/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/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:23:13,236 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:23:13,303 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 14:23:13,310 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:23:13,310 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:23:13,339 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:23:13,339 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:23:13,339 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:23:13,340 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:23:13,342 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:23:13,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:23:13,343 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:23:13,343 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:23:13,344 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:23:13,344 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:23:13,344 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:23:13,344 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:23:13,344 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:23:13,345 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:23:13,345 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:23:13,345 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:23:13,346 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:23:13,346 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:23:13,346 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:23:13,347 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:23:13,347 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:23:13,347 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:23:13,347 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:23:13,347 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:23:13,348 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:23:13,348 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:23:13,348 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:23:13,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:23:13,349 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:23:13,349 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:23:13,349 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:23:13,349 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:23:13,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:23:13,349 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:23:13,349 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:23:13,349 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:23:13,350 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:23:13,350 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:23:13,350 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:23:13,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:23:13,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:23:13,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:23:13,532 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:23:13,534 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:23:13,535 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label07.c [2023-12-20 14:23:14,639 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:23:14,945 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:23:14,945 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label07.c [2023-12-20 14:23:14,964 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/144328b09/a936baf38bab430a8e7ee3190ff7b04e/FLAGa2828e768 [2023-12-20 14:23:14,973 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/144328b09/a936baf38bab430a8e7ee3190ff7b04e [2023-12-20 14:23:14,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:23:14,975 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:23:14,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:23:14,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:23:14,979 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:23:14,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:23:14" (1/1) ... [2023-12-20 14:23:14,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37362ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:23:14, skipping insertion in model container [2023-12-20 14:23:14,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:23:14" (1/1) ... [2023-12-20 14:23:15,069 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:23:15,333 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label07.c[15510,15523] [2023-12-20 14:23:15,352 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label07.c[16352,16365] [2023-12-20 14:23:15,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:23:15,878 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:23:15,949 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label07.c[15510,15523] [2023-12-20 14:23:15,950 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label07.c[16352,16365] [2023-12-20 14:23:16,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:23:16,241 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:23:16,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:23:16 WrapperNode [2023-12-20 14:23:16,242 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:23:16,244 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:23:16,244 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:23:16,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:23:16,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:23:16" (1/1) ... [2023-12-20 14:23:16,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:23:16" (1/1) ... [2023-12-20 14:23:16,472 INFO L138 Inliner]: procedures = 38, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5151 [2023-12-20 14:23:16,472 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:23:16,473 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:23:16,473 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:23:16,474 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:23:16,483 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:23:16" (1/1) ... [2023-12-20 14:23:16,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:23:16" (1/1) ... [2023-12-20 14:23:16,519 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:23:16" (1/1) ... [2023-12-20 14:23:16,701 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]. [2023-12-20 14:23:16,701 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:23:16" (1/1) ... [2023-12-20 14:23:16,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:23:16" (1/1) ... [2023-12-20 14:23:16,855 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:23:16" (1/1) ... [2023-12-20 14:23:16,878 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:23:16" (1/1) ... [2023-12-20 14:23:16,896 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:23:16" (1/1) ... [2023-12-20 14:23:16,909 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:23:16" (1/1) ... [2023-12-20 14:23:16,972 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:23:16,973 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:23:16,973 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:23:16,974 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:23:16,975 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:23:16" (1/1) ... [2023-12-20 14:23:16,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:23:16,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:23:17,015 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) [2023-12-20 14:23:17,029 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 [2023-12-20 14:23:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:23:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:23:17,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:23:17,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:23:17,121 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:23:17,122 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:23:20,159 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:23:20,214 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:23:20,215 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 14:23:20,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:23:20 BoogieIcfgContainer [2023-12-20 14:23:20,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:23:20,216 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:23:20,217 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:23:20,219 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:23:20,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:23:14" (1/3) ... [2023-12-20 14:23:20,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe4b8e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:23:20, skipping insertion in model container [2023-12-20 14:23:20,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:23:16" (2/3) ... [2023-12-20 14:23:20,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe4b8e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:23:20, skipping insertion in model container [2023-12-20 14:23:20,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:23:20" (3/3) ... [2023-12-20 14:23:20,220 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label07.c [2023-12-20 14:23:20,232 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:23:20,232 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:23:20,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:23:20,296 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;@3236d677, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:23:20,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:23:20,306 INFO L276 IsEmpty]: Start isEmpty. Operand has 851 states, 848 states have (on average 1.9728773584905661) internal successors, (1673), 850 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:20,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-20 14:23:20,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:20,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-20 14:23:20,311 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:20,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:20,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1079698779, now seen corresponding path program 1 times [2023-12-20 14:23:20,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:20,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323094184] [2023-12-20 14:23:20,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:20,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:20,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:20,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:20,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323094184] [2023-12-20 14:23:20,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323094184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:20,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:20,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 14:23:20,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090620500] [2023-12-20 14:23:20,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:20,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:23:20,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:20,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:23:20,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:20,477 INFO L87 Difference]: Start difference. First operand has 851 states, 848 states have (on average 1.9728773584905661) internal successors, (1673), 850 states have internal predecessors, (1673), 0 states have call successors, (0), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:23,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:23,441 INFO L93 Difference]: Finished difference Result 2411 states and 4760 transitions. [2023-12-20 14:23:23,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:23:23,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-12-20 14:23:23,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:23,469 INFO L225 Difference]: With dead ends: 2411 [2023-12-20 14:23:23,469 INFO L226 Difference]: Without dead ends: 1598 [2023-12-20 14:23:23,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:23,478 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 978 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:23,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 592 Invalid, 2870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2279 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 14:23:23,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2023-12-20 14:23:23,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1598. [2023-12-20 14:23:23,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1596 states have (on average 1.6472431077694236) internal successors, (2629), 1597 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:23,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2629 transitions. [2023-12-20 14:23:23,577 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2629 transitions. Word has length 6 [2023-12-20 14:23:23,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:23,578 INFO L495 AbstractCegarLoop]: Abstraction has 1598 states and 2629 transitions. [2023-12-20 14:23:23,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:23,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2629 transitions. [2023-12-20 14:23:23,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-20 14:23:23,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:23,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:23,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:23:23,579 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:23,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:23,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1430428717, now seen corresponding path program 1 times [2023-12-20 14:23:23,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:23,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705060853] [2023-12-20 14:23:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:23,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:23,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:23,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:23,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705060853] [2023-12-20 14:23:23,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705060853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:23,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:23,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:23:23,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78180318] [2023-12-20 14:23:23,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:23,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:23:23,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:23,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:23:23,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:23:23,771 INFO L87 Difference]: Start difference. First operand 1598 states and 2629 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:23,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:23,826 INFO L93 Difference]: Finished difference Result 1650 states and 2711 transitions. [2023-12-20 14:23:23,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:23:23,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-20 14:23:23,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:23,831 INFO L225 Difference]: With dead ends: 1650 [2023-12-20 14:23:23,832 INFO L226 Difference]: Without dead ends: 1598 [2023-12-20 14:23:23,832 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 [2023-12-20 14:23:23,833 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 0 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4753 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:23,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4753 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:23:23,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2023-12-20 14:23:23,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1598. [2023-12-20 14:23:23,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1596 states have (on average 1.6221804511278195) internal successors, (2589), 1597 states have internal predecessors, (2589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:23,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2589 transitions. [2023-12-20 14:23:23,860 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2589 transitions. Word has length 23 [2023-12-20 14:23:23,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:23,860 INFO L495 AbstractCegarLoop]: Abstraction has 1598 states and 2589 transitions. [2023-12-20 14:23:23,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:23,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2589 transitions. [2023-12-20 14:23:23,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 14:23:23,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:23,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:23,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:23:23,866 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:23,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:23,872 INFO L85 PathProgramCache]: Analyzing trace with hash 270250855, now seen corresponding path program 1 times [2023-12-20 14:23:23,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:23,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286879268] [2023-12-20 14:23:23,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:23,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:24,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:24,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286879268] [2023-12-20 14:23:24,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286879268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:24,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:24,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:23:24,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534365766] [2023-12-20 14:23:24,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:24,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:23:24,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:24,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:23:24,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:23:24,076 INFO L87 Difference]: Start difference. First operand 1598 states and 2589 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:24,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:24,305 INFO L93 Difference]: Finished difference Result 2186 states and 3537 transitions. [2023-12-20 14:23:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 14:23:24,306 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 14:23:24,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:24,312 INFO L225 Difference]: With dead ends: 2186 [2023-12-20 14:23:24,312 INFO L226 Difference]: Without dead ends: 2137 [2023-12-20 14:23:24,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:23:24,313 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 9829 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9829 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:24,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9829 Valid, 3039 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:23:24,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2023-12-20 14:23:24,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 1645. [2023-12-20 14:23:24,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1643 states have (on average 1.6220328667072428) internal successors, (2665), 1644 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:24,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2665 transitions. [2023-12-20 14:23:24,339 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2665 transitions. Word has length 62 [2023-12-20 14:23:24,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:24,339 INFO L495 AbstractCegarLoop]: Abstraction has 1645 states and 2665 transitions. [2023-12-20 14:23:24,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:24,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2665 transitions. [2023-12-20 14:23:24,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 14:23:24,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:24,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:24,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:23:24,341 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:24,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:24,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1880202711, now seen corresponding path program 1 times [2023-12-20 14:23:24,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:24,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744523809] [2023-12-20 14:23:24,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:24,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:24,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:24,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:24,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744523809] [2023-12-20 14:23:24,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744523809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:24,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:24,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:23:24,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139421145] [2023-12-20 14:23:24,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:24,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:23:24,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:24,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:23:24,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:24,394 INFO L87 Difference]: Start difference. First operand 1645 states and 2665 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:24,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:24,425 INFO L93 Difference]: Finished difference Result 1826 states and 2956 transitions. [2023-12-20 14:23:24,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:23:24,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 14:23:24,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:24,430 INFO L225 Difference]: With dead ends: 1826 [2023-12-20 14:23:24,430 INFO L226 Difference]: Without dead ends: 1730 [2023-12-20 14:23:24,431 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 [2023-12-20 14:23:24,432 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1490 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:24,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1626 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:23:24,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2023-12-20 14:23:24,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1726. [2023-12-20 14:23:24,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.6200696055684454) internal successors, (2793), 1725 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:24,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2793 transitions. [2023-12-20 14:23:24,456 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2793 transitions. Word has length 64 [2023-12-20 14:23:24,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:24,457 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2793 transitions. [2023-12-20 14:23:24,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:24,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2793 transitions. [2023-12-20 14:23:24,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 14:23:24,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:24,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:24,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:23:24,458 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:24,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:24,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1882347663, now seen corresponding path program 1 times [2023-12-20 14:23:24,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:24,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340571431] [2023-12-20 14:23:24,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:24,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:24,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:24,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340571431] [2023-12-20 14:23:24,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340571431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:24,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:24,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:23:24,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120430652] [2023-12-20 14:23:24,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:24,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:23:24,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:24,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:23:24,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:23:24,716 INFO L87 Difference]: Start difference. First operand 1726 states and 2793 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:24,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:24,913 INFO L93 Difference]: Finished difference Result 1905 states and 3077 transitions. [2023-12-20 14:23:24,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:23:24,914 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 14:23:24,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:24,919 INFO L225 Difference]: With dead ends: 1905 [2023-12-20 14:23:24,919 INFO L226 Difference]: Without dead ends: 1728 [2023-12-20 14:23:24,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:23:24,920 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 8998 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8998 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:24,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8998 Valid, 1924 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:23:24,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2023-12-20 14:23:24,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1726. [2023-12-20 14:23:24,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.618909512761021) internal successors, (2791), 1725 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:24,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2791 transitions. [2023-12-20 14:23:24,953 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2791 transitions. Word has length 64 [2023-12-20 14:23:24,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:24,953 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2791 transitions. [2023-12-20 14:23:24,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:24,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2791 transitions. [2023-12-20 14:23:24,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 14:23:24,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:24,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:24,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:23:24,955 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:24,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:24,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1905436323, now seen corresponding path program 1 times [2023-12-20 14:23:24,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:24,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914378314] [2023-12-20 14:23:24,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:24,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:25,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:25,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914378314] [2023-12-20 14:23:25,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914378314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:25,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:25,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:23:25,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124420744] [2023-12-20 14:23:25,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:25,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:23:25,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:25,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:23:25,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:23:25,072 INFO L87 Difference]: Start difference. First operand 1726 states and 2791 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:25,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:25,104 INFO L93 Difference]: Finished difference Result 1734 states and 2800 transitions. [2023-12-20 14:23:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:23:25,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 14:23:25,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:25,109 INFO L225 Difference]: With dead ends: 1734 [2023-12-20 14:23:25,109 INFO L226 Difference]: Without dead ends: 1732 [2023-12-20 14:23:25,110 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 [2023-12-20 14:23:25,110 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 1 mSDsluCounter, 3108 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4666 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:25,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4666 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:23:25,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2023-12-20 14:23:25,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1730. [2023-12-20 14:23:25,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1728 states have (on average 1.6168981481481481) internal successors, (2794), 1729 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:25,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2794 transitions. [2023-12-20 14:23:25,134 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2794 transitions. Word has length 65 [2023-12-20 14:23:25,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:25,134 INFO L495 AbstractCegarLoop]: Abstraction has 1730 states and 2794 transitions. [2023-12-20 14:23:25,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:25,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2794 transitions. [2023-12-20 14:23:25,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:23:25,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:25,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:25,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:23:25,135 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:25,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:25,135 INFO L85 PathProgramCache]: Analyzing trace with hash -280645265, now seen corresponding path program 1 times [2023-12-20 14:23:25,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:25,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321319652] [2023-12-20 14:23:25,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:25,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:25,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:25,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321319652] [2023-12-20 14:23:25,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321319652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:25,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:25,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:23:25,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162755976] [2023-12-20 14:23:25,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:25,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:23:25,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:25,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:23:25,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:25,173 INFO L87 Difference]: Start difference. First operand 1730 states and 2794 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:25,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:25,200 INFO L93 Difference]: Finished difference Result 2076 states and 3334 transitions. [2023-12-20 14:23:25,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:23:25,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 14:23:25,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:25,205 INFO L225 Difference]: With dead ends: 2076 [2023-12-20 14:23:25,205 INFO L226 Difference]: Without dead ends: 1895 [2023-12-20 14:23:25,206 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 [2023-12-20 14:23:25,206 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1503 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1691 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 [2023-12-20 14:23:25,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1691 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:23:25,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2023-12-20 14:23:25,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1893. [2023-12-20 14:23:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1891 states have (on average 1.6102591221575886) internal successors, (3045), 1892 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:25,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 3045 transitions. [2023-12-20 14:23:25,236 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 3045 transitions. Word has length 66 [2023-12-20 14:23:25,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:25,236 INFO L495 AbstractCegarLoop]: Abstraction has 1893 states and 3045 transitions. [2023-12-20 14:23:25,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:25,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 3045 transitions. [2023-12-20 14:23:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:23:25,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:25,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:25,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 14:23:25,237 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:25,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:25,238 INFO L85 PathProgramCache]: Analyzing trace with hash -240701329, now seen corresponding path program 1 times [2023-12-20 14:23:25,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:25,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324911602] [2023-12-20 14:23:25,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:25,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:25,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:25,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324911602] [2023-12-20 14:23:25,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324911602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:25,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:25,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:23:25,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312194824] [2023-12-20 14:23:25,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:25,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:23:25,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:25,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:23:25,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:25,274 INFO L87 Difference]: Start difference. First operand 1893 states and 3045 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:25,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:25,304 INFO L93 Difference]: Finished difference Result 2549 states and 4059 transitions. [2023-12-20 14:23:25,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:23:25,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 14:23:25,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:25,311 INFO L225 Difference]: With dead ends: 2549 [2023-12-20 14:23:25,311 INFO L226 Difference]: Without dead ends: 2205 [2023-12-20 14:23:25,312 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 [2023-12-20 14:23:25,312 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1501 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 1693 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 [2023-12-20 14:23:25,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 1693 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:23:25,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2023-12-20 14:23:25,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 2203. [2023-12-20 14:23:25,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2201 states have (on average 1.5970013630168105) internal successors, (3515), 2202 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:25,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 3515 transitions. [2023-12-20 14:23:25,349 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 3515 transitions. Word has length 66 [2023-12-20 14:23:25,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:25,349 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 3515 transitions. [2023-12-20 14:23:25,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:25,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 3515 transitions. [2023-12-20 14:23:25,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:23:25,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:25,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:25,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 14:23:25,350 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:25,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:25,350 INFO L85 PathProgramCache]: Analyzing trace with hash -866357393, now seen corresponding path program 1 times [2023-12-20 14:23:25,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:25,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985287999] [2023-12-20 14:23:25,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:25,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:25,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:25,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985287999] [2023-12-20 14:23:25,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985287999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:25,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:25,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:23:25,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211318568] [2023-12-20 14:23:25,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:25,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:23:25,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:25,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:23:25,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:25,386 INFO L87 Difference]: Start difference. First operand 2203 states and 3515 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:25,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:25,423 INFO L93 Difference]: Finished difference Result 3447 states and 5413 transitions. [2023-12-20 14:23:25,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:23:25,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 14:23:25,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:25,431 INFO L225 Difference]: With dead ends: 3447 [2023-12-20 14:23:25,431 INFO L226 Difference]: Without dead ends: 2793 [2023-12-20 14:23:25,432 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 [2023-12-20 14:23:25,432 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 1499 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1695 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 [2023-12-20 14:23:25,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 1695 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:23:25,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2793 states. [2023-12-20 14:23:25,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2793 to 2791. [2023-12-20 14:23:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2789 states have (on average 1.5743994263176766) internal successors, (4391), 2790 states have internal predecessors, (4391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:25,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 4391 transitions. [2023-12-20 14:23:25,524 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 4391 transitions. Word has length 66 [2023-12-20 14:23:25,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:25,524 INFO L495 AbstractCegarLoop]: Abstraction has 2791 states and 4391 transitions. [2023-12-20 14:23:25,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:25,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 4391 transitions. [2023-12-20 14:23:25,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:23:25,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:25,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:25,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 14:23:25,526 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:25,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:25,526 INFO L85 PathProgramCache]: Analyzing trace with hash 22376047, now seen corresponding path program 1 times [2023-12-20 14:23:25,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:25,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170729630] [2023-12-20 14:23:25,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:25,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:25,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:25,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:25,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170729630] [2023-12-20 14:23:25,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170729630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:25,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:25,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:23:25,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12960564] [2023-12-20 14:23:25,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:25,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:23:25,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:25,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:23:25,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:25,571 INFO L87 Difference]: Start difference. First operand 2791 states and 4391 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:25,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:25,633 INFO L93 Difference]: Finished difference Result 5147 states and 7929 transitions. [2023-12-20 14:23:25,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:23:25,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 14:23:25,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:25,643 INFO L225 Difference]: With dead ends: 5147 [2023-12-20 14:23:25,643 INFO L226 Difference]: Without dead ends: 3905 [2023-12-20 14:23:25,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:25,645 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 1497 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1697 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 [2023-12-20 14:23:25,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 1697 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:23:25,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3905 states. [2023-12-20 14:23:25,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3905 to 3903. [2023-12-20 14:23:25,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3903 states, 3901 states have (on average 1.5419123301717508) internal successors, (6015), 3902 states have internal predecessors, (6015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:25,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3903 states to 3903 states and 6015 transitions. [2023-12-20 14:23:25,732 INFO L78 Accepts]: Start accepts. Automaton has 3903 states and 6015 transitions. Word has length 66 [2023-12-20 14:23:25,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:25,732 INFO L495 AbstractCegarLoop]: Abstraction has 3903 states and 6015 transitions. [2023-12-20 14:23:25,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:25,733 INFO L276 IsEmpty]: Start isEmpty. Operand 3903 states and 6015 transitions. [2023-12-20 14:23:25,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:23:25,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:25,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:25,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 14:23:25,736 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:25,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:25,736 INFO L85 PathProgramCache]: Analyzing trace with hash -12062097, now seen corresponding path program 1 times [2023-12-20 14:23:25,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:25,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983515565] [2023-12-20 14:23:25,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:25,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:25,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:25,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:25,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983515565] [2023-12-20 14:23:25,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983515565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:25,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:25,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:23:25,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309069723] [2023-12-20 14:23:25,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:25,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:23:25,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:25,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:23:25,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:25,783 INFO L87 Difference]: Start difference. First operand 3903 states and 6015 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:25,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:25,886 INFO L93 Difference]: Finished difference Result 8355 states and 12577 transitions. [2023-12-20 14:23:25,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:23:25,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 14:23:25,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:25,917 INFO L225 Difference]: With dead ends: 8355 [2023-12-20 14:23:25,917 INFO L226 Difference]: Without dead ends: 6001 [2023-12-20 14:23:25,922 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 [2023-12-20 14:23:25,922 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 1505 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1697 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 [2023-12-20 14:23:25,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1697 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:23:25,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2023-12-20 14:23:26,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 5999. [2023-12-20 14:23:26,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5999 states, 5997 states have (on average 1.5019176254794064) internal successors, (9007), 5998 states have internal predecessors, (9007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:26,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5999 states to 5999 states and 9007 transitions. [2023-12-20 14:23:26,125 INFO L78 Accepts]: Start accepts. Automaton has 5999 states and 9007 transitions. Word has length 66 [2023-12-20 14:23:26,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:26,125 INFO L495 AbstractCegarLoop]: Abstraction has 5999 states and 9007 transitions. [2023-12-20 14:23:26,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:26,126 INFO L276 IsEmpty]: Start isEmpty. Operand 5999 states and 9007 transitions. [2023-12-20 14:23:26,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 14:23:26,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:26,127 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] [2023-12-20 14:23:26,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 14:23:26,127 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:26,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:26,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1491592148, now seen corresponding path program 1 times [2023-12-20 14:23:26,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:26,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768939804] [2023-12-20 14:23:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:26,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:26,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:26,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768939804] [2023-12-20 14:23:26,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768939804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:26,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:26,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:23:26,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823165140] [2023-12-20 14:23:26,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:26,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:23:26,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:26,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:23:26,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:26,182 INFO L87 Difference]: Start difference. First operand 5999 states and 9007 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:26,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:26,332 INFO L93 Difference]: Finished difference Result 10614 states and 15861 transitions. [2023-12-20 14:23:26,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:23:26,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-20 14:23:26,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:26,347 INFO L225 Difference]: With dead ends: 10614 [2023-12-20 14:23:26,348 INFO L226 Difference]: Without dead ends: 8115 [2023-12-20 14:23:26,352 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 [2023-12-20 14:23:26,352 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 1504 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:26,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:23:26,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8115 states. [2023-12-20 14:23:26,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8115 to 8113. [2023-12-20 14:23:26,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8113 states, 8111 states have (on average 1.485513500184934) internal successors, (12049), 8112 states have internal predecessors, (12049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:26,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8113 states to 8113 states and 12049 transitions. [2023-12-20 14:23:26,599 INFO L78 Accepts]: Start accepts. Automaton has 8113 states and 12049 transitions. Word has length 68 [2023-12-20 14:23:26,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:26,600 INFO L495 AbstractCegarLoop]: Abstraction has 8113 states and 12049 transitions. [2023-12-20 14:23:26,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:26,600 INFO L276 IsEmpty]: Start isEmpty. Operand 8113 states and 12049 transitions. [2023-12-20 14:23:26,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 14:23:26,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:26,601 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 14:23:26,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 14:23:26,601 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:26,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:26,601 INFO L85 PathProgramCache]: Analyzing trace with hash 576573625, now seen corresponding path program 1 times [2023-12-20 14:23:26,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:26,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486614180] [2023-12-20 14:23:26,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:26,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-20 14:23:26,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:26,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486614180] [2023-12-20 14:23:26,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486614180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:26,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:26,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 14:23:26,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176647438] [2023-12-20 14:23:26,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:26,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:23:26,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:26,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:23:26,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:26,667 INFO L87 Difference]: Start difference. First operand 8113 states and 12049 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:29,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:29,440 INFO L93 Difference]: Finished difference Result 11119 states and 16976 transitions. [2023-12-20 14:23:29,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:23:29,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-20 14:23:29,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:29,455 INFO L225 Difference]: With dead ends: 11119 [2023-12-20 14:23:29,455 INFO L226 Difference]: Without dead ends: 9615 [2023-12-20 14:23:29,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:29,461 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 849 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:29,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 595 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 14:23:29,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9615 states. [2023-12-20 14:23:29,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9615 to 9615. [2023-12-20 14:23:29,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9615 states, 9613 states have (on average 1.4427337979818995) internal successors, (13869), 9614 states have internal predecessors, (13869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:29,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9615 states to 9615 states and 13869 transitions. [2023-12-20 14:23:29,636 INFO L78 Accepts]: Start accepts. Automaton has 9615 states and 13869 transitions. Word has length 77 [2023-12-20 14:23:29,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:29,636 INFO L495 AbstractCegarLoop]: Abstraction has 9615 states and 13869 transitions. [2023-12-20 14:23:29,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:29,637 INFO L276 IsEmpty]: Start isEmpty. Operand 9615 states and 13869 transitions. [2023-12-20 14:23:29,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 14:23:29,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:29,638 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 14:23:29,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:23:29,638 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:29,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:29,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1608677359, now seen corresponding path program 1 times [2023-12-20 14:23:29,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:29,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472859795] [2023-12-20 14:23:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:29,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:29,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:29,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:29,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472859795] [2023-12-20 14:23:29,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472859795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:29,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:29,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 14:23:29,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921148743] [2023-12-20 14:23:29,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:29,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:23:29,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:29,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:23:29,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:29,772 INFO L87 Difference]: Start difference. First operand 9615 states and 13869 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:32,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:32,380 INFO L93 Difference]: Finished difference Result 15627 states and 22437 transitions. [2023-12-20 14:23:32,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:23:32,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-12-20 14:23:32,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:32,403 INFO L225 Difference]: With dead ends: 15627 [2023-12-20 14:23:32,403 INFO L226 Difference]: Without dead ends: 12621 [2023-12-20 14:23:32,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:32,413 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 1039 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:32,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 703 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 14:23:32,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12621 states. [2023-12-20 14:23:32,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12621 to 12619. [2023-12-20 14:23:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12619 states, 12617 states have (on average 1.3925655861139732) internal successors, (17570), 12618 states have internal predecessors, (17570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:32,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12619 states to 12619 states and 17570 transitions. [2023-12-20 14:23:32,637 INFO L78 Accepts]: Start accepts. Automaton has 12619 states and 17570 transitions. Word has length 81 [2023-12-20 14:23:32,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:32,638 INFO L495 AbstractCegarLoop]: Abstraction has 12619 states and 17570 transitions. [2023-12-20 14:23:32,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:32,638 INFO L276 IsEmpty]: Start isEmpty. Operand 12619 states and 17570 transitions. [2023-12-20 14:23:32,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:23:32,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:32,640 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:32,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:23:32,641 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:32,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:32,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1535692104, now seen corresponding path program 1 times [2023-12-20 14:23:32,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:32,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768999828] [2023-12-20 14:23:32,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:32,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:32,793 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 14:23:32,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:32,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768999828] [2023-12-20 14:23:32,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768999828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:32,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:32,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:23:32,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636093103] [2023-12-20 14:23:32,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:32,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:23:32,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:32,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:23:32,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:23:32,796 INFO L87 Difference]: Start difference. First operand 12619 states and 17570 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:33,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:33,520 INFO L93 Difference]: Finished difference Result 53337 states and 76681 transitions. [2023-12-20 14:23:33,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:23:33,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 14:23:33,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:33,585 INFO L225 Difference]: With dead ends: 53337 [2023-12-20 14:23:33,585 INFO L226 Difference]: Without dead ends: 46775 [2023-12-20 14:23:33,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:23:33,609 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 8090 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8090 SdHoareTripleChecker+Valid, 3839 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:33,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8090 Valid, 3839 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:23:33,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46775 states. [2023-12-20 14:23:34,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46775 to 19179. [2023-12-20 14:23:34,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19179 states, 19177 states have (on average 1.408458048704177) internal successors, (27010), 19178 states have internal predecessors, (27010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:34,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19179 states to 19179 states and 27010 transitions. [2023-12-20 14:23:34,284 INFO L78 Accepts]: Start accepts. Automaton has 19179 states and 27010 transitions. Word has length 86 [2023-12-20 14:23:34,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:34,284 INFO L495 AbstractCegarLoop]: Abstraction has 19179 states and 27010 transitions. [2023-12-20 14:23:34,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:34,284 INFO L276 IsEmpty]: Start isEmpty. Operand 19179 states and 27010 transitions. [2023-12-20 14:23:34,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:23:34,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:34,287 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:34,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 14:23:34,287 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:34,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:34,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1575636040, now seen corresponding path program 1 times [2023-12-20 14:23:34,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:34,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670963648] [2023-12-20 14:23:34,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:34,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 14:23:34,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:34,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670963648] [2023-12-20 14:23:34,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670963648] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:34,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:34,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:23:34,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529702789] [2023-12-20 14:23:34,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:34,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:23:34,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:34,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:23:34,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:23:34,436 INFO L87 Difference]: Start difference. First operand 19179 states and 27010 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:35,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:35,318 INFO L93 Difference]: Finished difference Result 59897 states and 86121 transitions. [2023-12-20 14:23:35,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:23:35,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 14:23:35,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:35,378 INFO L225 Difference]: With dead ends: 59897 [2023-12-20 14:23:35,378 INFO L226 Difference]: Without dead ends: 53335 [2023-12-20 14:23:35,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:23:35,392 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 8138 mSDsluCounter, 2135 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8138 SdHoareTripleChecker+Valid, 3766 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:35,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8138 Valid, 3766 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:23:35,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53335 states. [2023-12-20 14:23:35,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53335 to 29035. [2023-12-20 14:23:36,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29035 states, 29033 states have (on average 1.4152860538008474) internal successors, (41090), 29034 states have internal predecessors, (41090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:36,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29035 states to 29035 states and 41090 transitions. [2023-12-20 14:23:36,044 INFO L78 Accepts]: Start accepts. Automaton has 29035 states and 41090 transitions. Word has length 86 [2023-12-20 14:23:36,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:36,044 INFO L495 AbstractCegarLoop]: Abstraction has 29035 states and 41090 transitions. [2023-12-20 14:23:36,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:36,045 INFO L276 IsEmpty]: Start isEmpty. Operand 29035 states and 41090 transitions. [2023-12-20 14:23:36,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:23:36,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:36,047 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:36,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:23:36,047 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:36,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:36,047 INFO L85 PathProgramCache]: Analyzing trace with hash 949979976, now seen corresponding path program 1 times [2023-12-20 14:23:36,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:36,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970969888] [2023-12-20 14:23:36,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:36,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:36,356 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 14:23:36,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:36,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970969888] [2023-12-20 14:23:36,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970969888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:36,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:36,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:23:36,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333438650] [2023-12-20 14:23:36,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:36,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:23:36,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:36,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:23:36,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:23:36,358 INFO L87 Difference]: Start difference. First operand 29035 states and 41090 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:37,491 INFO L93 Difference]: Finished difference Result 66457 states and 95561 transitions. [2023-12-20 14:23:37,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:23:37,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 14:23:37,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:37,560 INFO L225 Difference]: With dead ends: 66457 [2023-12-20 14:23:37,560 INFO L226 Difference]: Without dead ends: 59895 [2023-12-20 14:23:37,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:23:37,578 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 8183 mSDsluCounter, 2161 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8183 SdHoareTripleChecker+Valid, 3789 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:37,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8183 Valid, 3789 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:23:37,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59895 states. [2023-12-20 14:23:38,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59895 to 35595. [2023-12-20 14:23:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35595 states, 35593 states have (on average 1.4196611693310481) internal successors, (50530), 35594 states have internal predecessors, (50530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:38,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35595 states to 35595 states and 50530 transitions. [2023-12-20 14:23:38,526 INFO L78 Accepts]: Start accepts. Automaton has 35595 states and 50530 transitions. Word has length 86 [2023-12-20 14:23:38,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:38,526 INFO L495 AbstractCegarLoop]: Abstraction has 35595 states and 50530 transitions. [2023-12-20 14:23:38,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:38,526 INFO L276 IsEmpty]: Start isEmpty. Operand 35595 states and 50530 transitions. [2023-12-20 14:23:38,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:23:38,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:38,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:38,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:23:38,529 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:38,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:38,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1838713416, now seen corresponding path program 1 times [2023-12-20 14:23:38,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:38,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734956341] [2023-12-20 14:23:38,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:38,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 14:23:38,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:38,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734956341] [2023-12-20 14:23:38,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734956341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:38,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:38,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:23:38,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379634689] [2023-12-20 14:23:38,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:38,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:23:38,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:38,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:23:38,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:23:38,701 INFO L87 Difference]: Start difference. First operand 35595 states and 50530 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:39,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:39,791 INFO L93 Difference]: Finished difference Result 73017 states and 105001 transitions. [2023-12-20 14:23:39,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:23:39,792 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 14:23:39,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:39,868 INFO L225 Difference]: With dead ends: 73017 [2023-12-20 14:23:39,868 INFO L226 Difference]: Without dead ends: 66455 [2023-12-20 14:23:39,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:23:39,884 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 8090 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8090 SdHoareTripleChecker+Valid, 3876 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:39,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8090 Valid, 3876 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:23:39,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66455 states. [2023-12-20 14:23:40,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66455 to 42155. [2023-12-20 14:23:40,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42155 states, 42153 states have (on average 1.4226745427371716) internal successors, (59970), 42154 states have internal predecessors, (59970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42155 states to 42155 states and 59970 transitions. [2023-12-20 14:23:40,984 INFO L78 Accepts]: Start accepts. Automaton has 42155 states and 59970 transitions. Word has length 86 [2023-12-20 14:23:40,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:40,984 INFO L495 AbstractCegarLoop]: Abstraction has 42155 states and 59970 transitions. [2023-12-20 14:23:40,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:40,984 INFO L276 IsEmpty]: Start isEmpty. Operand 42155 states and 59970 transitions. [2023-12-20 14:23:40,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:23:40,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:40,989 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:40,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:23:40,990 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:40,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:40,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1804275272, now seen corresponding path program 1 times [2023-12-20 14:23:40,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:40,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627731515] [2023-12-20 14:23:40,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:40,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:23:41,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:41,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627731515] [2023-12-20 14:23:41,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627731515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:41,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:41,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:23:41,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422887916] [2023-12-20 14:23:41,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:41,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:23:41,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:41,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:23:41,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:23:41,097 INFO L87 Difference]: Start difference. First operand 42155 states and 59970 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:42,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:42,612 INFO L93 Difference]: Finished difference Result 79577 states and 114441 transitions. [2023-12-20 14:23:42,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:23:42,612 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 14:23:42,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:42,689 INFO L225 Difference]: With dead ends: 79577 [2023-12-20 14:23:42,690 INFO L226 Difference]: Without dead ends: 73015 [2023-12-20 14:23:42,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:23:42,709 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 8030 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8030 SdHoareTripleChecker+Valid, 4006 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:42,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8030 Valid, 4006 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:23:42,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73015 states. [2023-12-20 14:23:44,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73015 to 48715. [2023-12-20 14:23:44,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48715 states, 48713 states have (on average 1.4248763163837168) internal successors, (69410), 48714 states have internal predecessors, (69410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:44,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48715 states to 48715 states and 69410 transitions. [2023-12-20 14:23:44,116 INFO L78 Accepts]: Start accepts. Automaton has 48715 states and 69410 transitions. Word has length 86 [2023-12-20 14:23:44,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:44,117 INFO L495 AbstractCegarLoop]: Abstraction has 48715 states and 69410 transitions. [2023-12-20 14:23:44,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:44,117 INFO L276 IsEmpty]: Start isEmpty. Operand 48715 states and 69410 transitions. [2023-12-20 14:23:44,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-20 14:23:44,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:44,121 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:44,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:23:44,121 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:44,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:44,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1799324112, now seen corresponding path program 1 times [2023-12-20 14:23:44,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:44,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109123697] [2023-12-20 14:23:44,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:44,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:44,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:44,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109123697] [2023-12-20 14:23:44,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109123697] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:44,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:44,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:23:44,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167815878] [2023-12-20 14:23:44,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:44,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:23:44,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:44,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:23:44,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:44,194 INFO L87 Difference]: Start difference. First operand 48715 states and 69410 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:44,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:44,973 INFO L93 Difference]: Finished difference Result 78692 states and 113114 transitions. [2023-12-20 14:23:44,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:23:44,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-20 14:23:44,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:45,021 INFO L225 Difference]: With dead ends: 78692 [2023-12-20 14:23:45,022 INFO L226 Difference]: Without dead ends: 36034 [2023-12-20 14:23:45,143 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 [2023-12-20 14:23:45,145 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 58 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:45,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3152 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:23:45,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36034 states. [2023-12-20 14:23:45,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36034 to 36032. [2023-12-20 14:23:45,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36032 states, 36030 states have (on average 1.4243408270885374) internal successors, (51319), 36031 states have internal predecessors, (51319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:45,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36032 states to 36032 states and 51319 transitions. [2023-12-20 14:23:45,848 INFO L78 Accepts]: Start accepts. Automaton has 36032 states and 51319 transitions. Word has length 88 [2023-12-20 14:23:45,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:45,848 INFO L495 AbstractCegarLoop]: Abstraction has 36032 states and 51319 transitions. [2023-12-20 14:23:45,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:45,848 INFO L276 IsEmpty]: Start isEmpty. Operand 36032 states and 51319 transitions. [2023-12-20 14:23:45,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-20 14:23:45,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:45,850 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:45,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:23:45,851 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:45,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:45,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1059885715, now seen corresponding path program 1 times [2023-12-20 14:23:45,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:45,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556589303] [2023-12-20 14:23:45,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:45,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:46,104 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:23:46,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:46,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556589303] [2023-12-20 14:23:46,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556589303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:46,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:46,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:23:46,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388306038] [2023-12-20 14:23:46,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:46,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:23:46,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:46,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:23:46,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:23:46,106 INFO L87 Difference]: Start difference. First operand 36032 states and 51319 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:47,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:47,355 INFO L93 Difference]: Finished difference Result 63694 states and 91646 transitions. [2023-12-20 14:23:47,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:23:47,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-20 14:23:47,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:47,422 INFO L225 Difference]: With dead ends: 63694 [2023-12-20 14:23:47,423 INFO L226 Difference]: Without dead ends: 59084 [2023-12-20 14:23:47,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:23:47,440 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 8038 mSDsluCounter, 2341 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8038 SdHoareTripleChecker+Valid, 3966 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:47,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8038 Valid, 3966 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:23:47,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59084 states. [2023-12-20 14:23:48,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59084 to 40640. [2023-12-20 14:23:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40640 states, 40638 states have (on average 1.426620404547468) internal successors, (57975), 40639 states have internal predecessors, (57975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:48,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40640 states to 40640 states and 57975 transitions. [2023-12-20 14:23:48,608 INFO L78 Accepts]: Start accepts. Automaton has 40640 states and 57975 transitions. Word has length 88 [2023-12-20 14:23:48,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:48,608 INFO L495 AbstractCegarLoop]: Abstraction has 40640 states and 57975 transitions. [2023-12-20 14:23:48,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:48,608 INFO L276 IsEmpty]: Start isEmpty. Operand 40640 states and 57975 transitions. [2023-12-20 14:23:48,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-20 14:23:48,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:48,616 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:48,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:23:48,617 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:48,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:48,617 INFO L85 PathProgramCache]: Analyzing trace with hash -192668114, now seen corresponding path program 1 times [2023-12-20 14:23:48,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:48,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338886270] [2023-12-20 14:23:48,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:48,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:48,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:48,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338886270] [2023-12-20 14:23:48,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338886270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:48,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:48,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:23:48,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163478815] [2023-12-20 14:23:48,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:48,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:23:48,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:48,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:23:48,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:48,676 INFO L87 Difference]: Start difference. First operand 40640 states and 57975 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:49,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:49,266 INFO L93 Difference]: Finished difference Result 57924 states and 82937 transitions. [2023-12-20 14:23:49,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:23:49,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-20 14:23:49,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:49,292 INFO L225 Difference]: With dead ends: 57924 [2023-12-20 14:23:49,292 INFO L226 Difference]: Without dead ends: 23362 [2023-12-20 14:23:49,309 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 [2023-12-20 14:23:49,310 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 53 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:49,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3137 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:23:49,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23362 states. [2023-12-20 14:23:49,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23362 to 23360. [2023-12-20 14:23:49,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23360 states, 23358 states have (on average 1.403159517081942) internal successors, (32775), 23359 states have internal predecessors, (32775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:49,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23360 states to 23360 states and 32775 transitions. [2023-12-20 14:23:49,770 INFO L78 Accepts]: Start accepts. Automaton has 23360 states and 32775 transitions. Word has length 89 [2023-12-20 14:23:49,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:49,771 INFO L495 AbstractCegarLoop]: Abstraction has 23360 states and 32775 transitions. [2023-12-20 14:23:49,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:49,771 INFO L276 IsEmpty]: Start isEmpty. Operand 23360 states and 32775 transitions. [2023-12-20 14:23:49,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 14:23:49,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:49,773 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:49,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 14:23:49,773 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:49,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:49,773 INFO L85 PathProgramCache]: Analyzing trace with hash -251569188, now seen corresponding path program 1 times [2023-12-20 14:23:49,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:49,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396823429] [2023-12-20 14:23:49,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:49,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:49,829 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:49,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:49,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396823429] [2023-12-20 14:23:49,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396823429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:49,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:49,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:23:49,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108061375] [2023-12-20 14:23:49,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:49,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:23:49,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:49,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:23:49,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:49,831 INFO L87 Difference]: Start difference. First operand 23360 states and 32775 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:50,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:50,180 INFO L93 Difference]: Finished difference Result 32004 states and 45137 transitions. [2023-12-20 14:23:50,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:23:50,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-20 14:23:50,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:50,194 INFO L225 Difference]: With dead ends: 32004 [2023-12-20 14:23:50,194 INFO L226 Difference]: Without dead ends: 14722 [2023-12-20 14:23:50,205 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 [2023-12-20 14:23:50,205 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 50 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:50,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3122 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:23:50,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14722 states. [2023-12-20 14:23:50,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14722 to 14720. [2023-12-20 14:23:50,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14720 states, 14718 states have (on average 1.3789237668161436) internal successors, (20295), 14719 states have internal predecessors, (20295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:50,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14720 states to 14720 states and 20295 transitions. [2023-12-20 14:23:50,458 INFO L78 Accepts]: Start accepts. Automaton has 14720 states and 20295 transitions. Word has length 91 [2023-12-20 14:23:50,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:50,458 INFO L495 AbstractCegarLoop]: Abstraction has 14720 states and 20295 transitions. [2023-12-20 14:23:50,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:50,459 INFO L276 IsEmpty]: Start isEmpty. Operand 14720 states and 20295 transitions. [2023-12-20 14:23:50,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 14:23:50,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:50,460 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:50,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:23:50,462 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:50,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:50,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1008841974, now seen corresponding path program 1 times [2023-12-20 14:23:50,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:50,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591126186] [2023-12-20 14:23:50,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:50,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:50,522 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:50,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:50,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591126186] [2023-12-20 14:23:50,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591126186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:50,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:50,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:23:50,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892790204] [2023-12-20 14:23:50,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:50,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:23:50,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:50,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:23:50,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:50,523 INFO L87 Difference]: Start difference. First operand 14720 states and 20295 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:50,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:50,639 INFO L93 Difference]: Finished difference Result 19044 states and 26417 transitions. [2023-12-20 14:23:50,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:23:50,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-20 14:23:50,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:50,649 INFO L225 Difference]: With dead ends: 19044 [2023-12-20 14:23:50,649 INFO L226 Difference]: Without dead ends: 10402 [2023-12-20 14:23:50,654 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 [2023-12-20 14:23:50,655 INFO L413 NwaCegarLoop]: 1586 mSDtfsCounter, 47 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:50,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3107 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:23:50,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10402 states. [2023-12-20 14:23:50,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10402 to 10400. [2023-12-20 14:23:50,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10400 states, 10398 states have (on average 1.357472590882862) internal successors, (14115), 10399 states have internal predecessors, (14115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:50,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10400 states to 10400 states and 14115 transitions. [2023-12-20 14:23:50,883 INFO L78 Accepts]: Start accepts. Automaton has 10400 states and 14115 transitions. Word has length 93 [2023-12-20 14:23:50,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:50,883 INFO L495 AbstractCegarLoop]: Abstraction has 10400 states and 14115 transitions. [2023-12-20 14:23:50,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:50,883 INFO L276 IsEmpty]: Start isEmpty. Operand 10400 states and 14115 transitions. [2023-12-20 14:23:50,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 14:23:50,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:50,885 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:50,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 14:23:50,885 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:50,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:50,886 INFO L85 PathProgramCache]: Analyzing trace with hash -2134258760, now seen corresponding path program 1 times [2023-12-20 14:23:50,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:50,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002015491] [2023-12-20 14:23:50,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:50,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:50,953 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:50,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:50,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002015491] [2023-12-20 14:23:50,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002015491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:50,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:50,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:23:50,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476917579] [2023-12-20 14:23:50,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:50,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:23:50,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:50,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:23:50,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:50,954 INFO L87 Difference]: Start difference. First operand 10400 states and 14115 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:51,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:51,042 INFO L93 Difference]: Finished difference Result 12564 states and 17147 transitions. [2023-12-20 14:23:51,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:23:51,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 14:23:51,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:51,049 INFO L225 Difference]: With dead ends: 12564 [2023-12-20 14:23:51,049 INFO L226 Difference]: Without dead ends: 8242 [2023-12-20 14:23:51,052 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 [2023-12-20 14:23:51,053 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 44 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3092 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:51,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3092 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:23:51,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8242 states. [2023-12-20 14:23:51,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8242 to 8240. [2023-12-20 14:23:51,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8240 states, 8238 states have (on average 1.3419519300801166) internal successors, (11055), 8239 states have internal predecessors, (11055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:51,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8240 states to 8240 states and 11055 transitions. [2023-12-20 14:23:51,177 INFO L78 Accepts]: Start accepts. Automaton has 8240 states and 11055 transitions. Word has length 95 [2023-12-20 14:23:51,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:51,177 INFO L495 AbstractCegarLoop]: Abstraction has 8240 states and 11055 transitions. [2023-12-20 14:23:51,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:51,178 INFO L276 IsEmpty]: Start isEmpty. Operand 8240 states and 11055 transitions. [2023-12-20 14:23:51,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 14:23:51,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:51,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:51,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 14:23:51,179 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:51,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:51,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1081426458, now seen corresponding path program 1 times [2023-12-20 14:23:51,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:51,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169051700] [2023-12-20 14:23:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:51,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:51,241 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:51,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:51,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169051700] [2023-12-20 14:23:51,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169051700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:23:51,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:23:51,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:23:51,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559019951] [2023-12-20 14:23:51,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:23:51,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:23:51,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:51,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:23:51,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:23:51,243 INFO L87 Difference]: Start difference. First operand 8240 states and 11055 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:51,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:51,305 INFO L93 Difference]: Finished difference Result 9324 states and 12557 transitions. [2023-12-20 14:23:51,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:23:51,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-20 14:23:51,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:51,311 INFO L225 Difference]: With dead ends: 9324 [2023-12-20 14:23:51,311 INFO L226 Difference]: Without dead ends: 7162 [2023-12-20 14:23:51,313 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 [2023-12-20 14:23:51,314 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 41 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:51,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3077 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:23:51,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7162 states. [2023-12-20 14:23:51,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7162 to 7160. [2023-12-20 14:23:51,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7160 states, 7158 states have (on average 1.3327745180217938) internal successors, (9540), 7159 states have internal predecessors, (9540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:51,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7160 states to 7160 states and 9540 transitions. [2023-12-20 14:23:51,410 INFO L78 Accepts]: Start accepts. Automaton has 7160 states and 9540 transitions. Word has length 97 [2023-12-20 14:23:51,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:51,410 INFO L495 AbstractCegarLoop]: Abstraction has 7160 states and 9540 transitions. [2023-12-20 14:23:51,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:51,410 INFO L276 IsEmpty]: Start isEmpty. Operand 7160 states and 9540 transitions. [2023-12-20 14:23:51,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 14:23:51,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:51,411 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:51,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 14:23:51,411 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:51,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:51,412 INFO L85 PathProgramCache]: Analyzing trace with hash -905969260, now seen corresponding path program 1 times [2023-12-20 14:23:51,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:51,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348444129] [2023-12-20 14:23:51,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:51,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:52,192 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:52,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:52,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348444129] [2023-12-20 14:23:52,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348444129] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:23:52,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991887569] [2023-12-20 14:23:52,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:52,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:23:52,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:23:52,236 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:23:52,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 14:23:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:52,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 14:23:52,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:23:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:23:52,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:23:52,642 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:23:52,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991887569] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:23:52,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:23:52,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-12-20 14:23:52,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700197961] [2023-12-20 14:23:52,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:23:52,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-20 14:23:52,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:52,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-20 14:23:52,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:23:52,644 INFO L87 Difference]: Start difference. First operand 7160 states and 9540 transitions. Second operand has 17 states, 17 states have (on average 16.647058823529413) internal successors, (283), 17 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:55,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:55,032 INFO L93 Difference]: Finished difference Result 15991 states and 21482 transitions. [2023-12-20 14:23:55,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-20 14:23:55,032 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 16.647058823529413) internal successors, (283), 17 states have internal predecessors, (283), 0 states have call successors, (0), 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 99 [2023-12-20 14:23:55,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:55,046 INFO L225 Difference]: With dead ends: 15991 [2023-12-20 14:23:55,047 INFO L226 Difference]: Without dead ends: 14909 [2023-12-20 14:23:55,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=720, Invalid=3062, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 14:23:55,052 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 14025 mSDsluCounter, 4949 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14025 SdHoareTripleChecker+Valid, 6476 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:55,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14025 Valid, 6476 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:23:55,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14909 states. [2023-12-20 14:23:55,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14909 to 14565. [2023-12-20 14:23:55,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14565 states, 14563 states have (on average 1.3195770102314084) internal successors, (19217), 14564 states have internal predecessors, (19217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:55,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14565 states to 14565 states and 19217 transitions. [2023-12-20 14:23:55,327 INFO L78 Accepts]: Start accepts. Automaton has 14565 states and 19217 transitions. Word has length 99 [2023-12-20 14:23:55,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:55,328 INFO L495 AbstractCegarLoop]: Abstraction has 14565 states and 19217 transitions. [2023-12-20 14:23:55,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 16.647058823529413) internal successors, (283), 17 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:55,328 INFO L276 IsEmpty]: Start isEmpty. Operand 14565 states and 19217 transitions. [2023-12-20 14:23:55,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:23:55,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:55,329 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:55,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 14:23:55,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 14:23:55,535 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:55,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:55,536 INFO L85 PathProgramCache]: Analyzing trace with hash -866777489, now seen corresponding path program 1 times [2023-12-20 14:23:55,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:55,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405918874] [2023-12-20 14:23:55,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:55,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:55,822 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:55,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:55,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405918874] [2023-12-20 14:23:55,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405918874] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:23:55,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333903425] [2023-12-20 14:23:55,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:55,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:23:55,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:23:55,823 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:23:55,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 14:23:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:55,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:23:55,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:23:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:56,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:23:57,429 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:57,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333903425] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:23:57,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:23:57,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-12-20 14:23:57,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578826361] [2023-12-20 14:23:57,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:23:57,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 14:23:57,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:23:57,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 14:23:57,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-12-20 14:23:57,431 INFO L87 Difference]: Start difference. First operand 14565 states and 19217 transitions. Second operand has 27 states, 27 states have (on average 9.666666666666666) internal successors, (261), 27 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:58,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:23:58,371 INFO L93 Difference]: Finished difference Result 29563 states and 38653 transitions. [2023-12-20 14:23:58,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 14:23:58,371 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.666666666666666) internal successors, (261), 27 states have internal predecessors, (261), 0 states have call successors, (0), 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 100 [2023-12-20 14:23:58,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:23:58,391 INFO L225 Difference]: With dead ends: 29563 [2023-12-20 14:23:58,391 INFO L226 Difference]: Without dead ends: 21396 [2023-12-20 14:23:58,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=329, Invalid=1231, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 14:23:58,400 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 12246 mSDsluCounter, 7910 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12246 SdHoareTripleChecker+Valid, 9435 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:23:58,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12246 Valid, 9435 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:23:58,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21396 states. [2023-12-20 14:23:58,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21396 to 20880. [2023-12-20 14:23:58,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20880 states, 20878 states have (on average 1.3081233834658492) internal successors, (27311), 20879 states have internal predecessors, (27311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:58,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20880 states to 20880 states and 27311 transitions. [2023-12-20 14:23:58,904 INFO L78 Accepts]: Start accepts. Automaton has 20880 states and 27311 transitions. Word has length 100 [2023-12-20 14:23:58,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:23:58,904 INFO L495 AbstractCegarLoop]: Abstraction has 20880 states and 27311 transitions. [2023-12-20 14:23:58,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.666666666666666) internal successors, (261), 27 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:23:58,905 INFO L276 IsEmpty]: Start isEmpty. Operand 20880 states and 27311 transitions. [2023-12-20 14:23:58,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:23:58,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:23:58,905 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:23:58,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 14:23:59,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 14:23:59,113 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:23:59,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:23:59,113 INFO L85 PathProgramCache]: Analyzing trace with hash -233798289, now seen corresponding path program 1 times [2023-12-20 14:23:59,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:23:59,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039637191] [2023-12-20 14:23:59,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:59,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:23:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:23:59,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:23:59,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039637191] [2023-12-20 14:23:59,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039637191] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:23:59,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649748352] [2023-12-20 14:23:59,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:23:59,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:23:59,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:23:59,708 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:23:59,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 14:23:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:23:59,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 14:23:59,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:24:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:24:00,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:24:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:24:00,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649748352] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:24:00,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:24:00,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2023-12-20 14:24:00,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200933918] [2023-12-20 14:24:00,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:24:00,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-20 14:24:00,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:24:00,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-20 14:24:00,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2023-12-20 14:24:00,914 INFO L87 Difference]: Start difference. First operand 20880 states and 27311 transitions. Second operand has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:24:01,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:24:01,861 INFO L93 Difference]: Finished difference Result 34025 states and 44253 transitions. [2023-12-20 14:24:01,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:24:01,862 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 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 100 [2023-12-20 14:24:01,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:24:01,882 INFO L225 Difference]: With dead ends: 34025 [2023-12-20 14:24:01,882 INFO L226 Difference]: Without dead ends: 21916 [2023-12-20 14:24:01,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=1042, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 14:24:01,893 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 15705 mSDsluCounter, 6481 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15705 SdHoareTripleChecker+Valid, 8006 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:24:01,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15705 Valid, 8006 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:24:01,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21916 states. [2023-12-20 14:24:02,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21916 to 19848. [2023-12-20 14:24:02,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19848 states, 19846 states have (on average 1.2929557593469716) internal successors, (25660), 19847 states have internal predecessors, (25660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:24:02,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19848 states to 19848 states and 25660 transitions. [2023-12-20 14:24:02,461 INFO L78 Accepts]: Start accepts. Automaton has 19848 states and 25660 transitions. Word has length 100 [2023-12-20 14:24:02,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:24:02,462 INFO L495 AbstractCegarLoop]: Abstraction has 19848 states and 25660 transitions. [2023-12-20 14:24:02,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:24:02,462 INFO L276 IsEmpty]: Start isEmpty. Operand 19848 states and 25660 transitions. [2023-12-20 14:24:02,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:24:02,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:24:02,463 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:24:02,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 14:24:02,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 14:24:02,668 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:24:02,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:24:02,668 INFO L85 PathProgramCache]: Analyzing trace with hash -756402499, now seen corresponding path program 1 times [2023-12-20 14:24:02,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:24:02,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789891827] [2023-12-20 14:24:02,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:24:02,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:24:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:24:02,950 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:24:02,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:24:02,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789891827] [2023-12-20 14:24:02,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789891827] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:24:02,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064501593] [2023-12-20 14:24:02,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:24:02,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:24:02,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:24:02,952 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:24:03,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 14:24:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:24:03,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:24:03,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:24:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:24:03,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:24:04,333 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:24:04,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064501593] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:24:04,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:24:04,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 14:24:04,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35454100] [2023-12-20 14:24:04,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:24:04,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 14:24:04,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:24:04,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 14:24:04,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2023-12-20 14:24:04,337 INFO L87 Difference]: Start difference. First operand 19848 states and 25660 transitions. Second operand has 28 states, 28 states have (on average 8.821428571428571) internal successors, (247), 28 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:24:05,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:24:05,715 INFO L93 Difference]: Finished difference Result 48772 states and 62618 transitions. [2023-12-20 14:24:05,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 14:24:05,715 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.821428571428571) internal successors, (247), 28 states have internal predecessors, (247), 0 states have call successors, (0), 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 100 [2023-12-20 14:24:05,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:24:05,748 INFO L225 Difference]: With dead ends: 48772 [2023-12-20 14:24:05,748 INFO L226 Difference]: Without dead ends: 35362 [2023-12-20 14:24:05,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=428, Invalid=1378, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 14:24:05,758 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 11138 mSDsluCounter, 5087 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11138 SdHoareTripleChecker+Valid, 6638 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:24:05,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11138 Valid, 6638 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:24:05,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35362 states. [2023-12-20 14:24:06,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35362 to 33982. [2023-12-20 14:24:06,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33982 states, 33980 states have (on average 1.2770747498528545) internal successors, (43395), 33981 states have internal predecessors, (43395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:24:06,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33982 states to 33982 states and 43395 transitions. [2023-12-20 14:24:06,689 INFO L78 Accepts]: Start accepts. Automaton has 33982 states and 43395 transitions. Word has length 100 [2023-12-20 14:24:06,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:24:06,690 INFO L495 AbstractCegarLoop]: Abstraction has 33982 states and 43395 transitions. [2023-12-20 14:24:06,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.821428571428571) internal successors, (247), 28 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:24:06,690 INFO L276 IsEmpty]: Start isEmpty. Operand 33982 states and 43395 transitions. [2023-12-20 14:24:06,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 14:24:06,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:24:06,691 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:24:06,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 14:24:06,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:24:06,896 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:24:06,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:24:06,897 INFO L85 PathProgramCache]: Analyzing trace with hash 231686466, now seen corresponding path program 1 times [2023-12-20 14:24:06,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:24:06,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570488072] [2023-12-20 14:24:06,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:24:06,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:24:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:24:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:24:07,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:24:07,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570488072] [2023-12-20 14:24:07,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570488072] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:24:07,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586239547] [2023-12-20 14:24:07,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:24:07,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:24:07,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:24:07,148 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:24:07,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 14:24:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:24:07,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:24:07,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:24:07,918 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:24:07,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:24:08,575 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:24:08,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586239547] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:24:08,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:24:08,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 14:24:08,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881163186] [2023-12-20 14:24:08,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:24:08,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 14:24:08,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:24:08,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 14:24:08,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2023-12-20 14:24:08,577 INFO L87 Difference]: Start difference. First operand 33982 states and 43395 transitions. Second operand has 28 states, 28 states have (on average 9.214285714285714) internal successors, (258), 28 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:24:10,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:24:10,786 INFO L93 Difference]: Finished difference Result 92250 states and 117183 transitions. [2023-12-20 14:24:10,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 14:24:10,787 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.214285714285714) internal successors, (258), 28 states have internal predecessors, (258), 0 states have call successors, (0), 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 101 [2023-12-20 14:24:10,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:24:10,850 INFO L225 Difference]: With dead ends: 92250 [2023-12-20 14:24:10,850 INFO L226 Difference]: Without dead ends: 65202 [2023-12-20 14:24:10,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=411, Invalid=1395, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 14:24:10,866 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 18253 mSDsluCounter, 6478 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18253 SdHoareTripleChecker+Valid, 8024 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:24:10,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18253 Valid, 8024 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:24:10,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65202 states. [2023-12-20 14:24:12,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65202 to 62486. [2023-12-20 14:24:12,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62486 states, 62484 states have (on average 1.2615069457781192) internal successors, (78824), 62485 states have internal predecessors, (78824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:24:12,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62486 states to 62486 states and 78824 transitions. [2023-12-20 14:24:12,906 INFO L78 Accepts]: Start accepts. Automaton has 62486 states and 78824 transitions. Word has length 101 [2023-12-20 14:24:12,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:24:12,907 INFO L495 AbstractCegarLoop]: Abstraction has 62486 states and 78824 transitions. [2023-12-20 14:24:12,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.214285714285714) internal successors, (258), 28 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:24:12,908 INFO L276 IsEmpty]: Start isEmpty. Operand 62486 states and 78824 transitions. [2023-12-20 14:24:12,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 14:24:12,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:24:12,916 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:24:12,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 14:24:13,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:24:13,121 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:24:13,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:24:13,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1970477293, now seen corresponding path program 1 times [2023-12-20 14:24:13,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:24:13,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565102970] [2023-12-20 14:24:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:24:13,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:24:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:24:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:24:13,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:24:13,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565102970] [2023-12-20 14:24:13,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565102970] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:24:13,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442691534] [2023-12-20 14:24:13,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:24:13,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:24:13,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:24:13,615 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:24:13,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 14:24:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:24:13,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 14:24:13,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:24:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:24:14,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:24:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:24:15,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442691534] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:24:15,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:24:15,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2023-12-20 14:24:15,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635479834] [2023-12-20 14:24:15,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:24:15,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 14:24:15,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:24:15,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 14:24:15,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2023-12-20 14:24:15,299 INFO L87 Difference]: Start difference. First operand 62486 states and 78824 transitions. Second operand has 30 states, 30 states have (on average 9.766666666666667) internal successors, (293), 30 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:24:22,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:24:22,165 INFO L93 Difference]: Finished difference Result 179694 states and 223426 transitions. [2023-12-20 14:24:22,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-20 14:24:22,168 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.766666666666667) internal successors, (293), 30 states have internal predecessors, (293), 0 states have call successors, (0), 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 102 [2023-12-20 14:24:22,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:24:22,306 INFO L225 Difference]: With dead ends: 179694 [2023-12-20 14:24:22,306 INFO L226 Difference]: Without dead ends: 130072 [2023-12-20 14:24:22,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1421 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1143, Invalid=4709, Unknown=0, NotChecked=0, Total=5852 [2023-12-20 14:24:22,327 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 12632 mSDsluCounter, 17337 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12632 SdHoareTripleChecker+Valid, 18873 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:24:22,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12632 Valid, 18873 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:24:22,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130072 states. [2023-12-20 14:24:26,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130072 to 112376. [2023-12-20 14:24:26,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112376 states, 112374 states have (on average 1.2441579012938937) internal successors, (139811), 112375 states have internal predecessors, (139811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:24:26,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112376 states to 112376 states and 139811 transitions. [2023-12-20 14:24:26,844 INFO L78 Accepts]: Start accepts. Automaton has 112376 states and 139811 transitions. Word has length 102 [2023-12-20 14:24:26,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:24:26,844 INFO L495 AbstractCegarLoop]: Abstraction has 112376 states and 139811 transitions. [2023-12-20 14:24:26,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.766666666666667) internal successors, (293), 30 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:24:26,844 INFO L276 IsEmpty]: Start isEmpty. Operand 112376 states and 139811 transitions. [2023-12-20 14:24:26,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 14:24:26,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:24:26,847 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:24:26,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 14:24:27,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:24:27,052 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:24:27,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:24:27,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1165092874, now seen corresponding path program 1 times [2023-12-20 14:24:27,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:24:27,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103554738] [2023-12-20 14:24:27,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:24:27,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:24:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:24:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:24:27,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:24:27,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103554738] [2023-12-20 14:24:27,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103554738] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:24:27,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653426980] [2023-12-20 14:24:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:24:27,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:24:27,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:24:27,343 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:24:27,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 14:24:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:24:27,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:24:27,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:24:28,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:24:28,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:24:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:24:28,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653426980] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:24:28,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:24:28,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-20 14:24:28,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247326694] [2023-12-20 14:24:28,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:24:28,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 14:24:28,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:24:28,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 14:24:28,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2023-12-20 14:24:28,898 INFO L87 Difference]: Start difference. First operand 112376 states and 139811 transitions. Second operand has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 29 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:24:36,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:24:36,535 INFO L93 Difference]: Finished difference Result 324870 states and 403145 transitions. [2023-12-20 14:24:36,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 14:24:36,536 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 29 states have internal predecessors, (271), 0 states have call successors, (0), 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 103 [2023-12-20 14:24:36,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:24:36,994 INFO L225 Difference]: With dead ends: 324870 [2023-12-20 14:24:36,994 INFO L226 Difference]: Without dead ends: 230778 [2023-12-20 14:24:37,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=480, Invalid=1412, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 14:24:37,061 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 13807 mSDsluCounter, 6593 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13807 SdHoareTripleChecker+Valid, 8133 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:24:37,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13807 Valid, 8133 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:24:37,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230778 states. [2023-12-20 14:24:45,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230778 to 219518. [2023-12-20 14:24:45,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219518 states, 219516 states have (on average 1.2313407678711348) internal successors, (270299), 219517 states have internal predecessors, (270299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:24:45,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219518 states to 219518 states and 270299 transitions. [2023-12-20 14:24:45,856 INFO L78 Accepts]: Start accepts. Automaton has 219518 states and 270299 transitions. Word has length 103 [2023-12-20 14:24:45,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:24:45,856 INFO L495 AbstractCegarLoop]: Abstraction has 219518 states and 270299 transitions. [2023-12-20 14:24:45,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 29 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:24:45,857 INFO L276 IsEmpty]: Start isEmpty. Operand 219518 states and 270299 transitions. [2023-12-20 14:24:45,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 14:24:45,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:24:45,860 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:24:45,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-20 14:24:46,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:24:46,065 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:24:46,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:24:46,066 INFO L85 PathProgramCache]: Analyzing trace with hash 843766117, now seen corresponding path program 1 times [2023-12-20 14:24:46,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:24:46,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93606984] [2023-12-20 14:24:46,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:24:46,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:24:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:24:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:24:46,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:24:46,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93606984] [2023-12-20 14:24:46,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93606984] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:24:46,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694085782] [2023-12-20 14:24:46,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:24:46,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:24:46,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:24:46,997 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:24:46,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 14:24:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:24:47,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:24:47,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:24:47,996 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:24:47,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:24:49,157 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:24:49,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694085782] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:24:49,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:24:49,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 15] total 38 [2023-12-20 14:24:49,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92304009] [2023-12-20 14:24:49,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:24:49,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-20 14:24:49,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:24:49,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-20 14:24:49,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2023-12-20 14:24:49,162 INFO L87 Difference]: Start difference. First operand 219518 states and 270299 transitions. Second operand has 38 states, 38 states have (on average 7.605263157894737) internal successors, (289), 38 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:25:02,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:25:02,263 INFO L93 Difference]: Finished difference Result 337888 states and 413956 transitions. [2023-12-20 14:25:02,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-20 14:25:02,263 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 7.605263157894737) internal successors, (289), 38 states have internal predecessors, (289), 0 states have call successors, (0), 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 104 [2023-12-20 14:25:02,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:25:02,652 INFO L225 Difference]: With dead ends: 337888 [2023-12-20 14:25:02,652 INFO L226 Difference]: Without dead ends: 247268 [2023-12-20 14:25:02,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2794 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1980, Invalid=8120, Unknown=0, NotChecked=0, Total=10100 [2023-12-20 14:25:02,748 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 15498 mSDsluCounter, 28217 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15498 SdHoareTripleChecker+Valid, 29780 SdHoareTripleChecker+Invalid, 2465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:25:02,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15498 Valid, 29780 Invalid, 2465 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 14:25:02,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247268 states. [2023-12-20 14:25:10,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247268 to 186556. [2023-12-20 14:25:10,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186556 states, 186554 states have (on average 1.2289685560213128) internal successors, (229269), 186555 states have internal predecessors, (229269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:25:10,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186556 states to 186556 states and 229269 transitions. [2023-12-20 14:25:10,803 INFO L78 Accepts]: Start accepts. Automaton has 186556 states and 229269 transitions. Word has length 104 [2023-12-20 14:25:10,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:25:10,803 INFO L495 AbstractCegarLoop]: Abstraction has 186556 states and 229269 transitions. [2023-12-20 14:25:10,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 7.605263157894737) internal successors, (289), 38 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:25:10,803 INFO L276 IsEmpty]: Start isEmpty. Operand 186556 states and 229269 transitions. [2023-12-20 14:25:10,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 14:25:10,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:25:10,806 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:25:10,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 14:25:11,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-20 14:25:11,010 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:25:11,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:25:11,011 INFO L85 PathProgramCache]: Analyzing trace with hash -3126171, now seen corresponding path program 1 times [2023-12-20 14:25:11,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:25:11,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658128480] [2023-12-20 14:25:11,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:25:11,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:25:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:25:11,791 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:25:11,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:25:11,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658128480] [2023-12-20 14:25:11,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658128480] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:25:11,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930622211] [2023-12-20 14:25:11,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:25:11,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:25:11,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:25:11,793 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:25:11,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 14:25:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:25:11,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-20 14:25:11,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:25:19,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:25:19,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:25:32,301 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:25:32,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930622211] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:25:32,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:25:32,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 32, 42] total 83 [2023-12-20 14:25:32,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372289344] [2023-12-20 14:25:32,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:25:32,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-12-20 14:25:32,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:25:32,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-12-20 14:25:32,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=5941, Unknown=0, NotChecked=0, Total=6806 [2023-12-20 14:25:32,304 INFO L87 Difference]: Start difference. First operand 186556 states and 229269 transitions. Second operand has 83 states, 83 states have (on average 3.4216867469879517) internal successors, (284), 83 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)