delta: -2.8GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-15 17:58:02,607 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 197.1MB. Free memory is still 144.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 17:58:02,607 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1294.92ms. Allocated memory is still 394.3MB. Free memory was 326.5MB in the beginning and 239.1MB in the end (delta: 87.4MB). Peak memory consumption was 88.5MB. Max. memory is 8.0GB. [2023-12-15 17:58:02,607 INFO L158 Benchmark]: Boogie Procedure Inliner took 268.35ms. Allocated memory was 394.3MB in the beginning and 568.3MB in the end (delta: 174.1MB). Free memory was 239.1MB in the beginning and 455.3MB in the end (delta: -216.2MB). Peak memory consumption was 44.9MB. Max. memory is 8.0GB. [2023-12-15 17:58:02,609 INFO L158 Benchmark]: Boogie Preprocessor took 497.60ms. Allocated memory is still 568.3MB. Free memory was 455.3MB in the beginning and 452.8MB in the end (delta: 2.5MB). Peak memory consumption was 88.0MB. Max. memory is 8.0GB. [2023-12-15 17:58:02,610 INFO L158 Benchmark]: RCFGBuilder took 3209.69ms. Allocated memory was 568.3MB in the beginning and 1.1GB in the end (delta: 568.3MB). Free memory was 452.2MB in the beginning and 967.6MB in the end (delta: -515.4MB). Peak memory consumption was 202.4MB. Max. memory is 8.0GB. [2023-12-15 17:58:02,610 INFO L158 Benchmark]: TraceAbstraction took 51238.29ms. Allocated memory was 1.1GB in the beginning and 4.7GB in the end (delta: 3.6GB). Free memory was 967.1MB in the beginning and 3.1GB in the end (delta: -2.2GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-15 17:58:02,612 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks [2023-12-15 17:58:02,614 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 197.1MB. Free memory is still 144.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1294.92ms. Allocated memory is still 394.3MB. Free memory was 326.5MB in the beginning and 239.1MB in the end (delta: 87.4MB). Peak memory consumption was 88.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 268.35ms. Allocated memory was 394.3MB in the beginning and 568.3MB in the end (delta: 174.1MB). Free memory was 239.1MB in the beginning and 455.3MB in the end (delta: -216.2MB). Peak memory consumption was 44.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 497.60ms. Allocated memory is still 568.3MB. Free memory was 455.3MB in the beginning and 452.8MB in the end (delta: 2.5MB). Peak memory consumption was 88.0MB. Max. memory is 8.0GB. * RCFGBuilder took 3209.69ms. Allocated memory was 568.3MB in the beginning and 1.1GB in the end (delta: 568.3MB). Free memory was 452.2MB in the beginning and 967.6MB in the end (delta: -515.4MB). Peak memory consumption was 202.4MB. Max. memory is 8.0GB. * TraceAbstraction took 51238.29ms. Allocated memory was 1.1GB in the beginning and 4.7GB in the end (delta: 3.6GB). Free memory was 967.1MB in the beginning and 3.1GB in the end (delta: -2.2GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 512]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 512). Cancelled while NwaCegarLoop was analyzing trace of length 100 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during feasibility check between null and IpTcStrategyModuleSmtInterpolCraig [672843222]. - TimeoutResultAtElement [Line: 599]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 599). Cancelled while NwaCegarLoop was analyzing trace of length 100 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during feasibility check between null and IpTcStrategyModuleSmtInterpolCraig [672843222]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 849 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 51.2s, OverallIterations: 31, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 29.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 131837 SdHoareTripleChecker+Valid, 12.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 131837 mSDsluCounter, 95497 SdHoareTripleChecker+Invalid, 10.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50950 mSDsCounter, 2688 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13917 IncrementalHoareTripleChecker+Invalid, 16605 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2688 mSolverCounterUnsat, 44547 mSDtfsCounter, 13917 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 882 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3406 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53427occurred in iteration=30, InterpolantAutomatonStates: 239, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.9s AutomataMinimizationTime, 30 MinimizatonAttempts, 151424 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 2551 NumberOfCodeBlocks, 2551 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 2808 ConstructedInterpolants, 0 QuantifiedInterpolants, 20784 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1441 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 36 InterpolantComputations, 27 PerfectInterpolantSequences, 313/394 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown