/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:30:36,259 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:30:36,320 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 11:30:36,326 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:30:36,326 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:30:36,350 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:30:36,351 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:30:36,351 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:30:36,351 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:30:36,352 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:30:36,354 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:30:36,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:30:36,355 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:30:36,358 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:30:36,358 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:30:36,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:30:36,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:30:36,359 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:30:36,360 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:30:36,360 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:30:36,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:30:36,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:30:36,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:30:36,376 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:30:36,377 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:30:36,377 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:30:36,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:30:36,377 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:30:36,377 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:30:36,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:30:36,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:30:36,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:30:36,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:30:36,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:30:36,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:30:36,378 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:30:36,378 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:30:36,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:30:36,379 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:30:36,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:30:36,379 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:30:36,379 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:30:36,379 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:30:36,380 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:30:36,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:30:36,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:30:36,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:30:36,614 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:30:36,614 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:30:36,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c [2023-12-21 11:30:37,707 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:30:37,908 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:30:37,914 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c [2023-12-21 11:30:37,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/109c972ee/ae818f02692b4d77ac117ea9f5e58ce3/FLAGa0fc6d370 [2023-12-21 11:30:37,946 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/109c972ee/ae818f02692b4d77ac117ea9f5e58ce3 [2023-12-21 11:30:37,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:30:37,949 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:30:37,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:30:37,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:30:37,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:30:37,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:30:37" (1/1) ... [2023-12-21 11:30:37,955 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:30:37, skipping insertion in model container [2023-12-21 11:30:37,956 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:30:37" (1/1) ... [2023-12-21 11:30:38,001 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:30:38,223 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c[28368,28381] [2023-12-21 11:30:38,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:30:38,234 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:30:38,284 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c[28368,28381] [2023-12-21 11:30:38,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:30:38,295 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:30:38,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:30:38 WrapperNode [2023-12-21 11:30:38,296 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:30:38,297 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:30:38,297 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:30:38,297 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:30:38,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:30:38" (1/1) ... [2023-12-21 11:30:38,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:30:38" (1/1) ... [2023-12-21 11:30:38,345 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 943 [2023-12-21 11:30:38,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:30:38,346 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:30:38,346 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:30:38,346 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:30:38,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:30:38" (1/1) ... [2023-12-21 11:30:38,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:30:38" (1/1) ... [2023-12-21 11:30:38,371 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:30:38" (1/1) ... [2023-12-21 11:30:38,384 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 11:30:38,384 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:30:38" (1/1) ... [2023-12-21 11:30:38,384 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:30:38" (1/1) ... [2023-12-21 11:30:38,394 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:30:38" (1/1) ... [2023-12-21 11:30:38,400 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:30:38" (1/1) ... [2023-12-21 11:30:38,403 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:30:38" (1/1) ... [2023-12-21 11:30:38,405 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:30:38" (1/1) ... [2023-12-21 11:30:38,409 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:30:38,410 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:30:38,410 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:30:38,410 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:30:38,411 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:30:38" (1/1) ... [2023-12-21 11:30:38,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:30:38,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:30:38,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 11:30:38,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 11:30:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:30:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:30:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:30:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:30:38,649 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:30:38,651 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:30:39,300 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:30:39,340 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:30:39,340 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 11:30:39,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:30:39 BoogieIcfgContainer [2023-12-21 11:30:39,341 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:30:39,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:30:39,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:30:39,344 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:30:39,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:30:37" (1/3) ... [2023-12-21 11:30:39,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229e74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:30:39, skipping insertion in model container [2023-12-21 11:30:39,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:30:38" (2/3) ... [2023-12-21 11:30:39,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229e74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:30:39, skipping insertion in model container [2023-12-21 11:30:39,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:30:39" (3/3) ... [2023-12-21 11:30:39,346 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.UNBOUNDED.pals.c [2023-12-21 11:30:39,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:30:39,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:30:39,393 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:30:39,398 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;@74ebe494, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:30:39,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:30:39,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.8398576512455516) internal successors, (517), 282 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:39,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 11:30:39,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:39,410 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:39,411 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:39,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:39,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1778473613, now seen corresponding path program 1 times [2023-12-21 11:30:39,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:39,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335547867] [2023-12-21 11:30:39,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:39,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:39,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:30:39,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:39,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335547867] [2023-12-21 11:30:39,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335547867] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:39,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:30:39,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:30:39,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701753709] [2023-12-21 11:30:39,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:39,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 11:30:39,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:39,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 11:30:39,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:30:39,693 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.8398576512455516) internal successors, (517), 282 states have internal predecessors, (517), 0 states have call successors, (0), 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 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:39,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:39,734 INFO L93 Difference]: Finished difference Result 375 states and 681 transitions. [2023-12-21 11:30:39,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 11:30:39,735 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-21 11:30:39,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:39,743 INFO L225 Difference]: With dead ends: 375 [2023-12-21 11:30:39,743 INFO L226 Difference]: Without dead ends: 281 [2023-12-21 11:30:39,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:30:39,748 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:39,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 509 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:30:39,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-21 11:30:39,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-12-21 11:30:39,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.8285714285714285) internal successors, (512), 280 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:39,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 512 transitions. [2023-12-21 11:30:39,782 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 512 transitions. Word has length 74 [2023-12-21 11:30:39,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:39,782 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 512 transitions. [2023-12-21 11:30:39,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:39,782 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 512 transitions. [2023-12-21 11:30:39,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 11:30:39,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:39,785 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:39,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:30:39,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:39,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:39,786 INFO L85 PathProgramCache]: Analyzing trace with hash 711055349, now seen corresponding path program 1 times [2023-12-21 11:30:39,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:39,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942576887] [2023-12-21 11:30:39,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:39,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:39,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:30:39,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:39,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942576887] [2023-12-21 11:30:39,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942576887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:39,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:30:39,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:30:39,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710033594] [2023-12-21 11:30:39,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:39,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:30:39,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:39,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:30:39,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:30:39,967 INFO L87 Difference]: Start difference. First operand 281 states and 512 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:40,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:40,062 INFO L93 Difference]: Finished difference Result 375 states and 675 transitions. [2023-12-21 11:30:40,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:30:40,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-21 11:30:40,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:40,064 INFO L225 Difference]: With dead ends: 375 [2023-12-21 11:30:40,064 INFO L226 Difference]: Without dead ends: 281 [2023-12-21 11:30:40,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:30:40,066 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 0 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:40,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1482 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:30:40,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-21 11:30:40,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-12-21 11:30:40,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.6785714285714286) internal successors, (470), 280 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:40,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 470 transitions. [2023-12-21 11:30:40,117 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 470 transitions. Word has length 74 [2023-12-21 11:30:40,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:40,117 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 470 transitions. [2023-12-21 11:30:40,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:40,118 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 470 transitions. [2023-12-21 11:30:40,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 11:30:40,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:40,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:40,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:30:40,121 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:40,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:40,121 INFO L85 PathProgramCache]: Analyzing trace with hash 648159621, now seen corresponding path program 1 times [2023-12-21 11:30:40,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:40,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101843841] [2023-12-21 11:30:40,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:40,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:40,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:30:40,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:40,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101843841] [2023-12-21 11:30:40,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101843841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:40,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:30:40,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:30:40,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602347174] [2023-12-21 11:30:40,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:40,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:30:40,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:40,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:30:40,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:30:40,311 INFO L87 Difference]: Start difference. First operand 281 states and 470 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:40,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:40,357 INFO L93 Difference]: Finished difference Result 452 states and 769 transitions. [2023-12-21 11:30:40,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:30:40,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2023-12-21 11:30:40,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:40,362 INFO L225 Difference]: With dead ends: 452 [2023-12-21 11:30:40,362 INFO L226 Difference]: Without dead ends: 361 [2023-12-21 11:30:40,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:30:40,367 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 130 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:40,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 879 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:30:40,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-12-21 11:30:40,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 358. [2023-12-21 11:30:40,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6834733893557423) internal successors, (601), 357 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:40,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 601 transitions. [2023-12-21 11:30:40,383 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 601 transitions. Word has length 115 [2023-12-21 11:30:40,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:40,383 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 601 transitions. [2023-12-21 11:30:40,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:40,384 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 601 transitions. [2023-12-21 11:30:40,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 11:30:40,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:40,385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:40,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:30:40,385 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:40,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:40,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1536040655, now seen corresponding path program 1 times [2023-12-21 11:30:40,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:40,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507433714] [2023-12-21 11:30:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:40,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:40,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:30:40,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:40,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507433714] [2023-12-21 11:30:40,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507433714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:40,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:30:40,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:30:40,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290259889] [2023-12-21 11:30:40,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:40,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:30:40,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:40,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:30:40,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:30:40,517 INFO L87 Difference]: Start difference. First operand 358 states and 601 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:40,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:40,539 INFO L93 Difference]: Finished difference Result 676 states and 1149 transitions. [2023-12-21 11:30:40,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:30:40,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-12-21 11:30:40,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:40,543 INFO L225 Difference]: With dead ends: 676 [2023-12-21 11:30:40,543 INFO L226 Difference]: Without dead ends: 508 [2023-12-21 11:30:40,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:30:40,552 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 131 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:40,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 891 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:30:40,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-12-21 11:30:40,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 504. [2023-12-21 11:30:40,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 1.6918489065606361) internal successors, (851), 503 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:40,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 851 transitions. [2023-12-21 11:30:40,574 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 851 transitions. Word has length 118 [2023-12-21 11:30:40,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:40,574 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 851 transitions. [2023-12-21 11:30:40,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:40,575 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 851 transitions. [2023-12-21 11:30:40,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-21 11:30:40,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:40,576 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:40,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:30:40,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:40,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:40,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1145213002, now seen corresponding path program 1 times [2023-12-21 11:30:40,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:40,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822547359] [2023-12-21 11:30:40,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:40,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:30:40,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:40,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822547359] [2023-12-21 11:30:40,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822547359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:40,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:30:40,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:30:40,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700230202] [2023-12-21 11:30:40,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:40,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:30:40,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:40,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:30:40,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:30:40,698 INFO L87 Difference]: Start difference. First operand 504 states and 851 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:40,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:40,728 INFO L93 Difference]: Finished difference Result 1096 states and 1865 transitions. [2023-12-21 11:30:40,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:30:40,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2023-12-21 11:30:40,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:40,731 INFO L225 Difference]: With dead ends: 1096 [2023-12-21 11:30:40,731 INFO L226 Difference]: Without dead ends: 782 [2023-12-21 11:30:40,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:30:40,734 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 124 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:40,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 892 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:30:40,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2023-12-21 11:30:40,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 776. [2023-12-21 11:30:40,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 775 states have (on average 1.6916129032258065) internal successors, (1311), 775 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:40,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1311 transitions. [2023-12-21 11:30:40,750 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1311 transitions. Word has length 121 [2023-12-21 11:30:40,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:40,751 INFO L495 AbstractCegarLoop]: Abstraction has 776 states and 1311 transitions. [2023-12-21 11:30:40,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:40,751 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1311 transitions. [2023-12-21 11:30:40,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 11:30:40,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:40,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:40,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:30:40,753 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:40,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:40,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1127178636, now seen corresponding path program 1 times [2023-12-21 11:30:40,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:40,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541726437] [2023-12-21 11:30:40,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:40,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:30:40,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:40,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541726437] [2023-12-21 11:30:40,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541726437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:40,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:30:40,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:30:40,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655133721] [2023-12-21 11:30:40,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:40,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:30:40,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:40,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:30:40,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:30:40,880 INFO L87 Difference]: Start difference. First operand 776 states and 1311 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:40,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:40,917 INFO L93 Difference]: Finished difference Result 1876 states and 3177 transitions. [2023-12-21 11:30:40,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:30:40,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2023-12-21 11:30:40,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:40,922 INFO L225 Difference]: With dead ends: 1876 [2023-12-21 11:30:40,922 INFO L226 Difference]: Without dead ends: 1290 [2023-12-21 11:30:40,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:30:40,926 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 117 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:40,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 893 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:30:40,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2023-12-21 11:30:40,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1280. [2023-12-21 11:30:40,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1279 states have (on average 1.6817826426896012) internal successors, (2151), 1279 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:40,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 2151 transitions. [2023-12-21 11:30:40,976 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 2151 transitions. Word has length 124 [2023-12-21 11:30:40,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:40,977 INFO L495 AbstractCegarLoop]: Abstraction has 1280 states and 2151 transitions. [2023-12-21 11:30:40,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:40,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 2151 transitions. [2023-12-21 11:30:40,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-21 11:30:40,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:40,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:40,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:30:40,979 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:40,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:40,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1287551471, now seen corresponding path program 1 times [2023-12-21 11:30:40,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:40,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825515687] [2023-12-21 11:30:40,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:40,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:30:41,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:41,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825515687] [2023-12-21 11:30:41,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825515687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:41,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:30:41,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:30:41,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795717937] [2023-12-21 11:30:41,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:41,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:30:41,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:41,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:30:41,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:30:41,115 INFO L87 Difference]: Start difference. First operand 1280 states and 2151 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:41,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:41,320 INFO L93 Difference]: Finished difference Result 6440 states and 11003 transitions. [2023-12-21 11:30:41,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 11:30:41,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2023-12-21 11:30:41,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:41,335 INFO L225 Difference]: With dead ends: 6440 [2023-12-21 11:30:41,335 INFO L226 Difference]: Without dead ends: 5350 [2023-12-21 11:30:41,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:30:41,339 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 1575 mSDsluCounter, 3019 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 3486 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:41,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 3486 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:30:41,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5350 states. [2023-12-21 11:30:41,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5350 to 2293. [2023-12-21 11:30:41,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2293 states, 2292 states have (on average 1.6845549738219896) internal successors, (3861), 2292 states have internal predecessors, (3861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:41,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2293 states to 2293 states and 3861 transitions. [2023-12-21 11:30:41,426 INFO L78 Accepts]: Start accepts. Automaton has 2293 states and 3861 transitions. Word has length 127 [2023-12-21 11:30:41,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:41,426 INFO L495 AbstractCegarLoop]: Abstraction has 2293 states and 3861 transitions. [2023-12-21 11:30:41,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:41,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2293 states and 3861 transitions. [2023-12-21 11:30:41,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-21 11:30:41,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:41,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:41,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:30:41,429 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:41,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:41,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1327593618, now seen corresponding path program 1 times [2023-12-21 11:30:41,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:41,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349210450] [2023-12-21 11:30:41,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:41,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:30:41,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:41,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349210450] [2023-12-21 11:30:41,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349210450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:41,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:30:41,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:30:41,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847890940] [2023-12-21 11:30:41,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:41,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:30:41,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:41,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:30:41,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:30:41,547 INFO L87 Difference]: Start difference. First operand 2293 states and 3861 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:41,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:41,638 INFO L93 Difference]: Finished difference Result 6650 states and 11312 transitions. [2023-12-21 11:30:41,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:30:41,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2023-12-21 11:30:41,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:41,650 INFO L225 Difference]: With dead ends: 6650 [2023-12-21 11:30:41,651 INFO L226 Difference]: Without dead ends: 4547 [2023-12-21 11:30:41,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:30:41,655 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 453 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:41,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1392 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:30:41,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4547 states. [2023-12-21 11:30:41,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4547 to 3403. [2023-12-21 11:30:41,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3403 states, 3402 states have (on average 1.6901822457378013) internal successors, (5750), 3402 states have internal predecessors, (5750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:41,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 5750 transitions. [2023-12-21 11:30:41,742 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 5750 transitions. Word has length 128 [2023-12-21 11:30:41,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:41,742 INFO L495 AbstractCegarLoop]: Abstraction has 3403 states and 5750 transitions. [2023-12-21 11:30:41,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:41,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 5750 transitions. [2023-12-21 11:30:41,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 11:30:41,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:41,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:41,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:30:41,745 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:41,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:41,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1731518874, now seen corresponding path program 1 times [2023-12-21 11:30:41,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:41,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051546314] [2023-12-21 11:30:41,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:41,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:30:41,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:41,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051546314] [2023-12-21 11:30:41,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051546314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:41,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:30:41,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:30:41,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496629843] [2023-12-21 11:30:41,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:41,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:30:41,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:41,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:30:41,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:30:41,847 INFO L87 Difference]: Start difference. First operand 3403 states and 5750 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:41,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:41,954 INFO L93 Difference]: Finished difference Result 9930 states and 16870 transitions. [2023-12-21 11:30:41,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:30:41,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2023-12-21 11:30:41,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:41,974 INFO L225 Difference]: With dead ends: 9930 [2023-12-21 11:30:41,975 INFO L226 Difference]: Without dead ends: 6717 [2023-12-21 11:30:41,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:30:41,984 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 453 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:41,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1412 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:30:41,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6717 states. [2023-12-21 11:30:42,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6717 to 5036. [2023-12-21 11:30:42,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5036 states, 5035 states have (on average 1.6883813306852036) internal successors, (8501), 5035 states have internal predecessors, (8501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5036 states to 5036 states and 8501 transitions. [2023-12-21 11:30:42,151 INFO L78 Accepts]: Start accepts. Automaton has 5036 states and 8501 transitions. Word has length 129 [2023-12-21 11:30:42,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:42,152 INFO L495 AbstractCegarLoop]: Abstraction has 5036 states and 8501 transitions. [2023-12-21 11:30:42,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:42,152 INFO L276 IsEmpty]: Start isEmpty. Operand 5036 states and 8501 transitions. [2023-12-21 11:30:42,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:30:42,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:42,154 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:42,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:30:42,154 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:42,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:42,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1445377878, now seen corresponding path program 1 times [2023-12-21 11:30:42,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:42,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327207567] [2023-12-21 11:30:42,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:42,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:30:42,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:42,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327207567] [2023-12-21 11:30:42,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327207567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:42,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:30:42,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:30:42,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797458129] [2023-12-21 11:30:42,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:42,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:30:42,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:42,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:30:42,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:30:42,217 INFO L87 Difference]: Start difference. First operand 5036 states and 8501 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:42,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:42,297 INFO L93 Difference]: Finished difference Result 11263 states and 19137 transitions. [2023-12-21 11:30:42,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:30:42,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2023-12-21 11:30:42,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:42,315 INFO L225 Difference]: With dead ends: 11263 [2023-12-21 11:30:42,315 INFO L226 Difference]: Without dead ends: 7793 [2023-12-21 11:30:42,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:30:42,321 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 137 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:42,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1033 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:30:42,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7793 states. [2023-12-21 11:30:42,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7793 to 7791. [2023-12-21 11:30:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7791 states, 7790 states have (on average 1.6851091142490373) internal successors, (13127), 7790 states have internal predecessors, (13127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:42,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7791 states to 7791 states and 13127 transitions. [2023-12-21 11:30:42,449 INFO L78 Accepts]: Start accepts. Automaton has 7791 states and 13127 transitions. Word has length 130 [2023-12-21 11:30:42,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:42,449 INFO L495 AbstractCegarLoop]: Abstraction has 7791 states and 13127 transitions. [2023-12-21 11:30:42,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:42,449 INFO L276 IsEmpty]: Start isEmpty. Operand 7791 states and 13127 transitions. [2023-12-21 11:30:42,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:30:42,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:42,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:42,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:30:42,451 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:42,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:42,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2080177367, now seen corresponding path program 1 times [2023-12-21 11:30:42,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:42,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366808647] [2023-12-21 11:30:42,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:42,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:30:42,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:42,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366808647] [2023-12-21 11:30:42,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366808647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:42,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:30:42,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:30:42,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31003691] [2023-12-21 11:30:42,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:42,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:30:42,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:42,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:30:42,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:30:42,537 INFO L87 Difference]: Start difference. First operand 7791 states and 13127 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:42,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:42,765 INFO L93 Difference]: Finished difference Result 23156 states and 39212 transitions. [2023-12-21 11:30:42,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:30:42,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2023-12-21 11:30:42,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:42,790 INFO L225 Difference]: With dead ends: 23156 [2023-12-21 11:30:42,790 INFO L226 Difference]: Without dead ends: 15557 [2023-12-21 11:30:42,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:30:42,801 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 451 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:42,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 1506 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:30:42,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15557 states. [2023-12-21 11:30:42,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15557 to 11618. [2023-12-21 11:30:43,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11618 states, 11617 states have (on average 1.6824481363518982) internal successors, (19545), 11617 states have internal predecessors, (19545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:43,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11618 states to 11618 states and 19545 transitions. [2023-12-21 11:30:43,047 INFO L78 Accepts]: Start accepts. Automaton has 11618 states and 19545 transitions. Word has length 130 [2023-12-21 11:30:43,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:43,047 INFO L495 AbstractCegarLoop]: Abstraction has 11618 states and 19545 transitions. [2023-12-21 11:30:43,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:43,048 INFO L276 IsEmpty]: Start isEmpty. Operand 11618 states and 19545 transitions. [2023-12-21 11:30:43,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:30:43,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:43,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:43,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:30:43,050 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:43,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:43,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1116412873, now seen corresponding path program 1 times [2023-12-21 11:30:43,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:43,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571343389] [2023-12-21 11:30:43,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:43,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:30:43,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:43,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571343389] [2023-12-21 11:30:43,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571343389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:43,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:30:43,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:30:43,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490144594] [2023-12-21 11:30:43,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:43,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:30:43,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:43,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:30:43,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:30:43,112 INFO L87 Difference]: Start difference. First operand 11618 states and 19545 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:43,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:43,318 INFO L93 Difference]: Finished difference Result 23335 states and 39299 transitions. [2023-12-21 11:30:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:30:43,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2023-12-21 11:30:43,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:43,351 INFO L225 Difference]: With dead ends: 23335 [2023-12-21 11:30:43,351 INFO L226 Difference]: Without dead ends: 16815 [2023-12-21 11:30:43,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:30:43,366 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 116 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:43,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 975 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:30:43,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16815 states. [2023-12-21 11:30:43,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16815 to 16813. [2023-12-21 11:30:43,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16813 states, 16812 states have (on average 1.671960504401618) internal successors, (28109), 16812 states have internal predecessors, (28109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:43,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16813 states to 16813 states and 28109 transitions. [2023-12-21 11:30:43,804 INFO L78 Accepts]: Start accepts. Automaton has 16813 states and 28109 transitions. Word has length 130 [2023-12-21 11:30:43,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:43,804 INFO L495 AbstractCegarLoop]: Abstraction has 16813 states and 28109 transitions. [2023-12-21 11:30:43,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:43,804 INFO L276 IsEmpty]: Start isEmpty. Operand 16813 states and 28109 transitions. [2023-12-21 11:30:43,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:30:43,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:43,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:43,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:30:43,806 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:43,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:43,806 INFO L85 PathProgramCache]: Analyzing trace with hash 354488248, now seen corresponding path program 1 times [2023-12-21 11:30:43,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:43,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351493325] [2023-12-21 11:30:43,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:43,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:43,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:30:43,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:43,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351493325] [2023-12-21 11:30:43,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351493325] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:43,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:30:43,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:30:43,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572722950] [2023-12-21 11:30:43,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:43,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:30:43,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:43,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:30:43,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:30:43,874 INFO L87 Difference]: Start difference. First operand 16813 states and 28109 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:44,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:44,388 INFO L93 Difference]: Finished difference Result 37415 states and 62637 transitions. [2023-12-21 11:30:44,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:30:44,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2023-12-21 11:30:44,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:44,440 INFO L225 Difference]: With dead ends: 37415 [2023-12-21 11:30:44,440 INFO L226 Difference]: Without dead ends: 25694 [2023-12-21 11:30:44,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:30:44,458 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 123 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:44,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1003 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:30:44,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25694 states. [2023-12-21 11:30:44,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25694 to 25692. [2023-12-21 11:30:44,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25692 states, 25691 states have (on average 1.6602312093729321) internal successors, (42653), 25691 states have internal predecessors, (42653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25692 states to 25692 states and 42653 transitions. [2023-12-21 11:30:44,963 INFO L78 Accepts]: Start accepts. Automaton has 25692 states and 42653 transitions. Word has length 130 [2023-12-21 11:30:44,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:44,963 INFO L495 AbstractCegarLoop]: Abstraction has 25692 states and 42653 transitions. [2023-12-21 11:30:44,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:44,963 INFO L276 IsEmpty]: Start isEmpty. Operand 25692 states and 42653 transitions. [2023-12-21 11:30:44,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 11:30:44,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:44,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:44,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:30:44,965 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:44,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:44,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1808950617, now seen corresponding path program 1 times [2023-12-21 11:30:44,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:44,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951700553] [2023-12-21 11:30:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:44,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:30:45,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:45,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951700553] [2023-12-21 11:30:45,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951700553] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:45,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:30:45,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:30:45,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137579727] [2023-12-21 11:30:45,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:45,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:30:45,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:45,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:30:45,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:30:45,153 INFO L87 Difference]: Start difference. First operand 25692 states and 42653 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:45,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:45,737 INFO L93 Difference]: Finished difference Result 57237 states and 95088 transitions. [2023-12-21 11:30:45,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:30:45,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2023-12-21 11:30:45,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:45,802 INFO L225 Difference]: With dead ends: 57237 [2023-12-21 11:30:45,802 INFO L226 Difference]: Without dead ends: 39167 [2023-12-21 11:30:45,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:30:45,824 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 130 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:45,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1032 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:30:45,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39167 states. [2023-12-21 11:30:46,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39167 to 39165. [2023-12-21 11:30:46,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39165 states, 39164 states have (on average 1.6454396895107752) internal successors, (64442), 39164 states have internal predecessors, (64442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:46,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39165 states to 39165 states and 64442 transitions. [2023-12-21 11:30:46,630 INFO L78 Accepts]: Start accepts. Automaton has 39165 states and 64442 transitions. Word has length 130 [2023-12-21 11:30:46,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:46,631 INFO L495 AbstractCegarLoop]: Abstraction has 39165 states and 64442 transitions. [2023-12-21 11:30:46,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:46,631 INFO L276 IsEmpty]: Start isEmpty. Operand 39165 states and 64442 transitions. [2023-12-21 11:30:46,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 11:30:46,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:46,632 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:46,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:30:46,632 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:46,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:46,633 INFO L85 PathProgramCache]: Analyzing trace with hash 9140515, now seen corresponding path program 1 times [2023-12-21 11:30:46,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:46,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143151828] [2023-12-21 11:30:46,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:46,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:46,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:30:46,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:46,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143151828] [2023-12-21 11:30:46,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143151828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:46,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:30:46,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:30:46,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239110059] [2023-12-21 11:30:46,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:46,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:30:46,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:46,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:30:46,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:30:46,743 INFO L87 Difference]: Start difference. First operand 39165 states and 64442 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:47,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:47,896 INFO L93 Difference]: Finished difference Result 126905 states and 209400 transitions. [2023-12-21 11:30:47,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:30:47,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2023-12-21 11:30:47,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:48,068 INFO L225 Difference]: With dead ends: 126905 [2023-12-21 11:30:48,068 INFO L226 Difference]: Without dead ends: 87953 [2023-12-21 11:30:48,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:30:48,114 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 449 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:48,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1493 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:30:48,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87953 states. [2023-12-21 11:30:49,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87953 to 63334. [2023-12-21 11:30:49,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63334 states, 63333 states have (on average 1.638245464449813) internal successors, (103755), 63333 states have internal predecessors, (103755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:49,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63334 states to 63334 states and 103755 transitions. [2023-12-21 11:30:49,910 INFO L78 Accepts]: Start accepts. Automaton has 63334 states and 103755 transitions. Word has length 131 [2023-12-21 11:30:49,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:49,911 INFO L495 AbstractCegarLoop]: Abstraction has 63334 states and 103755 transitions. [2023-12-21 11:30:49,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:49,911 INFO L276 IsEmpty]: Start isEmpty. Operand 63334 states and 103755 transitions. [2023-12-21 11:30:49,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-21 11:30:49,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:49,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:49,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:30:49,912 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:49,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:49,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1283204917, now seen corresponding path program 1 times [2023-12-21 11:30:49,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:49,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670240603] [2023-12-21 11:30:49,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:49,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:30:50,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:50,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670240603] [2023-12-21 11:30:50,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670240603] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:50,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:30:50,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:30:50,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110213183] [2023-12-21 11:30:50,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:50,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:30:50,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:50,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:30:50,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:30:50,134 INFO L87 Difference]: Start difference. First operand 63334 states and 103755 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:51,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:51,279 INFO L93 Difference]: Finished difference Result 126457 states and 207169 transitions. [2023-12-21 11:30:51,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:30:51,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2023-12-21 11:30:51,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:51,373 INFO L225 Difference]: With dead ends: 126457 [2023-12-21 11:30:51,373 INFO L226 Difference]: Without dead ends: 63336 [2023-12-21 11:30:51,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:30:51,407 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 121 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 2203 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:51,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 2203 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:30:51,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63336 states. [2023-12-21 11:30:52,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63336 to 63334. [2023-12-21 11:30:52,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63334 states, 63333 states have (on average 1.6283769914578499) internal successors, (103130), 63333 states have internal predecessors, (103130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63334 states to 63334 states and 103130 transitions. [2023-12-21 11:30:52,675 INFO L78 Accepts]: Start accepts. Automaton has 63334 states and 103130 transitions. Word has length 133 [2023-12-21 11:30:52,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:52,675 INFO L495 AbstractCegarLoop]: Abstraction has 63334 states and 103130 transitions. [2023-12-21 11:30:52,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:52,676 INFO L276 IsEmpty]: Start isEmpty. Operand 63334 states and 103130 transitions. [2023-12-21 11:30:52,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:30:52,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:52,677 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:52,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 11:30:52,677 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:52,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:52,678 INFO L85 PathProgramCache]: Analyzing trace with hash 49875956, now seen corresponding path program 1 times [2023-12-21 11:30:52,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:52,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470572596] [2023-12-21 11:30:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:52,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:53,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:30:53,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:53,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470572596] [2023-12-21 11:30:53,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470572596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:53,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:30:53,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:30:53,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283335061] [2023-12-21 11:30:53,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:53,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:30:53,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:53,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:30:53,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:30:53,047 INFO L87 Difference]: Start difference. First operand 63334 states and 103130 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:54,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:54,434 INFO L93 Difference]: Finished difference Result 185239 states and 302101 transitions. [2023-12-21 11:30:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:30:54,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-12-21 11:30:54,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:54,722 INFO L225 Difference]: With dead ends: 185239 [2023-12-21 11:30:54,722 INFO L226 Difference]: Without dead ends: 122118 [2023-12-21 11:30:54,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:30:54,795 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 235 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:54,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1779 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:30:54,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122118 states. [2023-12-21 11:30:56,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122118 to 122116. [2023-12-21 11:30:56,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122116 states, 122115 states have (on average 1.6156491831470334) internal successors, (197295), 122115 states have internal predecessors, (197295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:57,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122116 states to 122116 states and 197295 transitions. [2023-12-21 11:30:57,119 INFO L78 Accepts]: Start accepts. Automaton has 122116 states and 197295 transitions. Word has length 136 [2023-12-21 11:30:57,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:57,132 INFO L495 AbstractCegarLoop]: Abstraction has 122116 states and 197295 transitions. [2023-12-21 11:30:57,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:57,148 INFO L276 IsEmpty]: Start isEmpty. Operand 122116 states and 197295 transitions. [2023-12-21 11:30:57,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 11:30:57,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:57,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:30:57,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 11:30:57,150 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:57,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:57,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1531604546, now seen corresponding path program 1 times [2023-12-21 11:30:57,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:57,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287632968] [2023-12-21 11:30:57,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:57,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:57,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:30:57,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:57,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287632968] [2023-12-21 11:30:57,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287632968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:30:57,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:30:57,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:30:57,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480817992] [2023-12-21 11:30:57,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:30:57,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:30:57,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:57,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:30:57,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:30:57,592 INFO L87 Difference]: Start difference. First operand 122116 states and 197295 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:30:58,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:58,501 INFO L93 Difference]: Finished difference Result 127926 states and 205040 transitions. [2023-12-21 11:30:58,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:30:58,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2023-12-21 11:30:58,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:58,708 INFO L225 Difference]: With dead ends: 127926 [2023-12-21 11:30:58,708 INFO L226 Difference]: Without dead ends: 127924 [2023-12-21 11:30:58,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:30:58,734 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 1 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:58,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1384 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:30:58,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127924 states. [2023-12-21 11:31:00,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127924 to 125988. [2023-12-21 11:31:00,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125988 states, 125987 states have (on average 1.5965139260399883) internal successors, (201140), 125987 states have internal predecessors, (201140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:31:01,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125988 states to 125988 states and 201140 transitions. [2023-12-21 11:31:01,221 INFO L78 Accepts]: Start accepts. Automaton has 125988 states and 201140 transitions. Word has length 137 [2023-12-21 11:31:01,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:31:01,222 INFO L495 AbstractCegarLoop]: Abstraction has 125988 states and 201140 transitions. [2023-12-21 11:31:01,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:31:01,222 INFO L276 IsEmpty]: Start isEmpty. Operand 125988 states and 201140 transitions. [2023-12-21 11:31:01,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-21 11:31:01,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:31:01,240 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:31:01,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 11:31:01,240 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:31:01,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:31:01,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1296327942, now seen corresponding path program 1 times [2023-12-21 11:31:01,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:31:01,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758728156] [2023-12-21 11:31:01,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:31:01,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:31:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:01,317 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:31:01,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:31:01,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758728156] [2023-12-21 11:31:01,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758728156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:31:01,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:31:01,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:31:01,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237584231] [2023-12-21 11:31:01,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:31:01,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:31:01,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:31:01,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:31:01,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:31:01,319 INFO L87 Difference]: Start difference. First operand 125988 states and 201140 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:31:03,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:31:03,886 INFO L93 Difference]: Finished difference Result 376945 states and 601399 transitions. [2023-12-21 11:31:03,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:31:03,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2023-12-21 11:31:03,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:31:04,479 INFO L225 Difference]: With dead ends: 376945 [2023-12-21 11:31:04,479 INFO L226 Difference]: Without dead ends: 251015 [2023-12-21 11:31:04,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:31:04,558 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 348 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:31:04,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 1178 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:31:04,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251015 states. [2023-12-21 11:31:08,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251015 to 251013. [2023-12-21 11:31:09,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251013 states, 251012 states have (on average 1.585991904769493) internal successors, (398103), 251012 states have internal predecessors, (398103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:31:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251013 states to 251013 states and 398103 transitions. [2023-12-21 11:31:09,872 INFO L78 Accepts]: Start accepts. Automaton has 251013 states and 398103 transitions. Word has length 173 [2023-12-21 11:31:09,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:31:09,872 INFO L495 AbstractCegarLoop]: Abstraction has 251013 states and 398103 transitions. [2023-12-21 11:31:09,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:31:09,872 INFO L276 IsEmpty]: Start isEmpty. Operand 251013 states and 398103 transitions. [2023-12-21 11:31:09,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-21 11:31:09,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:31:09,878 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:31:09,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 11:31:09,878 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:31:09,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:31:09,878 INFO L85 PathProgramCache]: Analyzing trace with hash 436848603, now seen corresponding path program 1 times [2023-12-21 11:31:09,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:31:09,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633653759] [2023-12-21 11:31:09,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:31:09,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:31:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:09,959 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 11:31:09,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:31:09,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633653759] [2023-12-21 11:31:09,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633653759] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:31:09,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:31:09,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:31:09,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250007718] [2023-12-21 11:31:09,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:31:09,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:31:09,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:31:09,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:31:09,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:31:09,961 INFO L87 Difference]: Start difference. First operand 251013 states and 398103 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:31:15,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:31:15,096 INFO L93 Difference]: Finished difference Result 751103 states and 1190454 transitions. [2023-12-21 11:31:15,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:31:15,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 173 [2023-12-21 11:31:15,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:31:16,131 INFO L225 Difference]: With dead ends: 751103 [2023-12-21 11:31:16,131 INFO L226 Difference]: Without dead ends: 500152 [2023-12-21 11:31:16,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:31:16,265 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 350 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:31:16,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1182 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:31:16,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500152 states. [2023-12-21 11:31:24,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500152 to 500150. [2023-12-21 11:31:25,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500150 states, 500149 states have (on average 1.5754125270669341) internal successors, (787941), 500149 states have internal predecessors, (787941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:31:27,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500150 states to 500150 states and 787941 transitions. [2023-12-21 11:31:27,320 INFO L78 Accepts]: Start accepts. Automaton has 500150 states and 787941 transitions. Word has length 173 [2023-12-21 11:31:27,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:31:27,320 INFO L495 AbstractCegarLoop]: Abstraction has 500150 states and 787941 transitions. [2023-12-21 11:31:27,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:31:27,321 INFO L276 IsEmpty]: Start isEmpty. Operand 500150 states and 787941 transitions. [2023-12-21 11:31:27,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-21 11:31:27,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:31:27,330 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:31:27,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 11:31:27,330 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:31:27,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:31:27,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1907749724, now seen corresponding path program 1 times [2023-12-21 11:31:27,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:31:27,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263402802] [2023-12-21 11:31:27,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:31:27,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:31:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:27,444 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 11:31:27,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:31:27,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263402802] [2023-12-21 11:31:27,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263402802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:31:27,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:31:27,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:31:27,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889055195] [2023-12-21 11:31:27,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:31:27,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:31:27,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:31:27,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:31:27,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:31:27,446 INFO L87 Difference]: Start difference. First operand 500150 states and 787941 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:31:39,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:31:39,187 INFO L93 Difference]: Finished difference Result 1496584 states and 2356128 transitions. [2023-12-21 11:31:39,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:31:39,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2023-12-21 11:31:39,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:31:41,576 INFO L225 Difference]: With dead ends: 1496584 [2023-12-21 11:31:41,576 INFO L226 Difference]: Without dead ends: 996594 [2023-12-21 11:31:42,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:31:42,228 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 361 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:31:42,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 1192 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:31:43,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996594 states. [2023-12-21 11:32:00,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996594 to 996592. [2023-12-21 11:32:01,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996592 states, 996591 states have (on average 1.5647642814354132) internal successors, (1559430), 996591 states have internal predecessors, (1559430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:32:05,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996592 states to 996592 states and 1559430 transitions. [2023-12-21 11:32:05,445 INFO L78 Accepts]: Start accepts. Automaton has 996592 states and 1559430 transitions. Word has length 173 [2023-12-21 11:32:05,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:32:05,446 INFO L495 AbstractCegarLoop]: Abstraction has 996592 states and 1559430 transitions. [2023-12-21 11:32:05,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:32:05,446 INFO L276 IsEmpty]: Start isEmpty. Operand 996592 states and 1559430 transitions. [2023-12-21 11:32:05,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-21 11:32:05,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:32:05,463 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:32:05,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 11:32:05,464 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:32:05,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:32:05,464 INFO L85 PathProgramCache]: Analyzing trace with hash -932755203, now seen corresponding path program 1 times [2023-12-21 11:32:05,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:32:05,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549464856] [2023-12-21 11:32:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:32:05,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:32:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,525 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 11:32:05,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:32:05,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549464856] [2023-12-21 11:32:05,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549464856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:32:05,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:32:05,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:32:05,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871048149] [2023-12-21 11:32:05,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:32:05,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:32:05,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:32:05,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:32:05,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:32:05,526 INFO L87 Difference]: Start difference. First operand 996592 states and 1559430 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:32:29,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:32:29,196 INFO L93 Difference]: Finished difference Result 2982068 states and 4662944 transitions. [2023-12-21 11:32:29,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:32:29,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 173 [2023-12-21 11:32:29,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:32:36,553 INFO L225 Difference]: With dead ends: 2982068 [2023-12-21 11:32:36,554 INFO L226 Difference]: Without dead ends: 1985718 [2023-12-21 11:32:38,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:32:38,255 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 328 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:32:38,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1158 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:32:40,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985718 states.